Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03/08/2024, 04:08
Static task
static1
Behavioral task
behavioral1
Sample
0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe
Resource
win10v2004-20240802-en
General
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Target
0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe
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Size
3.8MB
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MD5
191e14b3e7e5165989cf70fb472c5ecc
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SHA1
5f6f4415606e5e5225f9af195d85979d3800d152
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SHA256
0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a
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SHA512
0b4a8b3728bbc666fb5077440b4da0cba09b235b6d8fd925ffcdf4b3e842b0aab6a911bee8a701c88ad1d2284f5b9ef5b499250863276b5203cab977c4c8f4b6
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SSDEEP
98304:Np2aqV1SQOv/u1ijP8vaiaD+hKFEutlW0z5uKWoXyl3dK:Ox/PORjEvF2WuSm5ooXyl34
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
resource yara_rule behavioral2/memory/4252-77-0x0000000000AC0000-0x0000000000B62000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 1440 ac3filter32_64.exe 4252 ac3filter32_64.exe -
Loads dropped DLL 1 IoCs
pid Process 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp -
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 152.89.198.214 Destination IP 152.89.198.214 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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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 ac3filter32_64.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac3filter32_64.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4144 wrote to memory of 4468 4144 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe 82 PID 4144 wrote to memory of 4468 4144 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe 82 PID 4144 wrote to memory of 4468 4144 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe 82 PID 4468 wrote to memory of 1440 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 85 PID 4468 wrote to memory of 1440 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 85 PID 4468 wrote to memory of 1440 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 85 PID 4468 wrote to memory of 4252 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 86 PID 4468 wrote to memory of 4252 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 86 PID 4468 wrote to memory of 4252 4468 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp 86
Processes
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C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe"C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4144 -
C:\Users\Admin\AppData\Local\Temp\is-O0EJ3.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp"C:\Users\Admin\AppData\Local\Temp\is-O0EJ3.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp" /SL5="$6023E,3759147,54272,C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.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:4468 -
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1440
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C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4252
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.5MB
MD57a498a1353864e6c8dbb8823947f552d
SHA134474e1a9a42f3957ddff34cc1f5b127d5795eaa
SHA25620c9db025e28991da1d849ab68d1932c6027f6568e32d8fa13d484e4c5236cdf
SHA5124b700290a77c5fcfe2058397310658afcbc16b1a35784f54f1ad52ee667fb68ec15726c70928a00b7afb1bf8d96a184b875899cd736837fc9bf170f15e6596a3
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-O0EJ3.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp
Filesize692KB
MD5849bb5c3439284a175f581ec281ca92e
SHA18bd0737eac1a74de4d62d66911ca7ed9f61cbc0f
SHA25633a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206
SHA512ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625