wannacry | 2a31d9bf3ac6f5793211109a07bf8e2472b81631846f2140a48fd593f4687682

General

Target

2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Size

5.0MB
MD5

0e915dd8dcf9b5cc4ea8048dc549f21c
SHA1

c6d25e417bce832513f4ea196d773421db2e1534
SHA256

2a31d9bf3ac6f5793211109a07bf8e2472b81631846f2140a48fd593f4687682
SHA512

d67d047937651b7622c294b0fa235ea0186f8efb686f37cea03793f44f3e39d80b272d4f3ba37bc25c5d3dd0c58fab12af20ad192b0734bad2e8342a3985c6a8
SSDEEP

24576:QbLguriIfEcQdIVUacMNgef0QeQjG/B8k:QnpEKUacBVQej/

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3138) 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
2584	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 opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\W85XW3OZ.txt	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\W85XW3OZ.txt	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\WCY4A3MB.txt	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\WCY4A3MB.txt	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259417089	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	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}\WpadDecisionReason = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}\WpadNetworkName = "Network 3"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}\2e-5f-f5-8d-51-a9	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2e-5f-f5-8d-51-a9\WpadDecisionTime = 80f47292630edb01	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}\WpadDecisionTime = 80f47292630edb01	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}\WpadDecision = "0"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2e-5f-f5-8d-51-a9	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2e-5f-f5-8d-51-a9\WpadDecision = "0"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2CA533EF-4B2F-471E-8186-029C7704BD66}	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\2e-5f-f5-8d-51-a9\WpadDecisionReason = "1"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2584	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31
PID 2732 wrote to memory of 2584	2732	2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:2584

C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-24_0e915dd8dcf9b5cc4ea8048dc549f21c_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2536

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
6301130c98d0c14a955922c51688f39b

SHA1
d83de50bae425bc206b5e5f5ab30996b7057fbd7

SHA256
5b6ce28389464a4c76a0c5cb43ab0e3eb038819c6928745a1e7e965140296b9f

SHA512
eb6139c92f56acc613e27271b0e749a09c6c9be0759cc222a55de114d473da9b34a971522f2f28ed7ee0552158fb0c4798f6813f2fe6b7cb9f08ec19f12ef54e

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