wannacry | 542d5b2147a50754a3b0a4aa7c60128e7eba50f84dda4d360567c43836544d4a

General

Target

2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Size

5.0MB
MD5

8a94b28ad9ee5e216808734cea5d4b39
SHA1

4414112b27c761e79960d657cce37c3e326d0277
SHA256

542d5b2147a50754a3b0a4aa7c60128e7eba50f84dda4d360567c43836544d4a
SHA512

12801576dd18fbe49853a25c949d18bad472c8b39d65ce56350f78ef63c96a19ed6590d8eb8dfa9acb721ccb7d0fa263ad61ccbf660c69a5a5665f58bfe4fc30
SSDEEP

49152:QnpEjbcBVQej31sNRx+TSqTdX1HkQo6SAA:QpUoBhT1+RxcSUDk36SA

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 (2159) 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
536	tasksche.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259489223	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	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}\WpadDecisionTime = c0ddc89b5c5fdb01	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}\WpadDecision = "0"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}\WpadNetworkName = "Network 3"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-03-1f-7e-cc-6f\WpadDecisionReason = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-03-1f-7e-cc-6f\WpadDecision = "0"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f007e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}\WpadDecisionReason = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-03-1f-7e-cc-6f	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{43EAA9EE-2E31-4410-B758-FC7ABBC2A555}\86-03-1f-7e-cc-6f	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-03-1f-7e-cc-6f\WpadDecisionTime = c0ddc89b5c5fdb01	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
536	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33
PID 2512 wrote to memory of 536	2512	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	33

C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2512
- 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:536

C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

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
41d0a9857e22a22a7085cc6914032cc7

SHA1
30ab9042489bb204a226d1b907ef2ad252958606

SHA256
a56939989618754ab267e088a900f3824ba7c01a38a975479ac577a11f878edd

SHA512
d175aa6a0c3f5a08e0be33aabe359c3e212c5ff03045c50eb40f7e591b08c9fec634eb2c9bde2ec597879f36f643f70478c01d4eed35629275ae36670eea2aa0

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Analysis

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