wannacry | fc806101e3f446a9421bf149f04217f252c66eb383eea291300a550291eb27db

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240910-en
resource tags

arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 21:50

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General

Target

d9180a5abf3cbe6d832ca4c20f93fea3_JaffaCakes118.dll
Size

5.0MB
MD5

d9180a5abf3cbe6d832ca4c20f93fea3
SHA1

208b4b343e4c29f3c25190d1741784e69d01b9a2
SHA256

fc806101e3f446a9421bf149f04217f252c66eb383eea291300a550291eb27db
SHA512

be657953a298022114c40a108d1b2cfd6ddce3e2722940b4f89f64eacab274f5a3dfe4848ada548d410f693e7de77a5c1dd63d92e3b905a5f577455276a38c26
SSDEEP

49152:znAQqMSVhnvxJM0H9PAMEcaEau3R8yAH1plAH:TDqVhvxWa9P593R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3208) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
2476	mssecsvc.exe
1504	mssecsvc.exe
2608	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 544	696	rundll32.exe	81
PID 696 wrote to memory of 544	696	rundll32.exe	81
PID 696 wrote to memory of 544	696	rundll32.exe	81
PID 544 wrote to memory of 2476	544	rundll32.exe	84
PID 544 wrote to memory of 2476	544	rundll32.exe	84
PID 544 wrote to memory of 2476	544	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d9180a5abf3cbe6d832ca4c20f93fea3_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:696
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d9180a5abf3cbe6d832ca4c20f93fea3_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:544
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2476
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2608

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e1083614a4dfc9eb13fa15c18cc868ad

SHA1
7756a66162ed78a4cc81a99850c1c0f6e3f91482

SHA256
a32d2f86c7c000229f10c761220785776ee1a059ab9c99a1dabf91f48b9c3ae8

SHA512
bf420b7d37a42e6fae107d963c870c42fb5f59255a06757dc8ed84414603a0ff0b6d0c1c9a1997dd47fd443ff7f2a78a98f31037a78fb3d34820e0dece0cd1ff

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
020ae51f2ca07438aa68c0102b68dd6d

SHA1
c68d41164a9e4d35b3d2f7d5e3e79558f67939de

SHA256
3655f93de2acd6656c7683a082422d5df53aa3730bc9c4d42a8cd06866b2bb8f

SHA512
47a97847bb2c9ec9f23d3867c050193b808a5d0433a35d85c0b8b0bafa09cf16f50723d37a741aaed7eaca0206a42b88712994251aa3427774b6e671053e13a7

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