Analysis
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max time kernel
134s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
02/06/2024, 04:47
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe
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Size
44KB
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MD5
dfc6c1f251ab76892d070647abc85b72
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SHA1
6c2bea4a02989740436be572eb7bd6deeb71360d
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SHA256
874de09a5b1f1cf56e10cd47edf54d9025cff83874a6a8773e525adae3990a60
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SHA512
30f78cae5f80efe5860ba4ffc0f8726f466dfe6bdb3a9ace7813fc3692bf31d5d14177aab7f9094078fd14599dfc93fb6cd47e25494e3009a869104299706249
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxm:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XT
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000500000002328f-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000500000002328f-12.dat CryptoLocker_set1 -
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 3184 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 184 wrote to memory of 3184 184 2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe 82 PID 184 wrote to memory of 3184 184 2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe 82 PID 184 wrote to memory of 3184 184 2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_dfc6c1f251ab76892d070647abc85b72_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:184 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3184
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
44KB
MD5992706035b4f681282637cd8529d6222
SHA1e5476d480ecd5fb167fdb7ef6c008ebd148f3d1a
SHA256f886c3d23d1b7abbddc5bc3fbd1a133a7729dcfe61b424f9c22a0bda672968bb
SHA512cfe0d0b51834cc4193daeb948e77a9af204ab145eb260089ac9794300ae2ad1f3cec8e7d2c88020658f1e137975ab62fe7915445785bfe765d06726a5d932310