a6f3a07018e6fc17a08dded59c71cd882bc44d5663ef86a77ddc7040e8425d52

Analysis

max time kernel
95s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 03:17

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General

Target

2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe
Size

68KB
MD5

fb13e8ba9470c8b465a08fb52f8e5dbf
SHA1

e55bcfc0e66f22ad7c6351b991ab7761603135e0
SHA256

a6f3a07018e6fc17a08dded59c71cd882bc44d5663ef86a77ddc7040e8425d52
SHA512

a0dea9db9bb99058fb4af13722b977a42df92c4dfebcd48a61b0777ebd0448e32d08ab8703cc36cf54d6ccd23f1055c15a9106c2d3d6903347137d775f2fae3f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLE+:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226f2-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226f2-12.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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
548	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 2132 wrote to memory of 548	2132	2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe	81
PID 2132 wrote to memory of 548	2132	2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe	81
PID 2132 wrote to memory of 548	2132	2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_fb13e8ba9470c8b465a08fb52f8e5dbf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2132
- 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:548

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
69KB

MD5
6cbbb3c5b52b25d8687b2ad94b377d3f

SHA1
09f0a486bf2253e58cbdcd8187086eda51773dc9

SHA256
624dcc8a87b56b8efcbebc631d10ec9201ddcb075840e506a4b6f719161f56b6

SHA512
0e04f9a1cf53370a7e5a25e6bd0f401cc2d8b382478c3c252a06a89b637e06259c3aa091039fa8645c9ad7570a204b5fa44f61c40215287f52e8d976a670103c

Download Submit
memory/548-25-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2132-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2132-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2132-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download