wannacry | eda5198147ac32f805c96e13ef2681625916f368dd688c7db313c19f96d64652

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10-01-2025 17:20

250110-vwnp1ssran 10

10-01-2025 17:19

250110-vv8zkazqfs 10

10-01-2025 12:28

250110-pnsq4stqbx 10

Analysis

max time kernel
900s
max time network
901s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
10-01-2025 17:19

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General

Target

2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Size

5.0MB
MD5

8f8fb40a1051d221d36afedc8e01a94b
SHA1

c2fbcd7e704d3051afee7ea369fcf266cec28958
SHA256

eda5198147ac32f805c96e13ef2681625916f368dd688c7db313c19f96d64652
SHA512

fa4c2b88aaea9bd997867c50909b87e45a4deae2183105846df8b2733e808550b1961b1dc1cb003a1ec18fc03ff191b1525e3d564041c6698752279550505e2a
SSDEEP

24576:QbLguriKyMSirYbcMNgezQeQjG/D8kIqp+vbOSSqTPV:QnGMSPbcBuQej/d+TSqTd

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 (17255) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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

Executes dropped EXE 1 IoCs

pid	Process
3216	tasksche.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1464	3216	WerFault.exe	78

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	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 3216	892	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe	78
PID 892 wrote to memory of 3216	892	2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe	78

C:\Users\Admin\AppData\Local\Temp\2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:892
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:3216
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 8
    3⤵
    - Program crash
    PID:1464

C:\Users\Admin\AppData\Local\Temp\2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-10_8f8fb40a1051d221d36afedc8e01a94b_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3216 -ip 3216
1⤵
PID:2944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

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
8928a762b7bdc027970816e7a7817fa5

SHA1
049c726beaf5fe48e6bcc692eb5c25eb47f80de5

SHA256
4a02699a917d73fd9988850972b8d96f4d2367874eada34557377cee807f2400

SHA512
0b398fe79a11d4180f21e14bdb49b2c691349bf188266b4509a82f89441303f64f4fc90cb5da4c4a5236e50e6f3866b29027ad9c544a15ad8b339bb2eae0aca0

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