wannacry | 48be6cada9c245e057d2a09ba2ca1d193d4e822d46a7549180c61241106cb934

General

Target

2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Size

5.0MB
MD5

935ae353d2f898a809fdd46a4b53c0ab
SHA1

629ff5884075ff1da7f5cf0b5c9590160724c446
SHA256

48be6cada9c245e057d2a09ba2ca1d193d4e822d46a7549180c61241106cb934
SHA512

d57bdb6fda3d6edd773755b2513c31c246adabf063eaebbe1cfe3b45301dcb9af333018a05605cb319312e5c644be2f2f886b8395a12c3c1c022362e6f355665
SSDEEP

6144:eE9l9ynqIYVTH5DgSgNajldktM0XXrCIagQhMV9qbBLIwYSv3AiiVjAqZfAgbJ3S:eebLgmluCtgQhMbaIuAvVLJAmd3A

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 (3280) 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	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1140	2616	WerFault.exe	84
4688	2616	WerFault.exe	84

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	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3924 wrote to memory of 2616	3924	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe	84
PID 3924 wrote to memory of 2616	3924	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe	84
PID 3924 wrote to memory of 2616	3924	2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3924
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2616
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2616 -s 216
    3⤵
    - Program crash
    PID:1140
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2616 -s 260
    3⤵
    - Program crash
    PID:4688

C:\Users\Admin\AppData\Local\Temp\2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-19_935ae353d2f898a809fdd46a4b53c0ab_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2616 -ip 2616
1⤵
PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2616 -ip 2616
1⤵
PID:3380

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
d96d2b632caa0daeaf3dcf7adde853c5

SHA1
387470e1ef47acdfc8f3d553cadf94f59880346a

SHA256
ca9b1d16046c426c99ab759c7d8c109e3b6b631cbbeb6ae60a78ea21e60bb90d

SHA512
df84732aa82b1edfef67c5de50dec58c5fb25df47906b849928cfa11c301d4a1fc02b6aafd51189c7553e5caabe0143dd07cc3ddc42dfd4a569ff1038fce5524

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Analysis

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