wannacry | 1c12abd97c65da56d2654055646fb08b236c6dea7aa4d610c21482c1a7e45ef4

General

Target

b0d1fc4ee4d27bb5636b23972c330570N.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 (1782) 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
1676	tasksche.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	b0d1fc4ee4d27bb5636b23972c330570N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	b0d1fc4ee4d27bb5636b23972c330570N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	b0d1fc4ee4d27bb5636b23972c330570N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	b0d1fc4ee4d27bb5636b23972c330570N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	b0d1fc4ee4d27bb5636b23972c330570N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1048	1676	WerFault.exe	95

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	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	b0d1fc4ee4d27bb5636b23972c330570N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	b0d1fc4ee4d27bb5636b23972c330570N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	b0d1fc4ee4d27bb5636b23972c330570N.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1676	5048	b0d1fc4ee4d27bb5636b23972c330570N.exe	95
PID 5048 wrote to memory of 1676	5048	b0d1fc4ee4d27bb5636b23972c330570N.exe	95
PID 5048 wrote to memory of 1676	5048	b0d1fc4ee4d27bb5636b23972c330570N.exe	95

C:\Users\Admin\AppData\Local\Temp\b0d1fc4ee4d27bb5636b23972c330570N.exe
"C:\Users\Admin\AppData\Local\Temp\b0d1fc4ee4d27bb5636b23972c330570N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5048
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1676
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1676 -s 596
    3⤵
    - Program crash
    PID:1048

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3820,i,2904906934812054273,11716976550456127484,262144 --variations-seed-version --mojo-platform-channel-handle=1424 /prefetch:8
1⤵
PID:2912

C:\Users\Admin\AppData\Local\Temp\b0d1fc4ee4d27bb5636b23972c330570N.exe
C:\Users\Admin\AppData\Local\Temp\b0d1fc4ee4d27bb5636b23972c330570N.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 1676 -ip 1676
1⤵
PID:4352

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

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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Analysis

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