dec252c6180e05840996b8d616cb81f0c8171c581cc9a55c9676915ea42ba328

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 19:29

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General

Target

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
Size

64KB
MD5

516ee3cd4f91242c708adb09c46f24c5
SHA1

efcb528d28edfa52c42209932071389ff560ba7b
SHA256

dec252c6180e05840996b8d616cb81f0c8171c581cc9a55c9676915ea42ba328
SHA512

1875bbf160c4601f61d9cf68c28644196c3c2d2b0f1a9336d95cf2821dfd07ee8e6be2aae3e881cbec9ceb618a5527b3c6c63a8861f42bf6be64cdbe84c2232d
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293WS:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_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

Processes:

hurok.exe

pid process

1416 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1416	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe

description	pid	process	target process
PID 212 wrote to memory of 1416	212	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe
PID 212 wrote to memory of 1416	212	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe
PID 212 wrote to memory of 1416	212	2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_516ee3cd4f91242c708adb09c46f24c5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:212

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:1416

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
64KB

MD5
559d7420625fa8e8f69b637bf38ec646

SHA1
4d49c507648b75fa794c20a15022e89b354433a8

SHA256
c2c048f4e9f6dcfc882502455bf85c9f22d8cf9c7a0cfe13b3068005796b3971

SHA512
167ad58584e75a05a65b3dc5fb8ca9848fd8e62aa37954e4f2a5b81a6ec9c74a0df1e999bced39ff0f59b3ef73e96f74776ec3ca3f6d6f02ab950efd0a47aedc

Download Submit
memory/212-0-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/212-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/212-8-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/1416-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download