wannacry | 2d0110b8b554e16e100370ce8631fa35acc15b190cb12b39b381d139e0b84331

General

Target

2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Size

2.2MB
MD5

d69ea2c541057f63299fb4117d60cae5
SHA1

86150ed8fc174b0249de4b8fc323cc4c0c16a9ec
SHA256

2d0110b8b554e16e100370ce8631fa35acc15b190cb12b39b381d139e0b84331
SHA512

fbf1d2329ecd9f48a85e987c1a3b3ab2b3a14c4b1fbeba442f226d9c44aa490ce39a4f5b2fb800afa8b3c841c2e87c84fc81e881681ec002a7f8841fd1d048dc
SSDEEP

24576:QbLguriIfEcQdIvrYbcMNgef0QeQjG3D8kIqRYEAdNLKz6626M+AdhAdmvn:QnpEjbcBVQej31sNRx+Adhnvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3301) 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
3408	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	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240621406	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	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 3408	1028	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe	83
PID 1028 wrote to memory of 3408	1028	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe	83
PID 1028 wrote to memory of 3408	1028	2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1028
- 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:3408

C:\Users\Admin\AppData\Local\Temp\2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_d69ea2c541057f63299fb4117d60cae5_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4772

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
9bf153a7e5294e20f5cbc6b836a2618c

SHA1
e2523bca452e0319fd5136eefe52a4e893297b76

SHA256
c19023fa4559931a279a2dd1fec3bcfa960aaf68b9cefaee21fa4ec742180b21

SHA512
c3dae447ee1ea08dee4d02d3ea0613280b36c6c5f1e7eb7b786f90efcaacb39d025512965bf9d11643e421f69bd7286574866de2901ead9229ad07a007a2150c

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Analysis

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