Analysis
- max time kernel
141s - max time network
133s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
04/06/2024, 08:32
General
- Target bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.exe
- Size 6.1MB
- Sample240604-kfkcjsah6v
- SHA256 bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c
Malware Config
Signatures
- Detect Socks5Systemz Payload 4 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\bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.exe"C:\Users\Admin\AppData\Local\Temp\bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8QRNF.tmp\bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.tmp"C:\Users\Admin\AppData\Local\Temp\is-8QRNF.tmp\bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.tmp" /SL5="$40234,6168457,54272,C:\Users\Admin\AppData\Local\Temp\bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe"C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe"C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
freeaudioamplifier.exe
bbc137e2faad69112caff067b1661539be3c9bdeac81044cd531f5bfe3f0883c.tmp
_iscrypt.dll
memory/1332-104-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-107-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-120-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-117-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-113-0x0000000002700000-0x00000000027A2000-memory.dmp
memory/1332-111-0x0000000002700000-0x00000000027A2000-memory.dmp
memory/1332-112-0x0000000002700000-0x00000000027A2000-memory.dmp
memory/1332-68-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-110-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-85-0x0000000002700000-0x00000000027A2000-memory.dmp
memory/1332-71-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-72-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-75-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-78-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-101-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-98-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-81-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-90-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-95-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/1332-84-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/2388-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2388-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2388-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4004-60-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/4004-65-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/4004-64-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/4004-59-0x0000000000400000-0x00000000008E2000-memory.dmp
memory/5088-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/5088-70-0x0000000000400000-0x00000000004BA000-memory.dmp