4b542920b075e0b0782f6e3b26c6e4888f0be71c5451320ba505e941af5f2628

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 06:44

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General

Target

2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe
Size

31KB
MD5

ad09f857c88c98241137f5ba1eb927a0
SHA1

ace9943c15d760b72d6efcc76d235f597b08a424
SHA256

4b542920b075e0b0782f6e3b26c6e4888f0be71c5451320ba505e941af5f2628
SHA512

963924f9186e66f5c74ecb549e0f992279b0ecf6094fe111c51808df43c5e9f5a5dcec6d55226d46cdf0c60fb7ecffe46f56e9069389fc7ed0f25b0072a7e4d9
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ5STBxVkpX:bA74zYcgT/Ekd0ryfjQRSnWBxGX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023213-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
184	hasfj.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 4832 wrote to memory of 184	4832	2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe	83
PID 4832 wrote to memory of 184	4832	2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe	83
PID 4832 wrote to memory of 184	4832	2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_ad09f857c88c98241137f5ba1eb927a0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:184

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\hasfj.exe

Filesize
31KB

MD5
bbf5588b0d26f42e27c5a3a4b8ac9b89

SHA1
1446dd179f4b3cfefdb864122114fa5f975c9ecc

SHA256
5c77940ec8ab15dc1754b61283c8d0b9c528c15f56a5c17b33fa8eb1605f08ad

SHA512
8f54f1f15ba5a9020b87393143ac121c7e8658fead81803fdccc7d707b43810da43a94ca5d2ce6adbf3758b43adcdaa903b36db0acfc1fdee2f6b270b8fa5aa8

Download Submit
memory/184-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/184-18-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/4832-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4832-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4832-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download