wannacry | c0057fd3141966017014beb71fa2e31d84d3ddd2a9f20e3e6ee26df8165a531f

Analysis

max time kernel
92s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 11:53

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General

Target

tasksche.exe
Size

3.4MB
MD5

a27cfbfad728fa5ec8e701a6f93cab26
SHA1

deba582c9c8f059590132395f987c2acf54e7a7f
SHA256

c0057fd3141966017014beb71fa2e31d84d3ddd2a9f20e3e6ee26df8165a531f
SHA512

8c095ccb3367903bc5498d0222ee537ef2bbd4f4204fe9a9a9babe2426d8a377240a15892e248e6e252bf3b229eecc8b1c960136988bf3398941e20a1e542b5d
SSDEEP

768:sCo1dAqfsxpWQUJIMsuEfVQuvPOpai+d03Baho9S4AJKqBz8MZVxPDMO9nq8t2Tf:Bo1Jfsh3MKNQugai++N9S4A3v9q/j

Score

10^/10

wannacry defense_evasion discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
396	icacls.exe

File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 4852	4692	tasksche.exe	83
PID 4692 wrote to memory of 4852	4692	tasksche.exe	83
PID 4692 wrote to memory of 4852	4692	tasksche.exe	83
PID 4692 wrote to memory of 396	4692	tasksche.exe	84
PID 4692 wrote to memory of 396	4692	tasksche.exe	84
PID 4692 wrote to memory of 396	4692	tasksche.exe	84

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4852	attrib.exe

C:\Users\Admin\AppData\Local\Temp\tasksche.exe
"C:\Users\Admin\AppData\Local\Temp\tasksche.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4692
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:4852
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  - System Location Discovery: System Language Discovery
  PID:396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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