Analysis
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max time kernel
146s -
max time network
133s -
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, 13:50
Static task
static1
Behavioral task
behavioral1
Sample
ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe
Resource
win11-20240221-en
General
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Target
ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe
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Size
2.0MB
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MD5
4fbc079afc0e59a9b99ef86981fa5326
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SHA1
06349881fcb8b34be0f79b849cf0f1289ac4d588
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SHA256
ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1
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SHA512
b9445eddab7a234504fa73cb410d9103dea4534b1e16d078fde9b11cfca45c8adb073825799ef9b53b2d1e506d634ec251cbe5f26cf7cace5168287bb3a9bcc1
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SSDEEP
49152:32TL+/Bjpvz7OAUZ8Dx3vEEDGBPAqfqQOmQBTTTjNIH:mTLYywV/EESFA2KBvCH
Malware Config
Extracted
socks5systemz
http://ddjurzz.info/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c0ee9c983d
Signatures
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Detect Socks5Systemz Payload 2 IoCs
resource yara_rule behavioral2/memory/4464-68-0x0000000000A30000-0x0000000000AD2000-memory.dmp family_socks5systemz behavioral2/memory/4464-78-0x0000000000A30000-0x0000000000AD2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 4496 colorpicker.exe 4464 colorpicker.exe -
Loads dropped DLL 1 IoCs
pid Process 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.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 1196 wrote to memory of 4920 1196 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe 79 PID 1196 wrote to memory of 4920 1196 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe 79 PID 1196 wrote to memory of 4920 1196 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe 79 PID 4920 wrote to memory of 4496 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 81 PID 4920 wrote to memory of 4496 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 81 PID 4920 wrote to memory of 4496 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 81 PID 4920 wrote to memory of 4464 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 82 PID 4920 wrote to memory of 4464 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 82 PID 4920 wrote to memory of 4464 4920 ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp 82
Processes
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C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp"C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp" /SL5="$70058,1781689,54272,C:\Users\Admin\AppData\Local\Temp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i3⤵
- Executes dropped EXE
PID:4496
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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:4464
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.1MB
MD5a8f9420959ddb2ee550f7e21644357a7
SHA14e429af917fe5e50b210c1aaa12e62a3e0c51d8f
SHA256c57954dfad4f4bc99ac2fdba834e684831d0e8f1e8fb2ccc14463090739b09e7
SHA512d2890847e9f98a6f8a2ff1126c9c0917b17caa1c9a9d1bf59280588f4c9b1c09b92e1520c50d0eb8721bb6fe5ef235c56ea2c2bd9640423aa884d376f082d928
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-U3P1T.tmp\ac9c83755d42aa96f1654229b594fa401113a79222b9deef71a1d4f18a5e8fc1.tmp
Filesize677KB
MD5d394fc26de69f06950dc1c71959b0261
SHA17c9448fc3582f19763eaa8e3c5383b7873aee017
SHA256405e474735b776fc09dc71d3a5b44c50b9e2c745cdf7e79eb89dc791866ffe2a
SHA51263ef7265aac27715f5b799b588955dd5df3f49ecd0042fba69d0effe7dfe24d6777079677a809e817e4e8243a2185ca9c3a8022c9247bb2a070c213f06d7bc10