wannacry | 33b5630ab1d80689c8644dcefd98a037027009c336ec14dfd10a214b21110333

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 17:06

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General

Target

e9965bd5de99ff82cf91603d126fa6a5_JaffaCakes118.dll
Size

5.0MB
MD5

e9965bd5de99ff82cf91603d126fa6a5
SHA1

01b2224fa44cf5246a1c572c2597eee1a45a6bf0
SHA256

33b5630ab1d80689c8644dcefd98a037027009c336ec14dfd10a214b21110333
SHA512

8dcd5716762beff51a9a36fd03d1385086275d9526fe6d43112c0407f66e22b9e47080361e7ad70f619a08ec07881b915ccf3d42883da93ff192995e6e941c25
SSDEEP

98304:+DqPoBhzTxcSUDk36SAvxWa9P593R8yAVp2H:+DqPeTxcxk3ZAYadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3222) 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
4676	mssecsvc.exe
2248	mssecsvc.exe
1016	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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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 3536 wrote to memory of 4468	3536	rundll32.exe	82
PID 3536 wrote to memory of 4468	3536	rundll32.exe	82
PID 3536 wrote to memory of 4468	3536	rundll32.exe	82
PID 4468 wrote to memory of 4676	4468	rundll32.exe	83
PID 4468 wrote to memory of 4676	4468	rundll32.exe	83
PID 4468 wrote to memory of 4676	4468	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9965bd5de99ff82cf91603d126fa6a5_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9965bd5de99ff82cf91603d126fa6a5_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4676
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1016

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:2248

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
d9202038c45f98fd99e025c07dcdff94

SHA1
d657274387578a54ca74507ec7a6528468426419

SHA256
5a71f2e86b516c3ea15a1fecd56c0883f0969abd3f8867f8f7b88a9a177f5a43

SHA512
fe17e73e39797cb277a3c421a97668b20d698788b49a07b1c87d3741f1c6a0748487c1ddbea06db39eec027b37069dc51e7ab60eb2e746ca7c36975817b65388

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c1cac710562620c5ed1b2784518fdf1f

SHA1
3ef49cab7c4561f95496650f3aa24619749879cc

SHA256
3086a44e93c777fbf952e57884fcc00be4a043ee9aea8fdd6ddf1410e8115d1d

SHA512
ae6ee4ed5916910a2a192f92716cddcfe1615da80691bb49608496037e3df264b14ff0daf0c6745ba41cb05d19d833811fd0357a0f46afbea2467ac62b078e36

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