7f8dab3d4fd41b6846aceb02ccd080ef28e1a44c5002f4f676d0151b2b19502a

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-03-2024 14:37

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General

Target

2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
Size

42KB
MD5

61d953abbee258995323a867a8e4e607
SHA1

217848b9b20f2034e937ae57d1ff6a826ad809cd
SHA256

7f8dab3d4fd41b6846aceb02ccd080ef28e1a44c5002f4f676d0151b2b19502a
SHA512

b2bd271c3b8224b7aabf044fa51a9d7772c2890ece88ee972d4d3dad022bf31ec8357bc4635260f5c255e6617b9c2c0eb9ac2b12627498db93c5632bf952dfbc
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxU:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022745-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4980	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 4744 wrote to memory of 4980	4744	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	89
PID 4744 wrote to memory of 4980	4744	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	89
PID 4744 wrote to memory of 4980	4744	2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_61d953abbee258995323a867a8e4e607_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4744
- 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:4980

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
c8223928f4e3e5b7a0c8f8465baf60a8

SHA1
76cc86835218f3067348a98ade91d209e8fcb3d1

SHA256
5f62a6d034cfa3beed05ce6723629841c02b97c3511ff7c610379f671a5cc7d1

SHA512
7937552ee94af92f270365903a555c29781b865bb30d30d367291ff28b8d7a1f3f6556d8abf87c2326fb2afa01bb24c270131cc1abbd8b4898bd61f37fb8c6c8

Download Submit
memory/4744-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4744-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4744-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4980-22-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download