f4a534a00e13fb2740237eeeb3686f249c0e975c6ccb6027d0a4ebf232f7e0be

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 08:43

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe
Size

47KB
MD5

8e35f4445a57a034d79f3efbd3cf9af2
SHA1

2ebfb40b7f6877ad69f737c1b5f718d851f85ccc
SHA256

f4a534a00e13fb2740237eeeb3686f249c0e975c6ccb6027d0a4ebf232f7e0be
SHA512

880fc26b1c60c79af7852d0a65a85577d6f322045b09f28c33eb45974f7ca8e36e1f7b761b97b45356d92d1c612a6a87ca4fbee5caec3866bab1e007dc0a0fed
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRKA:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023138-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023138-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1168	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 3044 wrote to memory of 1168	3044	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	84
PID 3044 wrote to memory of 1168	3044	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	84
PID 3044 wrote to memory of 1168	3044	2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_8e35f4445a57a034d79f3efbd3cf9af2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1168

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
47KB

MD5
c7f3019a8d1df7ea2566100349ac6b75

SHA1
ea6db5944e210e7b4e622f28b4e152f42d639910

SHA256
e83759f181c15ea6817bf59e5d7a6886091e524944f86dfd6ab07da260628108

SHA512
aba9fc0cb5317e9986c78716ec48e2b4da958a3b84bffab8c23c9ec70e990b14be93a013dcd3c04261bb5b15e547da9f75b2eea54c340d39772d4c203ce6960a

Download Submit
memory/1168-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1168-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3044-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3044-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3044-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download