Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
11/06/2024, 02:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe
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Size
65KB
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MD5
7f89d7ea59d2602353283b7514eea070
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SHA1
c47e04786965665c50873244ffb0ffc30a0bff7d
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SHA256
f7391c0513832d108bf10b87ad5af7f1a97c4376c3d36d35b091ef32f09ed881
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SHA512
15ad0f0ee4295e2a28cf2498909ebbc1258573ac21aa2b1c90d68f9071c96c76856a588f34a253292458e400b1e43c6725d2c2f01ec333a09d1c105cef3bcb4e
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGy:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7D
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0008000000022f51-12.dat CryptoLocker_set1 -
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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4596 hurok.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 2276 wrote to memory of 4596 2276 2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe 82 PID 2276 wrote to memory of 4596 2276 2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe 82 PID 2276 wrote to memory of 4596 2276 2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_7f89d7ea59d2602353283b7514eea070_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2276 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
PID:4596
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD576f1cf260feec0b426e1a66edcbb8893
SHA17b299fe20de3e5a0f8eb7e1d99a032aa30db039b
SHA256aec7628c27cdb1eb6ccb7ee8260d67a8d79c72a0f3e3dc4d319554c51531f425
SHA5129c6d9edfec6f0c3b7c71da1319d9c522d1cc0fda8aeead3936b8f36a4e3105188dde282008ccc6b043aed4a41691634cf0de322304ad1b3fdc4c280fd8382ae0