Analysis
- max time kernel
146s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
14/06/2024, 22:25
General
- Target 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
- Size 4.8MB
- Sample240614-2b8ysasdkk
- SHA256 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9
Malware Config
Extracted
-
socks5systemz
-
bxdywdu.com
-
http://bxdywdu.com/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978f371ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff715c0eb959a3f
-
http://bxdywdu.com/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12eab517aa5c96bd86e59d8e4896148ab2865b77f80ebad9950f7cb63037ed2ab423a4364383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e7919a3fcd6f92
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\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-1A35V.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp"C:\Users\Admin\AppData\Local\Temp\is-1A35V.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp" /SL5="$40230,4801606,54272,C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
m4atomp3converter.exe
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp
_iscrypt.dll
memory/864-71-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/864-73-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/864-16-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1536-60-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1536-63-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1536-65-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1536-59-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1556-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1556-4-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1556-70-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1696-76-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-97-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-69-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1696-68-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-77-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-80-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-83-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-86-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-89-0x0000000000A90000-0x0000000000B32000-memory.dmp
memory/1696-90-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-92-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1696-72-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-100-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-101-0x00007FFE38180000-0x00007FFE38389000-memory.dmp
memory/1696-104-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-107-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-110-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-113-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-114-0x0000000000A90000-0x0000000000B32000-memory.dmp
memory/1696-115-0x0000000000A90000-0x0000000000B32000-memory.dmp
memory/1696-119-0x0000000000400000-0x00000000006EC000-memory.dmp
memory/1696-122-0x0000000000400000-0x00000000006EC000-memory.dmp