679d214aee7de944f43295001eb37b9675acfa01b064d564c13f76ae69bb2caa

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 22:55

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General

Target

2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe
Size

385KB
MD5

87a9b1c588a7913b47ab6f1488cf7b31
SHA1

b103677fea445e72e3c795a645b5d712d41a6ec8
SHA256

679d214aee7de944f43295001eb37b9675acfa01b064d564c13f76ae69bb2caa
SHA512

1e0b1d35fc193faedcdf6fc3f9c2b6dbc20cdf343d78ca509b56a0a8ddbccd2d1ed3376e642c4cd030ea9a6887c82cce04ac2fd31893c20aad7ff0bf056ca109
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXO:nnOflT/ZFIjBz3xjTxynGUOUhXO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023127-12.dat	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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1600	hasfj.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 5068 wrote to memory of 1600	5068	2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe	83
PID 5068 wrote to memory of 1600	5068	2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe	83
PID 5068 wrote to memory of 1600	5068	2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_87a9b1c588a7913b47ab6f1488cf7b31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1600

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\hasfj.exe

Filesize
385KB

MD5
e31897fc53e793b81fd76fb44cb1c12e

SHA1
385f405f742ae5d58ddf2573c0736a7a780e8cfa

SHA256
85ec168ee2d239b93c08491931023d5543c99b0bd47b06d59f9b814d9faccc2f

SHA512
b639393ca0028671a751d96cb743c63e65c6fc8cbec3b966d880714f53cbe4d9c6d34f23fc2974ded6545a61d18bdcdb7de33fec7dd98a13bd74ab1c8477eeba

Download Submit
memory/1600-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1600-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/5068-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5068-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5068-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download