Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
24/03/2024, 02:48
General
- Target b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.exe
- Size 2.0MB
- Sample240324-dafnvabd6v
- SHA256 b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9
Malware Config
Extracted
-
socks5systemz
-
http://dtkhxmb.info/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f671ea771795af8e05c644db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c4e7909f3b
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Detects executables packed with VMProtect. 18 IoCs
- 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.exe"C:\Users\Admin\AppData\Local\Temp\b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-UEO3N.tmp\b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.tmp"C:\Users\Admin\AppData\Local\Temp\is-UEO3N.tmp\b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.tmp" /SL5="$7011A,1737651,54272,C:\Users\Admin\AppData\Local\Temp\b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
markdownpad32.exe
_iscrypt.dll
_isdecmp.dll
b004cdd254054b6cc1f80edcedb17c05721e9f529d3c46d4d1f0ce02570b60a9.tmp
memory/2136-54-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/2136-56-0x0000000002100000-0x0000000002101000-memory.dmp
memory/2136-7-0x0000000002100000-0x0000000002101000-memory.dmp
memory/2588-83-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-87-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-103-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-52-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-100-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-96-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-55-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-93-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-59-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-60-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-63-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-66-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-69-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-70-0x0000000000880000-0x0000000000922000-memory.dmp
memory/2588-74-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-75-0x0000000000880000-0x0000000000922000-memory.dmp
memory/2588-80-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-90-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2588-84-0x0000000000880000-0x0000000000922000-memory.dmp
memory/2912-45-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2912-44-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/2912-48-0x0000000000400000-0x00000000005E4000-memory.dmp
memory/4152-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4152-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4152-53-0x0000000000400000-0x0000000000414000-memory.dmp