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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
15/10/2024, 03:48
Behavioral task
behavioral1
Sample
2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe
Resource
win7-20240903-en
General
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Target
2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe
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Size
63KB
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MD5
ad88816bf7909042079d32a09d2537fb
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SHA1
215f6ccec693487f9a21f8402e392b667ddaffe5
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SHA256
81eeb786547c3879be6b39e4173b3376f63a8bafba57772fc30d3b947bfbba7f
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SHA512
5cef0f2d6c6d6d49eb40ba5dca46530f832412a0c021eb872d529439c6ba9d6d0bb9199f57490fdf40e8754f74e4cfa50e5e893073234064fcaa50d7ef2ccf63
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SSDEEP
768:P8mnjO6LsoEEeegiZPvEhHSG+gbum/kLyMro2GtOOtEvwDpjKvWxHCbSVaFn0jKG:P8mnK6QFElP6n+gymddpMOtEvwDpjYM1
Malware Config
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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation 2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3468 asih.exe -
resource yara_rule behavioral2/memory/644-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/files/0x000a000000023c07-13.dat upx behavioral2/memory/644-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral2/memory/3468-26-0x0000000000500000-0x000000000050F311-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 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 2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 644 wrote to memory of 3468 644 2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe 86 PID 644 wrote to memory of 3468 644 2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe 86 PID 644 wrote to memory of 3468 644 2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-15_ad88816bf7909042079d32a09d2537fb_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:644 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3468
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD519c519786debaefb53f1f8ea278f140a
SHA13c0c15cb82e8d3bc4aa8ae7d5a75b669f9ac4b8d
SHA256dbe19720b609d2c82bf0ea3b4fbf8cf90ddd69194a7a602b7f1898323d9e33db
SHA5125c00c179532e14f3c2117edf45a12190ad5e7ef042be190e8dc6cafb56f664c10c40691312ea63a8268bf655e48c9b10fc3ea254e4c412ac401724cd0dcf3f6d