Analysis
- max time kernel
142s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
03/08/2024, 18:53
General
- Target crt.exe
- Size 3.8MB
- Sample240803-xjsvbawgnh
- SHA256 0384c6409bb5afac939fef6bb65bb6e5ca9d61eee4f20652e754cf0410cb7ebb
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 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.
- 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\crt.exe"C:\Users\Admin\AppData\Local\Temp\crt.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-MQIG8.tmp\crt.tmp"C:\Users\Admin\AppData\Local\Temp\is-MQIG8.tmp\crt.tmp" /SL5="$9004A,3727048,54272,C:\Users\Admin\AppData\Local\Temp\crt.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\Jeengle\jeengle32_64.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe"C:\Users\Admin\AppData\Local\Jeengle\jeengle32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
jeengle32_64.exe
_iscrypt.dll
crt.tmp
memory/1800-61-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1800-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1800-1-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3500-16-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3500-62-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3528-88-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-75-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-60-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-107-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-104-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-63-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-66-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-69-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-72-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-100-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-78-0x0000000002A80000-0x0000000002B22000-memory.dmp
memory/3528-80-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-85-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-97-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-91-0x0000000000400000-0x0000000000863000-memory.dmp
memory/3528-94-0x0000000000400000-0x0000000000863000-memory.dmp
memory/4676-52-0x0000000000400000-0x0000000000863000-memory.dmp
memory/4676-57-0x0000000000400000-0x0000000000863000-memory.dmp
memory/4676-53-0x0000000000400000-0x0000000000863000-memory.dmp
memory/4676-56-0x0000000000400000-0x0000000000863000-memory.dmp