a808130e47f33eda49eb74fa439de9f70249a9d2f1acca70cd75c2766c8e2f0e

Analysis

max time kernel
146s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 09:08

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General

Target

2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe
Size

124KB
MD5

b75ee538df2b93b7cab65d35a9ee96ad
SHA1

cbf5e7c68e38264276cde8cc00dddb0e8f2850eb
SHA256

a808130e47f33eda49eb74fa439de9f70249a9d2f1acca70cd75c2766c8e2f0e
SHA512

7e96ebc6f6fc7b124bdef1e9cae9d3d9ddf49ba665a95eb89cca781fc1fccef4c443de10624d98344eff812404ec8236f8f332eb46163581f939f718b4e73ae3
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxE4V:vCA9OtEvwDpjQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023214-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023214-12.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-1-5-21-3538781373-1545967067-4263767959-1000\Control Panel\International\Geo\Nation	2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4568	misid.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 4476 wrote to memory of 4568	4476	2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe	89
PID 4476 wrote to memory of 4568	4476	2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe	89
PID 4476 wrote to memory of 4568	4476	2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_b75ee538df2b93b7cab65d35a9ee96ad_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4476
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4568

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\misid.exe

Filesize
124KB

MD5
669674107ab88b28a966f9c751e6073c

SHA1
4051513925159de71c3e457d4f6067815466fefc

SHA256
1de8eb4385b18bbc94a3b6b3f76dd10bec723448bb5d913ad6139f3f44228022

SHA512
587b4427c86ca5467bf9bc16b21c01861bdcec5e6a0458eff8af99ec2bf7a00c49bb55df310e668751bb929ff49cc837dd2f5b34d1636aebd3eb3415030f411d

Download Submit
memory/4476-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4476-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4476-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4568-18-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4568-17-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download