Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14/03/2024, 20:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe
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Size
40KB
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MD5
601ae5e578b2e52febb898ffe1cc94c3
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SHA1
13ade15c74fc1f4bee2abc104f9d7edaba05a786
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SHA256
91144597fac810a2a07fbb9a9ae9f28985d9cab7e4d1dd63756fb6fe80977d05
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SHA512
3a5184c7634ff702d18e08acdd2c027c6cf134fb9eeb2de4bff1015a4297bafdde9c5f870402722c7ed370948e7e8f0f55cb0491d330feb5d588e6da743853eb
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxujsFwY:b/yC4GyNM01GuQMNXw2PSjHPbSuYlaJY
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a000000023202-11.dat CryptoLocker_rule2 -
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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation 2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3952 retln.exe -
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 4476 wrote to memory of 3952 4476 2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe 91 PID 4476 wrote to memory of 3952 4476 2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe 91 PID 4476 wrote to memory of 3952 4476 2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-14_601ae5e578b2e52febb898ffe1cc94c3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4476 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
PID:3952
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD540a7cf45647eab8958fe72bbd6cede81
SHA19014e5b287510cde2839a44148b1f6adba48641f
SHA2568504ff3bf2269fc95f2c11e561f090f2c33401e34ab6c64e31637aeaecac933c
SHA512317ddb7358dae7c6ae932f1fa90d70f75061ae5131c6e74f9e35f787e9928db3b4bfc7ca2127445a764b73632e12bc8df90df0b3afdc45080167f1416f630962