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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14/05/2024, 19:27
Behavioral task
behavioral1
Sample
2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe
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Size
39KB
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MD5
29b057bf6e444cc7d8c1b9841eafbb59
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SHA1
dde0d2fae4b7954ddbf46906d595a9d731c6542c
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SHA256
7430eb714bacfd290f93ad44135bb018c9e29793074fc3d48ad487c730d785bc
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SHA512
169ae145bffab4d4ca41b2d79170a668245f2efec4563ab876adeec15486c15285d16f862840c58d6b1326ef45e6edb31205472bd37cc2fbdebd34fc7624a627
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYjY6E:qDdFJy3QMOtEvwDpjjWMl7TkY6E
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1728-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000012346-11.dat CryptoLocker_rule2 behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1728-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2328-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1728-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000012346-11.dat CryptoLocker_set1 behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1728-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2328-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1728-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d000000012346-11.dat UPX behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1728-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2328-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2328 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1728 2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe -
resource yara_rule behavioral1/memory/1728-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d000000012346-11.dat upx behavioral1/memory/2328-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1728-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2328-27-0x0000000000500000-0x0000000000510000-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 1728 wrote to memory of 2328 1728 2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe 28 PID 1728 wrote to memory of 2328 1728 2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe 28 PID 1728 wrote to memory of 2328 1728 2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe 28 PID 1728 wrote to memory of 2328 1728 2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-14_29b057bf6e444cc7d8c1b9841eafbb59_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1728 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2328
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD5e8fb2948672007a67304e89ff1d47feb
SHA1cdc51d52a067c005e9f89a43fa87c14e6b6cb5ef
SHA2567d71b0a2afbcc5650f8ee347775f0ff910fb0775e2997580a8628a9b41ec97b3
SHA512a9cae7afe6d0a58fddbaf349c04484bb7a37ba1d57812ed36948c4c3fdffb5df8e903f6d88383697c9a81ea47cb00f1a355211060ae8babb63441453fdbfeea6