Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2024 04:20
Behavioral task
behavioral1
Sample
2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe
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Size
40KB
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MD5
edb57535181a18d2d1ee13429964c9f1
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SHA1
d8df49732c10cfbc304e573ac1e71d6b8ae77bb9
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SHA256
97742eeab2c0edfe401c71ee10acfc4edc4eba231aa959a61b67e647666b43de
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SHA512
39dd7b8d1a21c916fe903654c2cc91289c9d421a9894b5d1780143a7de4cbffc0617840ec8e299944ada203efe02990055301d9332b19dc5b23cacb9d7808501
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9hk:qDdFJy3QMOtEvwDpjjWMl7Td
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/1476-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a0000000233c0-13.dat CryptoLocker_rule2 behavioral2/memory/2664-19-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1476-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2664-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/1476-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000a0000000233c0-13.dat CryptoLocker_set1 behavioral2/memory/2664-19-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/1476-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2664-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/1476-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x000a0000000233c0-13.dat UPX behavioral2/memory/2664-19-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/1476-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2664-28-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2664 asih.exe -
resource yara_rule behavioral2/memory/1476-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000a0000000233c0-13.dat upx behavioral2/memory/2664-19-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/1476-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2664-28-0x0000000000500000-0x0000000000510000-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 3 IoCs
description pid Process procid_target PID 1476 wrote to memory of 2664 1476 2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe 82 PID 1476 wrote to memory of 2664 1476 2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe 82 PID 1476 wrote to memory of 2664 1476 2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2664
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD503c12bb7d9b6051c473c87a96aecb5bd
SHA17aba9aa0e3e077c8f001f718f0245ee343cde3a4
SHA256255c72a07e942a9dadc06376713180c320286c5931ad6f277249441b75406626
SHA512edb82edc8c912abac54a1b8cf2fc2396bc45473a49aa3715f9397c4eba4cac6f663677e47ef3e25bfa650e93e4e0b36028e129e1dc6b84b692f253c35f038700