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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
27/01/2024, 01:27
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
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Size
47KB
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MD5
772ca6322affb9588f43f2d038e5b2df
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SHA1
f7b6334bb694accdaa3b367cf7812b16222eeb69
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SHA256
46cb9ac341c674d9cf49a395fbdb097327979e325b5781a12a0a2ca3dc63e38d
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SHA512
95d78ac923eb17df630bb1792b6021ba4ed3941faef628600483df7cb25b326d828f63d348b40c7d9bdef087fa87414502fa3584304f8025c18a56bb679e86ab
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SSDEEP
768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WtyU8jL:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUM
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00080000000122c9-11.dat CryptoLocker_rule2 behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00080000000122c9-11.dat UPX behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2344 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2432 2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe -
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 2432 wrote to memory of 2344 2432 2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe 28 PID 2432 wrote to memory of 2344 2432 2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe 28 PID 2432 wrote to memory of 2344 2432 2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe 28 PID 2432 wrote to memory of 2344 2432 2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2344
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD5deea013781b560c2ad84d3a0500e4aa5
SHA123bfc39d6863c3e421a8c8e1730d83b35d38ffc6
SHA2560c653808f9f07295899f40b421e96403c2ee894864509a7e458d035b1799fe95
SHA512c0d1625abab9a07094d9cda580424151091e5bf601c83cc33df845abc89b1bcf645daffa56aadee4d870cc1db8b505aed65c4bfdf7cc48eca4313a4bd7988a13