Analysis
-
max time kernel
141s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2024 01:39
Static task
static1
Behavioral task
behavioral1
Sample
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe
Resource
win10v2004-20240508-en
General
-
Target
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe
-
Size
4.7MB
-
MD5
e639f2fc1ae9d9fcf45b9689a17dc74f
-
SHA1
45e340a5fc19cd6e52559d2e32feda26d2395ee7
-
SHA256
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee
-
SHA512
e60d68a4e4ffebc423af47506bc793f54ac39737f065e839a20d935e4556e616060a744e2fceca648a57c63a03ff7cf5020fa247deb6588ee1bdccaa3f71a7fe
-
SSDEEP
98304:mPLOJy7HDtrWP4dAiMJvr2iBCoTyryphCWjk5vQaHjOJ6:OLOw7HD5WgZitphCsLaDOA
Malware Config
Extracted
socks5systemz
bvnbbxo.com
http://bvnbbxo.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa49e8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff819c9e8969b3b
http://bvnbbxo.com/search/?q=67e28dd86b5bf57b435daf497c27d78406abdd88be4b12eab517aa5c96bd86ef9d834b895a8bbc896c58e713bc90c91c36b5281fc235a925ed3e51d6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee929232ca6c9716
Signatures
-
Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/3076-87-0x00000000009D0000-0x0000000000A72000-memory.dmp family_socks5systemz behavioral2/memory/3076-109-0x00000000009D0000-0x0000000000A72000-memory.dmp family_socks5systemz behavioral2/memory/3076-110-0x00000000009D0000-0x0000000000A72000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
-
Detects executables packed with VMProtect. 19 IoCs
Processes:
resource yara_rule behavioral2/memory/2028-64-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-67-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/2028-63-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/2028-60-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-70-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-73-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-74-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-77-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-80-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-83-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-86-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-93-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-96-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-99-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-102-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-105-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-108-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-114-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect behavioral2/memory/3076-117-0x0000000000400000-0x00000000006C5000-memory.dmp INDICATOR_EXE_Packed_VMProtect -
Executes dropped EXE 3 IoCs
Processes:
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmplesserextent32.exelesserextent32.exepid process 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp 2028 lesserextent32.exe 3076 lesserextent32.exe -
Loads dropped DLL 1 IoCs
Processes:
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmppid process 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 141.98.234.31 -
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
Processes:
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmppid process 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmpdescription pid process target process PID 2180 wrote to memory of 3092 2180 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp PID 2180 wrote to memory of 3092 2180 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp PID 2180 wrote to memory of 3092 2180 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp PID 3092 wrote to memory of 2028 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe PID 3092 wrote to memory of 2028 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe PID 3092 wrote to memory of 2028 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe PID 3092 wrote to memory of 3076 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe PID 3092 wrote to memory of 3076 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe PID 3092 wrote to memory of 3076 3092 97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp lesserextent32.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"C:\Users\Admin\AppData\Local\Temp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2180 -
C:\Users\Admin\AppData\Local\Temp\is-8HH27.tmp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp"C:\Users\Admin\AppData\Local\Temp\is-8HH27.tmp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmp" /SL5="$B01CE,4661544,54272,C:\Users\Admin\AppData\Local\Temp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3092 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i3⤵
- Executes dropped EXE
PID:2028 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s3⤵
- Executes dropped EXE
PID:3076
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exeFilesize
2.8MB
MD5a455bade05196fd3966098f2af5316c2
SHA1b1d2c9d415e00044b29b00d8a2040a910dd20d1e
SHA256743854e7a7adc9fa37567d6cae9bfc77ba31969c90411a15729bbc066a5f1d61
SHA512cf14ad19a633fa457668a3be728dac1259f74d956d51971777f998ddb289b024c069b7560b9a746e794ce58e4befa2a43808f199e55a9f4f81e1f2a629da7a06
-
C:\Users\Admin\AppData\Local\Temp\is-5699D.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
C:\Users\Admin\AppData\Local\Temp\is-8HH27.tmp\97f2f45e34af3ae26a7c14c51e111b48c98eef5a2bae1fafd45df5a0c3f46bee.tmpFilesize
680KB
MD5dff4f58a01a8e88e4a2f821ca761d901
SHA1e67e24669220213f895b68c0d662b02b03469b4a
SHA25691b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76
SHA512049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a
-
memory/2028-59-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/2028-64-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/2028-63-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/2028-60-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/2180-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
-
memory/2180-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
-
memory/2180-68-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
-
memory/3076-73-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-93-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-117-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-67-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-114-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-74-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-77-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-80-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-83-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-86-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-87-0x00000000009D0000-0x0000000000A72000-memory.dmpFilesize
648KB
-
memory/3076-70-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-96-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-99-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-102-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-105-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-108-0x0000000000400000-0x00000000006C5000-memory.dmpFilesize
2.8MB
-
memory/3076-109-0x00000000009D0000-0x0000000000A72000-memory.dmpFilesize
648KB
-
memory/3076-110-0x00000000009D0000-0x0000000000A72000-memory.dmpFilesize
648KB
-
memory/3092-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
-
memory/3092-69-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB