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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08/03/2024, 21:34
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe
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Size
41KB
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MD5
a4d415128d4592504fac6884935855d5
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SHA1
ff2c5e0781920336baeba7fb5b36e4e7695d4226
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SHA256
4879f28d9ea2b14fcb3bf3d0ca2298445c8cc4d20b58d22a3c88848058359c92
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SHA512
c2d98c68618507ab05d2195cf8524b34739151a05757627c9a889695caea58c493327d5080ffed70b4b201964ed97d4580063877f27e422cdf7e7c67c2bc98f3
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SSDEEP
384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzoiM8Nekdvjl9V50i3NbZM+iA:bAvJCYOOvbRPDEgXrNekd7l94i3p+Ar
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002321b-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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation 2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation demka.exe -
Executes dropped EXE 1 IoCs
pid Process 2044 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 3168 wrote to memory of 2044 3168 2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe 89 PID 3168 wrote to memory of 2044 3168 2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe 89 PID 3168 wrote to memory of 2044 3168 2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-08_a4d415128d4592504fac6884935855d5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3168 -
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:2044
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5dbb41b35a40d7c1e0a0c0d18015fed90
SHA183c3f154a7c63c806f44dbfc4657f11ed1875bb1
SHA256fab99b53d46a19e72341a45abd788008a9ade3b44e8df5c10be3a94b9280d47d
SHA5122968fa6153fd46242d9c7301b2d020c794ffe0b461719ea458edd3d9abf99153b894a59994e79d44ef35a4122ac9bb44a77abdef4c2c05cea4375ec7fcdd002d