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Analysis
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max time kernel
149s -
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
29/05/2024, 04:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe
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Size
41KB
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MD5
e03fc59e8fd7e4d1da5886f17d891171
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SHA1
01e118c8093508b5e79d38a89c76870d62232a0b
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SHA256
8e98ad871509d902dc77ce61aa493f732f6d96d5d0da81dbff681f7fea00c907
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SHA512
bf8ba12747f08a43b069d21b56254adef1e96e09a6e31fa9625250bfea941a11bdea5636436285ef179a27a620abc44b5f5849d4fdb1873516422a01a044769f
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SSDEEP
384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Eym:btB9g/WItCSsAGjX7e9N0hunKLYNm
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000800000002340a-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 2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_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 1496 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 388 wrote to memory of 1496 388 2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe 83 PID 388 wrote to memory of 1496 388 2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe 83 PID 388 wrote to memory of 1496 388 2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_e03fc59e8fd7e4d1da5886f17d891171_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:388 -
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:1496
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5cf741f51e63611b0e42ee07f7c71e85d
SHA150dd2713059e8c0ca1c6ab1f41f6c2c1f5798e72
SHA256b3f0236ac39d1e623a35a23e26a066241b2cae4b897a50fca089ae6028c7b788
SHA5129e4a94ca9aa157c9bcc4b374d96eb910e074b19bff40dd72e9d8f9283a2480ab83fc6d8d6332a20bfc8a391661566aa4881f0388322171ef1989edeebcdface4
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Filesize
185B
MD510ac4628cac99cd9052d5d523784ab01
SHA1e6771f2f5422560c54d30500afadda2443f26c55
SHA256d8caa618c32808b9b07f798bb408d59d97da8a00b324b624e15c51f06e3b1a87
SHA512212e876251fbc93571bac9cb95bba6ea5d94bd2e54522dce12efc559d7c3d67b58768db223334de996bc939f98b329c4e7d3249c68b60e341418bdf0fab7cb13