wannacry | ef11b181da12beac2128d1093c5b2a1314373840f3780c051ffd05413b4f46c3

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
09-09-2024 00:22

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General

Target

d55c176c7a814233f6e57e699f8f6230_JaffaCakes118.dll
Size

5.0MB
MD5

d55c176c7a814233f6e57e699f8f6230
SHA1

cb0051e7c130acfd7f21bb03a6843cc2950b52da
SHA256

ef11b181da12beac2128d1093c5b2a1314373840f3780c051ffd05413b4f46c3
SHA512

fc322c67206c37c5253a55f971651df1edb224de74cee4a4074db17c59992d48e4e8e21a553cc2f2f626181456b93c14e13c7d0ea39ad8b5645fdc3a85be7a0f
SSDEEP

98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P593jVp2H:TDqPe1Cxcxk3ZAEUadz54H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3329) 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
3300	mssecsvc.exe
2900	mssecsvc.exe
3312	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\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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 3932	3172	rundll32.exe	83
PID 3172 wrote to memory of 3932	3172	rundll32.exe	83
PID 3172 wrote to memory of 3932	3172	rundll32.exe	83
PID 3932 wrote to memory of 3300	3932	rundll32.exe	84
PID 3932 wrote to memory of 3300	3932	rundll32.exe	84
PID 3932 wrote to memory of 3300	3932	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d55c176c7a814233f6e57e699f8f6230_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d55c176c7a814233f6e57e699f8f6230_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3300
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3312

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:2900

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
1d7118f90db2ec61b271ff4f1e9866ab

SHA1
9e6f7761ae2d0afcd57da5a5f0f068dbacf28581

SHA256
b747dfdab7a3314bd384ef56709a7ee00da17966ed0481e138f5fe54f7d835ed

SHA512
c8189e19aed24b107d5cc7b9f6f0b2f9e456ac4a39ebabc92211e21243de3ae6a4e344277f0747a65ca666ccc9c1b24d2bdb6fdc1afab80facee84bcf4b2ad4d

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c2c38ae3efc4ba1aa418e8aba77d5b0d

SHA1
9207451c503bc74ee93f58a5f05d78f77f676d3e

SHA256
134094a40177fe6cc93ae28e9404317a9d3a23c2f0f64395fcdfdaca08958773

SHA512
e2ce46b2eb76dfb7afd4f5072b980c5d995818bb6837457c45ea6fd710ebb620b74e4a4af41fd7e2ecc9607f557af45075d80440a58394ebfb4d9278d4535f98

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