wannacry | 1dda7db0c3bc58f1a2bc67b31cb95ad891efe4eef5c6847269cbaea1142280b4

General

Target

2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Size

2.2MB
MD5

dcfa2d9692a946088fd4020314f51e9d
SHA1

2f35b64a0290ce637d8d69e805cfafeb033eca60
SHA256

1dda7db0c3bc58f1a2bc67b31cb95ad891efe4eef5c6847269cbaea1142280b4
SHA512

707920b2148f3857605bfc66457c9fb912fd6282ebb1c640f069e0944a3e720ee4606097bae7dce8a10b3d6d383c452d077a3ce6151fc535ac62d7318253a78f
SSDEEP

49152:QnOQej31sNRx+TSqTdX1HkQo6SAARdhnvn:QKT1+RxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3339) 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
2076	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_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2216	2076	WerFault.exe	87
1288	2076	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	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.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\Cookies\CachePrefix = "Cookie:"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 2076	4912	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	87
PID 4912 wrote to memory of 2076	4912	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	87
PID 4912 wrote to memory of 2076	4912	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 216
    3⤵
    - Program crash
    PID:2216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 220
    3⤵
    - Program crash
    PID:1288

C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2076 -ip 2076
1⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2076 -ip 2076
1⤵
PID:2088

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
54fed24cfd24c7e3703c770d23f9a4da

SHA1
8c405ed899110e52c579085f869dab804f8d1e2d

SHA256
197ba84cb91f98f6ff5927f839948f963b869ab8cf4c66a0961c95ef114f0fe6

SHA512
d6b1132bee7a30d8f7e72efd1a856e1a614718354d92da1902226ee1133c49b1e8f68e5f71c60436eb77f565a6d83f27a21f07c198474cd8acd3d7b13015e43d

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Analysis

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