Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2024, 04:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe
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Size
45KB
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MD5
a2f261496cffb96025370f5904c30745
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SHA1
d7fa66b5d9b615e82f7148e7bc42ef88780ecb8a
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SHA256
0f0909f4af2d475a6f45dddf4b6a4e622b14e967504729acecab69be3ab26286
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SHA512
882ee76111f2f4d93364670efa3730bdbc97230bb765f4932569b422d39089a24bd4528c6faf71e40617e772a3e5b44a818c6317bb64f960c6d28fc5d4cb0927
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQ7suIlsw92KFXckdF:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakX
Malware Config
Signatures
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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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation 2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2860 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1624 wrote to memory of 2860 1624 2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe 82 PID 1624 wrote to memory of 2860 1624 2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe 82 PID 1624 wrote to memory of 2860 1624 2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-19_a2f261496cffb96025370f5904c30745_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2860
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD58f105a344aa0007e2d398537f71b7051
SHA1f2a12f2f5070e2fd6c0cb1f597edec44f0265e2d
SHA2563e7ee51eb48511be674954028f412e9a8a40b614177d78f1d24e715413b5edef
SHA512696899b136525947fc6091ad6ba153e105426ed5455bc8f394ba62e481cbb3fe234222d6c0773a76528b4619950fb1d478618c9f83ace1daa4abd6bbaab66b6a