wannacry | 6003c4478c9680b8ef3c4d18a02e7a1f66d7cbd0e91221662550c70e5c61a8cb

General

Target

c65708d655d95f6004762683dd7d01e6_JaffaCakes118.dll
Size

5.0MB
MD5

c65708d655d95f6004762683dd7d01e6
SHA1

a50274241a80e2a65ced311e0ecc70a3c624483d
SHA256

6003c4478c9680b8ef3c4d18a02e7a1f66d7cbd0e91221662550c70e5c61a8cb
SHA512

e8b8fe172a60595b709a3cf3b048c91b7ca4d0f5fd052eb352b8521c4e107cb7de2f6c6c6d1ef0fac70c670764613db96b42f55ddb1d61054162e74b12206f72
SSDEEP

49152:SnAQqMSPbcBVQej/66SAHvxJM0H9PAMEcaEau3R8yAH1JlAH:+DqPoBhz66SAPxWa9P593R8yAVJ2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3325) 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
1976	mssecsvc.exe
2088	mssecsvc.exe
2816	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	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 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-c4-7b-0d-b9-d3\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-c4-7b-0d-b9-d3\WpadDecisionTime = c0fa12b911f9da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0037000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}\WpadDecisionTime = c0fa12b911f9da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-c4-7b-0d-b9-d3\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-c4-7b-0d-b9-d3	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{EEBC5584-F88C-49DD-9DCE-EFC6023946F9}\0a-c4-7b-0d-b9-d3	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 676 wrote to memory of 2312	676	rundll32.exe	30
PID 2312 wrote to memory of 1976	2312	rundll32.exe	31
PID 2312 wrote to memory of 1976	2312	rundll32.exe	31
PID 2312 wrote to memory of 1976	2312	rundll32.exe	31
PID 2312 wrote to memory of 1976	2312	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c65708d655d95f6004762683dd7d01e6_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:676
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c65708d655d95f6004762683dd7d01e6_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1976
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2816

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:2088

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

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
fa9aa67c8f54190bc0940e1b1fa9c494

SHA1
ebb40f5804e8bb0c4a933f393c8991bb4775e4ce

SHA256
233ec184a1380c67e7d7a93b594a790161b1aeb9c17cfd7557aed8833568d9c1

SHA512
04c16ae407cda0614c016d70d594e45242c64e6abc18ee9b5b4a9633dfdc6e50050056790d134fe4628d34ac54ca1a416f89c7adf35ff640d08ab849b4b4411e

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
13b7e07aeb45ba68879d75d30728cda5

SHA1
5bb5602d674e468eb0b9cae6ea50b96e274fe6ad

SHA256
af91a284f0ced23df9913969a65cd098ae6c0562e1678234183a90d386ed4334

SHA512
dee0b449290da79a6b6e7b677e9bc329491c94a81ba40bb93ae032f57b6bbcbbc41013a83669d7b6dccb7da227fad419407a89da7e6fb608e4d0c878553240d5

Download Submit

Analysis

Sharing