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Analysis
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max time kernel
165s -
max time network
170s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
10/03/2024, 23:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe
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Size
53KB
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MD5
58fb686521e409a57b61fe114a07b31b
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SHA1
24da1df198a652e3ab7c07712a0a9018ba40b305
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SHA256
600f2ab48b3e1e9f7ac8d565d2638548c4137b574d3caa3ad59abf04fa160c29
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SHA512
a288b879deccc36bd58f1754c772cf02b5a9a409ad51c24fc4171a105c62e617d0a04c12e1ee4fad2ead8afff4d54158aac82d083b2dccf8f1e8448d6d8e8e3b
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SSDEEP
768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTbR:bIDOw9a0DwitDZzcTM
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002323f-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation 2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1504 lossy.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 804 wrote to memory of 1504 804 2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe 91 PID 804 wrote to memory of 1504 804 2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe 91 PID 804 wrote to memory of 1504 804 2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-10_58fb686521e409a57b61fe114a07b31b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:804 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:1504
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5104cec8b3e55a7aa0e5b7d2ad3a96ecb
SHA125f81569ac7355d0440d91c81ee33919752e0c90
SHA256f0bc05ff7ba5a99d2f210a4791dbc59b9a12fe34959942b914538f9455a3b104
SHA512226b56aafa4b99db4010b05e7f6961a78cb28acead9ae1d78c0b969f4e65333898a7eb5ce69e90e835f7b8fb2e69bde8193f6caaf962cb5ed6bb1751884dfaff