4e63c60d56e018d1e4ba0c7cab9dbf770e277233b7bf4424b190a81acb2fbf93

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2024 18:31

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General

Target

2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe
Size

46KB
MD5

f9e6cc818957d55e6d56a8134b1d65fa
SHA1

f22141017f4878f26aeead42b64a8153b76d0da9
SHA256

4e63c60d56e018d1e4ba0c7cab9dbf770e277233b7bf4424b190a81acb2fbf93
SHA512

7481cdcfb2fefc25e808e6dd2d674d933a9ee868ad4c70f46dcea3f30ba9d35aeec15818327a368314e217528aca0ab31cc2854350ecba394a54b92aefea57b2
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6ddV:bgGYcA/53GAA6y37Q6ddV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fc-12.dat	CryptoLocker_rule2

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3892	hasfj.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 3544 wrote to memory of 3892	3544	2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe	88
PID 3544 wrote to memory of 3892	3544	2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe	88
PID 3544 wrote to memory of 3892	3544	2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_f9e6cc818957d55e6d56a8134b1d65fa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3544
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3892

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\hasfj.exe

Filesize
46KB

MD5
b8d03c70d7b40c334826b6120cc4973a

SHA1
27fe6d68d4c0c8566a9169e47d072487b2fe8846

SHA256
53ecdf6c8dcb01aac49cd99b06f5747aab41c1ac975053fa9b79872da78264d6

SHA512
958a91e2696e4c07d02fe0b4e1dcc389226e868b33aa2d6ce92861bc735fe9d124e85b507baf78e121a2faa76a180dcb1b7856906e8952a9a6292d65eaa8ede6

Download Submit
memory/3544-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3544-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3544-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3892-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/3892-21-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download