Analysis
- max time kernel
141s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
23/03/2024, 06:26
General
- Target 88afdda7723f2a3f4c5b36a5b3884514.exe
- Size 2.0MB
- Sample240323-g67c8aed42
- SHA256 5066ac412c958ec0cc10a69dd658dcd6d1ddfa484f2810aed7d9d69d075992a4
Malware Config
Extracted
-
socks5systemz
-
http://bncnfsc.com/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe10c7ea97983c
-
http://bncnfsc.com/search/?q=67e28dd86e0bf32a420fa9187c27d78406abdd88be4b12eab517aa5c96bd86ee9c864c805a8bbc896c58e713bc90c91836b5281fc235a925ed3e03d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee949b3cc86d9411
Signatures
- Detect Socks5Systemz Payload 5 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.
- 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\88afdda7723f2a3f4c5b36a5b3884514.exe"C:\Users\Admin\AppData\Local\Temp\88afdda7723f2a3f4c5b36a5b3884514.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-L4IIP.tmp\88afdda7723f2a3f4c5b36a5b3884514.tmp"C:\Users\Admin\AppData\Local\Temp\is-L4IIP.tmp\88afdda7723f2a3f4c5b36a5b3884514.tmp" /SL5="$A0044,1721518,54272,C:\Users\Admin\AppData\Local\Temp\88afdda7723f2a3f4c5b36a5b3884514.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
markdownpad32.exe
_iscrypt.dll
_isdecmp.dll
88afdda7723f2a3f4c5b36a5b3884514.tmp
memory/368-56-0x00000000006A0000-0x00000000006A1000-memory.dmp
memory/368-7-0x00000000006A0000-0x00000000006A1000-memory.dmp
memory/368-54-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/1196-80-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-87-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-105-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-52-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-102-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-98-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/1196-55-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-97-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/1196-59-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-60-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-63-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-66-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-69-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-71-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/1196-74-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-75-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/1196-96-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-83-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-84-0x0000000000910000-0x00000000009B2000-memory.dmp
memory/1196-93-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1196-90-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/1856-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1856-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1856-53-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3452-45-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/3452-44-0x0000000000400000-0x00000000005E5000-memory.dmp
memory/3452-48-0x0000000000400000-0x00000000005E5000-memory.dmp