Analysis
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max time kernel
144s -
max time network
149s -
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, 16:29
Static task
static1
Behavioral task
behavioral1
Sample
3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe
Resource
win11-20240221-en
General
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Target
3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe
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Size
2.1MB
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MD5
1989f76bb9a2a64280ecc9ca9c3799a5
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SHA1
05964ae89aee8f00a892aeeeee7c2914b9f4ef3f
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SHA256
3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563
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SHA512
fd31d20b4f8cfd939fff13623fd90b2a9320a02695c87e729bbdd7266fc7e976a1542abee6b27af5b20610dedfd9523e1062be0bd261056faddb807d45c6497d
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SSDEEP
49152:321EkZcGqGSuSDG7jt0x+jIryKwXjtAVN593rkmiI:mGkZhuujW0CPwXj4NHiI
Malware Config
Extracted
socks5systemz
http://aivshli.ru/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9e89d9c3d
Signatures
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Detect Socks5Systemz Payload 2 IoCs
resource yara_rule behavioral2/memory/2084-66-0x0000000000930000-0x00000000009D2000-memory.dmp family_socks5systemz behavioral2/memory/2084-76-0x0000000000930000-0x00000000009D2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 416 sitefreeedition.exe 2084 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.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 4236 wrote to memory of 1412 4236 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 80 PID 4236 wrote to memory of 1412 4236 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 80 PID 4236 wrote to memory of 1412 4236 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 80 PID 1412 wrote to memory of 416 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 81 PID 1412 wrote to memory of 416 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 81 PID 1412 wrote to memory of 416 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 81 PID 1412 wrote to memory of 2084 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 82 PID 1412 wrote to memory of 2084 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 82 PID 1412 wrote to memory of 2084 1412 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 82
Processes
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C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4236 -
C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp"C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp" /SL5="$A0238,1792452,54272,C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1412 -
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:416
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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:2084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.1MB
MD5491d95bb817f8588d290bcb50dd0f0e1
SHA15ba366c7e1ec13f104305abd71b7c9f9d02d3cb3
SHA2569a0af8526e70f44a0b3cf1e22cf519487cafce1d55ebd3d93203ebbb8a16229c
SHA512a61c6c4c24e3aa12e27f747d30c760fb3e59afa88a377e26bd53f6eca2db605d705c68bb5f5dd748f24656f1dcb3e00f669811d71cd8dd4726c48a68fc8c5448
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C:\Users\Admin\AppData\Local\Temp\is-IH8NS.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63