Analysis
- max time kernel
148s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
28/02/2024, 08:21
General
- Target 0253e5647a3286d1df5a3d7d91d655e2.exe
- Size 2.4MB
- Sample240228-j8z32afc67
- SHA256 4ac4a8a49e5c6fd0fbf62b71ecacd5bd6209758dc5162088d03bd194dd7d594a
Malware Config
Extracted
-
socks5systemz
-
http://bneyefm.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ef610c0e7909e3c
Signatures
- Detect Socks5Systemz Payload 2 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\0253e5647a3286d1df5a3d7d91d655e2.exe"C:\Users\Admin\AppData\Local\Temp\0253e5647a3286d1df5a3d7d91d655e2.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-4OR3B.tmp\0253e5647a3286d1df5a3d7d91d655e2.tmp"C:\Users\Admin\AppData\Local\Temp\is-4OR3B.tmp\0253e5647a3286d1df5a3d7d91d655e2.tmp" /SL5="$60182,2142469,56832,C:\Users\Admin\AppData\Local\Temp\0253e5647a3286d1df5a3d7d91d655e2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe"C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe" -i3⤵
- Executes dropped EXE
-
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C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe"C:\Users\Admin\AppData\Local\CD Shrink\cdshrink.exe" -s3⤵
- Executes dropped EXE
-
-
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3732 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
cdshrink.exe
cdshrink.exe
cdshrink.exe
0253e5647a3286d1df5a3d7d91d655e2.tmp
_iscrypt.dll
memory/1824-78-0x0000000000990000-0x0000000000A32000-memory.dmp
memory/1824-73-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-83-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-80-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-89-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-67-0x0000000000990000-0x0000000000A32000-memory.dmp
memory/1824-93-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-76-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-45-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-86-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-49-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-66-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-53-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-54-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-57-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-60-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/1824-62-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/2336-50-0x00000000007A0000-0x00000000007A1000-memory.dmp
memory/2336-47-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/2336-7-0x00000000007A0000-0x00000000007A1000-memory.dmp
memory/3828-42-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/3828-39-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/3828-38-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/3828-37-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4948-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4948-46-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4948-2-0x0000000000400000-0x0000000000414000-memory.dmp