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Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24/04/2024, 01:36
Behavioral task
behavioral1
Sample
2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe
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Size
38KB
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MD5
edd9166edbf6fbc22b15afc7f9b8bf90
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SHA1
e36cb39d54bb3b6cd83351c4affba09fd2210ee5
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SHA256
4105ca482dae3c6fba5eb44df4aec3795de037b52ba80f0973dd01c85b3cb88f
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SHA512
5943cd0696b6027166daabdd4f4743405f5863fc2d4e7b9a145aec54e9d1b9cba25152a07e72532361f46d56f58441c2fcc5a6014bad7cc3a39e16a9c3dea31d
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYR:qDdFJy3QMOtEvwDpjjWMl7T0
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000122cd-11.dat CryptoLocker_rule2 behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x00080000000122cd-11.dat CryptoLocker_set1 behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00080000000122cd-11.dat UPX behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2444 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2780 2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe -
resource yara_rule behavioral1/memory/2780-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x00080000000122cd-11.dat upx behavioral1/memory/2780-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2444-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2444-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2780 wrote to memory of 2444 2780 2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe 28 PID 2780 wrote to memory of 2444 2780 2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe 28 PID 2780 wrote to memory of 2444 2780 2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe 28 PID 2780 wrote to memory of 2444 2780 2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-24_edd9166edbf6fbc22b15afc7f9b8bf90_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2780 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2444
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD57cde37603622f392ac205c004cae4f0c
SHA17f3d3dbf4e6a44e969db39a2d086e7d2eb6fdd52
SHA256b3e323839fe7e640be1720479e5da387be8fe029de198ca64d53a8aef7e4a60d
SHA5128d868828618087a2c3cb212c7f6e02d8f66c20a6acc8208d05ac4deff028cd283bf0e8410995d48fc0d95d36cb22ba0d3b5027972e0037870bcf6f734de18077