Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
02/06/2024, 08:41
General
- Target a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.exe
- Size 6.8MB
- Sample240602-klj9qsgd2w
- SHA256 a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 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 FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.exe"C:\Users\Admin\AppData\Local\Temp\a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-J7491.tmp\a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.tmp"C:\Users\Admin\AppData\Local\Temp\is-J7491.tmp\a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.tmp" /SL5="$7011E,6890252,54272,C:\Users\Admin\AppData\Local\Temp\a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe"C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe"C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
_iscrypt.dll
_isdecmp.dll
a88acfab5a92843a175a6f8e450dfb32d2e0719dc804d7a068f7f83e7f3fe3a5.tmp
voicechangeremerald.exe
memory/988-66-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/988-71-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/988-69-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/988-65-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-77-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-106-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-122-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-73-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-119-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-115-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-112-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-80-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-81-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-84-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-87-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-90-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-93-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-94-0x0000000000BA0000-0x0000000000C42000-memory.dmp
memory/2108-100-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-103-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/2108-109-0x0000000000400000-0x00000000008AC000-memory.dmp
memory/3192-22-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3192-76-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3608-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3608-75-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3608-3-0x0000000000401000-0x000000000040B000-memory.dmp