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Virlock

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Virlock

  • First seen: November 2014
  • Aliases: PolyRansom
  • Samples:
    • f0d7993a94ece82aee232b89ec736335bb9f49bc02081d2eaf8902106628b87c | windows | ransom | pe
    • a945691cd49771ef9a7e0fdeb5c1406a5e0bae6e62c556e5016d025b2d874fe5 | windows | ransom | pe

Virlock Windows Payload

Basic Properties

Property Value
Size 959488 bytes
CRC32 0xcccde1f5
MD5 0e9406eb85825b1810c8873da54a37a0
SHA1 84c681ca8334fff3f5759eeced9a2c4c03706284
SHA256 f0d7993a94ece82aee232b89ec736335bb9f49bc02081d2eaf8902106628b87c
SHA512 169b08e2489472e68543a0c2ac7eac5acba4bfb351e515c219a652c9f3b3b376a7e734dbf11a6161cab17e5abbdcb8b61f8c285a1e3035f50c20f43e6f4a39d6
Ssdeep 24576:MsHrXPmOF0b6tfGUshxtw1lIuHaROnakha5DJbmQwbdn66gsVynuq1:MsHrX+I0et9sBw1WOaROnakha5DJbNwQ
Magic PE32 executable (GUI) Intel 80386, for MS Windows
Packer PE: linker: Microsoft Linker(5.12*)[EXE32]
TrID 35.7% (.EXE) Win32 Executable (generic) (4505/5/1)
16.3% (.ICL) Windows Icons Library (generic) (2059/9)
16.1% (.EXE) OS/2 Executable (generic) (2029/13)
15.8% (.EXE) Generic Win/DOS Executable (2002/3)
15.8% (.EXE) DOS Executable Generic (2000/1)

Antivirus Scan

- Avast: Win32:VirLock [Inf]
- Avira: TR/Crypt.XPACK.Gen7
- Bitdefender: Win32.Virlock.Gen.4
+ Clamav: clean
- Comodo: Packed.Win32.Graybird.B
- Drweb: Win32.VirLock.3
- Eset: Win32/Virlock.D virus
- Fsecure: Trojan.TR/Crypt.XPACK.Gen7
+ Kaspersky: clean
- Mcafee: W32/VirRansom
- Sophos: W32/VirRnsm-A
- Symantec: W32.Virlock!inf
- Trendmicro: PE_VIRLOCK.J
- Windefender: Virus:Win32/Nabucur.A

PolyRansom Windows Payload (MSIL)

Basic Properties

Property Value
Size 38400 bytes
CRC32 0x3293568c
MD5 e3fe5ca8ab54cf593699926670550c1a
SHA1 f205ad3e3c6fc65b279eacc7f3d08982d32b14ea
SHA256 a945691cd49771ef9a7e0fdeb5c1406a5e0bae6e62c556e5016d025b2d874fe5
SHA512 fb26d6f19475b3acf452b1a0b5146a2566271e0eff8f55ec967e72ba1dc27af5890598a4ff85e3fe2954216482931efd608eb9a6bf65b20c18b4f0d2c13ca171
Ssdeep 768:Xz7TkX/gnY5Gwe0QaTsNzhRHZYMboGkct9hRZydalfuV3lVwGcL/bDc:XHTkv/SzhR51boBct9XOaFufVw9TbDc
Magic PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
Packer PE: library: .NET(v4.0.30319)[-]
PE: linker: Microsoft Linker(11.0)[EXE32,admin]
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)

Antivirus Scan

- Avast: Win32:MalwareX-gen [Trj]
+ Avira: clean
- Clamav: Win.Packed.Msilzilla-9953300-0
+ Comodo: clean
- Drweb: Trojan.PackedNET.1575
- Eset: MSIL/Agent.VIF
- Fsecure: Heuristic.HEUR/AGEN.1305561
+ Mcafee: clean
+ Sophos: clean
+ Trendmicro: clean
- Windefender: Trojan:MSIL/Polyransom.psyF!MTB

References