Analysis
- max time kernel
103s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20220718-en - resource tags
- submitted
19/07/2022, 03:01
General
- Target a2c723046a2c17a707b9637692fffb71.exe
- Size 879KB
- Sample220719-dhwp2agca3
- SHA256 fae525089f850763e561a756f8378667c9ed081493ba9871847c83e0013a292d
Malware Config
Extracted
-
oski
-
masterwork.me
Signatures
- Oski
Oski is an infostealer targeting browser data, crypto wallets.
- 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 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a2c723046a2c17a707b9637692fffb71.exe"C:\Users\Admin\AppData\Local\Temp\a2c723046a2c17a707b9637692fffb71.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UFpvpuHQeW.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UFpvpuHQeW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp30D4.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\a2c723046a2c17a707b9637692fffb71.exe"C:\Users\Admin\AppData\Local\Temp\a2c723046a2c17a707b9637692fffb71.exe"2⤵
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmp30D4.tmp
memory/840-131-0x0000000005510000-0x0000000005AB4000-memory.dmp
memory/840-132-0x0000000005040000-0x00000000050D2000-memory.dmp
memory/840-133-0x0000000005020000-0x000000000502A000-memory.dmp
memory/840-134-0x00000000074F0000-0x000000000758C000-memory.dmp
memory/840-135-0x000000000B720000-0x000000000B786000-memory.dmp
memory/840-130-0x0000000000590000-0x0000000000672000-memory.dmp
memory/4848-145-0x00000000056C0000-0x0000000005726000-memory.dmp
memory/4848-149-0x0000000006BA0000-0x0000000006BD2000-memory.dmp
memory/4848-140-0x0000000005890000-0x0000000005EB8000-memory.dmp
memory/4848-158-0x0000000007C10000-0x0000000007C18000-memory.dmp
memory/4848-143-0x0000000005620000-0x0000000005642000-memory.dmp
memory/4848-157-0x0000000007C30000-0x0000000007C4A000-memory.dmp
memory/4848-156-0x0000000007B20000-0x0000000007B2E000-memory.dmp
memory/4848-155-0x0000000007B70000-0x0000000007C06000-memory.dmp
memory/4848-154-0x0000000007960000-0x000000000796A000-memory.dmp
memory/4848-148-0x00000000065E0000-0x00000000065FE000-memory.dmp
memory/4848-138-0x0000000002CA0000-0x0000000002CD6000-memory.dmp
memory/4848-150-0x0000000070CD0000-0x0000000070D1C000-memory.dmp
memory/4848-151-0x0000000006B80000-0x0000000006B9E000-memory.dmp
memory/4848-152-0x0000000007F50000-0x00000000085CA000-memory.dmp
memory/4848-153-0x00000000078F0000-0x000000000790A000-memory.dmp
memory/4912-147-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4912-146-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4912-144-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4912-142-0x0000000000400000-0x0000000000438000-memory.dmp