wannacry | 12683643eb17733a7ca655f06db78388ea84a502c690173349bf6cc3c95bd291

General

Target
2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Size 5.0MB
Sample240916-tk427axaml
SHA256 12683643eb17733a7ca655f06db78388ea84a502c690173349bf6cc3c95bd291
MD5 6bd48b0bea8b99d88a97486351dff2e5
SHA1 e0ce7a375fc3ae123c480f40a0b0ccaf39597f9f
SHA512 086afd8ea2193fc7374193db6fbbff14c7f169318dfcfe3c254154eff663aa31aa43da32719e377ed4e40257bbe0dad25156584b474c70743d9c47506e3a7ed9
SSDEEP 49152:2nAQqMSPbcBVQej/13n4bo3NCdRvWyXeX:yDqPoBhz10o3oWyu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3236) 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
2896	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	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_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	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.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	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}\WpadNetworkName = "Network 3"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-bc-6d-92-53-7b	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-bc-6d-92-53-7b\WpadDecisionReason = "1"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ce000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}\WpadDecisionTime = 60fd819d5208db01	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-bc-6d-92-53-7b\WpadDecisionTime = 60fd819d5208db01	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fe-bc-6d-92-53-7b\WpadDecision = "0"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}\WpadDecision = "0"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}\fe-bc-6d-92-53-7b	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8E8D3A99-D70A-4C07-9E10-A481F371B7C3}\WpadDecisionReason = "1"	2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:3060
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2896

C:\Users\Admin\AppData\Local\Temp\2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-16_6bd48b0bea8b99d88a97486351dff2e5_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2744

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

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 d22b697a018a3fec9daff3f5f7d59266c226749d6fab316d80688bebe10cb229
MD5 919e99bc955ff6f8060c73bdf7522f7e
SHA1 78f1f043dfdc92282c78e6ce4fe0df58d215f130
SHA512 87880e62875a772bbdd0f8a0776218c2e29f2fa8939841aa7464cee89009b8db0d621b42fe5785060a349d07678efa4d0046b72e78ffc1ddc8ab496b16471011
SSDEEP 24576:nQhfdmMSirYbcMNgef0QeQjG/D8kIqRYojisZU5GRkfY+V1JqJL7NI5dRvWVcCoV:nQqMSPbcBVQej/13n4bo3NCdRvWyXeXC
MD5 SHA1 SHA512 SSDEEP

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