Analysis
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max time kernel
151s -
max time network
155s -
platform
windows11-21h2_x64 -
resource
win11-20240319-en -
resource tags
arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system -
submitted
24/03/2024, 17:33
Static task
static1
Behavioral task
behavioral1
Sample
6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe
Resource
win11-20240319-en
General
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Target
6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe
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Size
2.2MB
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MD5
1a489ca4bdfa6ea3a6430bf966707379
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SHA1
286d9051f5e278a41d00afb4b2fd852f02061ec9
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SHA256
6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7
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SHA512
6eedc23a6814ebcafe29a3aa6694e85bd904359c8b9d106aec10779bd106e3891e13ed463fbe835a8448b9b1414845d96bee91853f5a29ab635ceec19d590b60
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SSDEEP
49152:32c3kPZbNm6fSEhfqZhgRigMmsbZ0QM0TxI:mysoKUZhqMms+QMmI
Malware Config
Extracted
socks5systemz
http://cshjgaz.net/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a471ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ee939c38
http://cshjgaz.net/search/?q=67e28dd83e58f128495cab1c7c27d78406abdd88be4b12eab517aa5c96bd86ec948648805a8bbc896c58e713bc90c91936b5281fc235a925ed3e07d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee94993bcc699015
Signatures
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Detect Socks5Systemz Payload 5 IoCs
resource yara_rule behavioral2/memory/3684-65-0x0000000000980000-0x0000000000A22000-memory.dmp family_socks5systemz behavioral2/memory/3684-67-0x0000000000980000-0x0000000000A22000-memory.dmp family_socks5systemz behavioral2/memory/3684-77-0x0000000000980000-0x0000000000A22000-memory.dmp family_socks5systemz behavioral2/memory/3684-90-0x0000000000980000-0x0000000000A22000-memory.dmp family_socks5systemz behavioral2/memory/3684-91-0x0000000000980000-0x0000000000A22000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 5200 sitefreeedition.exe 3684 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.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 45.155.250.90 -
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 3260 wrote to memory of 4316 3260 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe 78 PID 3260 wrote to memory of 4316 3260 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe 78 PID 3260 wrote to memory of 4316 3260 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe 78 PID 4316 wrote to memory of 5200 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 79 PID 4316 wrote to memory of 5200 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 79 PID 4316 wrote to memory of 5200 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 79 PID 4316 wrote to memory of 3684 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 80 PID 4316 wrote to memory of 3684 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 80 PID 4316 wrote to memory of 3684 4316 6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp 80
Processes
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C:\Users\Admin\AppData\Local\Temp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe"C:\Users\Admin\AppData\Local\Temp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3260 -
C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp"C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp" /SL5="$7023C,1965922,54272,C:\Users\Admin\AppData\Local\Temp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4316 -
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:5200
-
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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:3684
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.2MB
MD5355fab8714f0d248c3b86fd4397f0299
SHA1eaf7221379ca0791a3a28ef2f0f2369edc5433ba
SHA2563437eea441202018e43dc7fd474f95b4bfdf67416a4de3804b71798d24e7526c
SHA51291b6d7f06441a08925a38878f7902c17a400f192ecdc40efd8d72a7d2b57bdf8c183fc77e66ef1078b4981fd94fc79b6fcc8e53c7932f0122e304a3c12573154
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-FG2F7.tmp\6bd95e17e7cdf399aa6d2405bed57c91112ada2830d9298ec637c07a3aaa4af7.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af