408c716a7d8a0095838ac22f7ad1002b946a15c98f9a9dec4cc0f61f9b128242

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
23/01/2024, 05:12

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General

Target

2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe
Size

30KB
MD5

d7dd4ccf95be53a97d858acffc63bf89
SHA1

15d967f4dc45dd9e6a749b3207c7776b815b8a24
SHA256

408c716a7d8a0095838ac22f7ad1002b946a15c98f9a9dec4cc0f61f9b128242
SHA512

2b4db646c670701fe8ce45820ab68495057b8e6a221bf337d90cb7d0d2f83d9c1447000ca4908319fba159044f19fa2f2b110fc8f5fed723559131a5565f70ae
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznp:b/yC4GyNM01GuQMNXw2PSjp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000230f9-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
224	retln.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 2772 wrote to memory of 224	2772	2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe	87
PID 2772 wrote to memory of 224	2772	2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe	87
PID 2772 wrote to memory of 224	2772	2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_d7dd4ccf95be53a97d858acffc63bf89_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:224

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\retln.exe

Filesize
30KB

MD5
8970ee239f72d9cda537c034218b0b7a

SHA1
09ca390ee97c525e664e1827ca12090203e122e4

SHA256
bd0e08371d62c24e5414d3ef19c3888f55cade860a0c4c6ec2db63e4aaaeb82b

SHA512
a959d99fa6915f47de90542152e97d16e28742b422776d4b84dbef212122f4f19e084fe08d268e3b0321788b0ebb389c1d869e2e4a327e5b2c0da6d0e7973661

Download Submit
memory/224-22-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2772-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2772-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/2772-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download