Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
24/03/2024, 15:58
Static task
static1
Behavioral task
behavioral1
Sample
d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe
Resource
win11-20240221-en
General
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Target
d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe
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Size
2.0MB
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MD5
57f7f1e073a884db20e53a168daad39d
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SHA1
492d6489dd440517435292026a8c6b4aba70a741
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SHA256
d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e
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SHA512
2b3c66e05642dbf4382b693ac331554334b89646d7e90705290935809ef4cd66266d17b8f448be399fb2dfd7528a701a48cfadacb361767742815a9ddacd50a2
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SSDEEP
49152:32ia2PZoSX83mUegJJ7GIuw4xF4qe02iIltGqI:mj8ow8PLUJ4E2isGqI
Malware Config
Extracted
socks5systemz
http://buruggc.com/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9ea9c9c33
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral1/memory/4536-64-0x00000000007F0000-0x0000000000892000-memory.dmp family_socks5systemz behavioral1/memory/4536-69-0x00000000007F0000-0x0000000000892000-memory.dmp family_socks5systemz behavioral1/memory/4536-78-0x00000000007F0000-0x0000000000892000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 3620 sitefreeedition.exe 4536 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.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 91.211.247.248 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2400 wrote to memory of 3392 2400 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe 89 PID 2400 wrote to memory of 3392 2400 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe 89 PID 2400 wrote to memory of 3392 2400 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe 89 PID 3392 wrote to memory of 3620 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 91 PID 3392 wrote to memory of 3620 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 91 PID 3392 wrote to memory of 3620 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 91 PID 3392 wrote to memory of 4536 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 93 PID 3392 wrote to memory of 4536 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 93 PID 3392 wrote to memory of 4536 3392 d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp 93
Processes
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C:\Users\Admin\AppData\Local\Temp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe"C:\Users\Admin\AppData\Local\Temp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2400 -
C:\Users\Admin\AppData\Local\Temp\is-P28PV.tmp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp"C:\Users\Admin\AppData\Local\Temp\is-P28PV.tmp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp" /SL5="$5006C,1764583,54272,C:\Users\Admin\AppData\Local\Temp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3392 -
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:3620
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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:4536
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.0MB
MD51e417394236de4c786e9286a9de071bd
SHA1a58188b5dd42e3e31e98be1eac5338f845d88f20
SHA25683d854c33193232eda4a8f8c06a9b304a57597abecdf07b72153bf1cc7dc9bef
SHA512598160bee4ca7cbe0e50087ca4a7154bf3d852f2de8faccca927c0cf87a5f87bb68d4bcc99cc96fa5da2c5f2397a6ae9b19e3e5386d872e92af6e99cb640c48c
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-P28PV.tmp\d9a7370921b5ed2e87a080854cf2ca8e6d30cfe27cdc1bb8f6eece855f5e812e.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af