Analysis
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max time kernel
150s -
max time network
92s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
28-01-2021 15:25
General
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Target
gvim.exe
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Size
3.6MB
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MD5
8e8f7ff797c292231959e4dd410a98da
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SHA1
5fba19ae9f76b445d96dbca71f53113492b09d49
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SHA256
ace9f321c9967b2ffe3bef9056c113b20040fe8831351082e186125aeea8ab0b
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SHA512
c1e510a6d5f57eaad3b744e20145c07241b1e857e1a1832a0878cd6beedf115a40c8bfd655896d800579110687d208a59416044fdbd2811102aac334720a3c27
Malware Config
Signatures
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Osiris
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Executes dropped EXE 1 IoCs
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Drops startup file 1 IoCs
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Loads dropped DLL 1 IoCs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Uses Tor communications 1 TTPs
Malware can proxy its traffic through Tor for more anonymity.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 734 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\gvim.exe"C:\Users\Admin\AppData\Local\Temp\gvim.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\gvim.exe"C:\Users\Admin\AppData\Local\Temp\gvim.exe"2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe"C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe"3⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09}1⤵
- Drops startup file
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exeMD5
b4cd27f2b37665f51eb9fe685ec1d373
SHA17f08febf0fdb7fc9f8bf35a10fb11e7de431abe0
SHA25691f1023142b7babf6ff75dad984c2a35bde61dc9e61f45483f4b65008576d581
SHA512e025f65224d78f5fd0abebe281ac0d44a385b2641e367cf39eed6aefada20a112ac47f94d7febc4424f1db6a6947bac16ff83ef93a8d745b3cddfdbe64c49a1e
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C:\Users\Admin\AppData\Local\Temp\x64btit.txtMD5
7ad4dc61b8b3dfcebe9741190b3fd4fa
SHA13840b22d40a1ee95fc61aadff831cb30c1b80df4
SHA2568967fa5b04d149697539716db8ba0268bb3f0e6eac924b4c3398a5767fe61a92
SHA512fa7dbfb0372123a04a4255fc0401bede663fa7a5ca3b72c165983b91c7b579973e1be46db3a18e3d6c72ca869c305fb749bd1550996f9d85474a4739bd9efb3e
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\Users\Admin\AppData\Local\Temp\GetX64BTIT.exeMD5
b4cd27f2b37665f51eb9fe685ec1d373
SHA17f08febf0fdb7fc9f8bf35a10fb11e7de431abe0
SHA25691f1023142b7babf6ff75dad984c2a35bde61dc9e61f45483f4b65008576d581
SHA512e025f65224d78f5fd0abebe281ac0d44a385b2641e367cf39eed6aefada20a112ac47f94d7febc4424f1db6a6947bac16ff83ef93a8d745b3cddfdbe64c49a1e
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memory/532-2-0x0000000075C61000-0x0000000075C63000-memory.dmpFilesize
8KB
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memory/532-4-0x0000000002EC0000-0x0000000002F3B000-memory.dmpFilesize
492KB
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memory/532-9-0x0000000002F40000-0x00000000030C0000-memory.dmpFilesize
1.5MB
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memory/560-14-0x0000000000000000-mapping.dmp
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memory/1248-5-0x0000000000000000-mapping.dmp
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memory/1248-6-0x0000000000400000-0x000000000045A000-memory.dmpFilesize
360KB
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memory/1248-10-0x00000000000B0000-0x00000000000B1000-memory.dmpFilesize
4KB
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memory/1248-11-0x0000000000400000-0x000000000045A000-memory.dmpFilesize
360KB
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memory/1248-12-0x0000000000140000-0x00000000001E9000-memory.dmpFilesize
676KB