wannacry | 1ab0b6dd095a065d8433ca65eef7af9402a442bc432ce4b7d167343e935beb82

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
27-09-2024 10:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

fa3b6e257e61791990eb3c99a597ac37_JaffaCakes118.dll
Size

5.0MB
MD5

fa3b6e257e61791990eb3c99a597ac37
SHA1

c1c1fc66810fa18f44c56af4c581b1b6d4b5e1f1
SHA256

1ab0b6dd095a065d8433ca65eef7af9402a442bc432ce4b7d167343e935beb82
SHA512

82c12a7633d51cc7f1b3e6dbbdb3e7496103daa69f4ddcbf2325996943f509513102f18a81b197285cf811c181c48f0158cd5127d2aa0ec36d8dffc8622de1f9
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhC:+DqPoBhz1aRxcSUDk36SAEdhC

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3172) 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
4656	mssecsvc.exe
2916	mssecsvc.exe
1780	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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.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 1880 wrote to memory of 3068	1880	rundll32.exe	82
PID 1880 wrote to memory of 3068	1880	rundll32.exe	82
PID 1880 wrote to memory of 3068	1880	rundll32.exe	82
PID 3068 wrote to memory of 4656	3068	rundll32.exe	83
PID 3068 wrote to memory of 4656	3068	rundll32.exe	83
PID 3068 wrote to memory of 4656	3068	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa3b6e257e61791990eb3c99a597ac37_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa3b6e257e61791990eb3c99a597ac37_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3068
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4656
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1780

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:2916

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
2d23c49a0329ff5605c095f8a6200b75

SHA1
e38ee66e5a30e0784aa1e15c29e1e109e7245fa4

SHA256
413f3d39554758acc607bc7e3b4c561697a89fb10deec4a8bd5434b275128d14

SHA512
d5355b0b96cbcc347aadcb61a0b907d1729a3d57648ac453e337552b301f5ee564bdcdd8d7a8cff7d7a64c1c0b4252a44f597815151d2f45fbf2eeff391d8e97

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
e917420a1bb05be8eae636b717137449

SHA1
63b58da2db7450760933ebc1c28b1722b5a9f8f2

SHA256
90c1cc5cf1317e1b04a3fee6a1a9c14a3cb77317e63d661bc4f0b27d4943d1a9

SHA512
dadb131829bb663b8e516ea0b78cbc6026a6500165e2908a7d7265e964b206ac864f9704c40c388fa365cfa453987e57ba0c2c99ed5c992602ffe6d324be9aa5

Download Submit