wannacry | 3510a6cd1fccfd69f27a038454ba1e0a2f3e6666c9fa927c3151a00aedfc89cc

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14-09-2024 14:39

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General

Target

e064c76a67507dd7a2dbb1556510fd7f_JaffaCakes118.dll
Size

5.0MB
MD5

e064c76a67507dd7a2dbb1556510fd7f
SHA1

25e1b22505ecaaa477b93929987be91980c54e1e
SHA256

3510a6cd1fccfd69f27a038454ba1e0a2f3e6666c9fa927c3151a00aedfc89cc
SHA512

f2f032bf9d5a22064d01c98d007e4f765121fc2854227be60ca0f3930912052a9ccff50a0eb8758683a0bae51003be23bbaaae7312b8c0e3100205a74dda908c
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQDSkRiwt/Zx+:+DqPoBhz1aRxcSUDkgSkkGZx

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3325) 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
336	mssecsvc.exe
2916	mssecsvc.exe
5052	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
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 1776	1088	rundll32.exe	83
PID 1088 wrote to memory of 1776	1088	rundll32.exe	83
PID 1088 wrote to memory of 1776	1088	rundll32.exe	83
PID 1776 wrote to memory of 336	1776	rundll32.exe	85
PID 1776 wrote to memory of 336	1776	rundll32.exe	85
PID 1776 wrote to memory of 336	1776	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e064c76a67507dd7a2dbb1556510fd7f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e064c76a67507dd7a2dbb1556510fd7f_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1776
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:336
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:5052

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:2916

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
1230ce9f895d8eaa19007473a2bb2458

SHA1
b153fff140fc98e80e7bbfe5e42c0eb130ae82de

SHA256
91ac5831b3a231ff9f808c4e947a07adcdcf0d8626958e362d2812a9c0ef1cc4

SHA512
cd3b206aec30c7ee34756d8a1d017262f5b46859d1b1925195707921132d51752a749910ef1e4b1aec495c9ea0b201fd5f032e7bba748ee0e023918baf2bcc86

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
b96bb96cdc803f11dbf69a2df353a1ef

SHA1
e3580227ae45bedaa33cc1c7e7f72c11749b78a3

SHA256
0b0ee43b092ac2bfa2646022d1c024eb0b7ebe574a6a1e3c395a83cf6d1b9009

SHA512
9a464e2aa300e38a2246b3752667e71e703edf9cb8730be189a135f14127a6d42bd4d633d64c292f792e501bcd3725def45bb5a9d510f6c1bc7b395f70ee6765

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