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Analysis
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max time kernel
145s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
19/02/2024, 22:40
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe
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Size
32KB
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MD5
6f931306b5fdea3c0803b4a759793211
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SHA1
e8553773bc2799731e6876ade3613c4ac899cb82
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SHA256
5bb754176a745e7fe20a3402873d8a6d531a329ec72ebc95ceb84fdc4cf3b3fe
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SHA512
716a7e1af71801b3db9c84f8f7ca2f768a731bfbf7bd4a7056cc636d22bff412c315abb02c55a0b19f0d6813d229ded95e8d71deba8ea601617992048d45c3eb
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cuM9gpD:bAvJCYOOvbRPDEgXRcuM9gt
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a00000002312d-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 4304 demka.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 3136 wrote to memory of 4304 3136 2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe 86 PID 3136 wrote to memory of 4304 3136 2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe 86 PID 3136 wrote to memory of 4304 3136 2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_6f931306b5fdea3c0803b4a759793211_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3136 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4304
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
32KB
MD5714773eba46a6127f4d0977129d804f9
SHA1412e5ecb3174e2a6125dce703e91c42ba2a68201
SHA2562e3993e83a4fa59be6e9d3481237aee00df3a87f404ee0e826425a38a00f198f
SHA512ad2a751f3af975ea318b08c303c5a580aec0cf8cb1858dc180cde7094b9bf983f822e2c72fcff3bbe0ba892f7ae8961f9ee82394c5b5a6d675ee066d0340714c