wannacry | 9e714d4d43e214c28c4ad49877d849e37ac06ed3095d32ff682cbde7c15c4e9e

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 15:56

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General

Target

e979124c81143e8fb75bd63e7b07df00_JaffaCakes118.dll
Size

5.0MB
MD5

e979124c81143e8fb75bd63e7b07df00
SHA1

54c94581e0d1c0d082a10c3d6169ebec7155efea
SHA256

9e714d4d43e214c28c4ad49877d849e37ac06ed3095d32ff682cbde7c15c4e9e
SHA512

40342b1f80e542f490ec42f4face1ebff2c2e1c94aac55f939c2b07026e5947f343487e05ea0bbc68d1d420a3a7f0b14e767b308272fb341af4e9040d06cbf93
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0Q4kqAH1pNZtA0p+9XEk:SnAQqMSPbcBVQyAH1plAH

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3291) 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
3484	mssecsvc.exe
1640	mssecsvc.exe
932	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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 3848	1220	rundll32.exe	82
PID 1220 wrote to memory of 3848	1220	rundll32.exe	82
PID 1220 wrote to memory of 3848	1220	rundll32.exe	82
PID 3848 wrote to memory of 3484	3848	rundll32.exe	83
PID 3848 wrote to memory of 3484	3848	rundll32.exe	83
PID 3848 wrote to memory of 3484	3848	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e979124c81143e8fb75bd63e7b07df00_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e979124c81143e8fb75bd63e7b07df00_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3484
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:932

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:1640

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
6fa3a464bd9df87c164a7650619634ba

SHA1
0c363ba86938102fbb55f8f0f1f2ad8a1953cc5a

SHA256
4049d0b5d878855fabc4338cf8f6b8a5f7604d249c970df5b4552186601f1f5d

SHA512
379512b5ceb023b78730fd3f8245413d990e4472861d8910a08baf73e291988fbb15f5d3135ba291f81b263d41cb6c0543b14c124967d4a6fc3ce2b0365f74ec

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a1660f6e4fe9388cbb251ca4d6b352e6

SHA1
db0686ae7886b54983fc86f876b015c59deaa0b3

SHA256
7902974c078579c6e8d28694cc6026854d53fedfdc34dac83b443089529eea4c

SHA512
6c432cf003dd1d04897a610f38c6b20f4acf212378803becf70dc0c3ad3197424d5fd7e17f81eeb7941f35a3e3207f3daccd13371f8d715a6277e5343471854b

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