Analysis
- max time kernel
142s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
09/06/2024, 10:43
General
- Target 02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.exe
- Size 4.7MB
- Sample240609-mskvysac38
- SHA256 02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184
Malware Config
Extracted
-
socks5systemz
-
bbksqfn.com
-
http://bbksqfn.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff818c2e69d9233
-
http://bbksqfn.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12eab517aa5c96bd86e9908e4596148ab2865b77f80ebad9c10f7cb63037ed2ab423a4374383ba915d911ec07bb606a0708727e40ea678c45abbe74ffb0e2807e12571c17f3e83fe16c1e89c9832c5679e
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\02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.exe"C:\Users\Admin\AppData\Local\Temp\02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8LJGR.tmp\02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.tmp"C:\Users\Admin\AppData\Local\Temp\is-8LJGR.tmp\02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.tmp" /SL5="$A0054,4651867,54272,C:\Users\Admin\AppData\Local\Temp\02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lesserextent32.exe
02d4d03a881594456f183b16d559b8352383ae7e38d9b8276383c13ae196d184.tmp
_iscrypt.dll
memory/400-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/400-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/400-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1488-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1488-70-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2136-102-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-87-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/2136-68-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-120-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-117-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-71-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-74-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-75-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-78-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-81-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-84-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-66-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-89-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-95-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-98-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-99-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-113-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/2136-105-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-108-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-111-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/2136-112-0x0000000000A10000-0x0000000000AB2000-memory.dmp
memory/3368-59-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/3368-60-0x0000000000400000-0x00000000006B7000-memory.dmp
memory/3368-63-0x0000000000400000-0x00000000006B7000-memory.dmp