0bd6eeadb13bcee3b6844e03f7196d2cf378eebb0037c1720dd2c6c82c8ac648

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 00:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe
Size

71KB
MD5

8963cc65d348fe7ef9f4d312ae2c0a00
SHA1

0f0bf5401413d39c06cd5926c9a507adcdcdf12b
SHA256

0bd6eeadb13bcee3b6844e03f7196d2cf378eebb0037c1720dd2c6c82c8ac648
SHA512

40ac2a57a1044039385b9b66a627eae2030ca76cccdf4b2457cdaf42da4d57757bf2f02fac7858130b83465ad859718f9f49b42f80c2c75dcdf81877de8d56c5
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1UWO:X6a+SOtEvwDpjBZYvQd2W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fb-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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1896	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 3112 wrote to memory of 1896	3112	2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe	87
PID 3112 wrote to memory of 1896	3112	2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe	87
PID 3112 wrote to memory of 1896	3112	2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_8963cc65d348fe7ef9f4d312ae2c0a00_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1896

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
71KB

MD5
955e10d34dccc13968ffb153e22ca354

SHA1
2a4ff4f716a71f87c1b801302f1acac532711d37

SHA256
699eaaede4a701b9db98dd6a023e6e7e45c540b5258751c09a22656464ae9c86

SHA512
81cac33fb55f1aa31748fc1e59e3391dec9f42c7a5748538f12ca22b0110fe7b048e86630ec9c4e071bfa163604ab71521fbdee8a01b80f24f1f68adba2ab7f1

Download Submit
memory/1896-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1896-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3112-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3112-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3112-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download