b7cee661ed2bbf92c53de025d019ec56fa7860de25458539e4ca75ac0d8c6bc8

Analysis

max time kernel
138s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 08:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe
Size

45KB
MD5

ded73e00ecec6250b6558546158f00e6
SHA1

f9eb8caf151fb9e338234fe3c58adef28104e791
SHA256

b7cee661ed2bbf92c53de025d019ec56fa7860de25458539e4ca75ac0d8c6bc8
SHA512

a530e9ebead68685358a527f44ba2ac54bceb4da6d3e089fa3e18fd4be117d6d0963e9e4a73ee895943ec41d4fb23d6c3e2f11ca8754810991d4b329645334a7
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSS/hS:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3856-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023139-13.dat	CryptoLocker_rule2
behavioral2/memory/3856-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3856-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023139-13.dat	CryptoLocker_set1
behavioral2/memory/3856-17-0x0000000000500000-0x000000000050B000-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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2752	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 3856 wrote to memory of 2752	3856	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	89
PID 3856 wrote to memory of 2752	3856	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	89
PID 3856 wrote to memory of 2752	3856	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2752

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
45KB

MD5
1409ef78797641a95977d75727f664ad

SHA1
fbad9a0aeaa29bff82c02ff498a151bf5eb7cd52

SHA256
ffac4704c31ececfe8921dea59abec8215281dc4f3f8aa2210fcbb436406f5bd

SHA512
279d17d38b2688c2cdd07b0456acbf1ae7247ce1190fca84909cdc33496123d4a2ccfcf94ca88e3b51f3c6f0e7dfdc83f930cb69d3569ad9eee0c4543e939c65

Download Submit
memory/2752-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2752-20-0x0000000000870000-0x0000000000876000-memory.dmp

Filesize
24KB

Download
memory/3856-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3856-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3856-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3856-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3856-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download