d9b6b7fa49354da76f59420fc74a096e3c2cbebf3b04ec5676ff53502ee52af1

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/02/2024, 19:47

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General

Target

2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe
Size

386KB
MD5

a426b7fbf9e0f08041832790b4ab5fdf
SHA1

6f41f5508bc42d9d04c41d77808799d9c6b86c4b
SHA256

d9b6b7fa49354da76f59420fc74a096e3c2cbebf3b04ec5676ff53502ee52af1
SHA512

4bd0aea11ca3b75431549ddfd64689f9530b23380025659fafb37434cb0f26b076d08ced9c828453214d7b90d26d6d2d2a601c91dba45eb7c5e962ed9287d6f7
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXW:nnOflT/ZFIjBz3xjTxynGUOUhXW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022708-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5080	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 3384 wrote to memory of 5080	3384	2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe	90
PID 3384 wrote to memory of 5080	3384	2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe	90
PID 3384 wrote to memory of 5080	3384	2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_a426b7fbf9e0f08041832790b4ab5fdf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5080

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
386KB

MD5
0a0468dc9a87d66e9f6a7133a3b8c1b7

SHA1
16c13e2b9ce6b5da1591c0a520a1c2e47d2dd0db

SHA256
3c7405f377ace0ad52babdc169e480f82b0cda224e81f1177469c77ba260bdac

SHA512
ddb69b7b2730ff7ec2f93ba99dcbdf94319002d0a09d60af3b1092e9263f235b08611f7becda7182668f60ec2abff60fef62df332fc4bc99a11a3024938c122d

Download Submit
memory/3384-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3384-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3384-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download