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Analysis
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max time kernel
151s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
17/02/2024, 20:24
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe
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Size
34KB
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MD5
1a5f6a47f25b2a0fd845762f58a2b2c8
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SHA1
b3bb18a2f9c54c88143f71d9b2613678af051777
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SHA256
6df373e963643be68009e0a7f1ebadf7ac59ca3bd67866410400cf84dec3f1c5
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SHA512
b36df6704e103fd893fbf225ab5a725c20b4bc56f34e3819f5b8268de804a3426684c0cf0575b1795b7ddb6270e2a366ad7cbf01f66d46c1bc3dc88cbd825cd3
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SSDEEP
384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lmO:bA74zYcgT/Ekd0ryfjPIunqpeNswm9O
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000600000002312d-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4320 hasfj.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 3716 wrote to memory of 4320 3716 2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe 84 PID 3716 wrote to memory of 4320 3716 2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe 84 PID 3716 wrote to memory of 4320 3716 2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-17_1a5f6a47f25b2a0fd845762f58a2b2c8_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3716 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:4320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34KB
MD55fed854ed3a0ea6292d3c5297382d43a
SHA1c4e71daa272cc0d41aa73099db2922cc21f1ed78
SHA256f721208a5c1d24db4eaf20cceb9eddf97f90ab36328dc03e0986f8faf4273aaa
SHA5128029fd79e390218589e789c56d1b96dde2d8eec63be0d8f752ae4aa45f8390395053692718d94a7414af84aaa7eb1b43101ccc1c4c9906f60e78714b8e7cb15b