Analysis
- max time kernel
149s - max time network
155s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
03/05/2026, 19:55
General
- Target _58165345738044d0f11554f8b8907830c537a1c9f9cb7c7e1015836d73b15f02.exe
- Size 2.5MB
- Sample260503-yncjkabx5q
- SHA256 58165345738044d0f11554f8b8907830c537a1c9f9cb7c7e1015836d73b15f02
Malware Config
Signatures
- Family: UnixStealer
UnixStealer is a Windows stealer written in C#.
- Detects UnixStealer payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Browser Information Discovery 1 TTPs
Enumerate browser information.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\_58165345738044d0f11554f8b8907830c537a1c9f9cb7c7e1015836d73b15f02.exe"C:\Users\Admin\AppData\Local\Temp\_58165345738044d0f11554f8b8907830c537a1c9f9cb7c7e1015836d73b15f02.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\cmd.execmd.exe /c start "" "C:\Users\Admin\AppData\Local\Temp\tmp2A28.tmp.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tmp2A28.tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp2A28.tmp.exe"3⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp2A28.tmp.exe
tmp2B0F.tmp.dat
tmp2B21.tmp.dat
memory/3196-4-0x00000233FCC40000-0x00000233FCC90000-memory.dmp
memory/3196-7-0x00000233FD130000-0x00000233FD140000-memory.dmp
memory/3196-138-0x00000233FD120000-0x00000233FD12C000-memory.dmp
memory/3196-140-0x0000023399A80000-0x0000023399A8B000-memory.dmp
memory/3196-141-0x0000023398040000-0x0000023398052000-memory.dmp
memory/3196-139-0x0000023399A60000-0x0000023399A7E000-memory.dmp