Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
12-06-2024 23:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe
Resource
win10v2004-20240611-en
General
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Target
2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe
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Size
87KB
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MD5
8ff94b48a4f91dba946683bdd207820a
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SHA1
1daacd44ca901004ad5f12fbb5c8bbfe3a554fc8
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SHA256
5787c80fca97918ce6ac9d3b61ea42c6236780912237734814dbe69d290df724
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SHA512
f6165a36c6f46b2f59b922a8d4ad960e4b3a76bd8559f57a823a72571523e12a93d086946637b59e1898cfca17c6640908a5c6aa04c16fc6e67e13f593151f8f
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6a3:V6a+pOtEvwDpjvpj
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022e9f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022e9f-12.dat 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-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation 2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3748 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 3576 wrote to memory of 3748 3576 2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe 83 PID 3576 wrote to memory of 3748 3576 2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe 83 PID 3576 wrote to memory of 3748 3576 2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_8ff94b48a4f91dba946683bdd207820a_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3576 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3748
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
87KB
MD5153e1548f5f45ead6417386fa6c7797c
SHA1c3e0420de0bb31ba06a14548fe08c00f3ddfc63c
SHA256e3467c474d8ba1039a2a25e688e941f0be4221d32939e1366f02090dabf83201
SHA512a3ce1f906ef6053d0f96c0a3b7269923e58d9382078495d6b6462e245bb05f60010e569c80ac0ce2bc260e6e54d6e064872748f0f76823d0836a4617cfe40135