wannacry | 695e60fde52ae7bf5eb14e06a27675da78649a1e6fc79c9bf1e57fe006973d65

General

Target

0d65e35e3f4c02a1f114caa06febcfb9_JaffaCakes118.dll
Size

5.0MB
MD5

0d65e35e3f4c02a1f114caa06febcfb9
SHA1

18117e82f22d3c97fc375c550182d2ac9ded8301
SHA256

695e60fde52ae7bf5eb14e06a27675da78649a1e6fc79c9bf1e57fe006973d65
SHA512

34f6f6cc672ee4f4a9fc2072cf6376834152778a60fc0409da0f468f77dedc1b1371156246f1afbba184845f43e486e88db9135faffcc50efd5115cee52ae80b
SSDEEP

49152:SnAQqMSPbcBVQej4INRx+TSqTdbxJM0He:+DqPoBh0aRxcSU9xWae

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
2684	mssecsvc.exe
2180	mssecsvc.exe
2700	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 (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\ZoneMap\	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-fd-43-05-e3-85	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\ZoneMap\UNCAsIntranet = "0"	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\History\CachePrefix = "Visited:"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0046000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-fd-43-05-e3-85\WpadDecisionTime = d07c581c439cda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-fd-43-05-e3-85\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}\WpadDecisionTime = d07c581c439cda01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}\0a-fd-43-05-e3-85	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
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3F6778D6-6084-4C66-927A-DC2A42130F35}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0a-fd-43-05-e3-85\WpadDecisionReason = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2372 wrote to memory of 2544	2372	rundll32.exe	28
PID 2544 wrote to memory of 2684	2544	rundll32.exe	29
PID 2544 wrote to memory of 2684	2544	rundll32.exe	29
PID 2544 wrote to memory of 2684	2544	rundll32.exe	29
PID 2544 wrote to memory of 2684	2544	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d65e35e3f4c02a1f114caa06febcfb9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0d65e35e3f4c02a1f114caa06febcfb9_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2684
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2700

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:2180

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

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5f11269f8fce0998fc504ba2de6acc57

SHA1
07c2f0c5d090c0209ba2b6743952bb28ad1cd62e

SHA256
5773a2a189ed9ab49cca56f89e041d7aefad67cb0697cae0622402ee7cc67f76

SHA512
e8641503f3c31e75d9ff128baf978743af4a4809e45f0d2e8b39014769ac8ba3b5dda3af5ad7df3fa50afe88c9d16b12cee3487df66e4f9a00fd22f67dc97a2e

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c2d664c6898550c21f42a1c2ee6d514c

SHA1
e76b59ac51d263cb346aa0eba42022f1e2746a41

SHA256
518c5d68c5546c91f4dc37f1589b9c25a39e1e1284af18bc881f8375ca23daad

SHA512
4f44755eedeffbff034386f0ddc717169429d0d64b9c9ab912ca0271d42bb889ef2cbe8f3504bda1895be31506d04a65ac67f7dbacd6e045fb84a8c58051b1ba

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Analysis

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