wannacry | 44533af9de63dd3fac4a9fbba9b6831496b9121eb3ce221145926c3d6b37310e

General

Target

678323b12f8ae74c7bf406efced5f476_JaffaCakes118.dll
Size

5.0MB
MD5

678323b12f8ae74c7bf406efced5f476
SHA1

f9ec0e2e5a679934e18d78f7924cce8f1f324b01
SHA256

44533af9de63dd3fac4a9fbba9b6831496b9121eb3ce221145926c3d6b37310e
SHA512

f6f84783d9965318ae82547bea16289ff63910f8181ab223dc9d9dab45f55f6431c7ae9a6ee46621ee7e545db2be99d2db201a4e94d414acee1e115c4786a3ec
SSDEEP

98304:+DqPoBG1aRxcSUDk36SAEdhWxWa9P593R8yAVp2H:+DqPR1Cxcxk3ZAEFadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3193) 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
2248	mssecsvc.exe
2820	mssecsvc.exe
2920	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

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}\WpadDecisionTime = f07d1ce6f8dcda01	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\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0083000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}\WpadDecisionReason = "1"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-95-48-66-79-a5	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-95-48-66-79-a5\WpadDecisionReason = "1"	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\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}\WpadDecision = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F96BC78A-B766-4F1F-A22B-BCD6A54DACD2}\56-95-48-66-79-a5	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-95-48-66-79-a5\WpadDecisionTime = f07d1ce6f8dcda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\56-95-48-66-79-a5\WpadDecision = "0"	mssecsvc.exe
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 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2468 wrote to memory of 2416	2468	rundll32.exe	29
PID 2416 wrote to memory of 2248	2416	rundll32.exe	30
PID 2416 wrote to memory of 2248	2416	rundll32.exe	30
PID 2416 wrote to memory of 2248	2416	rundll32.exe	30
PID 2416 wrote to memory of 2248	2416	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\678323b12f8ae74c7bf406efced5f476_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\678323b12f8ae74c7bf406efced5f476_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2248
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2920

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2820

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
13ef6033987c39be76b70837347cec3b

SHA1
63287b86bcd9486b67beae844742bae5ae17399e

SHA256
cf810ce50adb1fa79ad76b2bc0d572d11e5896c2b8ca430d286b06d0e7ca379d

SHA512
8cc06baca364ae9e2923938440ab3ffaa3c968b4fd56f9ef000a3177fdf31adbba30f23b9e28bd149181b47ef4c310ac3c49623ac023bb9d479d05905f2abf18

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c3c3cf66c0bf945b6033c6a94f78b2c9

SHA1
c8371fd0b5a9107eda3cdadd08673c17e02e3ea9

SHA256
4276baeb09c9eeecc34530311b806442cba2a9c7d7f2ad2aca3aba1fe8435465

SHA512
5082353dbb52bfad84fb20211b0ca209a6f6bae95d76919378d699049bf9f593188ad0c82fc790725a6b85aa007b158ca9ae4f4b307e34ac7182bed8a14424d9

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Analysis

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