69cdcc0fbace8262ae7975d97888cf22dee4bb3291c43ff3a2f9c5a4dd0c8805

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2024, 19:43

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General

Target

2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe
Size

39KB
MD5

0175e1b37b04eedbf7df20290e8556fb
SHA1

689aa45244b5bc320f8f071f9fa8e929b5755d02
SHA256

69cdcc0fbace8262ae7975d97888cf22dee4bb3291c43ff3a2f9c5a4dd0c8805
SHA512

3ca590e33a96aa2ac05d5c0cb4e08f2b3d3457e4718452ed97e49eeffc0ca9abe4f7befc38ee9d705b54c095e5fa9de9712115c1276101c363d7025f7c7f027d
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAI:bCDOw9aMDooc+vAI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4892-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e980-13.dat	CryptoLocker_rule2
behavioral2/memory/4892-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4460-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4460-27-0x0000000008000000-0x000000000800A000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4460	lossy.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 4892 wrote to memory of 4460	4892	2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe	89
PID 4892 wrote to memory of 4460	4892	2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe	89
PID 4892 wrote to memory of 4460	4892	2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_0175e1b37b04eedbf7df20290e8556fb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4460

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
39KB

MD5
0c6563ed25f3ebba8b7969962250f00c

SHA1
73fd2014434e6ff8eb2f9cf0a480828ff31f9ae9

SHA256
40f36fbe1c8dbb13236a7c787e3cb9343a0e66f94287d0dc40dd0b5d29c399eb

SHA512
3efb04215a3b5d83c2e4a9b06e3a1dfb7acf2b697897b02a896a234b87fbebbf689b110f7aa8981cd7c09883cbcaf00de4cf74894a67f5d8f5c9081a28ea7120

Download Submit
memory/4460-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4460-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4460-24-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4460-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4892-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4892-1-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/4892-2-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/4892-3-0x0000000002030000-0x0000000002036000-memory.dmp

Filesize
24KB

Download
memory/4892-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download