wannacry | ef53839c12e36eebe0bbfccdbc5b0822907e816644fea8a8df95ac15b28fac2d

General

Target

2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Size

3.6MB
MD5

2e97995020454b56e63c010f2c8e3df5
SHA1

993fda1608f6e3daf02b447a7f975917854c1914
SHA256

ef53839c12e36eebe0bbfccdbc5b0822907e816644fea8a8df95ac15b28fac2d
SHA512

e6e31d0ea1d3adae296be1abeca5816fe674dbbeffb08fffea4155f1fb16a8e7be77f05470343c7f653a5f4976722b3b03bcb47d92b3324feb10b3418affb947
SSDEEP

98304:XDqPoBhi1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:XDqPf1Cxcxk3ZAEUadzR8yc4HI

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3294) 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
2572	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	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}\WpadDecisionReason = "1"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}\WpadDecisionTime = b08c230efe10db01	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-cb-75-c3-f8-2f	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}\WpadNetworkName = "Network 3"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-cb-75-c3-f8-2f\WpadDecisionTime = b08c230efe10db01	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}\WpadDecision = "0"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0D1F8A71-D14E-40E8-B376-28A027BC8C1F}\1a-cb-75-c3-f8-2f	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-cb-75-c3-f8-2f\WpadDecisionReason = "1"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1a-cb-75-c3-f8-2f\WpadDecision = "0"	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2692
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2572

C:\Users\Admin\AppData\Local\Temp\2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_2e97995020454b56e63c010f2c8e3df5_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2668

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
2e4f8ff13941baedbabc987368a1e720

SHA1
29089cba335601e4c4efb1f13c7b417f111efef1

SHA256
1df40962ca22e71f59c7041a72e2e12e203f6db9fb5eb0ea7fb96011be269e25

SHA512
2a12e4b001f475f9d56e399768f5949c8e4b45578160b9cd2287a338281a9b6b60c693deaf6bdb0fa65b9ef90884256b9f7ba583c9e9334686d4537f93f8e2cc

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