wannacry | ef0e79c89cb69a5cc56d396137ca9d817a89bf08cb8d940d94d58a2423c5dbbf

General

Target

2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Size

5.0MB
MD5

4b5b3a6239ff958bbe2e079e8b58fa79
SHA1

485f88b1142030cf91052780a9168c31c0db32c5
SHA256

ef0e79c89cb69a5cc56d396137ca9d817a89bf08cb8d940d94d58a2423c5dbbf
SHA512

1a6da2434266820527b33e9bff54f541c85cf322dfb647da0039d6e2f7ed2e419cbba8b016fd2c95d62638b54799a03010cb1606bdb0c62e0e42ec0b22623bda
SSDEEP

98304:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P5IR8yAVp2H:yDqPe1Cxcxk3ZAEUadyR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3234) 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
2764	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	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_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	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}\WpadDecisionReason = "1"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}\WpadNetworkName = "Network 3"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-55-a7-da-fa-39\WpadDecisionReason = "1"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}\WpadDecisionTime = e0385de4300bdb01	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}\9e-55-a7-da-fa-39	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-55-a7-da-fa-39\WpadDecision = "0"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-55-a7-da-fa-39	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-55-a7-da-fa-39\WpadDecisionTime = e0385de4300bdb01	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{08B4CC32-B740-472A-AE95-DD805D0AA94C}\WpadDecision = "0"	2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_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:2764

C:\Users\Admin\AppData\Local\Temp\2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-20_4b5b3a6239ff958bbe2e079e8b58fa79_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2768

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
6e3f55818db004a5ef6f2ee9f44c84e0

SHA1
76ff043561bd8ca5bd69e14acdabb198093d1b55

SHA256
eea5e42fee349a8133f5231253c52de8fd9a4b948ff2d5cff78b51e571595022

SHA512
9a20bcdc076cc8305807aabdaf37d60580c5f57adcee39402fce1b452f6cc051a81b976fa7d8fa73992d9e1aa3fd1135413d268397a7266dc6d54882fcd93bc9

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