623db906ef9aa665a96ce4698bb0771076a00a28088efacdc53c75822204d9e9

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 19:33

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General

Target

2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe
Size

40KB
MD5

5881d6c01019384cef9a5998df5f3606
SHA1

0c7e3ac8a13b84e68c19165826e6180d1caa3a71
SHA256

623db906ef9aa665a96ce4698bb0771076a00a28088efacdc53c75822204d9e9
SHA512

635768992c916cf1249090f69c30f7dca56a7df44640f9bf3007c87b7166a19ee42c2e2bb7fc17709d7228a61c439a37656deb9e2dd2ebf8432163c6acbc3294
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQLI3JnoehFORqLqJ:V6QFElP6n+gMQMOtEvwDpjeJQy1hoRqM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023242-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023242-12.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-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1608	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 1876 wrote to memory of 1608	1876	2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe	87
PID 1876 wrote to memory of 1608	1876	2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe	87
PID 1876 wrote to memory of 1608	1876	2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_5881d6c01019384cef9a5998df5f3606_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1608

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\asih.exe

Filesize
40KB

MD5
f69ad9ad1f65e44d5f821edf7bda9361

SHA1
c3df05ec7e39a6d5a379c3cc7277f4a2000524ff

SHA256
3e8bb9428ebb20de3f3acc3889319aaa5d1e3831ad49832398efb4d56eefae23

SHA512
82879be25dd96225912cc6571018b00cf78d77c1a97b25f0a1ada2dded039a437b73ac5d16ff449f5543cf734a102307ed6ab5d53f2cc354218b8191503fc36e

Download Submit
memory/1876-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1876-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1876-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download