wannacry | c6d7ac6498c44d7e59098f4de0d453c78755b1407fb84ded19fdca4ee0d7fead

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2024 15:54

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General

Target

e2d99de08e004992f0659227d52e8bba_JaffaCakes118.dll
Size

5.0MB
MD5

e2d99de08e004992f0659227d52e8bba
SHA1

e6d49025832515d78a701c502ea2585cd78abee9
SHA256

c6d7ac6498c44d7e59098f4de0d453c78755b1407fb84ded19fdca4ee0d7fead
SHA512

7a807c8bf67f0ebef9cfe76eb7ccde8a8a567065aa954c187c5db915edd94eca5175b797de20ea2e203093973a0da572932e7ff4ddfb707ddbbb18b509089d2d
SSDEEP

49152:znAQqMSPbcBVQej/1INyjZD0ZqL3UKEf57cPUxv2xZ0TLPtfOja:TDqPoBhz1aQrFtUxuxZwLFGja

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3153) 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
5052	mssecsvc.exe
4348	mssecsvc.exe
2380	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 2296 wrote to memory of 5044	2296	rundll32.exe	82
PID 2296 wrote to memory of 5044	2296	rundll32.exe	82
PID 2296 wrote to memory of 5044	2296	rundll32.exe	82
PID 5044 wrote to memory of 5052	5044	rundll32.exe	83
PID 5044 wrote to memory of 5052	5044	rundll32.exe	83
PID 5044 wrote to memory of 5052	5044	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2d99de08e004992f0659227d52e8bba_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2d99de08e004992f0659227d52e8bba_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5044
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:5052
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2380

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:4348

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
9bccbfa2902e42abcb599063944112ed

SHA1
7f21ade93acf06c8117bb8811e8cf02b42805f15

SHA256
2fc4ee434d745cf60f7d76d6ffe0911ddeade4556b0ebf2bb372f9f42728b60e

SHA512
e18bf6947176a058d508cc1ce3d376dc98097d0da9d33e13e2f20af91c1287ebdbdeb3584da06ede6a46d1eaa1ef15dab41d5c0cd6b8440906727f2fed197ad1

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
b3466af4bedeb93affd2374eae0bb2c5

SHA1
c4f785738eff7fbc880005d4c66bdd8941fca5a9

SHA256
dc6dc7fd391fd2c234ba5a0a82630852b366552ed3423dba04396fe225443c47

SHA512
1c982cebba5fe5f832a0cd1b7a6a0aeff488beaeae3c9cf767d33961697959783d2162268088a4eecb003f7263d06ddfc6b0b2047fcf7918ca9cdf1c9a501a9d

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