Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
08/06/2024, 08:51
General
- Target e983c404a021ca5f841ebcdd9bb2ea5d.exe
- Size 4.8MB
- Sample240608-kr54dsbe29
- SHA256 3ac649efec98618189a42456ee70029e75c7fcbafc1ccee4e2cd54c8be0f5ce9
Malware Config
Extracted
-
socks5systemz
-
bunxepn.com
-
http://bunxepn.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c3e9929933
-
http://bunxepn.com/search/?q=67e28dd83a5da32a155afd1b7c27d78406abdd88be4b12eab517aa5c96bd86eb9c864996148ab2865b77f80ebad9c40f7cb63037ed2ab423a4674383ba915d911ec07bb606a0708727e40ea678c45abbe74ffb0e2807e12571c17f3e83fe16c1e89d993dca6c9e
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\e983c404a021ca5f841ebcdd9bb2ea5d.exe"C:\Users\Admin\AppData\Local\Temp\e983c404a021ca5f841ebcdd9bb2ea5d.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8JMP8.tmp\e983c404a021ca5f841ebcdd9bb2ea5d.tmp"C:\Users\Admin\AppData\Local\Temp\is-8JMP8.tmp\e983c404a021ca5f841ebcdd9bb2ea5d.tmp" /SL5="$70172,4779927,54272,C:\Users\Admin\AppData\Local\Temp\e983c404a021ca5f841ebcdd9bb2ea5d.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent.exe" -s3⤵
- Executes dropped EXE
-
-
-
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=3496 --field-trial-handle=2236,i,5367110156796017614,12594004256180761011,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lesserextent.exe
_iscrypt.dll
e983c404a021ca5f841ebcdd9bb2ea5d.tmp
memory/448-60-0x0000000000400000-0x0000000000714000-memory.dmp
memory/448-65-0x0000000000400000-0x0000000000714000-memory.dmp
memory/448-61-0x0000000000400000-0x0000000000714000-memory.dmp
memory/448-59-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-74-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-84-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-118-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-68-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-115-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-111-0x0000000000920000-0x00000000009C2000-memory.dmp
memory/1764-71-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-110-0x0000000000920000-0x00000000009C2000-memory.dmp
memory/1764-75-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-78-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-81-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-109-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-87-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-88-0x0000000000920000-0x00000000009C2000-memory.dmp
memory/1764-94-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-97-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-100-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-103-0x0000000000400000-0x0000000000714000-memory.dmp
memory/1764-106-0x0000000000400000-0x0000000000714000-memory.dmp
memory/3108-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3108-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3108-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4984-7-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4984-70-0x0000000000400000-0x00000000004BA000-memory.dmp