589810ad7a34900001932972f5e694873e70c60c4895dc0e78bd44da4cb40197

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2024, 10:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe
Size

48KB
MD5

4bd112d363fe954a0e9d7fea46d82eda
SHA1

2b0226e3d418bee6c2c90b99a6655b0445898dcf
SHA256

589810ad7a34900001932972f5e694873e70c60c4895dc0e78bd44da4cb40197
SHA512

abd6c6c33d85152ebb866b693d728b9c6593bbf6f7f1a62e5a8712f9afdef9f08f63f2dad89677a3aab8bc98e45a33e5315ccc0760929d09bc2c949398fe8f3b
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3wwsr0JJc:X6QFElP6n+gJQMOtEvwDpjBD/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_set1

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	2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
836	asih.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 3684 wrote to memory of 836	3684	2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe	88
PID 3684 wrote to memory of 836	3684	2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe	88
PID 3684 wrote to memory of 836	3684	2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_4bd112d363fe954a0e9d7fea46d82eda_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:836

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\asih.exe

Filesize
48KB

MD5
499900799be8c4f6319df8f2e05749a9

SHA1
7d73e451a28fdc268f5a4a97ce75d3ed66fadf20

SHA256
700de88408afffd5763ca63818583ea39f129dc265718399abf2707d72e486a3

SHA512
221ad153099cc00758a09fd607dd64125f8028d40dbf84516789687fc8a263a9948378edb54bf9b0f4e25fe2104266e778f5b45b1b5ceb49999637d47ac08cd9

Download Submit
memory/836-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/836-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3684-0-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3684-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3684-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download