Analysis
- max time kernel
147s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
10/08/2024, 15:01
General
- Target 2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.exe
- Size 4.4MB
- Sample240810-sd6rrsvark
- SHA256 2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4
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\2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.exe"C:\Users\Admin\AppData\Local\Temp\2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-9U2L3.tmp\2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.tmp"C:\Users\Admin\AppData\Local\Temp\is-9U2L3.tmp\2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.tmp" /SL5="$9006C,4382425,54272,C:\Users\Admin\AppData\Local\Temp\2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.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.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32.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.exe
_iscrypt.dll
_isdecmp.dll
2e73526fa0d29181b6a5b1e070cfecbc4daaab235c488b75e621e97b374038d4.tmp
memory/1888-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1888-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1888-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2616-10-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/2616-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4836-99-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-85-0x0000000000C50000-0x0000000000CF2000-memory.dmp
memory/4836-66-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-117-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-114-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-69-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-72-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-73-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-76-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-79-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-82-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-65-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-88-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-93-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-96-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-110-0x0000000000C50000-0x0000000000CF2000-memory.dmp
memory/4836-102-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-105-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-108-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4836-109-0x0000000000C50000-0x0000000000CF2000-memory.dmp
memory/4916-58-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4916-62-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4916-60-0x0000000000400000-0x0000000000847000-memory.dmp