8834d0f4ee9bc5253dba095e5d27b458104d23d00aae0f9573fe34124e0b9f24

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 17:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe
Size

68KB
MD5

2241fdbd997698f4dd5d560623d9a681
SHA1

b19a278c31aaa19aab3c940b5540194bcd819068
SHA256

8834d0f4ee9bc5253dba095e5d27b458104d23d00aae0f9573fe34124e0b9f24
SHA512

f953e0855e01f1f34cbf5b5e10a2fe7094eb3078d3baf096779366439419b1411bd65f463486dd9e9148b31995fbbc93ac12d4d40c52f295a8daaf3f108f459c
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUk:DW60sllyWOtEvwDpjwF85m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023205-13.dat	CryptoLocker_rule2
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3484-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023205-13.dat	CryptoLocker_set1
behavioral2/memory/3484-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2448	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 3484 wrote to memory of 2448	3484	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	84
PID 3484 wrote to memory of 2448	3484	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	84
PID 3484 wrote to memory of 2448	3484	2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_2241fdbd997698f4dd5d560623d9a681_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2448

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
68KB

MD5
367323bbfbe48f63d87ea4f09c2dd0ef

SHA1
fc600cb99aad7b43cfd778259be799bcc49ff09b

SHA256
1dad1c6f5e15b255fe2a74cb5206ae89e7a5de49f76df0295e778be09067754a

SHA512
b0805b9903db7cad68f9e62499fa780a3c2a7114f7aca802e0ba6867a9c277e48c2c50cb5b6c08e4d7e003ab8c48b19ab62b6e68d66b66c26f9392b2afe5054a

Download Submit
memory/2448-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2448-25-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/3484-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3484-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3484-2-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3484-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3484-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download