wannacry | 54d4b7ac7bafcf657cceb0ba8231d287065a1da82f9cc8dbf4077be950bf3d8e

General

Target

106e21fb736cb4e7a18a1746ef18e03f_JaffaCakes118.dll
Size

5.0MB
MD5

106e21fb736cb4e7a18a1746ef18e03f
SHA1

77a6da4aba3f6f0f8da2d5a5d646d295ca0fb088
SHA256

54d4b7ac7bafcf657cceb0ba8231d287065a1da82f9cc8dbf4077be950bf3d8e
SHA512

0056a56bb4a95743232034ea6db0fe692c43751c4854b1695cf82989be82c987e64fa48448cc07516409f3e50c0ae9c0b6ccefb37b504cc3f7a05334a5f6e7cb
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQ:+DqPoBhz1aRxcSUDk

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2660) 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
2436	mssecsvc.exe
2744	mssecsvc.exe
2564	tasksche.exe

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

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
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\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadNetworkName = "Network 3"	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 = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0031000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\7e-13-bd-1f-4c-7f	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\Wpad\7e-13-bd-1f-4c-7f\WpadDecision = "0"	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\ProxyEnable = "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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecisionTime = b00c473771c7da01	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{9A29B2ED-1562-4373-9DEC-E6F33554AD41}\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\7e-13-bd-1f-4c-7f\WpadDecisionTime = b00c473771c7da01	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

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 1988 wrote to memory of 2668	1988	rundll32.exe	28
PID 2668 wrote to memory of 2436	2668	rundll32.exe	29
PID 2668 wrote to memory of 2436	2668	rundll32.exe	29
PID 2668 wrote to memory of 2436	2668	rundll32.exe	29
PID 2668 wrote to memory of 2436	2668	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\106e21fb736cb4e7a18a1746ef18e03f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\106e21fb736cb4e7a18a1746ef18e03f_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2436
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2564

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:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
67ffa51c2157f840f4fe4d538058826d

SHA1
e7f1ecb323e206be4c269eddf3596e6e054a9125

SHA256
fb90b179d1ae26042b9584898e46a5ba2ebdd499db8ba7ba3f45fedd9e2d8e94

SHA512
6ca37faab29096d2c755aad3d06ca0a4428716183cba318651c5e07ddb490644a30cb0b619f09ceebad0caa731c6fd264df0bedebed71f509de8014f03cd2218

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c255f33f14e53ec5f78187627f89d99e

SHA1
054e68bd5e2f06437064c01545f92809bd76da9f

SHA256
dfffdf15a902fb5968f3476edd59711e82232d73266c6fec3accada1e59008be

SHA512
93d5c83889b80f6add3c46bf86f02eda7c3c8c6f8d1aa05600e04e5609c166242bbfbbe32a09592c36dc6c7868bd81ad36cef9dd7ec4abdf04223ec8aa179ba3

Download Submit

Analysis

Sharing