Analysis
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max time kernel
152s -
max time network
210s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 11:07
Behavioral task
behavioral1
Sample
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe
Resource
win10v2004-20221111-en
General
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Target
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe
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Size
438KB
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MD5
e1a72ac50663dc79c2b9a1307ebd7fb9
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SHA1
a58bc72414ad4a1e93f4207ddc3ea895f069faf7
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SHA256
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894
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SHA512
e62fc674e5b09304ccf0e0fdab317006ac13e85c62529c1d379113a70ade0d7ad113cc4dcb50ba6342429b4bb729ca2d1816dc9780adffafac3dd364f9088e40
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SSDEEP
12288:lQVvdu+ATmOHEZER9vcndFhtOdJxe1Q3jjN:lQvAbTmOsM987tOR
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer payload 5 IoCs
Processes:
resource yara_rule behavioral2/memory/4828-135-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/4828-137-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/4828-141-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/4828-143-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/4828-144-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exedescription pid process target process PID 1320 set thread context of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 set thread context of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 set thread context of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exepid process 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exepid process 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exedescription pid process Token: SeDebugPrivilege 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exepid process 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exedescription pid process target process PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 4828 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 4828 wrote to memory of 0 4828 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe PID 1320 wrote to memory of 5092 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe takshost.exe PID 1320 wrote to memory of 5092 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe takshost.exe PID 1320 wrote to memory of 5092 1320 1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe takshost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe"C:\Users\Admin\AppData\Local\Temp\1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe"C:\Users\Admin\AppData\Local\Temp\1b1e3084cc098dd5088caa23b8d96219d5d906c1d71a44e0a0a0f28858867894.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\takshost.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\takshost.exe"2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/0-140-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/0-142-0x0000000000400000-0x0000000000453000-memory.dmpFilesize
332KB
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memory/1320-133-0x0000000075420000-0x00000000759D1000-memory.dmpFilesize
5.7MB
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memory/1320-146-0x0000000075420000-0x00000000759D1000-memory.dmpFilesize
5.7MB
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memory/1320-132-0x0000000075420000-0x00000000759D1000-memory.dmpFilesize
5.7MB
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memory/4828-141-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4828-137-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4828-135-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4828-143-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4828-144-0x0000000000400000-0x0000000000442000-memory.dmpFilesize
264KB
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memory/4828-134-0x0000000000000000-mapping.dmp
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memory/5092-145-0x0000000000000000-mapping.dmp
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memory/5092-147-0x0000000075420000-0x00000000759D1000-memory.dmpFilesize
5.7MB
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memory/5092-148-0x0000000075420000-0x00000000759D1000-memory.dmpFilesize
5.7MB