bdf1501fabe86800db860a5af2929f11aae30530c56d5d6b648924170f0d4f5f

Analysis

max time kernel
147s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 15:28

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General

Target

2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
Size

44KB
MD5

8a017e8a4c4b2bd25bda9ea2a7ec6e46
SHA1

aa328fdd3fe196e0e9703bb672bb1c6dcdd6e15d
SHA256

bdf1501fabe86800db860a5af2929f11aae30530c56d5d6b648924170f0d4f5f
SHA512

f11af9e8d149eb5f395794ca4571217d62faa9728e1f2feb98f580efb539d2e6c89848dd96923b0dc8025a24f00d1d81951d2c1d9de7b52aa6c46d8d3cac0782
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxX:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xy

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 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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3764	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 4664 wrote to memory of 3764	4664	2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe	82
PID 4664 wrote to memory of 3764	4664	2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe	82
PID 4664 wrote to memory of 3764	4664	2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_8a017e8a4c4b2bd25bda9ea2a7ec6e46_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- 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:3764

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
44KB

MD5
67c4ce5da9f55bcdf45e78664d972952

SHA1
6eacf2bb0e0a556d7a4c5d49692962a349d67a5f

SHA256
a1decf4eb35aec29819e65d06661078f9d5bb3702d7a094f72b548f2a2ea11c0

SHA512
d8a0ad31aaa7976abb0c3cbf631a0219fd6aa441dcb8b770d9a3d6fb8e93001a8e8f59d9b74a381cf5dc1bb146fa369f13d9eb3da9efab6f6b4c36899613f2de

Download Submit
memory/3764-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4664-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4664-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4664-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download