Analysis
- max time kernel
96s - max time network
98s - platform
windows10_x64 - resource
win10v20210408 - submitted
02/10/2021, 15:56
General
- Target ee74831e90dea12bd4639e69a530e412.exe
- Size 63KB
- Sample211002-tdcpcsefbn
- SHA256 ee3a537e93bb22332bf7e3f8d9286870208f7fd75ce60ce91ae23f87901b22eb
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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ee74831e90dea12bd4639e69a530e412.exe"C:\Users\Admin\AppData\Local\Temp\ee74831e90dea12bd4639e69a530e412.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\4447628.scr"C:\Users\Admin\AppData\Roaming\4447628.scr" /S2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\4282059.scr"C:\Users\Admin\AppData\Roaming\4282059.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/808-116-0x0000000002AE0000-0x0000000002AE1000-memory.dmp
memory/808-117-0x0000000005170000-0x0000000005171000-memory.dmp
memory/808-114-0x00000000006E0000-0x00000000006E1000-memory.dmp
memory/1184-121-0x0000000000660000-0x0000000000661000-memory.dmp
memory/1184-141-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
memory/1184-129-0x0000000004F70000-0x0000000004FA9000-memory.dmp
memory/1184-132-0x0000000001180000-0x0000000001181000-memory.dmp
memory/1184-126-0x0000000001160000-0x0000000001161000-memory.dmp
memory/1184-144-0x000000000DAA0000-0x000000000DAA1000-memory.dmp
memory/1636-127-0x0000000000760000-0x0000000000761000-memory.dmp
memory/1636-130-0x0000000000EC0000-0x0000000000EC1000-memory.dmp
memory/1636-131-0x000000000A9B0000-0x000000000A9B1000-memory.dmp
memory/2340-140-0x000000000A280000-0x000000000A281000-memory.dmp
memory/2340-145-0x000000000ADA0000-0x000000000ADA1000-memory.dmp
memory/2340-146-0x0000000004E50000-0x0000000004E51000-memory.dmp