4411829191f4753d334807fee1e080163ba1fdc514a390af37628ed153656128

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 04:40

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General

Target

2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
Size

50KB
MD5

3b48e9a3ac12a82fee3e7c8eb0a51daa
SHA1

7d50c3568986177fcde81fe9ac4ef0878f4b4f0b
SHA256

4411829191f4753d334807fee1e080163ba1fdc514a390af37628ed153656128
SHA512

d477c82ce0b55f85a3f560279d57412888770ddbd014eb8f16f31cff1f8678afba56df7a2268965fe96ccbe9c62b40b5b1049ea4fc1da9bf034a67547849724a
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIb:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023210-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023210-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	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 1800 wrote to memory of 2380	1800	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	90
PID 1800 wrote to memory of 2380	1800	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	90
PID 1800 wrote to memory of 2380	1800	2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_3b48e9a3ac12a82fee3e7c8eb0a51daa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1800
- 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:2380

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
50KB

MD5
75afa1e1b511fa4a25f3df242f48364b

SHA1
5efa9e7de8eeda8799ec58237e92711cef3e76b6

SHA256
a5b591ca22e6eba3fdfd4fc2bddf8d87606e1ced57f35987f769cc154918b848

SHA512
46781bf1f1d3d9bfc76c81e379555952b2ef41843afc15c5ebfa374f789d2f6942a97402656bfaba07c1ad0b482c46d016c2bd70bed1dc4eedf5a3067a5225cc

Download Submit
memory/1800-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1800-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1800-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2380-21-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download