b8e9a5ba6358eb66b824f734188d30e9235284d3e9204d7137f26f50939d8f29

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 05:53

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General

Target

2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
Size

47KB
MD5

addeda45362c4f22412652147457b891
SHA1

d15978fe498b61ddf7fce4aedb966052a551c626
SHA256

b8e9a5ba6358eb66b824f734188d30e9235284d3e9204d7137f26f50939d8f29
SHA512

fe02d97d80fb09881b6e4740efbb0c6efac26431b7e5d77e6bd9a57f30af25da3251c55da956b0d127942ee41f4d4bae1d439fe794225596fa0829d2e792c8f2
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3432	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 3776 wrote to memory of 3432	3776	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	91
PID 3776 wrote to memory of 3432	3776	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	91
PID 3776 wrote to memory of 3432	3776	2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_addeda45362c4f22412652147457b891_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3776
- 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:3432

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
47KB

MD5
3d6ce7b036305454dad8c8bd7f130947

SHA1
417916b7e729c1100a14065f0fde8a76e80ed7e7

SHA256
acb3a472fed3bf16ed82b0154c5c0b5cb35cda771163a9d637725d84791d394f

SHA512
4ded7586f75a09e1bae31e1e3f11dfe08f0599e34ab92e17a242e242e604abefe0336f0761e9077c0d30527cbd11ca35f3f4d78068cd1ba173c0d23a933c4d34

Download Submit
memory/3432-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3776-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3776-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3776-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download