4026c711f13df8414b61f9e47ca237f4d622d5dee3747a2ba81a3bba06b57629

Analysis

max time kernel
138s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03/05/2024, 04:42

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General

Target

2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe
Size

65KB
MD5

8f25e0ce268e09e57c877b474a56f7e4
SHA1

a0c9e24afa6758d031fcba96cd075a5e9f9b7ec7
SHA256

4026c711f13df8414b61f9e47ca237f4d622d5dee3747a2ba81a3bba06b57629
SHA512

79028d16cd17b8e51ee9b8e43aeb4673257fa60a30c64ed1fc733b973f58d2ee2de2ced4107042c0100fa2442b1b32eb09b80f256c93e24a3b6904e80e926ec2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299r:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7j

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b41-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b41-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
616	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 1948 wrote to memory of 616	1948	2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe	84
PID 1948 wrote to memory of 616	1948	2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe	84
PID 1948 wrote to memory of 616	1948	2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_8f25e0ce268e09e57c877b474a56f7e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1948
- 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:616

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
65KB

MD5
3e00d56634ea0f29e436dc0316001069

SHA1
d01fcf70f79f0d4ad4398ebbca50bf2efa5167cc

SHA256
445f2d828f8213aaa65483dc3815187c9bf5d86538769e8cc9c91d40f889dfdb

SHA512
4ebc94e3e948792854be34c8a23e5e0f4db9e218745b5ddc6fc200d61d002c6850c8d91a65f8bd7c5a2732b6320f3224e9639363f598d31a73de7b8c08f0b780

Download Submit
memory/616-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1948-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1948-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1948-8-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download