0a59e34e4c8a47138210afb587c6936a59a4a0bfe1e63a9e969e63e34103ce9a

Analysis

max time kernel
149s
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
13/02/2024, 08:16

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General

Target

2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe
Size

48KB
MD5

d253bc16667582f3d0ec8eeb2cce6099
SHA1

18b92844da04d6e07868f4fe8f8c72c1ebf440bf
SHA256

0a59e34e4c8a47138210afb587c6936a59a4a0bfe1e63a9e969e63e34103ce9a
SHA512

2328d2c2f3b8b52d920f1b0e30489b917f57d341a44b9bd021a5dd493f5cfb89fb9d7c446a91209910b851b8a1e44959fe7a7c59ffac22e4f4c5e60f61987c3b
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnUCNK:79mqyNhQMOtEvwDpjBxe8xCNK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023236-13.dat	CryptoLocker_rule2
behavioral2/memory/4292-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3688-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023236-13.dat	CryptoLocker_set1
behavioral2/memory/4292-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3688-18-0x0000000000500000-0x000000000050F000-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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4292	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 3688 wrote to memory of 4292	3688	2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe	84
PID 3688 wrote to memory of 4292	3688	2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe	84
PID 3688 wrote to memory of 4292	3688	2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_d253bc16667582f3d0ec8eeb2cce6099_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3688
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4292

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\asih.exe

Filesize
49KB

MD5
e7cc560f3b8ab869a68563c2e9256424

SHA1
0dab8551d7dff06b74256bf83749c8f1a75e7cb9

SHA256
acaeb1377ca1c8572dafc2ae6492cb2f0e1e1c23df4e3dc0573afcac17651c13

SHA512
68d24228beff558586291807084b95f23eee898f853254bf77d5b31807d9ac15f50b3bece3d1f3c0cf2c7d4d8db493587b63c7be5f5c9b680272ef08381016aa

Download Submit
memory/3688-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3688-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3688-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3688-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3688-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4292-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4292-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download