Analysis
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max time kernel
130s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
14/02/2024, 08:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe
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Size
44KB
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MD5
bac8590b60290f4422422a529c513a0f
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SHA1
40e79e2e11587b0673e8eef18930197b1936ecc4
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SHA256
3ddf136e78cc5ade5a41e8a8293cd4ed9f2f0ee067a91a1e977bc9f6201fb5b0
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SHA512
8fe2391e90ee5050b4f3a12f0fcb85016eb4fabb3266e6dfd113e4d53d657772e733e9015fbf16568f31addb0656a5d18d894d9ffb481d9c33d6f8403c489672
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+YUS57:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+C
Malware Config
Signatures
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Detection of CryptoLocker Variants 3 IoCs
resource yara_rule behavioral2/memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000231fd-13.dat CryptoLocker_rule2 behavioral2/memory/1848-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/1848-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x00070000000231fd-13.dat CryptoLocker_set1 behavioral2/memory/1848-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation 2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2564 asih.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 1848 wrote to memory of 2564 1848 2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe 84 PID 1848 wrote to memory of 2564 1848 2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe 84 PID 1848 wrote to memory of 2564 1848 2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_bac8590b60290f4422422a529c513a0f_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD53fbeaeec2d36e389d6757ec4d8a1c963
SHA1f9d1376b13073c9bfd8b376e754cba3f145f745e
SHA2568531d9fdf883decb87584725de93b97dd901e3a9f4fa0486378a581503c94f7b
SHA5121809c02ad9ac2536f133c2d2253a2c369be0c3b9c00dfbcefce5c4cfb8006546ffe870db6fbef64e02fe4b46a433306aaa075cf1634d5a16309a2ef0098fa0fd