ccfd14bbd52991826a0dcc89e0b57fcba533243e784e8ac7ee61c7f70d5430c1

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 06:50

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General

Target

2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe
Size

52KB
MD5

b91efe6fef03f26073aa7480fbbdd35e
SHA1

ad0f1283d5250c43cb658c593717ae07f4128bf7
SHA256

ccfd14bbd52991826a0dcc89e0b57fcba533243e784e8ac7ee61c7f70d5430c1
SHA512

0f29c7db049952de2c9a9d811eda5fe962a42c95d873b6d326b53bae970ea93819f46ae427f0cdb3b31874e1936ff0756b83640bd9bdac69496a7835e47ddc76
SSDEEP

1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdO5SkT:ZVxkGOtEvwDpjcP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023201-13.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1692	misid.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 4588 wrote to memory of 1692	4588	2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe	85
PID 4588 wrote to memory of 1692	4588	2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe	85
PID 4588 wrote to memory of 1692	4588	2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_b91efe6fef03f26073aa7480fbbdd35e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1692

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\misid.exe

Filesize
52KB

MD5
67491b693f740356ee20be8b1e271f9d

SHA1
702d8cbf7d4f61b4576012c2a03089243b28eff9

SHA256
499e14fa870aa28d5db9d9eae246e97f6dd155d37caf45bd22a8111a0a1512fd

SHA512
a603bda8c3886983697ba56b64e4c8e53aea8c3f5525d3182e52ab25a84ebc877b625e7ea70e643e4b05e05a01ef278d4c90fedcd443ef4b8d01cf2d1333fbb3

Download Submit
memory/1692-19-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/1692-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1692-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1692-27-0x0000000000450000-0x0000000000490000-memory.dmp

Filesize
256KB

Download
memory/4588-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download
memory/4588-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4588-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4588-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4588-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

Filesize
12KB

Download