Resubmissions
03-01-2022 15:51
220103-tagh5sbdh2 10Analysis
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max time kernel
151s -
max time network
153s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
03-01-2022 15:51
General
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Target
kr.exe
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Size
786KB
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MD5
899dc9cc6e7516536bf5e816e8cecf55
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SHA1
6c07fc00ed2202798194749aa8037bb0ad38bb00
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SHA256
5f84ad4413ad6dcdea0cb3aa206cc4df29e1bad9d9598912c323c931d568ac90
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SHA512
445016f0e37ee3ecec319b73713d083711608c044f855e16268f89c88d460e95d85b79d375534ac6b7a4a0e869c49470d49b7e325ff0507c550107d593ae688c
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 64 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\kr.exe"C:\Users\Admin\AppData\Local\Temp\kr.exe"1⤵
- Drops startup file
- 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"2⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK 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
57d24b003b499889c23f451ba1c77567
SHA190b27ac364d19c19193aad78b86a087959e34b57
SHA256d875daac488dee83c252ffd57572a7e9e9ef4c752b802f3d781c209eb810435f
SHA512ee76d44bd76d5946af704cd84d029e84c40b7262c4d9aeef157a6e7272ed341de2bf081fb923bc2b335432ed53980ccdd837a94b6a570511873e65fc78d79181
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\Users\Admin\AppData\Local\Temp\GetX64BTIT.exeMD5
b4cd27f2b37665f51eb9fe685ec1d373
SHA17f08febf0fdb7fc9f8bf35a10fb11e7de431abe0
SHA25691f1023142b7babf6ff75dad984c2a35bde61dc9e61f45483f4b65008576d581
SHA512e025f65224d78f5fd0abebe281ac0d44a385b2641e367cf39eed6aefada20a112ac47f94d7febc4424f1db6a6947bac16ff83ef93a8d745b3cddfdbe64c49a1e
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memory/112-60-0x0000000000000000-mapping.dmp
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memory/1672-55-0x0000000075DF1000-0x0000000075DF3000-memory.dmpFilesize
8KB
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memory/1672-56-0x0000000000A10000-0x0000000000ADA000-memory.dmpFilesize
808KB
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memory/1672-58-0x0000000002700000-0x000000000334A000-memory.dmpFilesize
12.3MB
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memory/1672-57-0x00000000003A0000-0x00000000003E3000-memory.dmpFilesize
268KB
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memory/1672-63-0x0000000010000000-0x0000000010016000-memory.dmpFilesize
88KB
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memory/1672-64-0x0000000000230000-0x000000000024F000-memory.dmpFilesize
124KB