41c2623b0685b6beedc15d2d293c66ab73d3c415040ce304b6dd443bdaa80f63

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
20/02/2024, 06:23

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General

Target

2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe
Size

74KB
MD5

064e38681755cb6c972646efc20ee885
SHA1

07e7f495c24b69996873b29acb3daf990ba36f41
SHA256

41c2623b0685b6beedc15d2d293c66ab73d3c415040ce304b6dd443bdaa80f63
SHA512

07cf9c29d0ea72a867294b67517f7b43a9bcd13361da3b5e87eaef6480ed6ae064460e04d2145866e3ba4b24c5a7b99d2df67fc6378328f6fdf8c647067fb71f
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sQt:X6a+SOtEvwDpjBZYvQd2x

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023207-12.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2380	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 1776 wrote to memory of 2380	1776	2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe	84
PID 1776 wrote to memory of 2380	1776	2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe	84
PID 1776 wrote to memory of 2380	1776	2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_064e38681755cb6c972646efc20ee885_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2380

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
74KB

MD5
a806303a6a9075a618faca5db4bf9827

SHA1
496a86e230b63ec4276b2d308595a5eda1a123d6

SHA256
a66563873e610db3c370a1518853307498861d2953130c7a38020debeadc30c3

SHA512
31be176c3129ee01104555b71642e48d47c9f69a18c57cbd37992122594178e50420f10b49b3afd7750be323bd4495f29dda868767b2da089375abf6ae416ce6

Download Submit
memory/1776-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1776-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1776-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2380-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download