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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29/02/2024, 04:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe
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Size
126KB
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MD5
63d967c274b12a6a4eb8ec4fb13ddbe7
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SHA1
87f3007392aeaa056fb508e245123bde0772b0b8
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SHA256
dbd019d2130295ba7b274640fd58e6385f75566f3c695a4aa680e585b249f895
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SHA512
51bcd83703f426065a468e1cec492c89dd7b480bc2ef60fdbbd93da2d001fd2e7ca1687ba507ca1ba4c8c223f83f12d298c8bb9ccbace943c25bd09a03b7152e
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SSDEEP
1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBxL:vCA9OtEvwDpjv
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e5eb-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation 2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 1612 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 228 wrote to memory of 1612 228 2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe 90 PID 228 wrote to memory of 1612 228 2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe 90 PID 228 wrote to memory of 1612 228 2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-29_63d967c274b12a6a4eb8ec4fb13ddbe7_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228 -
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:1612
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
126KB
MD51bfbe3f9417bfef73224b3813e480f48
SHA11374f656e39cecef9f66222026818518c53c6e21
SHA25632df70c14227dabad227092047a2ccc8f0530905dbd5795af0a1f798be1b94c6
SHA512e60d4e8ee8fe8421c265cb502fd9950a4d234c784453b85a3a719bc149750c891d1ef96b343915334e3e485cb1cd3fe10762c25f15b04d8b9d0a8cc272b35837