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Analysis
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max time kernel
150s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
26/01/2024, 16:23
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe
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Size
41KB
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MD5
17afd1ee2b81165502ead44310fdd5e0
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SHA1
395edbe186524e8d56cc210b13be27f0151f705c
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SHA256
85965502480f30e30bd3249728b4ccb68bded4545cb3dc404a48ac4dda00b157
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SHA512
16da1a312664d3ef14086ac3dd444cf3316db064e7ea128c66e94de5017f74908f72f2565da1a3f8ce1ebc0d095a9ea442644b8ee788c78e4456aa6c43871301
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kx1:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000b000000012252-10.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral1/files/0x000b000000012252-10.dat CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2696 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_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 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe 2696 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2908 wrote to memory of 2696 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe 28 PID 2908 wrote to memory of 2696 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe 28 PID 2908 wrote to memory of 2696 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe 28 PID 2908 wrote to memory of 2696 2908 2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-26_17afd1ee2b81165502ead44310fdd5e0_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2696
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5bab68ca0dde996dedfdf4a39cc68a00a
SHA143fd6a712cd9bc46b4502f36793a60303f75d912
SHA256ff3feb6305a719862d8991c4b168cdc639ed24e0bcebd2153d96c87c4bab5eb5
SHA5124aba399066357711dc9be1d7b1ae42baf3f6e10af5dfaed08a5b1a6b22c1d38a444cf6d3b3623a7187190f64f4fc2523295627437c68bd38f8a1aa60c76676dc