wannacry | 58ddee0e15b3279de8a703cf5b14189edf1f90b83fed266265fba7dfe6e6a910

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
20-09-2024 10:29

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General

Target

ed6560178d30410f2a3e4e99c950b5a5_JaffaCakes118.dll
Size

5.0MB
MD5

ed6560178d30410f2a3e4e99c950b5a5
SHA1

a1f15ecc13181a7d83f056cfff32239b982912fd
SHA256

58ddee0e15b3279de8a703cf5b14189edf1f90b83fed266265fba7dfe6e6a910
SHA512

b53613495c125e6cce1dc98268917dcda60dbb2d8d89b59c9ed40535017dee52dc05440007761217f816590e37643d744af33a1b0ba2761bec563c3804d2f68b
SSDEEP

49152:SnAQqMSPbcBVQej/1INRPvxJMdAMEcaEau3R8yAH1plAH:+DqPoBhz1aR3xWd593R8yAVp2H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3316) 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
3688	mssecsvc.exe
1488	mssecsvc.exe
4908	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 3208 wrote to memory of 2520	3208	rundll32.exe	82
PID 3208 wrote to memory of 2520	3208	rundll32.exe	82
PID 3208 wrote to memory of 2520	3208	rundll32.exe	82
PID 2520 wrote to memory of 3688	2520	rundll32.exe	83
PID 2520 wrote to memory of 3688	2520	rundll32.exe	83
PID 2520 wrote to memory of 3688	2520	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6560178d30410f2a3e4e99c950b5a5_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed6560178d30410f2a3e4e99c950b5a5_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3688
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4908

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:1488

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
56bd6cd862196718e8eea6419feb7bca

SHA1
5fe5decdace48d7ddbea3f8601a2fde00b96ed0d

SHA256
d9c532357e92fa44d0353fbfe2e8418a4201542215c6dcdb0b8c452252facec0

SHA512
a22b8d932bf975d371602d468190e1f0c7aadbc4dd8b7273ad5595c6d9c592766834de237fecd504d134c5a9cd981c52b4d67ea028b4542ac5c484b74c8059e0

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
113f11bc40e47ca8ff018ec317ac3a83

SHA1
69a0ec3fa22246779d7a55f5ad78607140555eb2

SHA256
b0d7a5d1491abfa5ea5b011d02f084e78719dd9a15925a96d3013fc988895bfa

SHA512
fa3d70ad2fa6266118b4f7a047bd515cfff1802dda85897b93061fe3ea2d8f68ed42424be2658c07ad65401b6d6b5653852d1342da1e0d9afc859de6ebb52cde

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