b1ebcffa6843b81df89eefb069949f37009d1ab8bc7cfc651523eee2791de9ac

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 18:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe
Size

47KB
MD5

1dcaa0044fa6100c66e5d77c8eb74e96
SHA1

859653f07d15c6342c734a0d4af9e5cf3811203d
SHA256

b1ebcffa6843b81df89eefb069949f37009d1ab8bc7cfc651523eee2791de9ac
SHA512

4c1fb1e5e9f0e02558f17dcfe7f455a334bd0368cf2c59e80bc36d69c829e835388c8077b18095792e160dfffa0a9795321d4e8cc17f851596fc2e33b0e6b742
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2Vl:79inqyNR/QtOOtEvwDpjBKccJVODvy3U

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3168-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023278-13.dat	CryptoLocker_rule2
behavioral2/memory/1664-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3168-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3168-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023278-13.dat	CryptoLocker_set1
behavioral2/memory/1664-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3168-18-0x0000000000500000-0x000000000050F000-memory.dmp	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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1664	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 3168 wrote to memory of 1664	3168	2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe	82
PID 3168 wrote to memory of 1664	3168	2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe	82
PID 3168 wrote to memory of 1664	3168	2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_1dcaa0044fa6100c66e5d77c8eb74e96_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1664

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
47KB

MD5
11d61962772c699e50222e9058acbf28

SHA1
634974e60ca3886cb0c1c85ba229233b3198e63e

SHA256
1bcb1453ddf2e47f58fed710985e5531b94e47624d10630ecc1b57371a7dab07

SHA512
ce9e4184e6c721887c0ff24e47dc8f2745f00cef5f9e1f546caa725eff8b12e187c670eb63c69113d2ca615dd9c9ee8844d63c5e5d9492ed6d530c1f07ccabc5

Download Submit
memory/1664-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1664-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/3168-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3168-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3168-2-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/3168-8-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3168-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download