679ac848e9b296aa445ecfe7111b7e5b1eb2d7045351a7ef05efd3e58c63f74b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28-04-2024 01:46

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General

Target

2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe
Size

39KB
MD5

ea4d47bf29afc78f4200b07dd8df84b7
SHA1

6f3b22be94c0e4ca9ca6dbd95925bc4889b36b05
SHA256

679ac848e9b296aa445ecfe7111b7e5b1eb2d7045351a7ef05efd3e58c63f74b
SHA512

00fef4a23e38273126ffab2f57510acb7786241936dcb05f9f357ae697040bc16128350a80be3adbd3eac0c36116caf5e3c89c010898f49bd8e539e5d3230cd3
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/ExKv:btB9g/WItCSsAGjX7e9N0hunKLYOKEs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c000000023af8-12.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-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3104	gewos.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 1580 wrote to memory of 3104	1580	2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe	83
PID 1580 wrote to memory of 3104	1580	2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe	83
PID 1580 wrote to memory of 3104	1580	2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_ea4d47bf29afc78f4200b07dd8df84b7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:3104

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\gewos.exe

Filesize
40KB

MD5
f917cdd80d34659c0f71ee83bcd60bd8

SHA1
b37fdf54a9e9da35809b2bdc04b1d0a6895ef50b

SHA256
96af9acbc0293a28dedff63ba608606d73d4b289975c971c8656e59fb99797b6

SHA512
8b8727d49ac83e9a2c1bf778c6af73206456fae65328ff6745c6bda3fd6848e488dd6a90009e38eba8a02fb6ef2d6ab25452678b7b4728bbf37a0b76fb3f560f

Download Submit
memory/1580-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1580-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1580-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3104-25-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download