Analysis
- max time kernel
89s - max time network
91s - platform
windows10_x64 - resource
win10v20210408 - submitted
02/10/2021, 09:46
General
- Target d7b0929da8d096c120dc79fc2cf45f82.exe
- Size 62KB
- Sample211002-lrmgqaebc3
- SHA256 91829e8014c4495c44af3cfec37018afd663e5ad58b6cce44ff36cf44044b4a3
Malware Config
Signatures
- Executes dropped EXE 3 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\d7b0929da8d096c120dc79fc2cf45f82.exe"C:\Users\Admin\AppData\Local\Temp\d7b0929da8d096c120dc79fc2cf45f82.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\3267798.scr"C:\Users\Admin\AppData\Roaming\3267798.scr" /S2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\1679904.scr"C:\Users\Admin\AppData\Roaming\1679904.scr" /S2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/968-146-0x0000000003100000-0x0000000003101000-memory.dmp
memory/968-145-0x00000000087F0000-0x00000000087F1000-memory.dmp
memory/3704-135-0x000000000D960000-0x000000000D961000-memory.dmp
memory/3704-125-0x00000000006B0000-0x00000000006B1000-memory.dmp
memory/3704-128-0x0000000000FD0000-0x0000000000FD1000-memory.dmp
memory/3704-144-0x000000000DA00000-0x000000000DA01000-memory.dmp
memory/3704-131-0x0000000004E90000-0x0000000004ECB000-memory.dmp
memory/3704-132-0x00000000029B0000-0x00000000029B1000-memory.dmp
memory/3704-133-0x0000000004F80000-0x0000000004F81000-memory.dmp
memory/3740-129-0x0000000000BE0000-0x0000000000BE1000-memory.dmp
memory/3740-130-0x0000000007490000-0x0000000007491000-memory.dmp
memory/3740-124-0x0000000000240000-0x0000000000241000-memory.dmp
memory/4016-114-0x00000000005E0000-0x00000000005E1000-memory.dmp
memory/4016-117-0x0000000002730000-0x0000000002732000-memory.dmp
memory/4016-116-0x0000000000BF0000-0x0000000000BF1000-memory.dmp