Analysis
- max time kernel
146s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
08/06/2024, 10:15
General
- Target a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.exe
- Size 4.6MB
- Sample240608-mac3dsbg42
- SHA256 a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45
Malware Config
Extracted
-
socks5systemz
-
ckzmodj.net
-
http://ckzmodj.net/search/?q=67e28dd83f54f37a445aab4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff819c4ee929238
-
http://ckzmodj.net/search/?q=67e28dd83f54f37a445aab4e7c27d78406abdd88be4b12eab517aa5c96bd86ea97844496148ab2865b77f80ebad9c30f7cb63037ed2ab423a4334383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e89d9e3aca6795
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.exe"C:\Users\Admin\AppData\Local\Temp\a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-MPFVK.tmp\a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.tmp"C:\Users\Admin\AppData\Local\Temp\is-MPFVK.tmp\a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.tmp" /SL5="$40220,4585228,54272,C:\Users\Admin\AppData\Local\Temp\a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
lesserextent.exe
_iscrypt.dll
a83d0865c2178833fe29d6a1141f3bcfdfcc426ca373028688bba12050b31e45.tmp
memory/2784-59-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/2784-60-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/2784-64-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/3044-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3044-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3732-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/3732-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3732-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4480-76-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-96-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-73-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-67-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-79-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-82-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-83-0x0000000002920000-0x00000000029C2000-memory.dmp
memory/4480-88-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-93-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-70-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-99-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-102-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-105-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-108-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-109-0x0000000002920000-0x00000000029C2000-memory.dmp
memory/4480-110-0x0000000002920000-0x00000000029C2000-memory.dmp
memory/4480-114-0x0000000000400000-0x00000000006E5000-memory.dmp
memory/4480-117-0x0000000000400000-0x00000000006E5000-memory.dmp