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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
18/02/2024, 08:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe
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Size
32KB
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MD5
8a33a713ef97774a54a367aa6e662650
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SHA1
751502c495215762ec251fff98261107c10d09bc
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SHA256
497342c3405f476b49a63d8466ae7dcafe8bb316d36d963566bf6cdefeed1030
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SHA512
04cf2e059710d12b63284dc7136ae3ca736be4bee11a848125a8f3d0d6560e88282a1aaa9ebef693c3c52a428e106ace52e07d829243097031b51b65034b9cd9
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SSDEEP
384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtx:b7o/2n1TCraU6GD1a4Xt9bRwJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c000000012247-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2664 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_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 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe 2664 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1736 wrote to memory of 2664 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe 28 PID 1736 wrote to memory of 2664 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe 28 PID 1736 wrote to memory of 2664 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe 28 PID 1736 wrote to memory of 2664 1736 2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_8a33a713ef97774a54a367aa6e662650_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2664
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
32KB
MD5b45bb0b9befbfa439a25ba1a109ea1de
SHA12154b5ffa6d2bbc105bd44ee32528cf25dd35bfc
SHA256fe7204b95f0575b1b329f65a73a85359d06f8c6bf1495afa09c75e7643e682a8
SHA512a9173b2c45977767117196da2a3681d8f08612ae884db159742538883236f697b4421bb82b901db2515c33cea5f3ecb62e4a04fce7d20926aab8d333f998a443