Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
01/06/2024, 20:04
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe
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Size
37KB
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MD5
6ca26d69ffe24566a19c28869500b828
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SHA1
9d45579b8edebc6074f85f89870bc503736bd585
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SHA256
2dbd3499a95db5520d651f827c94496c89382759cf910c69ec27cc320710d391
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SHA512
338291199380940056088556d56f35afb54ee3618305abbd447038514590b53170909ea50c9915bd51e3a2aada074d94f08dd2aa1f4f904a179aa2f3ffe0c5ef
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SSDEEP
384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyc0:btB9g/WItCSsAGjX7e9N0hunRvc0
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023288-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 5076 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 3216 wrote to memory of 5076 3216 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe 81 PID 3216 wrote to memory of 5076 3216 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe 81 PID 3216 wrote to memory of 5076 3216 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3216 -
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:5076
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD5c3764873bd8a61ddfac7b2567dc805a9
SHA1223ef2d4277a9c572c5e09da0f91bd8182e9f755
SHA256261ed4c7e64d90816e079122e2e8e891cb75fc513da9c226e94d0f171779c9eb
SHA512616b0a624773a94d1019783ea4d4046c4473d2188792829c889d308b1e195823b02937c639eb570078f69ddd04c5a9ca73a5723ce0886cd0ad30d43fcf2b4ca4
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Filesize
185B
MD5562001dc7e0704b16170f68bed259c02
SHA10e98c6e294c299608d650314640ef8efe0c9f212
SHA2564ebbb50c4055d9838d2c43058bbb0cff8ebd7eed465cefe4b9e2a639424759bc
SHA51248c2aa64eb8f0805497bff4b7dffe34546a62cdb691329cc6e3c69bf6169e46c80405d0918776c755923a007f1e5224290788672de972fe567414c730252760a