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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
10/05/2024, 07:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe
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Size
32KB
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MD5
389f831ea5b4b59918688e6a8e5da593
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SHA1
12c8ba297e458620245f4428414b91831f5334cd
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SHA256
3b1409a1e7bbb1c24a5dde8e62d6b08741f07a7c4e7ee1ea892aed9c823894b1
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SHA512
dd6c7dd923f6e8c4f52b289ce39cd493c0e15b6926d46607db1e4e669cc576af45213541387a965032a2de1cf931339de160404abe84d61ab0103243c1bf3bdc
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGJO:bG74zYcgT/Ekd0ryfjF
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/2724-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0006000000023298-13.dat CryptoLocker_rule2 behavioral2/memory/2724-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/972-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/972-27-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation 2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 972 hasfj.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 2724 wrote to memory of 972 2724 2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe 82 PID 2724 wrote to memory of 972 2724 2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe 82 PID 2724 wrote to memory of 972 2724 2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2724 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:972
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
32KB
MD55ac067e738a555cc199646824e2c7953
SHA1fc16dbae0dd9c7a6d7fb24dade51286de7e77ad5
SHA25651c6b90286089a8c2484f6392a791cfb170327888f14fd38032b9f0a3e6f81fd
SHA51217dc30958447e2d96738a49f72e369a6559097bd7a2c08c751d5995ff09695d556fe25e1a6a8c612d7fc9d8959ee03bbca60ce10cca6b9353d95d16cbe007140