wannacry | c1f2834dcf949af6416999012e196eb8c3eb7111753b2ea853f6541ec670ff35

General

Target

2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Size

2.2MB
MD5

1226b992bebca726a2d3451dc03563d8
SHA1

860c076bede9d991e272e24f7137ababba08f16c
SHA256

c1f2834dcf949af6416999012e196eb8c3eb7111753b2ea853f6541ec670ff35
SHA512

9189089eba830c3c08d09c1d34ca86ff60b7fc0fced77466caac4c393425b283b1e28cadc3db8778aac1f9d26380d348c9aff243b2fec4b8f0c9a200ba9a0774
SSDEEP

24576:QbLguriIfEcQdIVUgYbcMNgef0zdd1lZ3cJRO1/N38LQZtgU64rT:QnpEKUlbcBV5lrQXUV

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3230) 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
2616	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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240618375	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

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	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 2616	5112	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe	88
PID 5112 wrote to memory of 2616	5112	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe	88
PID 5112 wrote to memory of 2616	5112	2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5112
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:2616

C:\Users\Admin\AppData\Local\Temp\2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-12_1226b992bebca726a2d3451dc03563d8_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4524

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
797be1094fa2a6d1d5ba110df0140885

SHA1
527fa7afb0a11c237bd88cf8f7a60d9cfbf141d5

SHA256
edf9cfa02eeb242e3639d2ab81c5a717a3044ba963a27444b72f7e7ccdd1e260

SHA512
74cc81bd0d2ff142268191797c953714c2da8bafc0698a7e1db78df3efd12cf526e51bf462cd9e000520755988b0b791eee0d02fd9bbb6ac80044ea62a5ec769

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