wannacry | 4017babecb23b7060faed19307db15c875b5f95973281c787a466f818096bd6a

General

Target

fa95071e3dd2c52b436bae121077960b_JaffaCakes118.dll
Size

5.0MB
MD5

fa95071e3dd2c52b436bae121077960b
SHA1

8d0f2f7298d52b2689db02b1433d50e9bd5da8d2
SHA256

4017babecb23b7060faed19307db15c875b5f95973281c787a466f818096bd6a
SHA512

66c61dda5063ebd98ae27f1eb5752f40e20907e56f62ff73c4d7f38c001a402bb70f94df15d15e73f11e76f6c30945291cf7d4853ad75cb736b37aff43fcdd41
SSDEEP

98304:f8qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:f8qPe1Cxcxk3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3314) 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
2276	mssecsvc.exe
2264	mssecsvc.exe
2936	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\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	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 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1636 wrote to memory of 1980	1636	rundll32.exe	28
PID 1980 wrote to memory of 2276	1980	rundll32.exe	29
PID 1980 wrote to memory of 2276	1980	rundll32.exe	29
PID 1980 wrote to memory of 2276	1980	rundll32.exe	29
PID 1980 wrote to memory of 2276	1980	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa95071e3dd2c52b436bae121077960b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fa95071e3dd2c52b436bae121077960b_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2276
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2936

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:2264

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
f03a2ed8c86832501522424fa91a023e

SHA1
6350fc8fa4d3e38c845a45b5d2e25d2180ceb150

SHA256
7f1d066eed6a069f7190f069bb26526ca64c9f0dfed8026552a024eabf87e655

SHA512
00595f458a1c00b108459fe5cc8ef277f8af60e4dffc7e71f266f224366b8ea13ac35b81f8294be48c65e663bec4994e7394400e20274f5b063852866f0077a2

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7f7ccaa16fb15eb1c7399d422f8363e8

SHA1
bd44d0ab543bf814d93b719c24e90d8dd7111234

SHA256
2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd

SHA512
83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7

Download Submit
memory/1980-6-0x00000000022C0000-0x0000000002932000-memory.dmp

Filesize
6.4MB

Download
memory/1980-16-0x00000000022C0000-0x0000000002932000-memory.dmp

Filesize
6.4MB

Download
memory/2264-11-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2264-17-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2276-7-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2276-15-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download

Analysis

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