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Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28/02/2024, 22:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
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Size
46KB
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MD5
b056add30610287691460e958096422e
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SHA1
efe351130ebe79c8eb4c081b8588e5e4499339a1
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SHA256
f25d40e1767be77e4145cb59c1e45634c7e8c81d641c53a975f2635e63245934
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SHA512
422ddcad4e0205fe5511118d40aa12c047d827867e189cb174a76fe2409480e78d2eba398e79ce3426edf28472265c0d614bee4f7dc44c736857e26ca93bc322
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SSDEEP
768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJP5q4X:btB9g/xtCSKfxLIc/C4X
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation gewos.exe Key value queried \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation 2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3580 gewos.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 2780 wrote to memory of 3580 2780 2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe 91 PID 2780 wrote to memory of 3580 2780 2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe 91 PID 2780 wrote to memory of 3580 2780 2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2780 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3580
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD572e9c75a76f42a8be3476094b2e50760
SHA1cca413d6157f71d9fec6a07046e0b6c9217452d2
SHA2565c0e3e79e6ac56913ccdb7e62dada19914e2c1af67edb4ab625f48f397a48c0e
SHA512c3bded32c88da5613dc04832aa3378306c3955d647602d7e5b3b761bf9322c73387cc1a9958d6baf55829fd5e1128ea85654fa13a811f3c290b683b3d2433231