Analysis
- max time kernel
147s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
10/08/2024, 22:29
General
- Target 920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.exe
- Size 4.5MB
- Sample240810-2d9m4a1fll
- SHA256 920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 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.
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.exe"C:\Users\Admin\AppData\Local\Temp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-4Q2ST.tmp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.tmp"C:\Users\Admin\AppData\Local\Temp\is-4Q2ST.tmp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.tmp" /SL5="$700DC,4411396,54272,C:\Users\Admin\AppData\Local\Temp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
avicodec32_64.exe
920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.tmp
_iscrypt.dll
_isdecmp.dll
memory/1128-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1128-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1128-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1236-94-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-82-0x0000000002640000-0x00000000026E2000-memory.dmp
memory/1236-115-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-65-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-112-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-108-0x0000000002640000-0x00000000026E2000-memory.dmp
memory/1236-68-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-71-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-74-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-77-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-80-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-107-0x0000000002640000-0x00000000026E2000-memory.dmp
memory/1236-85-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-91-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-106-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-97-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-100-0x0000000000400000-0x0000000000815000-memory.dmp
memory/1236-103-0x0000000000400000-0x0000000000815000-memory.dmp
memory/5020-13-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/5020-67-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/5036-61-0x0000000000400000-0x0000000000815000-memory.dmp
memory/5036-58-0x0000000000400000-0x0000000000815000-memory.dmp
memory/5036-60-0x0000000000400000-0x0000000000815000-memory.dmp