Analysis
-
max time kernel
148s -
max time network
154s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
24/03/2024, 15:24
Static task
static1
Behavioral task
behavioral1
Sample
28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe
Resource
win11-20240221-en
General
-
Target
28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe
-
Size
2.0MB
-
MD5
b24a1a31cb5a2a81424b17d988145710
-
SHA1
11794b1948f3efaf5074e3bf22301440003a33c9
-
SHA256
28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140
-
SHA512
071539dc8fd14c89fe010f272277b47f95a855357983556aad100c77fd14170c1333a27f3b02fddb9689cf64d99ce05ff98cc2e5189d3311274924a9e5fc7c72
-
SSDEEP
49152:3247n6RRtNoWh/PKGET6RAS3abv8dW6jI:m6n6RRtSWlK9uRf3GUdnI
Malware Config
Extracted
socks5systemz
http://bfiscke.com/search/?q=67e28dd83f08f2204807f9497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9ec9c9c33
Signatures
-
Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/2408-68-0x00000000009A0000-0x0000000000A42000-memory.dmp family_socks5systemz behavioral2/memory/2408-67-0x00000000009A0000-0x0000000000A42000-memory.dmp family_socks5systemz behavioral2/memory/2408-78-0x00000000009A0000-0x0000000000A42000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
-
Executes dropped EXE 3 IoCs
pid Process 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 2956 sitefreeedition.exe 2408 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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 WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2576 wrote to memory of 4472 2576 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe 79 PID 2576 wrote to memory of 4472 2576 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe 79 PID 2576 wrote to memory of 4472 2576 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe 79 PID 4472 wrote to memory of 2956 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 81 PID 4472 wrote to memory of 2956 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 81 PID 4472 wrote to memory of 2956 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 81 PID 4472 wrote to memory of 2408 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 82 PID 4472 wrote to memory of 2408 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 82 PID 4472 wrote to memory of 2408 4472 28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe"C:\Users\Admin\AppData\Local\Temp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2576 -
C:\Users\Admin\AppData\Local\Temp\is-3OJPT.tmp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp"C:\Users\Admin\AppData\Local\Temp\is-3OJPT.tmp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp" /SL5="$9006A,1771305,54272,C:\Users\Admin\AppData\Local\Temp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4472 -
C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i3⤵
- Executes dropped EXE
PID:2956
-
-
C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s3⤵
- Executes dropped EXE
PID:2408
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
2.0MB
MD59aa9c990c1d39b7d5a1bbfac8a1f9ea3
SHA1217b23164048a1f7829eb22848714ad882aa30f2
SHA256cae9f259144d1371674648a8b6606b542148e9a5cc500f878a02ef0fa59b8a3e
SHA51228a98115017732b326a09464f8ff2f5daf397bc15a577a7d9b9d90c5ba282bc14425afda8f5fd09efe4ce6851769471f1c9c84f04d2d2095619bb24f8c2e4458
-
C:\Users\Admin\AppData\Local\Temp\is-3OJPT.tmp\28a8077df899c3c22d4b57ee17971177350fd6b2ccf70868421fd56e1bab1140.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63