Analysis
- max time kernel
142s - max time network
135s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
25/06/2024, 14:07
General
- Target crt.exe
- Size 5.1MB
- Sample240625-rfa77sthpe
- SHA256 6185fdacf0b903ea8bb2eee380a0c60e314ad7da93c7833b188c796f3f97b5be
Malware Config
Extracted
-
socks5systemz
-
bfuzipi.com
-
http://bfuzipi.com/search/?q=67e28dd8685af379125bfd4e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff612c2eb909939
-
http://bfuzipi.com/search/?q=67e28dd8685af379125bfd4e7c27d78406abdd88be4b12eab517aa5c96bd86ee92824e865a8bbc896c58e713bc90c91c36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52bee348ee4c2b14a82966836f23d7f210c7ee9c9939c96a9514
Signatures
- Detect Socks5Systemz Payload 3 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-0BO17.tmp\crt.tmp"C:\Users\Admin\AppData\Local\Temp\is-0BO17.tmp\crt.tmp" /SL5="$70214,5052624,54272,C:\Users\Admin\AppData\Local\Temp\crt.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe"C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe"C:\Users\Admin\AppData\Local\MP3 RIP Free Edition\mp3ripfreeedition32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
mp3ripfreeedition32.exe
crt.tmp
_iscrypt.dll
memory/524-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/524-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1448-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1448-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1448-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1712-59-0x0000000000400000-0x0000000000738000-memory.dmp
memory/1712-60-0x0000000000400000-0x0000000000738000-memory.dmp
memory/1712-64-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-76-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-95-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-73-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-67-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-79-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-82-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-85-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4136-87-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-92-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-70-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-98-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-101-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-104-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-107-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-109-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4136-108-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4136-113-0x0000000000400000-0x0000000000738000-memory.dmp
memory/4136-116-0x0000000000400000-0x0000000000738000-memory.dmp