Analysis
- max time kernel
169s - max time network
181s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
05/01/2024, 11:52
General
- Target file.exe
- Size 4.5MB
- Sample240105-n1qa3scbc8
- SHA256 f47ae4e664869d909874896cdc389a1a808054a9cd8bd495fe77d608bd01065a
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-NHTQ9.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-NHTQ9.tmp\file.tmp" /SL5="$A01DA,4461344,54272,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\VB Calculator\vb-calculator.exe"C:\Users\Admin\AppData\Local\VB Calculator\vb-calculator.exe" -i3⤵
- Executes dropped EXE
-
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C:\Users\Admin\AppData\Local\VB Calculator\vb-calculator.exe"C:\Users\Admin\AppData\Local\VB Calculator\vb-calculator.exe" -s3⤵
- Executes dropped EXE
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
_iscrypt.dll
_isdecmp.dll
file.tmp
vb-calculator.exe
memory/1616-139-0x0000000000400000-0x0000000000538000-memory.dmp
memory/1616-136-0x0000000000400000-0x0000000000538000-memory.dmp
memory/1616-135-0x0000000000400000-0x0000000000538000-memory.dmp
memory/1616-134-0x0000000000400000-0x0000000000538000-memory.dmp
memory/1616-131-0x0000000000400000-0x0000000000538000-memory.dmp
memory/3660-25-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3660-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3660-7-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3660-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3792-28-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/3792-29-0x0000000002200000-0x0000000002201000-memory.dmp
memory/3792-26-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/3792-132-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/3792-24-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/3792-8-0x0000000002200000-0x0000000002201000-memory.dmp
memory/4120-146-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-143-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-149-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-150-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-153-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-156-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-159-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-162-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-165-0x0000000000890000-0x0000000000932000-memory.dmp
memory/4120-167-0x0000000000890000-0x0000000000932000-memory.dmp
memory/4120-172-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-175-0x0000000000400000-0x0000000000538000-memory.dmp
memory/4120-177-0x0000000000890000-0x0000000000932000-memory.dmp