Analysis
- max time kernel
150s - max time network
155s - platform
windows11-21h2_x64 - resource
win11-20240319-en - resource tags
- submitted
30/03/2024, 01:13
General
- Target 52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.exe
- Size 2.0MB
- Sample240330-blcefsed88
- SHA256 52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11
Malware Config
Extracted
-
socks5systemz
-
http://bgaquwi.com/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe16c6ee97923b
Signatures
- Detect Socks5Systemz Payload 2 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 WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.exe"C:\Users\Admin\AppData\Local\Temp\52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-0O4GN.tmp\52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.tmp"C:\Users\Admin\AppData\Local\Temp\is-0O4GN.tmp\52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.tmp" /SL5="$70206,1762792,54272,C:\Users\Admin\AppData\Local\Temp\52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe"C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe"C:\Users\Admin\AppData\Local\Codec Pack Update\codecpackupdate.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
codecpackupdate.exe
52b21fb052b0f44fb6ac97d1dc53c60d55ce07365f8a85f0ba2c75eda8e4da11.tmp
_iscrypt.dll
memory/1608-48-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/1608-50-0x0000000000860000-0x0000000000861000-memory.dmp
memory/1608-7-0x0000000000860000-0x0000000000861000-memory.dmp
memory/2300-39-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/2300-40-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/2300-43-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/2300-38-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/2348-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2348-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2348-47-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3688-63-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-74-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-53-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-54-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-57-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-60-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-46-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-66-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-68-0x0000000000960000-0x0000000000A02000-memory.dmp
memory/3688-49-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-77-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-78-0x0000000000960000-0x0000000000A02000-memory.dmp
memory/3688-81-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-84-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-87-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-90-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-94-0x0000000000400000-0x00000000005D8000-memory.dmp
memory/3688-97-0x0000000000400000-0x00000000005D8000-memory.dmp