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Analysis
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max time kernel
8s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
09/06/2024, 09:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
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Size
34KB
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MD5
249bf87691896f9eebc54d76ec6f7bd7
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SHA1
fba85151536c76b183e82f22fbe1592c2e775c68
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SHA256
7919884767be58da6c4a2ada15688dac83371f61a7d52663384756cc2c750b3f
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SHA512
71ab68378d13e63fa7ca5b66e0b62f02ab1ec839930b002ab753beff5a3ce82328e71d3868baa665a51dfde240238037f606f87e6e13f21918e0ffd56ac44b37
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgqDxcR:b/yC4GyNM01GuQMNXw2PSjSKkcJecR
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c00000001445e-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2932 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe 2932 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2256 wrote to memory of 2932 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe 28 PID 2256 wrote to memory of 2932 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe 28 PID 2256 wrote to memory of 2932 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe 28 PID 2256 wrote to memory of 2932 2256 2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2256 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2932
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
35KB
MD5d95722a83af5f8c3828e047da961a594
SHA1e1b5c421d554c88018f0f521403e0c3e9724befa
SHA2562eeccfc4c9120df26dec80e2bcef90541f088e0b63c7580298d9b9f4e716fc1a
SHA512282f8590467c67e9747cde1d6bf5de691dbde3bb58fbc1e4d6f946ce53436ead7d86f36a576a535ae7294bbf5564eb8775871448508ce1790db909221592c432