wannacry | ebe31fd906bdf28945926cee334266abd14c7a81390c13867d1abfdc1dc8f540

General

Target

2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Size

2.2MB
MD5

b15fb425b628062a7bb0f11dbaecf4ac
SHA1

016ebb19fb4a8d125867d63faa200e77df1273e7
SHA256

ebe31fd906bdf28945926cee334266abd14c7a81390c13867d1abfdc1dc8f540
SHA512

0db0b74354a5444d0a6134faa4dde79750ac110fee116235b5bb908988868f171b63966d5e2acb28319ea2138880777f284515520a5d1a945c163e35db98ef4c
SSDEEP

49152:QnVENPbcBVQej/1INRx+TSqTdX1HkQo6SAAw:QVOoBhz1aRxcSUDk36SAz

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3218) 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
2196	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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5068	2196	WerFault.exe	84

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	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 2196	1808	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe	84
PID 1808 wrote to memory of 2196	1808	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe	84
PID 1808 wrote to memory of 2196	1808	2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1808
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2196
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 596
    3⤵
    - Program crash
    PID:5068

C:\Users\Admin\AppData\Local\Temp\2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-21_b15fb425b628062a7bb0f11dbaecf4ac_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2196 -ip 2196
1⤵
PID:216

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
41c0e22d28973f312de789c027e61d0c

SHA1
193f7413961324eda1f3f8cd0f6010fcb73028ec

SHA256
282afb52e37bfb69d3016e1bb99e11aa9d6d9cb7759ba02279e44eeb9f504a9b

SHA512
d4196d39077e6f7ad8e402762fad33b3ce74558fd8c34b412dda96a118bb421927cec5816c6d5728de79288dfeccba066630211043b35c16c1a165a4bec19a37

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Analysis

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