wannacry | ebbe0c2289491c8edfa59ad30f303849ab516219bdb1cceb8d6b9d8477925b0e

General

Target

2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Size

5.0MB
MD5

c2b1a52cdfaeccbba928e9da903bbe28
SHA1

e1299cbb6f1d90f11b1ac5cb963b834e96a375d7
SHA256

ebbe0c2289491c8edfa59ad30f303849ab516219bdb1cceb8d6b9d8477925b0e
SHA512

15fd0a6089ac5c0fe745275c186f99cb5fe5028c68d739c80309e9604b389f8cb3c0cc57e65f07a002202d32174afa75a65f371ee351085e57954099fd959f73
SSDEEP

98304:yp/RxcSUZk36SAEdhvxWa9P593R8yAVp2H:y7xc7k3ZAEUadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3165) 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
3608	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	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
436	3608	WerFault.exe	90

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	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_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	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 3608	1772	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe	90
PID 1772 wrote to memory of 3608	1772	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe	90
PID 1772 wrote to memory of 3608	1772	2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1772
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3608
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3608 -s 220
    3⤵
    - Program crash
    PID:436

C:\Users\Admin\AppData\Local\Temp\2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-30_c2b1a52cdfaeccbba928e9da903bbe28_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3608 -ip 3608
1⤵
PID:4276

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4404,i,10597648459838880772,16562651767759956329,262144 --variations-seed-version --mojo-platform-channel-handle=4396 /prefetch:8
1⤵
PID:1636

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
334eff09b88812f86a1da0e40d5cc611

SHA1
2d2863e96a763d74bcd4f9e105d5e4420c3e4ccf

SHA256
73a96c23c79cfdea740dc9c235f537b25091b4d30ce787467a58f9246a5cb4a2

SHA512
97bdc6732e8298f344da80142f07b9b22bbbfd6f863930e249c8bffbfd8cb267d6d4c0ee42208e20203d1aa7c92354390b6ffdccfeccfbd7a07aa4323b5af593

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