Analysis
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max time kernel
145s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
03/02/2024, 18:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe
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Size
54KB
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MD5
ab361da61efcba3ad11a0d59f2d098a1
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SHA1
807532e41a738260d8588135f6d23221459c5eef
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SHA256
671e12731b69e6ef69683d7c2f384a63d97e1fd29ffea205a9a3cf8244eefeb9
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SHA512
e556337a4edfc1bd3eb81ba77ba1cf398731a9825359783a88a698777a0b868f19f72fc17f4fbd9889fb2287a12e790faa7ef5d59a55b952d25b73bdcd6d83a6
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SSDEEP
768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCW1nw71TkhsiPn1YFv0itq3F:vj+jsMQMOtEvwDpj5HH1nw73KOFsiM3F
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000f000000023151-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000f000000023151-12.dat CryptoLocker_set1 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation 2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 1696 misid.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 848 wrote to memory of 1696 848 2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe 85 PID 848 wrote to memory of 1696 848 2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe 85 PID 848 wrote to memory of 1696 848 2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-03_ab361da61efcba3ad11a0d59f2d098a1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1696
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD5e35e7f5689ed485bee37c27781fb3e6e
SHA16def550f4dd7a07915e52f12ffeb31954963ad2f
SHA256ae518abc3f48b813d961bd014005e7cebc3496ee91b729bb394969139710c4af
SHA512580a87f94e518069586a00ef93001b548fa7b44653fefabf90089e1302e1af32f4b37e9089939e87549c9b159e74d391ddd3cbe54d46d12dd3f4a26a26744286