wannacry | dadfa38538399402b9ad74be92ba2d63420a38ef565831e7828fc12ec5f13a8e

General

Target

2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Size

3.6MB
MD5

f3d461244caa4fa99eddb1bcd8f8e5f6
SHA1

a14aa0617df55e5ea36a377bfe1b1683f322b2ca
SHA256

dadfa38538399402b9ad74be92ba2d63420a38ef565831e7828fc12ec5f13a8e
SHA512

f2a632840c35e098cec82e61bbb79e07b9b278677b99c0a98cc1f32777948923475389b0bee4f1e5fb4c54f32f39f83b1e03ba7f8aa130b7d77612008bd8901b
SSDEEP

49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6S:yDqPoBhz1aRxcSUDk36S

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3294) 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
2924	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}\WpadNetworkName = "Network 3"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ab000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}\WpadDecision = "0"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-ce-87-45-3d-07\WpadDecision = "0"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}\WpadDecisionTime = c082d150420ddb01	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-ce-87-45-3d-07\WpadDecisionTime = c082d150420ddb01	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-ce-87-45-3d-07\WpadDecisionReason = "1"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}\WpadDecisionReason = "1"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\1e-ce-87-45-3d-07	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F1270663-7083-47A2-ADE4-A415B58BF384}\1e-ce-87-45-3d-07	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1076
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2924

C:\Users\Admin\AppData\Local\Temp\2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-22_f3d461244caa4fa99eddb1bcd8f8e5f6_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2576

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
3.4MB

MD5
117c8579fbf9d712a4b883adecb0be5e

SHA1
c37f9b721b804a7b13898888b635f97910401369

SHA256
5faac8ff2211687c3d4e25d17393a308b1f720e6fa4763083de88411f83016d6

SHA512
0b404ecc4eedce02c6a982d3324ece4ac995bbdd4ca4b2557999ab6e43d66591228e3d18e1cd5735f48f429ab6a85715ec1f866a471e3b766d3cf794a2b5c600

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Analysis

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