Analysis
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max time kernel
146s -
max time network
150s -
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, 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://ezbxhre.ua/search/?q=67e28dd86e58a42e450ca94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ee8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe13c9e89d9c3e
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral1/memory/4328-68-0x0000000000760000-0x0000000000802000-memory.dmp family_socks5systemz behavioral1/memory/4328-70-0x0000000000760000-0x0000000000802000-memory.dmp family_socks5systemz behavioral1/memory/4328-79-0x0000000000760000-0x0000000000802000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 2140 sitefreeedition.exe 4328 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 4628 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 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.
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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 4548 wrote to memory of 4628 4548 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 88 PID 4548 wrote to memory of 4628 4548 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 88 PID 4548 wrote to memory of 4628 4548 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe 88 PID 4628 wrote to memory of 2140 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 92 PID 4628 wrote to memory of 2140 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 92 PID 4628 wrote to memory of 2140 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 92 PID 4628 wrote to memory of 4328 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 93 PID 4628 wrote to memory of 4328 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 93 PID 4628 wrote to memory of 4328 4628 3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp 93
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:4548 -
C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp"C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp" /SL5="$A015E,1792452,54272,C:\Users\Admin\AppData\Local\Temp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4628 -
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:2140
-
-
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:4328
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.4MB
MD5e6f4e4b6fd1ecb65941b9600c5cd0bb4
SHA1ebbee8d4bdbecd9ae3d7c6ae5f5e4cff84623f68
SHA2562472db8242fdd5711e134b57f23ee1d5f5d888db50be8ca57bcf48e87e293f42
SHA512c425d8fe2a260474ca156b32488915662c5d367d23e08c0053711d56b4d9dc4e7d6e81d5c4a1b3984119effbbe22095ded61fa903690be4261e5ab602df2609d
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Filesize
128KB
MD5d999ca9b198a445334f47b44c06c27e2
SHA15c085d8766ee88fe67c5d6d8ca8da0cec4dada52
SHA2565e07720d7b30dd8b69b63fef9b6da4b032618611af75432880b83e4169fcc9db
SHA512d6f46ae2e4d2bee2e1b4259b238bc301a02dfa0dc8b94750bd58a0bad859a291754278006c7a5a7f493be3fef199af189f24a825023319dadcc42b8ddda542fb
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Filesize
2.1MB
MD5491d95bb817f8588d290bcb50dd0f0e1
SHA15ba366c7e1ec13f104305abd71b7c9f9d02d3cb3
SHA2569a0af8526e70f44a0b3cf1e22cf519487cafce1d55ebd3d93203ebbb8a16229c
SHA512a61c6c4c24e3aa12e27f747d30c760fb3e59afa88a377e26bd53f6eca2db605d705c68bb5f5dd748f24656f1dcb3e00f669811d71cd8dd4726c48a68fc8c5448
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C:\Users\Admin\AppData\Local\Temp\is-43DS2.tmp\3cb6efeaaeb2c9d6b22ff52bdc661da7e79b6a07011e444ad94c4d8d514f9563.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63