wannacry | f2ca46f66c67c987fb0dccc713fc064549d5431bf3fdd378128b1e2e264f9863

General

Target

2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Size

5.0MB
MD5

244aa8fb39c351f8974c2bc50f62bc2a
SHA1

a06de405b65a00909626afaea1dc95c0884381e8
SHA256

f2ca46f66c67c987fb0dccc713fc064549d5431bf3fdd378128b1e2e264f9863
SHA512

8e1ef147c94e7de5e20dbb4e2caddd28877d8e12f0645834e74562df168ca8debb61c5c68164087d7a5a9a15a88ab09eb651923f9735e08baa6e460e221d507e
SSDEEP

6144:eE9l9ynRIYVTH5DgSgNajldktM0XXrCIagQhMV9qbB:e1bLgmluCtgQhMb

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 (3135) 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
864	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	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
316	864	WerFault.exe	85
4020	864	WerFault.exe	85

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	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_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\ZoneMap\	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 864	548	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe	85
PID 548 wrote to memory of 864	548	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe	85
PID 548 wrote to memory of 864	548	2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe	85

C:\Users\Admin\AppData\Local\Temp\2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:864
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 864 -s 216
    3⤵
    - Program crash
    PID:316
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 864 -s 240
    3⤵
    - Program crash
    PID:4020

C:\Users\Admin\AppData\Local\Temp\2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-17_244aa8fb39c351f8974c2bc50f62bc2a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 864 -ip 864
1⤵
PID:3612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 864 -ip 864
1⤵
PID:2368

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
f67391ba69dfdb921e14ed3b166d9d93

SHA1
a1b73f38f2bd592e48089a48c918f61fd19acc15

SHA256
961485deb29d59ce1acc3e60f8a1e2b7d5aa9050dbeb183d2bb1b776964211d2

SHA512
c7d1045d360b5982d742bdcc3a301021d83349c426124cdf9e14d88eebe0066fdc30aa5da3d67b593a3d8af3daec16b9bdf068b643429c00bd92434486acded0

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