wannacry | 1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4

General

Target

1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Size

2.2MB
MD5

b0d1fc4ee4d27bb5636b23972c330570
SHA1

99363bc0504c297ecfe41519d9c75381078cd725
SHA256

1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4
SHA512

04b54ce60b1bf1c59556696905b6ed0586d90422edad94a22eb15005ff10aed60bfbe7392b594c3df682f97d630587c27a0e2e9b0507b914595046a501f3ab46
SSDEEP

49152:QnVEhPbcBVQej/1INRx+TSqTdX1HLQo6SAe:QVOoBhz1aRxcSUDL36SAe

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3153) 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 1 IoCs

pid	Process
1732	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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4992	1732	WerFault.exe	87

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	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 1732	2764	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe	87
PID 2764 wrote to memory of 1732	2764	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe	87
PID 2764 wrote to memory of 1732	2764	1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe	87

C:\Users\Admin\AppData\Local\Temp\1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
"C:\Users\Admin\AppData\Local\Temp\1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2764
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1732
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1732 -s 596
    3⤵
    - Program crash
    PID:4992

C:\Users\Admin\AppData\Local\Temp\1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe
C:\Users\Admin\AppData\Local\Temp\1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1732 -ip 1732
1⤵
PID:760

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

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
b1885b6570ffda8553d5187041249ce4

SHA1
297078006e3f279c85186ca7353ceb882faa3e82

SHA256
96e01bc2b557565e787786b2c6ef7447f4ab5a017db73626e7e1983ff61ed3ea

SHA512
7080faa6a16109246d7665718622674fe237a940836cf00cea4f8aea85f672a8986c451e12e64a03dde599de394008a89a036943aae3febe6505a0eb4f8eb895

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