42f4834beedd0de363e258ebd2cb2370b0d2aa1185578ec4ed3c6cc7dcb4fbe5

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
02/05/2024, 03:40

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe
Size

44KB
MD5

9909e8d405b762f8346060ba33ce88f4
SHA1

aaea9629f57c5378e42af5c5bfbf14a697be03a4
SHA256

42f4834beedd0de363e258ebd2cb2370b0d2aa1185578ec4ed3c6cc7dcb4fbe5
SHA512

d1a03bb994844602b9e748934b797ddae07e8675b7a9820b53fc98c12acff08ce28d0a7406fba6b29c58385097d322748afc45356e532ebc9f36f7a787592d9d
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphej6NTj:bc/y2lkF0+BeVf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3d-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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
876	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 1012 wrote to memory of 876	1012	2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe	84
PID 1012 wrote to memory of 876	1012	2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe	84
PID 1012 wrote to memory of 876	1012	2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_9909e8d405b762f8346060ba33ce88f4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1012
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:876

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
44KB

MD5
15d9434003cd27aede8bf949f2fd81f9

SHA1
1115e7044b20432c09f8f451a69e6f1e722109c4

SHA256
2ae04f55ca55ecb513c11113643e7d0665a9c0c221f65c1958d7ba920589490e

SHA512
42632c47747c47e69920eb95661a79e1869fb2dd5c820f82a647d04e220b45175306a53cbcd959846dde523363db407e8e546a94e9332b1373cbc9214bf7d196

Download Submit
memory/876-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1012-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/1012-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1012-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download