wannacry | 33ba228218c72190177f4cf91d8f0bb54b787f5d0b88f0145b90224a0cbd64fe

General

Target

2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Size

2.2MB
MD5

df6e782ef7a6ee2bd3c553bef4eb6ef6
SHA1

11613289ef9fa452b30367e14bfe5ca779f0c360
SHA256

33ba228218c72190177f4cf91d8f0bb54b787f5d0b88f0145b90224a0cbd64fe
SHA512

2b4714a222144d0eb48d1734323375d88f1cd84e08be83fa141db8cd37d744ee0fe96f145535d415257c3a5635dd891ae183adce6d3e009243eff3de3817870e
SSDEEP

24576:QbLgurikfEcQdhirYbcMNgef0QeQjG/D8pdhAd:QnVEhPbcBVQej/Mdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3145) 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
1660	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	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4948	1660	WerFault.exe	87

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	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 1660	3288	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe	87
PID 3288 wrote to memory of 1660	3288	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe	87
PID 3288 wrote to memory of 1660	3288	2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3288
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1660
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 596
    3⤵
    - Program crash
    PID:4948

C:\Users\Admin\AppData\Local\Temp\2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-12_df6e782ef7a6ee2bd3c553bef4eb6ef6_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1660 -ip 1660
1⤵
PID:112

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
faf780c7b2535b7537187852314a2258

SHA1
d1c9bf1aa3c04e364198a9510663aef3a822349e

SHA256
f9104411be846a760133af6a8830676b0571b0e865da717ff14bb0608a229c42

SHA512
94ffe3240750f7061359c861aaac75004a0ceef282c0f2c1234654d8f6d4dbd92f96c87e65cf716a678d9891a051a2409c739a4fd330b7536b917f76c2dd6a2a

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