Analysis
- max time kernel
160s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
11/05/2022, 02:29
General
- Target b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe
- Size 824KB
- Sample220511-cy3mvadfa9
- SHA256 b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592
Malware Config
Signatures
- MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
- MassLogger Main Payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe"C:\Users\Admin\AppData\Local\Temp\b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bBEKkPV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2AC4.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe'3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
b134fc241ecd93ac658ded7bdad5eaf5f600f255e3fc05c383c23aad8b045592.exe.log
tmp2AC4.tmp
memory/1356-149-0x00000000065E0000-0x00000000065FA000-memory.dmp
memory/1356-143-0x0000000004AB0000-0x0000000004AE6000-memory.dmp
memory/1356-148-0x00000000076F0000-0x0000000007D6A000-memory.dmp
memory/1356-147-0x0000000004DD0000-0x0000000004DEE000-memory.dmp
memory/1356-150-0x0000000007120000-0x00000000071B6000-memory.dmp
memory/1356-146-0x00000000051C0000-0x0000000005226000-memory.dmp
memory/1356-145-0x00000000050A0000-0x00000000050C2000-memory.dmp
memory/1356-144-0x0000000005270000-0x0000000005898000-memory.dmp
memory/1356-151-0x0000000006650000-0x0000000006672000-memory.dmp
memory/3756-140-0x0000000005C80000-0x0000000005CE6000-memory.dmp
memory/3756-139-0x0000000000400000-0x0000000000486000-memory.dmp
memory/4744-130-0x00000000009B0000-0x0000000000A84000-memory.dmp
memory/4744-134-0x0000000008C00000-0x0000000008C9C000-memory.dmp
memory/4744-133-0x0000000005430000-0x000000000543A000-memory.dmp
memory/4744-132-0x0000000005470000-0x0000000005502000-memory.dmp
memory/4744-131-0x0000000005AE0000-0x0000000006084000-memory.dmp