4a278ce2a6e9a0d9cdbd11472f7f459a9c14496520078aae1dd6f714020bfe40

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 03:33

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General

Target

2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe
Size

53KB
MD5

4258191977def988d750fa2013d4aa01
SHA1

c3ebc7be57166624e34e787914455e918b830d3e
SHA256

4a278ce2a6e9a0d9cdbd11472f7f459a9c14496520078aae1dd6f714020bfe40
SHA512

931a4b087f5c5c3a4b0d6038276feab460ce71f53e9a88e121537d4e3b9c3c5112d36889597ea7fb1431a4c606b5efed3ec4af1088ac462d85aa0ccf49a0b539
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxC:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002329a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002329a-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3092	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 1820 wrote to memory of 3092	1820	2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe	82
PID 1820 wrote to memory of 3092	1820	2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe	82
PID 1820 wrote to memory of 3092	1820	2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4258191977def988d750fa2013d4aa01_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1820
- 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:3092

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
54KB

MD5
993628687f5a3d067df4c680ed137df6

SHA1
ba657570e1b0d7b7cce65a6af629f532f28c9b18

SHA256
4b4a81cf78a90e8b0552687cb3c8243d9e0fe170e5ff15f86b7f5307f4d67a67

SHA512
ad75d1890f347184f9133887d1587f85a16d7c32ec4d462d27d17e52342276755ede3dc1e7e7855dc55b9b55252378ffc0f9ef156f33bbff442f934e30be3be2

Download Submit
memory/1820-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1820-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1820-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3092-25-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download