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Analysis
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max time kernel
94s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
12/09/2024, 07:55
Static task
static1
Behavioral task
behavioral1
Sample
a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe
Resource
win10v2004-20240802-en
General
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Target
a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe
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Size
280KB
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MD5
cb0c7fbaf692a97c222ff428aac49c56
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SHA1
c760155600a9b403cb5a7084d3191ef0ed28a22a
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SHA256
a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179
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SHA512
bc201aa4b14bd0d0aee3fe32cedf6246ed8554aa43b42dd54aaec10fca3a9e73ee70507b58742bfc855a8c5e5a1fa7640798bfcd794859ebb785edae597dd27e
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SSDEEP
6144:xwXs4RYR0t+Xiz7D7A7+JB8v+wPro/X0:xwVRsSPB8mwPro
Malware Config
Extracted
gcleaner
80.66.75.114
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 9 IoCs
pid pid_target Process procid_target 4656 1360 WerFault.exe 82 928 1360 WerFault.exe 82 2752 1360 WerFault.exe 82 4228 1360 WerFault.exe 82 2028 1360 WerFault.exe 82 4588 1360 WerFault.exe 82 4564 1360 WerFault.exe 82 800 1360 WerFault.exe 82 3528 1360 WerFault.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 3 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 taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe -
Kills process with taskkill 1 IoCs
pid Process 916 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 916 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1360 wrote to memory of 1084 1360 a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe 111 PID 1360 wrote to memory of 1084 1360 a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe 111 PID 1360 wrote to memory of 1084 1360 a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe 111 PID 1084 wrote to memory of 916 1084 cmd.exe 115 PID 1084 wrote to memory of 916 1084 cmd.exe 115 PID 1084 wrote to memory of 916 1084 cmd.exe 115
Processes
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C:\Users\Admin\AppData\Local\Temp\a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe"C:\Users\Admin\AppData\Local\Temp\a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1360 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 7482⤵
- Program crash
PID:4656
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 7562⤵
- Program crash
PID:928
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 7762⤵
- Program crash
PID:2752
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 8202⤵
- Program crash
PID:4228
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 9042⤵
- Program crash
PID:2028
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 9802⤵
- Program crash
PID:4588
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 10162⤵
- Program crash
PID:4564
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 14962⤵
- Program crash
PID:800
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe" & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1084 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "a1b85d8af74805b06c0738f0d891aab6bb9fd75a3d9c87d1b0f23af1463fb179.exe" /f3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:916
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 15522⤵
- Program crash
PID:3528
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1360 -ip 13601⤵PID:1052
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1360 -ip 13601⤵PID:3616
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1360 -ip 13601⤵PID:4660
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 1360 -ip 13601⤵PID:4704
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1360 -ip 13601⤵PID:3304
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1360 -ip 13601⤵PID:4784
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1360 -ip 13601⤵PID:2592
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1360 -ip 13601⤵PID:3700
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1360 -ip 13601⤵PID:1712
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1B
MD5cfcd208495d565ef66e7dff9f98764da
SHA1b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA2565feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
SHA51231bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99