wannacry | a7d156cf11cff5e9c7b357d6d844d3fc8a6dfc9023aa30da3ef677e56850c6a4

General

Target

2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Size

3.6MB
MD5

c96c3f74efa2c50709b7a2b8d6a4ed35
SHA1

a2e3fcf51270c0781e735b1cd5fc864f0dec685b
SHA256

a7d156cf11cff5e9c7b357d6d844d3fc8a6dfc9023aa30da3ef677e56850c6a4
SHA512

8f8909678ea19701f3b7eca844be1765419a7ba7430ed212cb842a550a990bd1003219d2e3ed28c5f0079132a8f58d924d4da41a8704b6a35a1d42ac449fb98e
SSDEEP

24576:4bLguriIfEcQdIVUacMNgef0QeQjG/D8kIqRYoAdNLKzr45EOb4:4npEKUacBVQej/1INsr45Q

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3310) 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
3412	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\IE	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\eee.exe	tasksche.exe
File created	C:\WINDOWS\tasksche.exe	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240632015	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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 3412	4152	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe	88
PID 4152 wrote to memory of 3412	4152	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe	88
PID 4152 wrote to memory of 3412	4152	2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4152
- 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:3412

C:\Users\Admin\AppData\Local\Temp\2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-12_c96c3f74efa2c50709b7a2b8d6a4ed35_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4944

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
9f64f020bc49333b002e345f359bc31f

SHA1
f4c3984caa2fe9ca7da20d7395c768a1ece21474

SHA256
1c1402e830780e428baf1e6915adf839c5ad71f6bbbbde3f0715e852ed4cf538

SHA512
88eb07cdfc36155c19e8c35db6d463c82bdb592c65dd888ab28c6f385723c484f60fc4017a2e224921a4586abe6352fe4513fc1a47757a063dfdfce9b5be2a56

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Analysis

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