wannacry | d01283df69ece3bd03a5451c3ea7a6482c1c39d53fff49a36621305fad1f1b74

General

Target

c75e04ce201b41356cb3befe228a23df_JaffaCakes118.dll
Size

5.0MB
MD5

c75e04ce201b41356cb3befe228a23df
SHA1

ee8b3a240f9cc1b1e0c891e5ca5242c5ede1d556
SHA256

d01283df69ece3bd03a5451c3ea7a6482c1c39d53fff49a36621305fad1f1b74
SHA512

5a2a6a8ca3b82d47a2c1b114bb35b7faf251cf9e8773956bcc958a9f0da5bca28d84e65822edb44e78d26f68926efa7b73ea5a669125b71bcc5bc4f91d2871cb
SSDEEP

98304:d8qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:d8qPe1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3310) 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
2828	mssecsvc.exe
1716	mssecsvc.exe
2880	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 System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2160 wrote to memory of 2704	2160	rundll32.exe	30
PID 2704 wrote to memory of 2828	2704	rundll32.exe	31
PID 2704 wrote to memory of 2828	2704	rundll32.exe	31
PID 2704 wrote to memory of 2828	2704	rundll32.exe	31
PID 2704 wrote to memory of 2828	2704	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c75e04ce201b41356cb3befe228a23df_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c75e04ce201b41356cb3befe228a23df_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2828
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2880

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
3db4de71d5580d636d53821f24836242

SHA1
d021f13e6913c8df0cf6243cbb1c304ec87cdb3d

SHA256
50b346134a007d3b37cfdb1c351406cda5cdd80e572bca1c0deb84b26ee9ff5a

SHA512
0c0fac8f437ea5cbb7548ff5991f22e4f170f2a1cdfef9c04a4e1fd171f82aaa2f1559861a419aeca011df3ee12037c06b3b742a42bfa490f84214d99ea3fb7b

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit
memory/1716-9-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/1716-16-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2704-6-0x00000000020B0000-0x0000000002722000-memory.dmp

Filesize
6.4MB

Download
memory/2828-7-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2828-15-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download

Analysis

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