wannacry | b3d815c3d642f1af8691a8a8357ff870fa293ade05764ba974c79d9b1d0819b4

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 13:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

d4787b1cd2e63c02fc9decf7255bf2b9_JaffaCakes118.dll
Size

5.0MB
MD5

d4787b1cd2e63c02fc9decf7255bf2b9
SHA1

a1359d7fb2fd0e4d9aa4f0e0a9e308ea6b33a674
SHA256

b3d815c3d642f1af8691a8a8357ff870fa293ade05764ba974c79d9b1d0819b4
SHA512

afa9601d290aecbd8d4315435710265f84a748552ab73e19b23627580fb7b9f88d570cfa9907e142fd46e5c42e001f82bf2b56d95e2711723b0c7667bf75a264
SSDEEP

98304:d8qPoBhz1aRxcSUDk36SAEdhz3R8yAVp2H:d8qPe1Cxcxk3ZAEPR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3278) 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
2024	mssecsvc.exe
1228	mssecsvc.exe
2096	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2480 wrote to memory of 2508	2480	rundll32.exe	30
PID 2508 wrote to memory of 2024	2508	rundll32.exe	31
PID 2508 wrote to memory of 2024	2508	rundll32.exe	31
PID 2508 wrote to memory of 2024	2508	rundll32.exe	31
PID 2508 wrote to memory of 2024	2508	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d4787b1cd2e63c02fc9decf7255bf2b9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d4787b1cd2e63c02fc9decf7255bf2b9_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2508
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2024
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2096

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1228

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

Loading Replay Monitor...

Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
9494fc35d8504e2c280a19226b41b853

SHA1
d2dfb2ec1c180bf65c407b0b137e2ae95bbbe456

SHA256
38f4d74ab75cb2e4b4a46f63cedec199943d78e12e75126b01ba57f46059bcbe

SHA512
08ffa76f736231cb25af75bc28db4ed8798c77ff1ae0787b984a0567eaa58ec1167decfec4b33323c40348c162aa72cede94ed33ebf3d1a9e23cf3855fd787ce

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a07961fddc578d17af51200c82004632

SHA1
b1fe6c9e63d973f93b8b4a4e08ea51577b3a397d

SHA256
ecf0a699c9e9fafa2956a3d66a753d67571539e4dc95e4b4b210c233232458c9

SHA512
105836c3d0e39d32951e06701123ee8c263f7fde476f6e528027b27656c3c7bf0c83f3d06a37539e2b29561af76c72c73a3a1bbd8a36e2590865c1c70be4c0a7

Download Submit