2cc0ec5e5b82763610701847769e637bfbbbdc2a9254341ddc7d50aaaacd3c5f

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 08:28

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General

Target

2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe
Size

41KB
MD5

5db4deb042337f543fdf7deccee0ef4b
SHA1

4d2b416acf1a64f1d0534a5b604e4fc64aca9299
SHA256

2cc0ec5e5b82763610701847769e637bfbbbdc2a9254341ddc7d50aaaacd3c5f
SHA512

c1ad54fd2ac19f665bc8e0075fe8abd5fafb462f671b995a0b06abdf76d1fe0415a8fa42af69d9ea70a420267c27746a22cc83273279e7538feee265b25d4a3d
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqT:bc/y2lkF0+BjT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023039-12.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	2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3740	rewok.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 4232 wrote to memory of 3740	4232	2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe	89
PID 4232 wrote to memory of 3740	4232	2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe	89
PID 4232 wrote to memory of 3740	4232	2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_5db4deb042337f543fdf7deccee0ef4b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3740

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\rewok.exe

Filesize
41KB

MD5
44ee0983dbac5ee87a5ccbed0edd4f4a

SHA1
cf28fc7551370d5be499488cc36a30f0ab4813c9

SHA256
88d5d32e120c06befdca8216a497f0358d07a4f73c1de46125fbeffb6882456e

SHA512
a44a8d25a82cc02e924a88027d8b76d0af4115f66541aa0f1587cd3a46daccd343435b32793e2c3d455ec7e312af41933c8bf6a9e6c1dcccc0685f122f406f10

Download Submit
memory/3740-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4232-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4232-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4232-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download