Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2024, 15:08
Behavioral task
behavioral1
Sample
2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe
Resource
win7-20241010-en
General
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Target
2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe
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Size
68KB
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MD5
f15cf2306760758167e2eed8c6116665
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SHA1
8dfc9631080e19609bdf5cd44be7561200992a97
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SHA256
406165c387b84a954694e994f2526d4303a6b616aca410dd6677509aad604a83
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SHA512
af993b1ebb53eb0d8a999c33d655b962f280f4815daa6c37cd2bbc3e5718a9329498e4eb15ac27e1aad3fec586d8506b945793a8c29597b8dedaf47d81d7003c
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeB/5:z6a+CdOOtEvwDpjQz
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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2656 asih.exe -
resource yara_rule behavioral2/memory/4924-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/files/0x000c000000023b07-13.dat upx behavioral2/memory/4924-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2656-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 2024-11-07_f15cf2306760758167e2eed8c6116665_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 4924 wrote to memory of 2656 4924 2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe 83 PID 4924 wrote to memory of 2656 4924 2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe 83 PID 4924 wrote to memory of 2656 4924 2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-07_f15cf2306760758167e2eed8c6116665_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4924 -
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:2656
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD5625473ac45dc8c9b4889bf268029b2cf
SHA10a8259ff8ddad78f54e2facad10631c138e5db6b
SHA2562c1686aecb9739d7f123de276cbe3dcf7f3b398fb845df3e4a4605be8ef3b6d5
SHA512cd8cf418572a4113857585ed6b0d9996e94339e4a6af2646de582ccee06357cc0c40c83279c5a2f1d69755f788d40078e00daeec992b06609aaad656341fbf3e