wannacry | 1266653ad725235eeba63844896b739e51d6ddf7d2dc659db17a684036af0ff3

General

Target

2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Size

2.2MB
MD5

91955908d09c6f83824fc68d561d3347
SHA1

d0e88ca35e881e911ad9bdf95a3a35ed7dce6c8e
SHA256

1266653ad725235eeba63844896b739e51d6ddf7d2dc659db17a684036af0ff3
SHA512

1c9a898a6ee31308ed4da07f7a3ff6590abdade62b3c0cc8f78168deaa6e76bededbb63ae8c12211025bb7b0e77156c3a8350ea6efac43c4e7a64832c49d9e2f
SSDEEP

49152:Qn8EKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:Q8yfBhz1aRxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3252) 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
2744	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 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\T18YASK0.txt	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\T18YASK0.txt	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\1QZF3T4O.txt	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\1QZF3T4O.txt	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2836	2744	WerFault.exe	31

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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f005f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}\WpadDecisionTime = 50dbfe0cbf09db01	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}\WpadNetworkName = "Network 2"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}\WpadDecision = "0"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-a5-44-dd-19-be	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}\c6-a5-44-dd-19-be	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-a5-44-dd-19-be\WpadDecisionReason = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{266295FA-137C-4D95-BA8B-C4E80FC57F8A}\WpadDecisionReason = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-a5-44-dd-19-be\WpadDecision = "0"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-a5-44-dd-19-be\WpadDecisionTime = 50dbfe0cbf09db01	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2860 wrote to memory of 2744	2860	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	31
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32
PID 2744 wrote to memory of 2836	2744	tasksche.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 224
    3⤵
    - Program crash
    PID:2836

C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2932

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
2.0MB

MD5
b8889540b0cc31904270b4c2abd28281

SHA1
01f1ef068225fc3f68dd34ca37891d4174595a2a

SHA256
d707154613a5ffa6717afb3d163ced9c58dbb5d688656da93778f27018408e5d

SHA512
33ad7fd853c6ecf292f5079f4241b68d3f803fdd0b6d5c69da216bb576652330ce3a57d7e22e15676a3a198a8c6722d2ee262f2b66f58c4e4504da1922037a79

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