wannacry | 8e6792f76da8dd823517fe1b563b86b3670389a27efa0e48d9770370aebcd719

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-08-2024 12:03

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General

Target

c2f45780a92f1ebe7bef8666e5b2284d_JaffaCakes118.dll
Size

5.0MB
MD5

c2f45780a92f1ebe7bef8666e5b2284d
SHA1

b64779feba9ea84eb6b489eadb73ec635fd4b250
SHA256

8e6792f76da8dd823517fe1b563b86b3670389a27efa0e48d9770370aebcd719
SHA512

fd9f03f0520b6f24b30674ddf498b470044115290d52c2429ad24d5a8e3bf6ef4fea04bf5ab948b182f734dbc9e16a8f3356d684cae8283e576392d06ae9c995
SSDEEP

98304:TDqPoBhz17iSYOgS/sXxW/WnTTTxa9xWa9P593RenVpE:TDqPe17kOPWxW/WnnT42adzReVm

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3270) 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 3 IoCs

pid	Process
4256	mssecsvc.exe
3592	mssecsvc.exe
2488	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 Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 3052	3424	rundll32.exe	84
PID 3424 wrote to memory of 3052	3424	rundll32.exe	84
PID 3424 wrote to memory of 3052	3424	rundll32.exe	84
PID 3052 wrote to memory of 4256	3052	rundll32.exe	85
PID 3052 wrote to memory of 4256	3052	rundll32.exe	85
PID 3052 wrote to memory of 4256	3052	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c2f45780a92f1ebe7bef8666e5b2284d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c2f45780a92f1ebe7bef8666e5b2284d_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4256
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2488

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:3592

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
896225ded93bd142bb65049d7b897c2f

SHA1
212b6c78db49167d573748dcf6345e21f96ea804

SHA256
82135513eacff950fc7ef848a18d01e1593b5d70f01689aaca9f2f643bdc24cc

SHA512
2c1d861a85d3d9981d0765c44d6bfd41828db1b451d36bca15b6ebcdce6f5eac639d99f525970e2ef05e5c9b0e56f02d11ef1f636600ffb39c237ff0ff3be5cc

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
2a57f48993fa5737850c4a90f58feaa7

SHA1
3b0fdae686657672eb1f4bb076c5d926d5d9a3a7

SHA256
283989409f8b35d7883b0a1efd87d5f474927788bc3198dbedb863fbcbb1b7b9

SHA512
59861eec87b706387464f4472cb3c4c768108a4e087954f4caf09c864725d7da7fc955641b5b4e6cef7bda950a3aa4ebe29493dd898bf6264924f46285432403

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