805aa49b2408090b7d2252dea766b0100efcabc45d45d18ad81533eb8c98d14b

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
27/06/2024, 10:25

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe
Size

46KB
MD5

3198eaeec4fe00620a22e3dd076f243a
SHA1

f5dcfbc2f01e65578c8cf57351ebd0a70376949b
SHA256

805aa49b2408090b7d2252dea766b0100efcabc45d45d18ad81533eb8c98d14b
SHA512

e1c8986f357dd5ea5c1f77ce5861f7b9402f001944ef923adb1707166ab0b8ff13c281ef73d2c2a56ad422ba07cb69621a5d8f302da35b204535a519944d1129
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUadQC8w:bm74zYcgT/EkM0ryfjPdQZw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4304-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00060000000233cd-13.dat	CryptoLocker_rule2
behavioral2/memory/1728-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4304-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1728-27-0x0000000008000000-0x000000000800D000-memory.dmp	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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1728	hasfj.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 4304 wrote to memory of 1728	4304	2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe	83
PID 4304 wrote to memory of 1728	4304	2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe	83
PID 4304 wrote to memory of 1728	4304	2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-27_3198eaeec4fe00620a22e3dd076f243a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1728

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\hasfj.exe

Filesize
46KB

MD5
fecb99ef223e196051509f3524a0e7b7

SHA1
32e9f7d209b971ced7fac245cdfd489af04395c9

SHA256
ebb3e6d0c5607a5d265c1b6da7f078c58bb08c8ef6be2a4f7056b730797cd7c5

SHA512
c91fb2b6be9a99295b4aceba7a54f11dbfd9102129241a3b9f6c46eed31a1cddc34ceb13448addc62dca37ebdf596f1b2514eb46e9401572d6f27558f479cd03

Download Submit
memory/1728-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1728-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1728-26-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/1728-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4304-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4304-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4304-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4304-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4304-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download