wannacry | 2961ee1f36dca50ab46a87ee3ec3702d5aaa38b8ad60921662d42d26d29a49a7

General

Target

2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Size

5.0MB
MD5

bb1c823feda9e01efef2fd426b47cb67
SHA1

390768c8f83fcaf981cba0c9ad37226224d08ad0
SHA256

2961ee1f36dca50ab46a87ee3ec3702d5aaa38b8ad60921662d42d26d29a49a7
SHA512

411e551c77a91096c4227a9abeb5b6b9fa98f7edcf052b414c11056b91f4cbf860674077ac6dcb503a0f2d5321fa8244a6089cc4794ebd902dfac884615741dc
SSDEEP

24576:QbLguriIfEcQdIVUacMNgef0QeQjG/D8kIqRYoAdNLKz6626br2q+fwK4IvZLLJw:QnpEKUacBVQej/1INRAu

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 (3322) 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
2436	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 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\WUMY468T.txt	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\WUMY468T.txt	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\72WI5XJ5.txt	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\72WI5XJ5.txt	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259466962	tasksche.exe
File created	C:\Windows\eee.exe	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	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0126000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}\WpadDecisionReason = "1"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}\WpadDecisionTime = a0db77090765db01	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}\WpadDecision = "0"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}\16-8c-4a-dc-d9-a2	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-4a-dc-d9-a2\WpadDecisionTime = a0db77090765db01	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-4a-dc-d9-a2\WpadDecision = "0"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{72D47668-632F-4D2D-B454-B79DA9C0546B}\WpadNetworkName = "Network 3"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-4a-dc-d9-a2	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-8c-4a-dc-d9-a2\WpadDecisionReason = "1"	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2436	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31
PID 2432 wrote to memory of 2436	2432	2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2432
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2436

C:\Users\Admin\AppData\Local\Temp\2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-12_bb1c823feda9e01efef2fd426b47cb67_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2732

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

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
fd5873e7ffa92f04f1c2441dd4b44bc0

SHA1
74098b441ce589dea0de8a5e0d8818e88ed6c481

SHA256
97c697261a4773514a2cd1040e142c7f84d915662e5de60533e0c6f8427ac638

SHA512
9a62e5ded2111c0a6190d24ffd234f26bb669621d1f4ff8e66c78f1032bbdd46ad853704974b15d6a7a8b357ee8e66980f726ff030676e1a92470a31288230e5

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