Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 18:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe
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Size
38KB
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MD5
55a0b40c22a95eac0dbff8795ed8fc74
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SHA1
53c27d79eea6cf800809376a4f62b0e0d4b7d218
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SHA256
c89ca41e31e7a575c6ffa74026799ee5f1dd64e2a03beae1402f62a7de7f9471
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SHA512
2ab91de710533613f27c830b0b05f232bf60afa313ecb1cec595613ee1186304e1c092f72efe5377a7835157eba55f79a4dce823d9aab0ffae7efc4a5c6f6164
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SSDEEP
768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mhl:bc/y2lLRU6zA6qz
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000b000000015cff-14.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2536 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe 2536 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2864 wrote to memory of 2536 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe 28 PID 2864 wrote to memory of 2536 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe 28 PID 2864 wrote to memory of 2536 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe 28 PID 2864 wrote to memory of 2536 2864 2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_55a0b40c22a95eac0dbff8795ed8fc74_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2864 -
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:2536
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
39KB
MD5ef030987595a2209bec02017a2744e52
SHA143ef072e3ec02bb6781ac2e28cc89db78486983f
SHA256b28a58aca338fbebdf38af4b8968227781e98ebaaadad0f586858e6a1bd1b444
SHA51203a29b5b465470bffc90df171290b3d5f5f4b4e8e204e1eabb4670381b6f8c08153a15a12dbdee850e836ecb55dd0827b4086d3a50b0e839f02bd81e309251df