0ca2bf448b81da2babd34225672146fdfa055677501a0cf4b40328d0bc3b9e1c

Analysis

max time kernel
137s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 19:01

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General

Target

2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe
Size

37KB
MD5

241526d806562c693ec744c76819b767
SHA1

12ba776f7b3e41cf31526f4fcc8a4799e317016b
SHA256

0ca2bf448b81da2babd34225672146fdfa055677501a0cf4b40328d0bc3b9e1c
SHA512

33ace9401d66e959983ba9d33d2668047effd2e0e410f6414da61596b5c37052831085c6d2faded303de11d8a073d8fd241b4b53333b7635a751bfc11d4d5ff0
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0wfhP:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328f-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2288	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 2796 wrote to memory of 2288	2796	2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe	82
PID 2796 wrote to memory of 2288	2796	2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe	82
PID 2796 wrote to memory of 2288	2796	2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_241526d806562c693ec744c76819b767_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2796
- 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:2288

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
37KB

MD5
cf6339bc7d6f92eab5165ea7117c91e5

SHA1
5dc7d1f79a244597dd0b5ed2d0b30b7b9542f8a0

SHA256
d923d37f9af8c79f86d3098cf789798da44cf138f48fb1fea329aa1b1a75fd73

SHA512
8fb2073f7e01cd4e9f0711ae024c6d46278d35f579443a46688cb0899ceff09d771ece01a954a2301f7e000d3415b663fea72a2bcdb97e31554f20345556655f

Download Submit
memory/2796-0-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2796-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2796-8-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download