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Sunday, June 24, 2012

Medre.A - AutoCAD worm samples


         Medre.A  is a an AutoCAD worm, written in AutoLISP and is a very unusual piece of malware. It was
          ESET reported Peru and neighboring countries as the target but I noticed that one of the samples' (MD5 25c7e10bb537b4265f6144f2cd7f6d95) original name is 未命名1 ( Unnamed 1), so I wonder if some targets/sources were Chinese speaking.
P.S. The samples were donated by an anonymous but the original source is someone from Malwarebytes forum and  I want to thank him/her (sorry don't know the name) for sharing. I hope they do not mind me posting them here.

File information


File: 2dda8e76f8488e8cd44dd25167e91642a0b27e245848be96ef0bea2797feb40eMD5:  ea04c29bc814af6d96157c1113b3806dSize: 22105

File: 7c489147ce4238ba0f9f992a7dbe7afc9e1b2ef9afd4d25e3b182d69e90e18c9
MD5:  916744d1e7064a5522092f310a7c4ab0Size: 22052
File: 79baf616d2701cc26ef328cd9c13682db317932aa47efb8eb079d8af4a49e0a3
MD5:  7b563740f41e495a68b70cbb22980b20
Size: 12334
File: b886a58c6be03d75bf0a84ea3dc18c46aa98f6a9a5905f37661a23fd48d10232
MD5:  25c7e10bb537b4265f6144f2cd7f6d95Size: 22602
File: e8e1148f7497aa546e46a45f35704ed6d9f9cb8d83d04a825aaa5ae6335d979
MD5:  73dd85951ea154fbb40c26cd259ee0b7Size: 12334


Download





Automatic scans

SHA256: 7c489147ce4238ba0f9f992a7dbe7afc9e1b2ef9afd4d25e3b182d69e90e18c9
SHA1: 023e6c7730445db2b4c777b5d9b612e902dc7f72
MD5: 916744d1e7064a5522092f310a7c4ab0
File size: 21.5 KB ( 22052 bytes )
File name: 7c489147ce4238ba0f9f992a7dbe7afc9e1b2ef9afd4d25e3b182d69e90e18c9
File type: unknown
Detection ratio: 8 / 42
Analysis date: 2012-06-23 08:40:10 UTC ( 1 day, 17 hours ago ) 
Antivirus Result Update
Avast ALS:Merde-A [Wrm] 20120623
BitDefender Trojan.ACAD.H 20120623
Comodo UnclassifiedMalware 20120623
DrWeb - 20120623
Emsisoft - 20120623
F-Secure Trojan.ACAD.H 20120623
GData Trojan.ACAD.H 20120623
McAfee-GW-Edition Heuristic.LooksLike.Win32.Suspicious.H 20120623
NOD32 ACAD/Medre.A 20120622
Norman Bursted.F 20120622
nProtect - 20120623
SUPERAntiSpyware - 20120623
TrendMicro-HouseCall - 20120622

Additional information
ssdeep
384:HwvP/eyqn0QVgxccQ5YBvuOUIEERnVvdeQRv2J:6uOUgF4
TrID
Unknown!
First seen by VirusTotal
2012-06-21 19:08:34 UTC ( 3 days, 6 hours ago )
Last seen by VirusTotal
2012-06-23 08:40:10 UTC ( 1 day, 17 hours ago )
File names (max. 25)
1340366575.fc9e1b2ef9afd4d25e3b182d69e90e18c9
muestraACAD.txt
7c489147ce4238ba0f9f992a7dbe7afc9e1b2ef9afd4d25e3b182d69e90e18c9
file-4134327_


SHA256: 2dda8e76f8488e8cd44dd25167e91642a0b27e245848be96ef0bea2797feb40e
SHA1: ffadbc944a2976982e1daf0b715478e6062c9488
MD5: ea04c29bc814af6d96157c1113b3806d
File size: 21.6 KB ( 22105 bytes )
File name: account.exe
File type: unknown
Detection ratio: 10 / 42
Analysis date: 2012-06-23 20:28:06 UTC ( 1 day, 5 hours ago ) 
01
Avast ALS:Merde-A [Wrm] 20120623
BitDefender Trojan.ACAD.H 20120623
Comodo UnclassifiedMalware 20120623
Emsisoft Trojan.Acad!IK 20120623
F-Secure Trojan.ACAD.H 20120623
GData Trojan.ACAD.H 20120623
Ikarus Trojan.Acad 20120623
McAfee-GW-Edition Heuristic.LooksLike.Win32.Suspicious.H 20120623
Microsoft - 20120623
NOD32 ACAD/Medre.A 20120622
Norman Bursted.F 20120622
nProtect - 20120623
SUPERAntiSpyware - 20120623
TrendMicro-HouseCall - 20120623


384:HwvP/eyqn0QVgxccL5YBvuOIOFIIdZKyGNERnVvdeQ6v2J:buObFI6ZKRwY4
TrID
Unknown!
First seen by VirusTotal
2012-06-21 17:21:19 UTC ( 3 days, 8 hours ago )
Last seen by VirusTotal
2012-06-23 20:28:06 UTC ( 1 day, 5 hours ago )
File names (max. 25)
dsfg.txt
account.exe
2dda8e76f8488e8cd44dd25167e91642a0b27e245848be96ef0bea2797feb40e.exe
file-4134326_
2dda8e76f8488e8cd44dd25167e91642a0b27e245848be96ef0bea2797feb40e
1340366574.42a0b27e245848be96ef0bea2797feb40e


SHA256: 79baf616d2701cc26ef328cd9c13682db317932aa47efb8eb079d8af4a49e0a3
SHA1: 43ea33bedadc9bfc92c570b316b78b6fd9787f09
MD5: 7b563740f41e495a68b70cbb22980b20
File size: 12.0 KB ( 12334 bytes )
File name: acad.fas
File type: unknown
Detection ratio: 26 / 42
Analysis date: 2012-06-23 19:47:19 UTC ( 1 day, 5 hours ago ) 
AhnLab-V3 - 20120623
AntiVir ACAD/Bursted.A.3 20120623
Avast Other:Malware-gen [Trj] 20120623
AVG ACAD/Bursted.G 20120623
BitDefender Trojan.Acad.Bursted.W 20120623
ClamAV Worm.ACAD-1 20120623
Comodo UnclassifiedMalware 20120623
Emsisoft Email-Worm.Acad!IK 20120623
F-Secure Trojan.Acad.Bursted.W 20120623
Fortinet ACM/Medre.A@mm 20120623
GData Trojan.Acad.Bursted.W 20120623
Ikarus Email-Worm.Acad 20120623
Kaspersky Email-Worm.Acad.Medre.a 20120623
McAfee ALS/Bursted 20120623
McAfee-GW-Edition ALS/Bursted 20120623
Microsoft Worm:ALisp/Blemfox.A 20120623
NOD32 ACAD/Medre.A 20120622
Norman Bursted.E 20120622
nProtect Trojan.Acad.Bursted.W 20120623
Panda ACAD/Medre.A.worm 20120623
PCTools ALS.Bursted.B 20120623
Sophos AL/Bursted-AP 20120623
SUPERAntiSpyware - 20120623
Symantec ALS.Bursted.B 20120623
TrendMicro ACM_BURSTD.LEX 20120623
TrendMicro-HouseCall ACM_BURSTD.LEX 20120623
VBA32 - 20120622
VIPRE - 20120623
ViRobot I-Worm.Acad.A.Medre.12334 20120623
VirusBuster Worm.Acad.Medre.A 20120623

192:9FHRKCzYIvLCUglLBvFodl+gysUbfV01T5cjjhGkfHji:9/hdKJJFobyxAYjLji
TrID
AutoCAD Fast-load AutoLISP (FAS4) (100.0%)
First seen by VirusTotal
2011-10-24 21:23:59 UTC ( 8 months ago )
Last seen by VirusTotal
2012-06-23 19:47:19 UTC ( 1 day, 5 hours ago )
File names (max. 25)
79baf616d2701cc26ef328cd9c13682db317932aa47efb8eb079d8af4a49e0a3
acad.fas
file-3312805_fas
20120104203533acad.fas
acad-fas.txt
cad.fas

SHA256: b886a58c6be03d75bf0a84ea3dc18c46aa98f6a9a5905f37661a23fd48d10232
SHA1: f46c445f912c6d1224e22f9e6a76020d594888b9
MD5: 25c7e10bb537b4265f6144f2cd7f6d95
File size: 22.1 KB ( 22602 bytes )
File name: b886a58c6be03d75bf0a84ea3dc18c46aa98f6a9a5905f37661a23fd48d10232
File type: unknown
Detection ratio: 8 / 42
Analysis date: 2012-06-23 08:41:41 UTC ( 1 day, 17 hours ago ) 
Avast ALS:Merde-A [Wrm] 20120623
BitDefender Trojan.ACAD.H 20120623
Comodo UnclassifiedMalware 20120623
Emsisoft - 20120623
F-Secure Trojan.ACAD.H 20120623
GData Trojan.ACAD.H 20120623
McAfee - 20120623
McAfee-GW-Edition Heuristic.LooksLike.Win32.Suspicious.H 20120623
Microsoft - 20120623
NOD32 ACAD/Medre.A 20120622
Norman Bursted.F 20120622
nProtect - 20120623
SUPERAntiSpyware - 20120623
TrendMicro-HouseCall - 20120622


384:HwvP/eyqn0QVgxccE5YBvuOeIbERnVvdeQ5v2J:iuOeFd4
TrID
Unknown!
First seen by VirusTotal
2012-06-21 17:23:36 UTC ( 3 days, 8 hours ago )
Last seen by VirusTotal
2012-06-23 08:41:41 UTC ( 1 day, 17 hours ago )
File names (max. 25)
b886a58c6be03d75bf0a84ea3dc18c46aa98f6a9a5905f37661a23fd48d10232
file-4134329_
1340366577.46aa98f6a9a5905f37661a23fd48d10232
未命名1

SHA256: e8e1148f7497aa546e46a45f35704ed6d9f9cb8d83d04a825aaa5ae6335d979b
SHA1: 44561e474bda129379d87750f49fd57a5d378f91
MD5: 73dd85951ea154fbb40c26cd259ee0b7
File size: 12.0 KB ( 12334 bytes )
File name: e8e1148f7497aa546e46a45f35704ed6d9f9cb8d83d04a825aaa5ae6335d979b
File type: unknown
Detection ratio: 17 / 42
Analysis date: 2012-06-23 08:42:46 UTC ( 1 day, 17 hours ago ) 
01
Antiy-AVL Trojan/win32.agent 20120623
Avast Other:Malware-gen [Trj] 20120623
BitDefender Trojan.Acad.Bursted.W 20120623
Comodo UnclassifiedMalware 20120623
Emsisoft Worm.ALisp!IK 20120623
F-Secure Trojan.Acad.Bursted.W 20120623
Fortinet ACM/Medre.A@mm 20120623
GData Trojan.Acad.Bursted.W 20120623
Ikarus Worm.ALisp 20120623
Kaspersky Email-Worm.Acad.Medre.a 20120623
McAfee - 20120623
McAfee-GW-Edition - 20120623
Microsoft Worm:ALisp/Blemfox.gen!A 20120623
NOD32 ACAD/Medre.A 20120622
Norman Bursted.G 20120622
nProtect - 20120623
Panda ACAD/Medre.A.worm 20120622
PCTools ALS.Bursted.B 20120623
SUPERAntiSpyware - 20120623
Symantec ALS.Bursted.B 20120623
TrendMicro-HouseCall - 20120622
ViRobot I-Worm.Acad.A.Medre.12334.A 20120623

Additional information
ssdeep
192:9FHRKCzYIvLCUglLBvFodl+gysUbfV01T5cjjhGkcHji:9/hdKJJFobyxAYj4ji
TrID
AutoCAD Fast-load AutoLISP (FAS4) (100.0%)
First seen by VirusTotal
2012-06-12 04:10:49 UTC ( 1 week, 5 days ago )
Last seen by VirusTotal
2012-06-23 08:42:46 UTC ( 1 day, 17 hours ago )
File names (max. 25)
file-4134332_
pisurith
e8e1148f7497aa546e46a45f35704ed6d9f9cb8d83d04a825aaa5ae6335d979b
1340366586.d6d9f9cb8d83d04a825aaa5ae6335d979b

5 comments:

  1. As mentioned in ESET's whitepaper, the stealth drawing is sent to Chinese free email accounts (like @qq.com). So most likely the source is Chinese speaking, not the main target, I guess.

    ReplyDelete
  2. Replies
    1. Does somebody have a list of recipient email addresses?

      Delete
    2. Open the file with MD5 25c7e10bb537b4265f6144f2cd7f6d95 with Notepad, you will find the complete email address list in the source code.

      Delete