Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
24-05-2024 01:25
Behavioral task
behavioral1
Sample
2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe
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Size
59KB
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MD5
1cffaf83707e9c6aaa7faca986e2cc19
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SHA1
1c5a3c7bd05c14e1af6c6f52cd7b008c6255cbb5
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SHA256
5b13812e39af08f51b104ab40d901fe4c4bb6d95fd134e373cf3546ab5821b1a
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SHA512
a804e97f0e68a16a062bfd6eaeebfb823457a765f2b5221990cd3d538b3e7e466a2f5c55f11008c6b71f70dd806a96c6ebca6a704211b6692f0c544e76a46081
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPB3I:H6QFElP6n+gou9cvMOtEvwDpjCpVXYY
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1656-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00090000000122be-11.dat CryptoLocker_rule2 behavioral1/memory/1656-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3056-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1656-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x00090000000122be-11.dat CryptoLocker_set1 behavioral1/memory/1656-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3056-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1656-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00090000000122be-11.dat UPX behavioral1/memory/1656-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3056-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3056 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1656 2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe -
resource yara_rule behavioral1/memory/1656-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x00090000000122be-11.dat upx behavioral1/memory/1656-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3056-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3056-25-0x0000000000500000-0x0000000000510000-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 1656 wrote to memory of 3056 1656 2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe 28 PID 1656 wrote to memory of 3056 1656 2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe 28 PID 1656 wrote to memory of 3056 1656 2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe 28 PID 1656 wrote to memory of 3056 1656 2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-24_1cffaf83707e9c6aaa7faca986e2cc19_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1656 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3056
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
59KB
MD50463d046aeae9b213f20a7e4f467c957
SHA16e5ad0221bba0909a5c13d7c04a11e5948ddc9be
SHA256ce793f5f889a8e8628fae225ea6888eb11a4b00847ba5c06a55fad69fe416b1f
SHA5124a6c058a913e599d0d9c48c31946921a2307d3b90b9379d8ee2f167121f9d338a3163413b667ce0d34c23a0e2852255f194001611ada7023e86210446a17a937