44c333534980e561f853b50225f51d4ba3faa6bd90f424f38986b52d4657cdd8

Analysis

max time kernel
148s
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
03/05/2024, 15:29

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General

Target

2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe
Size

37KB
MD5

986857b6e5dd207bdae00aa89bc35c9c
SHA1

5abc792fa112537b55a94748df0b5774da8e05f7
SHA256

44c333534980e561f853b50225f51d4ba3faa6bd90f424f38986b52d4657cdd8
SHA512

6a2bdfb4ac75a3ab9a27a2c3398d2b63f84f2e59b3ef9bc8a9e47496b39228925ea6bb8415f918e363ecc4f10a3b48170418d9b228e49bc69ac19fe7537acb2a
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mI1k:bc/y2lLRU6zA6qp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3e-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	2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3276	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 3588 wrote to memory of 3276	3588	2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe	84
PID 3588 wrote to memory of 3276	3588	2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe	84
PID 3588 wrote to memory of 3276	3588	2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_986857b6e5dd207bdae00aa89bc35c9c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3276

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
37KB

MD5
2810f85a734549e387a0412f0257d8f7

SHA1
68c8bc6ca603fd0738a3173dde90acccff204102

SHA256
a48b3559abe53a7548c40be796f2405cb12dad1b955fcfdd2d1a04bb3089848a

SHA512
3cf3178307c394eb7127095e18825c8721645ae07f5d0caf1b9bfc3cacc1ad5cc10e2429586b6edef9d378d6a1928bbe2a71b9c83d1931780058a9143a4bf99e

Download Submit
memory/3276-25-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3588-0-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3588-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3588-8-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download