4c3183ed20ee80bdf5897e9d7893e6ac5b8ebb0680792c331d065b1aabc39b7b

Analysis

max time kernel
88s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 05:38

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General

Target

2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe
Size

44KB
MD5

9ad592fa96df375e90df765b12adab0f
SHA1

2258291c2d846377781675524cebff7cb6d3df4d
SHA256

4c3183ed20ee80bdf5897e9d7893e6ac5b8ebb0680792c331d065b1aabc39b7b
SHA512

9a824fc9b4627f06ddbebe0df5d1df9db945f54a268e07f6606abe08d4326c6895b376c60a66c68b37bc666881e07467f771f8d9408565b6b8998beec510307a
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxF:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000002311e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d00000002311e-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	2024-04-06_9ad592fa96df375e90df765b12adab0f_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
4620	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 3724 wrote to memory of 4620	3724	2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe	85
PID 3724 wrote to memory of 4620	3724	2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe	85
PID 3724 wrote to memory of 4620	3724	2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_9ad592fa96df375e90df765b12adab0f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3724
- 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:4620

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
44KB

MD5
5bda5df612adef500e9661808962c1d4

SHA1
797f9db6ce592489461f8d156ca15cba31feafa5

SHA256
bf2cf0fb516f3d0c73743208a4cdc5f499176b5a9fe1186948d894bfa13f4cc7

SHA512
f7cd657b3a81914d1c93a0d5e29bc19f83c319a11b0a9eb3820b5c174a05aaf66b47fee65c5c3f28bbe298309a1d39a4d4ceea10f5a0d3b3a862abc22fb6bf10

Download Submit
memory/3724-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3724-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3724-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4620-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download