wannacry | 63550051238d068efd2c0ade82a3ae4f28bda37bae2d92b55e9a6ecb336fab82

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
15-09-2024 13:52

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General

Target

e2a1ddae708d58a3dcca4d82ca2624b4_JaffaCakes118.dll
Size

5.0MB
MD5

e2a1ddae708d58a3dcca4d82ca2624b4
SHA1

995c96ea89c573364d834bdc4ed0a2a443e2da55
SHA256

63550051238d068efd2c0ade82a3ae4f28bda37bae2d92b55e9a6ecb336fab82
SHA512

36548df4f70b8d448791d9127eb81e262484d300815de51ae3996810aa7646c2438ba4ba0099fd4318a4b33a7fedc199589be2743f28b4b0a35c772f38e7b43b
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:+DqPoBhz1aRxcSUDk36SAEdhvxWa9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3260) 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
2164	mssecsvc.exe
1864	mssecsvc.exe
1408	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
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 2060 wrote to memory of 2960	2060	rundll32.exe	84
PID 2060 wrote to memory of 2960	2060	rundll32.exe	84
PID 2060 wrote to memory of 2960	2060	rundll32.exe	84
PID 2960 wrote to memory of 2164	2960	rundll32.exe	85
PID 2960 wrote to memory of 2164	2960	rundll32.exe	85
PID 2960 wrote to memory of 2164	2960	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2a1ddae708d58a3dcca4d82ca2624b4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2a1ddae708d58a3dcca4d82ca2624b4_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2960
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2164
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1408

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:1864

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
62bfe9d50c643b8d745b82cda2ac8502

SHA1
5cfe9c4a300b4321921c8fa9ac3465f6dfc63577

SHA256
3693ecc69ca804527ddbdd9cd6d5157263ce537564400504380a8d23605e7d15

SHA512
662d2e2da259628019a7862595032c5901ed900d14c8e07811949d495ba82570e0c91ecde8153a672895ff199986cfd29780a6f12a92046704c17d34258b531b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
69fa253911ff4509b0fac9a6196b6d6c

SHA1
326514f0734ffa20c07bad20582a0f3046f1cf97

SHA256
0a0857386684539ba55b0203b5b95b6be6ccce0d64fc27cad62ddbe694ec0596

SHA512
b83395b9e2c62206f57c5c59b9be3c941a193e519e1879dc8e7f7c8ebd9767df7aff3767fac4500a484f0fa1204c98686434a25f727bcc53eef783868423b92d

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