Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
08/06/2024, 09:43
General
- Target 9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.exe
- Size 4.6MB
- Sample240608-lp49rabf59
- SHA256 9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0
Malware Config
Extracted
-
socks5systemz
-
bhqiqpr.com
-
http://bhqiqpr.com/search/?q=67e28dd83954f37e1207fe177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa45e8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff819c3e69d9d39
-
http://bhqiqpr.com/search/?q=67e28dd83954f37e1207fe177c27d78406abdd88be4b12eab517aa5c96bd86eb90804b815a8bbc896c58e713bc90c91036b5281fc235a925ed3e55d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee929238c4679114
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\9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.exe"C:\Users\Admin\AppData\Local\Temp\9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8USPT.tmp\9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.tmp"C:\Users\Admin\AppData\Local\Temp\is-8USPT.tmp\9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.tmp" /SL5="$40224,4622680,54272,C:\Users\Admin\AppData\Local\Temp\9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.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
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lesserextent.exe
9f7d764b417a11b3849ff54db96413e0ebeccb4d0b4fe002b682b1480c5d20e0.tmp
_iscrypt.dll
memory/752-70-0x0000000000400000-0x0000000000414000-memory.dmp
memory/752-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/752-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2636-59-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/2636-60-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/2636-65-0x0000000000400000-0x000000000047F000-memory.dmp
memory/2636-64-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3376-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3376-71-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3440-72-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-94-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-69-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-75-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-78-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-81-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-84-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-85-0x00000000009E0000-0x0000000000A82000-memory.dmp
memory/3440-88-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-68-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-97-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-100-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-103-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-106-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-109-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-110-0x00000000009E0000-0x0000000000A82000-memory.dmp
memory/3440-111-0x00000000009E0000-0x0000000000A82000-memory.dmp
memory/3440-115-0x0000000000400000-0x00000000006E4000-memory.dmp
memory/3440-118-0x0000000000400000-0x00000000006E4000-memory.dmp