wannacry | b3042f515063612a4511006e385d3815ca67fd549f82344f64aae99d2859d4d0

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
15/09/2024, 07:20

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General

Target
e1f7deeef4b6178d3c34fb841b604a2b_JaffaCakes118.dll
Size 5.0MB
Sample240915-h6fe6ssdkn
SHA256 b3042f515063612a4511006e385d3815ca67fd549f82344f64aae99d2859d4d0
MD5 e1f7deeef4b6178d3c34fb841b604a2b
SHA1 f911e4bacce9e350ac9b54262120e220371e2d4e
SHA512 216ac5306715c433d296c2f7c0e617160f134680772a0fb5d9a73533856ed58b67aaacb3da5fefc8c35a5946712906f5a4792cc0a63fb98e8c5d130608aa4cb0
SSDEEP 98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P5SAVp2H:TDqPe1Cxcxk3ZAEUad0c4H
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3350) 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
2300	mssecsvc.exe
1684	mssecsvc.exe
3996	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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 2596	1056	rundll32.exe	86
PID 1056 wrote to memory of 2596	1056	rundll32.exe	86
PID 1056 wrote to memory of 2596	1056	rundll32.exe	86
PID 2596 wrote to memory of 2300	2596	rundll32.exe	87
PID 2596 wrote to memory of 2300	2596	rundll32.exe	87
PID 2596 wrote to memory of 2300	2596	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1f7deeef4b6178d3c34fb841b604a2b_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1f7deeef4b6178d3c34fb841b604a2b_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2300
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3996

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:1684

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

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 844516d09db5757468505cce881fb9e86ff7e1c7d482d73c1eb9bb4b464b0a33
MD5 e288dffc8045e3f9a6813f2b694465af
SHA1 01df650effcaa05d02c5d1c4f507f8d696c51644
SHA512 02d6f2e1fd24431f58ac76783b958b4c2b7aa20f85b4ec25a0c84f403e821ae41294bad5c78dc116c927496f87004495de34e26a278c811180ad4ba9049ad9f9
SSDEEP 98304:XDqPoBhz1aRxcSUDk36SAEdhvxWa9P5SAVp2HI:XDqPe1Cxcxk3ZAEUad0c4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 9ab74eaa64bdd2e982671ea666e805bff98eae3d8fdc3cd9b9c90e6cbc51ae6a
MD5 9030734896766d8809ecb2c65bc8305b
SHA1 4de9913027b9407e6b0392c2e60283beaa6bab9f
SHA512 681a0b83b0e081ee1789c777185b08ca48fd1eec7f28c8853735e31aceacfc00ee93b222565472742284e0adfa0233b111603b4c9ca5ce51f20fa7538b0b32af
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P5SAVp2Hj:QqPe1Cxcxk3ZAEUad0c4Hj
MD5 SHA1 SHA512 SSDEEP