Analysis
- max time kernel
142s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
05/08/2024, 01:40
General
- Target a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.exe
- Size 4.1MB
- Sample240805-b3z7vaxbpg
- SHA256 a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da
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\a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.exe"C:\Users\Admin\AppData\Local\Temp\a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-SSGOP.tmp\a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.tmp"C:\Users\Admin\AppData\Local\Temp\is-SSGOP.tmp\a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.tmp" /SL5="$80052,4067069,54272,C:\Users\Admin\AppData\Local\Temp\a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.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\Combiner Free\combinerfree32.exe"C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe"C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
combinerfree32.exe
_iscrypt.dll
_isdecmp.dll
a045aae04ded2c18b1ab1e206c18bf954844afd6b9c6e9efcecc4cc05dae71da.tmp
memory/1124-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1124-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1124-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1140-19-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/1140-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/1848-91-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-86-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-66-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-115-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-112-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-69-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-72-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-75-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-78-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-81-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-83-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/1848-108-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/1848-107-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/1848-94-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-97-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-100-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-103-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1848-106-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3828-58-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3828-63-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3828-59-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/3828-61-0x0000000000400000-0x00000000006C5000-memory.dmp