Analysis
- max time kernel
149s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
28/05/2026, 10:26
General
- Target b3b13cd0fd2fa937161ca78950108e8128c31edc5c80d572099d73b8a4945f1f.exe
- Size 3.0MB
- Sample260528-mgj5aaev61
- SHA256 b3b13cd0fd2fa937161ca78950108e8128c31edc5c80d572099d73b8a4945f1f
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 2 IoCs
- Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Drops file in System32 directory 1 IoCs
- UPX packed file 7 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
- Program crash 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b3b13cd0fd2fa937161ca78950108e8128c31edc5c80d572099d73b8a4945f1f.exe"C:\Users\Admin\AppData\Local\Temp\b3b13cd0fd2fa937161ca78950108e8128c31edc5c80d572099d73b8a4945f1f.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\sc.exesc.exe start eff0eXkbzi2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
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C:\Windows\Syswow64\a8f42290C:\Windows\Syswow64\a8f422901⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1084 -s 1362⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1084 -ip 10841⤵
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C:\Windows\Syswow64\a8f42290C:\Windows\Syswow64\a8f422901⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 1362⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3440 -ip 34401⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
a8f42290
memory/1084-3-0x0000000000320000-0x0000000000625000-memory.dmp
memory/1084-4-0x0000000000320000-0x0000000000625000-memory.dmp
memory/3440-6-0x0000000000320000-0x0000000000625000-memory.dmp
memory/3440-7-0x0000000000320000-0x0000000000625000-memory.dmp
memory/4492-0-0x0000000000DF0000-0x00000000010F5000-memory.dmp
memory/4492-8-0x0000000000DF0000-0x00000000010F5000-memory.dmp