cde779c82acf8b6b3c42bf5f25de458036dbb274370ff26e3b20355528352e95

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2024, 10:32

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General

Target

2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe
Size

40KB
MD5

8c13c500a9c5070e5bae580eefba2874
SHA1

e7d108b687a682e7ac9040ca59a7090f68c9de49
SHA256

cde779c82acf8b6b3c42bf5f25de458036dbb274370ff26e3b20355528352e95
SHA512

44bd18d9f8b48c7194d10679abbf7cfacf884364cf925960f7ed8df2c9ab11ff329c72bdad0e85a22ebcb5e0c4a6711e799e3fe77390fa910f7a8691d658d938
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZy3:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
852	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 4568 wrote to memory of 852	4568	2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe	81
PID 4568 wrote to memory of 852	4568	2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe	81
PID 4568 wrote to memory of 852	4568	2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-30_8c13c500a9c5070e5bae580eefba2874_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:852

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
40KB

MD5
efae01b8a31cecae4b49adc811cf66aa

SHA1
efcd3647e734329f2d927b4dd28f8260bbcf53d3

SHA256
856639ad285e9c74342ff30898fd8355b7cf2f30c890e5d9fea994edb58c89fe

SHA512
5e22e05d86b5fd1e3193c06cdb583f9192b6892fc4ecd602ec8477e194647e1420fa1efee8e07b25d9d9109a3afd813b568f743900dee1c92be3fde6bcb03a1f

Download Submit
memory/852-25-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/4568-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4568-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4568-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download