5309422efebe192238d0872cfbb1a65f734788cb2615acee79a4230e8b242a55

Analysis

max time kernel
82s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 09:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
Size

34KB
MD5

0a4679fa56a9484f8ae29b2bb56b9522
SHA1

1eab16a0e075a935e771fdec80a7d5352cf97ff4
SHA256

5309422efebe192238d0872cfbb1a65f734788cb2615acee79a4230e8b242a55
SHA512

29f224e2badfaab452ac89c29c8007e98348e890447be8c3d71de4e8814cc588b1852ec7c0a6d4564a2974001cea59f5b7ffbf82c4d0146e4c1cbb6dde87a116
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmy:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023150-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023150-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4072	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 1140 wrote to memory of 4072	1140	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	84
PID 1140 wrote to memory of 4072	1140	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	84
PID 1140 wrote to memory of 4072	1140	2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_0a4679fa56a9484f8ae29b2bb56b9522_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1140
- 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:4072

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
35KB

MD5
a7d98c728587ebed334b9c4121e61968

SHA1
562827ffce943dfc0409206e835182e298a13844

SHA256
4ef0ddf8183ccb1defee2b28a4a1d62ae6665671a2c383ad48946a0567af5beb

SHA512
733c1c2efbcb488a36898381935cd2209cbd4d527f2e4c1b22ba8f3a88ce30c5e1ba3902fa5cdeed29b4b17632a7b17f2413c258beb78c026e4a3e58a5225042

Download Submit
memory/1140-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1140-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1140-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4072-17-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download