7bfb3b9e31909b67944ca94005fe468099ea3eb8244621b3ae43cb8caaff1a6a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 15:01

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General

Target

2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe
Size

39KB
MD5

122db273b49b4c08bccdf1d7da13840e
SHA1

4c68afd459510417b0ed284b906a0fe482345fdf
SHA256

7bfb3b9e31909b67944ca94005fe468099ea3eb8244621b3ae43cb8caaff1a6a
SHA512

9afab14573a626362d4d3ceff42ca69a1280856ffff93cc28d9413ba1956093665aaeffdd0f571d815cc25a601ace3179b637b193c0560db9cdad5662bbb6a73
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfW:X6QFElP6n+gJQMOtEvwDpjBsYK6W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023143-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023143-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	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 1452 wrote to memory of 2740	1452	2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe	85
PID 1452 wrote to memory of 2740	1452	2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe	85
PID 1452 wrote to memory of 2740	1452	2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_122db273b49b4c08bccdf1d7da13840e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1452
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2740

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
39KB

MD5
a984d1373c8cabbbbde43532de2dc7e6

SHA1
b42aa87ba8919006d38b7ebab79fa13c48e5fe5f

SHA256
19425b38a54c4bac9dfb3b4a4465e24c54b9a8f508caeb8fe2221246a04d12ed

SHA512
f5e33e7d642ff49fcd9e8e6ce9d697aeb91c6c86b4487a562099a9c2f3904078111f01b870ee4e76233154183de8c3de78aa15eff78d27255c6b7db8283f1236

Download Submit
memory/1452-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1452-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1452-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2740-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2740-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download