Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
10/08/2024, 22:38
General
- Target 920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.exe
- Size 4.5MB
- Sample240810-2kvgrawdjf
- 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-I5AI7.tmp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.tmp"C:\Users\Admin\AppData\Local\Temp\is-I5AI7.tmp\920477db829ff70d2a2d48c58854d7429267bd0a114c48fdc4cf13f9c815b394.tmp" /SL5="$9016A,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/3040-58-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3040-61-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3040-59-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-71-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-83-0x00000000026B0000-0x0000000002752000-memory.dmp
memory/3092-114-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-65-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-111-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-107-0x00000000026B0000-0x0000000002752000-memory.dmp
memory/3092-68-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-106-0x00000000026B0000-0x0000000002752000-memory.dmp
memory/3092-74-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-77-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-80-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-105-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-87-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-90-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-93-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-96-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-99-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3092-102-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3380-13-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3380-67-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4884-1-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4884-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4884-2-0x0000000000401000-0x000000000040B000-memory.dmp