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Analysis
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max time kernel
131s -
max time network
132s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
26/05/2024, 02:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
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Size
41KB
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MD5
f13461eca4f8ab8d57209349123049f1
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SHA1
d1d9c873e904bde081f73f41fa76ff6a2afdf6b0
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SHA256
9e80458fb07a6188db29019dbf2de00e8aed4f8db50916d5a5c027448a1d5f1b
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SHA512
ab750ab4e1c1bf8a703500b36ff0a49390636fa86ec68364a7c22ddd5154f348ae7635f856acaabd684d6efe7633bb30871cd9b910e1c806e2ae9e298b75ed02
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SSDEEP
384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/EZCz:btB9g/WItCSsAGjX7e9N0hunKLYW+
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00090000000233f6-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 440 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 4596 wrote to memory of 440 4596 2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe 83 PID 4596 wrote to memory of 440 4596 2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe 83 PID 4596 wrote to memory of 440 4596 2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4596 -
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:440
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD57161631132d7fe20a674abf6730f2091
SHA1b04e02f250ad3757de529174e8d640c241a3839b
SHA25688126198d0fe0981753be47d88ed8af3b4d0b168a7d5ebca5ae2ed3b7be112e7
SHA5123d0f8327e152f4b90049fb1998beaa1151e53fde950d79db3c160cf562598017a4dce2d145e0e9a8ede75ef0948334318b1636572e82e3b8be640295c24ddeb4
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Filesize
185B
MD536066ea0dda8904891cb28ad064f6f5e
SHA1f554e604f7782e108eb073c4f7bf11c6b79e2182
SHA256dbb4956e40827acd0e2816fb0556d46311aea7566b8040b1d6ad287679cd964e
SHA512e342c3007a80dce5798233e295e7b9f3bcfb393952dfea3d60501a86ff902d45645b665251f53fb4c527c38464b09393260ec82bec1ec8b76fbc04447f34038e