Analysis
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max time kernel
3s -
max time network
71s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22/02/2024, 16:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe
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Size
37KB
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MD5
32cc11feb7cd542d89b21b817e769018
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SHA1
0fde273628cae526c437eec2fe5bc39baeb0fe04
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SHA256
337e9c176c9d8f0ddb2becea68abc71d7661a538149fb99c4ed719fba74734c4
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SHA512
5ef626c5cf5f31646ef3eba65a691463d28c230f047c4e92e8258dc11754bc62898a219f78cdcb4e1a642680cc633ee37c716a497d5b6f4cb37f77d781038a1a
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SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuVuAv:b/yC4GyNM01GuQMNXw2PSjHPbSud
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000a000000012255-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 3064 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe 3064 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2388 wrote to memory of 3064 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe 28 PID 2388 wrote to memory of 3064 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe 28 PID 2388 wrote to memory of 3064 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe 28 PID 2388 wrote to memory of 3064 2388 2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-22_32cc11feb7cd542d89b21b817e769018_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2388 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:3064
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5840489e6f98e1b200319333c6405b08b
SHA192b511e17397af90fde23394068fd6153ea4448f
SHA25692ce3dea3c4e63663369a09a8da0802f0ec2f21cee05305d9c2774e1c324eeb9
SHA512433c436624de9e171aec212a1066eeb01cc62ea2b7228fb82e63360bb4e388d59612b1fd31f2d60352726d2f42bc53cce68350196415eb3e22d54c50d333dead