wannacry | 287454f1d7587987385512f4a71ec179d7cfd6c4b5725124c6306882f2d94b17

General

Target

2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Size

5.0MB
MD5

1deaf89429eb1b7abf525a2e7ef68315
SHA1

80262a3c3ddfb82023263451b04bac43e26d703f
SHA256

287454f1d7587987385512f4a71ec179d7cfd6c4b5725124c6306882f2d94b17
SHA512

bb128aeaf0b0f9c1f95b3b5a444a9b365fa35c15b35d4a03a4474a2243bfeb0f313628c9f8bf39ab4e5e3b2d628a85aea727af9111921c0c673b9194691bc06e
SSDEEP

24576:QbLguriIfEcQdIBrYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626:QnpENbcBVQej/1INR

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3288) 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
2864	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\Roaming\Microsoft\Windows\Cookies\ZU0BS758.txt	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\JCT9N074.txt	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\JCT9N074.txt	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\ZU0BS758.txt	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259436667	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	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}\WpadDecisionReason = "1"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}\WpadDecisionTime = 00912b2777f0da01	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}\WpadNetworkName = "Network 3"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}\8e-e5-b2-b1-fb-d7	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-e5-b2-b1-fb-d7\WpadDecisionTime = 00912b2777f0da01	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-e5-b2-b1-fb-d7\WpadDecision = "0"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}\WpadDecision = "0"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-e5-b2-b1-fb-d7	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F817635E-2F37-42CC-B04A-BEC04BEFF3C2}	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-e5-b2-b1-fb-d7\WpadDecisionReason = "1"	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2864	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31
PID 1992 wrote to memory of 2864	1992	2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992
- 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:2864

C:\Users\Admin\AppData\Local\Temp\2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-17_1deaf89429eb1b7abf525a2e7ef68315_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2384

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

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
b92a95f9ebfa70e87d87f5aa5c5a7b67

SHA1
465ae18310281f1a450fb189f60faeeb7744dfed

SHA256
3a31fc2d45ddc957c7a7597b232c998ded38eff8f235683f25f1c4d61b3e9a6d

SHA512
89782a96752682398788f85ddb8f1f4a762060969dcf3e274cb0bc8b7a2548d82db8af60304d77fdc209b7e8b77a8beaa3b65747fe9409db977bf836d59fc86c

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