2285b38070b166c1e6bb2d1568ff12d21eaf76a2058079a0a396682e00b1f492

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
13-05-2024 19:45

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General

Target

2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
Size

30KB
MD5

b4620b96c583abe876fa7022f48a6407
SHA1

477a558b33d6ab253ef323bf68b1c8ebf605a973
SHA256

2285b38070b166c1e6bb2d1568ff12d21eaf76a2058079a0a396682e00b1f492
SHA512

49b8eca645fe49a623566bc766fd00bd40f49488980352e352c88ed5f46ce9ada32049530e32c75ccc20571f535d1f2cba3d61b3934515821cbc7ba9a4a6a039
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNfl:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023288-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023288-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
8	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 4596 wrote to memory of 8	4596	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	82
PID 4596 wrote to memory of 8	4596	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	82
PID 4596 wrote to memory of 8	4596	2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_b4620b96c583abe876fa7022f48a6407_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4596
- 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:8

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
30KB

MD5
3a63cde74cd9aa7c0ad94179965c00ea

SHA1
dec7538534decaaa6c38a4076155d8c4d6ff7047

SHA256
805fefad82311865f6d3907e571ba7d723431cc93fbe2467247a63680af65c59

SHA512
924ca0d2c5c68ef38475d3ddd50b129419e8c308c2523174199ef7fb1cea8f94224aae4d376abff717e6497eecb4191e34becafcfd635fe0680b89b9e2785248

Download Submit
memory/8-25-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4596-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4596-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4596-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download