wannacry | a2a8dc3119e8feb6df373c8eab6f139db156e3847032b5665fe8430a8b78dd83

General

Target

2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Size

5.0MB
MD5

cfce921c45b8819bfc6ee9850221e445
SHA1

0224d594a2acf3f47c9fe773defab64802d0a1a2
SHA256

a2a8dc3119e8feb6df373c8eab6f139db156e3847032b5665fe8430a8b78dd83
SHA512

aed2c0bc2454d0c239b3a44d1d0e56f80ea5635bb66a59c33a99c5a215dd321f94b63191149da1eb4f57402c9cff3e63fe62832647099c82ad3147f6692b1d27
SSDEEP

24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXmiH:2nAQqMSPbcBVQej/1INRx+TSqTdX1H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3209) 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
528	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	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-03_cfce921c45b8819bfc6ee9850221e445_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	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-01-3d-49-c7-0a\WpadDecisionTime = a0dd170bace5da01	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}\aa-01-3d-49-c7-0a	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-01-3d-49-c7-0a	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-01-3d-49-c7-0a\WpadDecisionReason = "1"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}\WpadDecisionTime = a0dd170bace5da01	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}\WpadNetworkName = "Network 3"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}\WpadDecisionReason = "1"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{628C3927-B791-4511-B4E7-F3819ADA65A3}\WpadDecision = "0"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\aa-01-3d-49-c7-0a\WpadDecision = "0"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2440
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:528

C:\Users\Admin\AppData\Local\Temp\2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-03_cfce921c45b8819bfc6ee9850221e445_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:580

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
4a47d4285f157905eebe09f9574200d0

SHA1
b0b09eb942b0af3ad6f3c6eb59635fefba34f3cf

SHA256
a1cad97ed2c1285f3744dcf89be5f8e8f0b290741662496a2308c6da58f30dc0

SHA512
4d2397bbe7e2f6361e192f1516247ae62184e8205f50790ef96863cadaadb91956a6bbe0a39e97e78db107f4ad141e5525759d119a55779b98737c2965f7bdbd

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