Analysis
- max time kernel
145s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
26/08/2022, 12:11
General
- Target PURCHASE ORDER_97876.pdf.exe
- Size 770KB
- Sample220826-pcltesdce6
- SHA256 5bfb66d35d5f423d65fc751d8a37bddc94f7103eb963ba83c505254f139f6452
Malware Config
Extracted
-
asyncrat
-
0.5.7B
-
Default
-
91.192.100.9:8976
-
AsyncMutex_6SI8OkPnk
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
- Async RAT 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 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_97876.pdf.exe"C:\Users\Admin\AppData\Local\Temp\PURCHASE ORDER_97876.pdf.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\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DgLYgESVqo.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DgLYgESVqo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp23C4.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
tmp23C4.tmp
memory/2792-144-0x0000000005390000-0x00000000053B2000-memory.dmp
memory/2792-146-0x0000000005D60000-0x0000000005DC6000-memory.dmp
memory/2792-157-0x0000000007A00000-0x0000000007A08000-memory.dmp
memory/2792-156-0x0000000007A20000-0x0000000007A3A000-memory.dmp
memory/2792-139-0x0000000002A30000-0x0000000002A66000-memory.dmp
memory/2792-145-0x00000000054B0000-0x0000000005516000-memory.dmp
memory/2792-141-0x00000000055C0000-0x0000000005BE8000-memory.dmp
memory/2792-155-0x0000000007910000-0x000000000791E000-memory.dmp
memory/2792-154-0x0000000007960000-0x00000000079F6000-memory.dmp
memory/2792-153-0x0000000007750000-0x000000000775A000-memory.dmp
memory/2792-152-0x00000000076E0000-0x00000000076FA000-memory.dmp
memory/2792-150-0x00000000069D0000-0x00000000069EE000-memory.dmp
memory/2792-147-0x00000000063E0000-0x00000000063FE000-memory.dmp
memory/2792-148-0x0000000006990000-0x00000000069C2000-memory.dmp
memory/2792-149-0x0000000071640000-0x000000007168C000-memory.dmp
memory/2792-151-0x0000000007D20000-0x000000000839A000-memory.dmp
memory/3468-143-0x0000000000400000-0x0000000000412000-memory.dmp
memory/4784-132-0x0000000000600000-0x00000000006C6000-memory.dmp
memory/4784-133-0x0000000005600000-0x0000000005BA4000-memory.dmp
memory/4784-135-0x0000000005060000-0x000000000506A000-memory.dmp
memory/4784-134-0x00000000050F0000-0x0000000005182000-memory.dmp
memory/4784-136-0x0000000008B30000-0x0000000008BCC000-memory.dmp