f1009c63c3f1edb9685face3ea4177c584a53e8942c72c5eaaf3a8225a721b8a

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 05:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe
Size

43KB
MD5

d1da81770f1004b07a09913e312c198d
SHA1

1bf7526348be54ee04e59ca99d7a4817a46e1889
SHA256

f1009c63c3f1edb9685face3ea4177c584a53e8942c72c5eaaf3a8225a721b8a
SHA512

88f7383dfc57b8280a7ed7a334505368c8754801a4d70eab776d92a061633d8a88dcee1f9cecac1f6f7e058ed204a557a31cece49115df46867f4c43346b5384
SSDEEP

768:b7o/2n1TCraU6GD1a4Xcn62TUdcuQlqJ51mwojQ:bc/y2lm6Y0AqJ51mwojQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023209-12.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3792	rewok.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 1460 wrote to memory of 3792	1460	2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe	91
PID 1460 wrote to memory of 3792	1460	2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe	91
PID 1460 wrote to memory of 3792	1460	2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_d1da81770f1004b07a09913e312c198d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3792

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\rewok.exe

Filesize
43KB

MD5
17136c67928f110175865eb7e3462824

SHA1
5ac58a017e88f976cb126d81e5281dab5a6ed447

SHA256
d71fd2e3962adcd9b9188d6bd4418c67f08d64426e2fbb8bd3f9d404643f7131

SHA512
41d462612eca7284d8f8ebeca0098e24d52fb76c716c5b1954cf8932718201612164b13fe4e2de2b766e1be1f157cddaed9447f81583c1b9ea83048fda122318

Download Submit
memory/1460-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1460-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1460-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3792-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download