Analysis
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max time kernel
150s -
max time network
155s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
23/03/2024, 13:19
Static task
static1
Behavioral task
behavioral1
Sample
cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe
Resource
win11-20240221-en
General
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Target
cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe
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Size
2.0MB
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MD5
acb4ff970a6f5a421f388d8db9ef27a5
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SHA1
d66686a615df8a8a6f8f36400c13fdc9f55dbb0c
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SHA256
cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be
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SHA512
2ab6226fc9ce4cea1376692377483642d5a9e83f0e2becf3ca5d81116b3bb8b62263a9c38521de9b79c4921718885a09070ef6e2d21ed2f2cb253a1e1f482bca
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SSDEEP
49152:32SwGJoA887GzJVZ3qTC4SdEdosi9psTJiP9Pe7D:m9A887cJn3oCnEmsisTYc
Malware Config
Extracted
socks5systemz
http://dtwbete.info/search/?q=67e28dd83e0ff228160df91f7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0ef95983b
Signatures
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Detect Socks5Systemz Payload 2 IoCs
resource yara_rule behavioral2/memory/3200-64-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/3200-75-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 900 colorpicker.exe 3200 colorpicker.exe -
Loads dropped DLL 1 IoCs
pid Process 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.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 3284 wrote to memory of 4136 3284 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe 81 PID 3284 wrote to memory of 4136 3284 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe 81 PID 3284 wrote to memory of 4136 3284 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe 81 PID 4136 wrote to memory of 900 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 82 PID 4136 wrote to memory of 900 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 82 PID 4136 wrote to memory of 900 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 82 PID 4136 wrote to memory of 3200 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 83 PID 4136 wrote to memory of 3200 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 83 PID 4136 wrote to memory of 3200 4136 cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp 83
Processes
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C:\Users\Admin\AppData\Local\Temp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe"C:\Users\Admin\AppData\Local\Temp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3284 -
C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp"C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp" /SL5="$1101EE,1756126,54272,C:\Users\Admin\AppData\Local\Temp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4136 -
C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i3⤵
- Executes dropped EXE
PID:900
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C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s3⤵
- Executes dropped EXE
PID:3200
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.0MB
MD5c79648f3750d1cefcdb36833c743d263
SHA1894203940c5346ae015be20e017dee9b409ddaf5
SHA25689af231d1c627b6bede896ef3eb73d8bc48e4a9e37accb71b7f6723a3fe5953b
SHA512052ca6068b18f2d7fcdedcfe01021ce480987c8bf09cda91abb719c9647314c276380563ab1b3fba9cf635499e17eed26c75b7c80bdd59f2ca2c7626c3dd9cf8
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C:\Users\Admin\AppData\Local\Temp\is-4I7QM.tmp\cf2c71d279310105bce28d8ca6f90a42733da306d07e2c13acaa1cc90ff8b8be.tmp
Filesize677KB
MD592f7775908bb12183914bb0753782913
SHA18d1091da36832942d48f2fe9a1a216fdd556b9c4
SHA256a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed
SHA5127e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63