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Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
06/03/2024, 05:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
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Size
39KB
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MD5
3a22ffd192efe0cb5e9a604057354d92
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SHA1
57e76774aec6a9b135e0962af20d05d6f8153361
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SHA256
05ddfe9cf686a3b55f39a16c16c59a61dc129b5e7ac1fe51fe80483bf9493110
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SHA512
9f46b3119ad74037848efe510a765623b991633768f1df89b22101bdfd1307db0f5ca87a184c4aa2ecc140e72b1cf109edb75f4bf0766af2705bdd20cf074e39
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SSDEEP
768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vH:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLL
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001ebc7-13.dat CryptoLocker_rule2 behavioral2/memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2112-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000700000001ebc7-13.dat CryptoLocker_set1 behavioral2/memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/2112-18-0x0000000000500000-0x000000000050B000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation 2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3500 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 2112 wrote to memory of 3500 2112 2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe 89 PID 2112 wrote to memory of 3500 2112 2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe 89 PID 2112 wrote to memory of 3500 2112 2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3500
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD5f4989384ce667e99d2ed3c081118cfe1
SHA1ef9f5c3d86f92fac7ef6adc0656573bb911d59ad
SHA2569bd39ee9d3626ee612579d93b5c40de8ca6c469519a7041d592021afafb83a28
SHA5122af5d9f805ac7cda0dafe76c8aaea44883b62f6ce4c72c93496b8a747b6aaa9cb590ce492e41582ed02b3eebcfd665f2445b8cb13c118ea642dd13cc9dfdf9ab