Analysis
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max time kernel
143s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
04/08/2024, 12:07
Static task
static1
Behavioral task
behavioral1
Sample
51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe
Resource
win11-20240802-en
General
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Target
51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe
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Size
3.6MB
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MD5
5933e1399ca4b54fc38b834cbd93d1ce
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SHA1
82c533665cd4744db245b45748cd0a687f5099a3
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SHA256
51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc
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SHA512
8005a1986f853f6f958a1a42b972376fbbf9096825e241a12c1e6262cdfac8987140c8e5c0cd2b5d3c3b1495fd86a8e8872da6325896374f58ec6d97d1b64e8c
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SSDEEP
49152:1vmtVYqtgIuXnwIBa2v3fc90BkZsnExeIocghqBqQOe0+6/y+wjQg/wpkJzPDOtz:NmltuXn7lv3E9ZNgBeYc7Y0XMavetpdv
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral1/memory/4468-77-0x0000000002520000-0x00000000025C2000-memory.dmp family_socks5systemz behavioral1/memory/4468-100-0x0000000002520000-0x00000000025C2000-memory.dmp family_socks5systemz behavioral1/memory/4468-101-0x0000000002520000-0x00000000025C2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 4640 combinerfree32.exe 4468 combinerfree32.exe -
Loads dropped DLL 1 IoCs
pid Process 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.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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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language combinerfree32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language combinerfree32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1900 wrote to memory of 5004 1900 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe 90 PID 1900 wrote to memory of 5004 1900 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe 90 PID 1900 wrote to memory of 5004 1900 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe 90 PID 5004 wrote to memory of 4640 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 94 PID 5004 wrote to memory of 4640 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 94 PID 5004 wrote to memory of 4640 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 94 PID 5004 wrote to memory of 4468 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 95 PID 5004 wrote to memory of 4468 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 95 PID 5004 wrote to memory of 4468 5004 51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp 95
Processes
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C:\Users\Admin\AppData\Local\Temp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe"C:\Users\Admin\AppData\Local\Temp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1900 -
C:\Users\Admin\AppData\Local\Temp\is-M89F4.tmp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp"C:\Users\Admin\AppData\Local\Temp\is-M89F4.tmp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp" /SL5="$70210,3476524,54272,C:\Users\Admin\AppData\Local\Temp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5004 -
C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe"C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4640
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C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe"C:\Users\Admin\AppData\Local\Combiner Free\combinerfree32.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4468
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4336,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=1904 /prefetch:81⤵PID:1268
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.8MB
MD564e42bf693e7188b1fafdbfc477d574e
SHA17dcbb6d56bf4d71bc49360e98b1f10673fd0796d
SHA256efce0b3184e216d49090f962d413f3446c58f2a6fcd328cf8b5c18141f58f5ab
SHA512d8f0968c73ca2f365cb847909dc491483fa1ebc66a42fbbd62cdc3205514776cae794f8b7a39313e6de52a9f9a1d6b4cf0091c855794af317c9484663d4f3934
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-M89F4.tmp\51b2cfa5d0606a22eaea0cc0d63573a689475fbeb5e6736dd8a189b4563b22cc.tmp
Filesize692KB
MD5389209b27cb27183ccb7cc1a1bf4a6f1
SHA14ee1ed088549b034080a2223a3118e5ed09f0e40
SHA2561d47cc604d5d25213daeaec3072a1d35cd167e354acb18a925d1e88c87196654
SHA51217a87b242b0241b6a0fd707eab0f50fe869aad23e26aa64c63963c892b70484e5fa9c5b8ce313106f15ee8798387db5abdbcd1e3060ed4fa84da1c9ce4960a56