b1a973cd2f832e3b7b19d3489bb1f1e0b1c27517590451698841a9ce59a4daba

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 04:29

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General

Target

2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe
Size

48KB
MD5

46d263eb5f2d7f65c3c981d73d19b254
SHA1

017d5fdbe74e149787001ef2380dd1eb4902b641
SHA256

b1a973cd2f832e3b7b19d3489bb1f1e0b1c27517590451698841a9ce59a4daba
SHA512

59a1a2d4072b642274fb885e4d221106723081d660269c9425da7bea77d0a9a92081e76974da5450cd78033e15ed8b9a5bf41dd6b92f9827e3a6c953259e3978
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatK:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2744	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 5088 wrote to memory of 2744	5088	2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe	86
PID 5088 wrote to memory of 2744	5088	2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe	86
PID 5088 wrote to memory of 2744	5088	2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_46d263eb5f2d7f65c3c981d73d19b254_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5088
- 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:2744

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
48KB

MD5
f13c4caacd866fba587949e1442ab695

SHA1
6643f847454eb0452cb22c786aab2c95073ab92e

SHA256
30e489f7de80d84cf7cc030744b74fcd9be836328eb0ce635f43f65f6fb15df3

SHA512
096d830105ddfcd10cc96946b5d22e7aa180196403a6c6e343964ddd54dec20ef279ac07f40dd2ab3d358af61544ffb5925997bf888f9e40424cfdfa8a0714ce

Download Submit
memory/2744-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5088-0-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/5088-1-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/5088-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download