wannacry | 9f1c2fb39d7ce553e82136d03ab32a44959b3eae90636809d8a6e1d152a7dfdf

General

Target

2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Size

5.0MB
MD5

43cd2920adc427903e5bf41417b00c46
SHA1

9493b0094207ac877e1f6d650d344309a97f4b39
SHA256

9f1c2fb39d7ce553e82136d03ab32a44959b3eae90636809d8a6e1d152a7dfdf
SHA512

e9b554171d58bfca64b8e09ec3ff9f3fb9122432910e3ccc151229dd85fc6c346eb4763351fd4e8abd71fd83d8410e3eef5970236176fb75c10cb40cb151d7dd
SSDEEP

98304:yDqPoBhz1aRxcSUDkEQv9Snm1tnr7DRbxyE1C:yDqPe1CxcxkEQv9Snm1tnr7DRbxyE1C

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3292) 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
2728	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	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-11-16_43cd2920adc427903e5bf41417b00c46_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	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}\WpadDecision = "0"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}\WpadDecisionReason = "1"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}\52-24-85-1a-77-7a	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-24-85-1a-77-7a\WpadDecisionReason = "1"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}\WpadDecisionTime = 0032a15d3c38db01	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-24-85-1a-77-7a	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-24-85-1a-77-7a\WpadDecisionTime = 0032a15d3c38db01	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{26AB04F6-76D5-4F31-BB5A-206374F87812}\WpadNetworkName = "Network 3"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\52-24-85-1a-77-7a\WpadDecision = "0"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2272
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2728

C:\Users\Admin\AppData\Local\Temp\2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-11-16_43cd2920adc427903e5bf41417b00c46_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1516

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
870785dd771aca30d471463a39fe9fd6

SHA1
761e63ef82455e69040a6c818c4b862be883b1a2

SHA256
e633a98681e21bfaba8be3a12aa2f98d67304a312e824b01939fc6979c6aae28

SHA512
aa2da48179dfe563007f7bcaaea145779c9538e6ea33d03f6eeb993fb226af5fea11e19c089b9b1448064c2369ad1bcb329a44147815759ae9ead66e4edf29cd

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