Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/06/2024, 01:40
General
- Target 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe
- Size 4.7MB
- Sample240609-b3vx5acc93
- SHA256 99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b
Malware Config
Extracted
-
socks5systemz
-
bpqufyo.com
-
http://bpqufyo.com/search/?q=67e28dd86b5cf27c420ff9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c9e8969b3f
-
http://bpqufyo.com/search/?q=67e28dd86b5cf27c420ff9177c27d78406abdd88be4b12eab517aa5c96bd86e9958249825a8bbc896c58e713bc90c91936b5281fc235a925ed3e00d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929232ca6c9712
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Detects executables packed with VMProtect. 18 IoCs
- 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\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-V29OJ.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp"C:\Users\Admin\AppData\Local\Temp\is-V29OJ.tmp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp" /SL5="$800E0,4667057,54272,C:\Users\Admin\AppData\Local\Temp\99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.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
_iscrypt.dll
99d02207061f8cd1bb41dfc5ce4891f5913bdf35498e043c7d8c2b9ceee2c00b.tmp
memory/1336-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1336-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1892-64-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1892-59-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1892-60-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/1892-63-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-73-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-92-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-116-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-113-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-70-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-109-0x0000000002880000-0x0000000002922000-memory.dmp
memory/4700-76-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-79-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-82-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-87-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-85-0x0000000002880000-0x0000000002922000-memory.dmp
memory/4700-67-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-95-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-98-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-101-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-104-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-107-0x0000000000400000-0x00000000006C5000-memory.dmp
memory/4700-108-0x0000000002880000-0x0000000002922000-memory.dmp
memory/4928-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4928-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4928-68-0x0000000000400000-0x0000000000414000-memory.dmp