33480d0db35ca24af2153c26f74edba0f1940a99f53f4ddb48e1aeca029bcd01

Analysis

max time kernel
143s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 13:52

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General

Target

2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe
Size

42KB
MD5

90072f6e5b69e0a11db570f000ab0716
SHA1

1ceb61c5e223dc8826dc4590e5ec0d40b1c8c84e
SHA256

33480d0db35ca24af2153c26f74edba0f1940a99f53f4ddb48e1aeca029bcd01
SHA512

7aa12238591c2089a928aff3929eb2c37ff07c8e4e8dc39a62e822b1ba8284d8cf762cdf48fe7976fb141d8e720ed0b747a672b8696ca959266f07c202679ec8
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqG:bc/y2lkF0+BjG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231ca-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-1-5-21-3054445511-921769590-4013668107-1000\Control Panel\International\Geo\Nation	2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	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 2452 wrote to memory of 3680	2452	2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe	79
PID 2452 wrote to memory of 3680	2452	2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe	79
PID 2452 wrote to memory of 3680	2452	2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe	79

C:\Users\Admin\AppData\Local\Temp\2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_90072f6e5b69e0a11db570f000ab0716_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3680

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
42KB

MD5
89b339f085b4db41c038f23afdf90ae9

SHA1
e597b5e65bfbfba56e361270a0367b5c3284105b

SHA256
a6ffa8e47ec5a1f4a5f78ff8bbe8168dee3d69a2ebd3fc21b6a33ce545480205

SHA512
606f8ed777ae9b967dd14decf69c37a6970ab63eacddcd1c398b923cc6d7fc7f2d2dd11e5de61a39c3271f464e502f4c5fa8a5a27215db38b2fe04e5e9a9d1c3

Download Submit
memory/2452-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2452-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2452-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3680-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download