Analysis
- max time kernel
145s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
10/01/2025, 05:18
General
- Target JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe
- Size 156KB
- Sample250110-fzmvkawkdn
- SHA256 aead3b29e4eb3a2c5499b67eb81a609bd85944a1d7ec6b9557be527a0c566929
Malware Config
Extracted
-
asyncrat
-
0.5.7B
-
Default
-
winx.xcapdatap.capetown:6204
-
AsyncMutex_6SI8OkPnk
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Asyncrat family
- ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqVwJtjSm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84AC.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe"{path}"2⤵
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
JaffaCakes118_dbf61f566a642cdd0df3fc1d078debb8.exe.log
tmp84AC.tmp
memory/640-8-0x00000000743FE000-0x00000000743FF000-memory.dmp
memory/640-2-0x0000000005AA0000-0x0000000006044000-memory.dmp
memory/640-4-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/640-5-0x0000000005550000-0x000000000555A000-memory.dmp
memory/640-6-0x00000000057F0000-0x000000000588C000-memory.dmp
memory/640-7-0x0000000005540000-0x0000000005548000-memory.dmp
memory/640-0-0x00000000743FE000-0x00000000743FF000-memory.dmp
memory/640-9-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/640-10-0x0000000006250000-0x0000000006268000-memory.dmp
memory/640-3-0x0000000005590000-0x0000000005622000-memory.dmp
memory/640-17-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/640-1-0x0000000000B60000-0x0000000000B8C000-memory.dmp
memory/4016-14-0x0000000000400000-0x0000000000412000-memory.dmp
memory/4016-18-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/4016-19-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/4016-20-0x00000000743F0000-0x0000000074BA0000-memory.dmp
memory/4016-21-0x00000000743F0000-0x0000000074BA0000-memory.dmp