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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
29/02/2024, 00:57
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe
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Size
40KB
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MD5
e72b5bd884e71b41df663304f0e4c5bd
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SHA1
ba017c9c6e67ad137749ab364cd8583f2d2e0518
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SHA256
0dcb6900a6b351ab847ac83dd756fe22e69a6030794517df5e1a6d3c1f8fa4d6
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SHA512
19b59f21f20a0a5d3853b63760e44720853a36a20665a6608b60896b65abb93bd656e96c90d3f21926e42e269a07920c61074c0c021fd6e99f24d7a0c6011112
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SSDEEP
768:bAvJCYOOvbRPDEgXrNekd7l94i3py/yY/m:bAvJCF+RQgJeab4sy/lm
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000300000001e9a0-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation 2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 2816 demka.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 4740 wrote to memory of 2816 4740 2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe 86 PID 4740 wrote to memory of 2816 4740 2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe 86 PID 4740 wrote to memory of 2816 4740 2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-29_e72b5bd884e71b41df663304f0e4c5bd_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740 -
C:\Users\Admin\AppData\Local\Temp\demka.exe"C:\Users\Admin\AppData\Local\Temp\demka.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2816
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD522dc6ccbfb470ea965c740fbc0205438
SHA1f96d73f6ae1622c22a5f843d6966da8b0fddba79
SHA256ac3942a2f1e2067984edcdb157a9f7a12d4fd4ba3ccaaea0e0d690e4086b139b
SHA512a841ffb8ff31bf6e10835515ea4c6b009c9ff62967a38a09e68c11e07dc14f17149803c7c84fa63f09be341822f4d5a0822dca3dab4ad3a225108858199bfb64