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Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
17/02/2024, 13:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe
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Size
39KB
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MD5
3d9002021780972b804c35efce55683a
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SHA1
29379643c4dd3583af5e2c8f5f1ad6daaa4c2bfe
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SHA256
56f2fc27d5295cbd5d88efd7f2f5a5e396df8509f9cb48c899da3b9822eaf19a
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SHA512
3114f24bf4c565c763066d104112024de70a663d6bfa28fc93080d2affef653563b015e40987f787a34e77cb7655b5af498c69b1f714fcc969407c3665e633de
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SSDEEP
768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8+Z5C:b/pYayGig5HjS3N+XC
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000d00000002316a-12.dat CryptoLocker_rule2 -
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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1600 retln.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 3608 wrote to memory of 1600 3608 2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe 85 PID 3608 wrote to memory of 1600 3608 2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe 85 PID 3608 wrote to memory of 1600 3608 2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-17_3d9002021780972b804c35efce55683a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3608 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
PID:1600
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD51bc987380e317e1ff2fc6dcda9e5b6f7
SHA12df52e6cc0e73786731e7f2e61788570c3f26aee
SHA256c94ad7333dcc443924e9bf30ccbb3b7156bd550c792237d6124ffc34fb14369d
SHA51289f09a86d6bdab0203087ef68e35d4300af20b212fb4f44442643a21bfbd922736e8209e816373837efd38a3c4ad4e9ad422982d6c0a02706dea79281d83010e