Analysis
- max time kernel
141s - max time network
126s - platform
windows11-21h2_x64 - resource
win11-20240419-en - resource tags
- submitted
25/06/2024, 14:07
General
- Target crt.exe
- Size 5.1MB
- Sample240625-rfa77sthpe
- SHA256 6185fdacf0b903ea8bb2eee380a0c60e314ad7da93c7833b188c796f3f97b5be
Malware Config
Extracted
-
socks5systemz
-
ccusuvq.net
-
http://ccusuvq.net/search/?q=67e28dd83e55f3201607a91c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa48e8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff612c2eb909939
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.
- 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-FTVDA.tmp\crt.tmp"C:\Users\Admin\AppData\Local\Temp\is-FTVDA.tmp\crt.tmp" /SL5="$40216,5052624,54272,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/860-64-0x0000000000400000-0x0000000000738000-memory.dmp
memory/860-59-0x0000000000400000-0x0000000000738000-memory.dmp
memory/860-63-0x0000000000400000-0x0000000000738000-memory.dmp
memory/860-60-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-71-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-97-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-116-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-67-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-68-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-113-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-109-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-106-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-73-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-75-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-78-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-81-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-84-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-85-0x0000000000B00000-0x0000000000BA2000-memory.dmp
memory/2344-88-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-94-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-103-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2344-100-0x0000000000400000-0x0000000000738000-memory.dmp
memory/2440-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2440-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2440-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/2768-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2768-70-0x0000000000400000-0x00000000004BA000-memory.dmp