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Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 18:02
Behavioral task
behavioral1
Sample
2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe
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Size
59KB
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MD5
5120f104b3f69b5866a376e61bd37233
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SHA1
7d3f2c442edd0a455c9d726c96f98821be1a6f68
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SHA256
f2d913398fe248a5acab694fe282b1e572aa82e038557ee8fff0aa3b433f56aa
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SHA512
3462d3cd0710080fe1348ec4758b53490cade34392c100e0862710be782a537708b6d7a0943f00d9bfd1075974483d861fcc96953939c561be66a7efc4afaabc
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj9:H6QFElP6n+gou9cvMOtEvwDpjCpVXA
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000014909-11.dat CryptoLocker_rule2 behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000014909-11.dat CryptoLocker_set1 behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d000000014909-11.dat UPX behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2884 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1688 2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe -
resource yara_rule behavioral1/memory/1688-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d000000014909-11.dat upx behavioral1/memory/1688-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2884-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2884-26-0x0000000000500000-0x0000000000510000-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 1688 wrote to memory of 2884 1688 2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe 28 PID 1688 wrote to memory of 2884 1688 2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe 28 PID 1688 wrote to memory of 2884 1688 2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe 28 PID 1688 wrote to memory of 2884 1688 2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5120f104b3f69b5866a376e61bd37233_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1688 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2884
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD5621fe82ca97824072378c29a9367b826
SHA1b33dbca3060274ce920b46941855fbb295cf139c
SHA256486056dcdf2cf910f4894bdd9025e43397a069cc02a36373219cfa3724ed031a
SHA51228b9929c3db724d86e4ae967cddf877797fb2c9e829b7b86dcfeb20e922430cbd41a098b34234bc751c6538bf228931f1d4e6c15b460a35bd9fed11c76443925