bd20da8af0741245711e98c1e00672bb6a0d0ea255e1d9bdaa4da7d379e50654

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 05:46

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General

Target

2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
Size

52KB
MD5

cc8e591b4c49fc28da561d28b8f113d5
SHA1

0f83f67b4be385c4833c0b85f1c3446ad0c1dbf8
SHA256

bd20da8af0741245711e98c1e00672bb6a0d0ea255e1d9bdaa4da7d379e50654
SHA512

31e2a4919c1e28f75064ff67ec37e349dbd8e0a5f186e4a498c1061770e99693d8a814224a5992da4ca73a3a2a8c0f9c443eaaaa1c7f78a6c167b71a54985652
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxN:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002343a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002343a-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4428	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 3060 wrote to memory of 4428	3060	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	84
PID 3060 wrote to memory of 4428	3060	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	84
PID 3060 wrote to memory of 4428	3060	2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_cc8e591b4c49fc28da561d28b8f113d5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3060
- 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:4428

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
53KB

MD5
0cfeb9507dcd969a789ef7337e450312

SHA1
f3bf563149395aaabbbc9569c229cb1776d222d9

SHA256
3993e0fdbe5721578822d335acc8dbafafde6e5da111ddf64e9db2eae843b00c

SHA512
f9877a6c3c62dc62d878eeaeeca3923d0a0845f9ca54eda7fdaa488c3e6fed65c487e3e8f1f62156c10f98234a26d5446de9d45e89561fc1b860cf5e57e6c6ef

Download Submit
memory/3060-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3060-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3060-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4428-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download