wannacry | a732dfc06e3c406c0efb385c7ca51d4c4be76faabddf4fcb5185115eb74fbc96

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-01-2025 03:15

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General

Target

a732dfc06e3c406c0efb385c7ca51d4c4be76faabddf4fcb5185115eb74fbc96.dll
Size

5.0MB
MD5

50277f214d447d0890c53466fb68af0e
SHA1

fa1794c45c893ae6c4e1784b93c56ce8283b634b
SHA256

a732dfc06e3c406c0efb385c7ca51d4c4be76faabddf4fcb5185115eb74fbc96
SHA512

258ee3e29063557e0babc743677dccb56af030ae531e899fbda84dea3fd61a447a1f8a3d36766fd871de35db1c7a63c8d682f0a0ca6be7e334b389cc72e4bb55
SSDEEP

98304:M8qPoBhz1aRxcSUDk36SANKx/ag6iVp2H:M8qPe1Cxcxk3ZA0Yu4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3289) 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
4796	mssecsvc.exe
868	mssecsvc.exe
1420	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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 3300	1680	rundll32.exe	82
PID 1680 wrote to memory of 3300	1680	rundll32.exe	82
PID 1680 wrote to memory of 3300	1680	rundll32.exe	82
PID 3300 wrote to memory of 4796	3300	rundll32.exe	83
PID 3300 wrote to memory of 4796	3300	rundll32.exe	83
PID 3300 wrote to memory of 4796	3300	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a732dfc06e3c406c0efb385c7ca51d4c4be76faabddf4fcb5185115eb74fbc96.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a732dfc06e3c406c0efb385c7ca51d4c4be76faabddf4fcb5185115eb74fbc96.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3300
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4796
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1420

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:868

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
37e83c242780259951e18e4492b93594

SHA1
26daa14a22083417b6e294f7a20ebd666c6fcdd1

SHA256
0a54aad986469f3015c019e4fcd5cf0d27a6f98688e272c67ee8b862b3fd18f3

SHA512
98336c534626e0f183c29afb00d65c0796a3cf7e98e1bc30dcbdfa46ab0b864cc788585deab8ec39b1bc9671dc70ede6662cbb212e7caa5107a907162550019b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c6e92c6ed2e9e493e490001c4d4c8996

SHA1
18f29ac7b184ae98ee1c0f798723b6f48485c4b8

SHA256
d310fd32a780d2978e5f34bd70a309661ccd9a2df9996357a02a871ff35a131a

SHA512
b45554d0cc5a6b3f5b90185c23752144a6b3f59e0c34dde6d1f078b25f16362f14f65fa006a9ddea0c61e5774dfbe4af68bd128f7120bae33df59dac12865467

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