Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
22/02/2024, 17:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe
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Size
41KB
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MD5
7331189f179bf45624e853f42159b67d
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SHA1
bcdc054787df8f2d744fd62943a3e861f4b7e795
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SHA256
ac27aac6351d9d30b38cb6e0c020c8e1c59e145e0c149d2e0fc30f89c698d547
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SHA512
cd7e486c7451a5a3642361388a6d6d0d4ffb4e356cdcf22bf887be536cc4c72e49f1380b744872dfef238997b8f9edb3f479f64b70058c8547da8864683fc39c
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SSDEEP
768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAky:b/pYayGig5HjS3NPAP
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00070000000231da-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation 2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1352 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 1152 wrote to memory of 1352 1152 2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe 89 PID 1152 wrote to memory of 1352 1152 2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe 89 PID 1152 wrote to memory of 1352 1152 2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_7331189f179bf45624e853f42159b67d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
PID:1352
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD58dad3616d8187ad43e69dc75f097ed03
SHA17d9d3bcd9074ecd73eaf19c873a750156b82787b
SHA2567cf7aa7cd7ffae8343a8673fc1e44e53f2a50f6c62456f4f1fba35e0cca3dbba
SHA512543e5b762eb55298764de17ebe93516040e227437a236a504e46a8a8471574d8160afbc1ba7aabd2fbc10fd7cf9a29e2302b59e2aec5cb58c594c969c61659b2