b6e321f47f0ed6be795a98093bc4bb2d1b431337b17c7df094489cf7d81a1bbc

Analysis

max time kernel
119s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2024, 09:49

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General

Target

2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
Size

42KB
MD5

f5befe0866315ca590c8f065a5278dfb
SHA1

688a2fa6afdc698351dd64733ad296523668259e
SHA256

b6e321f47f0ed6be795a98093bc4bb2d1b431337b17c7df094489cf7d81a1bbc
SHA512

10f5ea640dfed6a0ed1c309f3ea3b4371c5722e1fb5f55a30be797a86113fc5e3f6981aea74aa6cb2e348c3aa708bb98c8813403af498edaf4be77a62445ec20
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxf:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023157-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023157-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
804	hurok.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 804	5068	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	85
PID 5068 wrote to memory of 804	5068	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	85
PID 5068 wrote to memory of 804	5068	2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_f5befe0866315ca590c8f065a5278dfb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5068
- 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:804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
42KB

MD5
c6135dcf790a555371d0e8a7f6edc5c6

SHA1
f84aa94a7a2bfb8e2f35615dbf4a403a8d5cbf20

SHA256
c474c6437fb4226884a19e4f86185d90a9ba96fe87141641566ec09af1761d81

SHA512
34f5359966116f52ee9bfa61481b9d17b5dad6a93b6cf1e3b95995d133cc44c7435bc39af1cab8501af7c9627d9ddc00f31596b477be0de449116bb81468b7ea

Download Submit
memory/804-20-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/5068-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5068-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/5068-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download