wannacry | a5832d6d06e0db070701957dfed2a564ea5e9f3744099c46001a9539649bf818

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17/09/2024, 10:33

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General

Target
e6a03e920acc645c14f7a4bb173c89d4_JaffaCakes118.dll
Size 5.0MB
Sample240917-mlny2aybjd
SHA256 a5832d6d06e0db070701957dfed2a564ea5e9f3744099c46001a9539649bf818
MD5 e6a03e920acc645c14f7a4bb173c89d4
SHA1 bdb6d7ff74bd06d17476ba67714473bdd5fdfe50
SHA512 e056cbac3dc497fa4ec1be486cd29d8a926a36df87a3bcec422d74a528f4e0706569db91fead0dfd0383d88120a798a978f1768a9c2678482e663de23640fce6
SSDEEP 49152:znjQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:T8qPoBhz1aRxcSUDk36SAEdhv
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 (3307) 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
3672	mssecsvc.exe
4652	mssecsvc.exe
4964	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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 4468	2352	rundll32.exe	82
PID 2352 wrote to memory of 4468	2352	rundll32.exe	82
PID 2352 wrote to memory of 4468	2352	rundll32.exe	82
PID 4468 wrote to memory of 3672	4468	rundll32.exe	83
PID 4468 wrote to memory of 3672	4468	rundll32.exe	83
PID 4468 wrote to memory of 3672	4468	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e6a03e920acc645c14f7a4bb173c89d4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e6a03e920acc645c14f7a4bb173c89d4_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3672
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4964

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4652

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 90d39c41e81b12de191406fb75263d208f5e7841b47bcf77d7fdd4156f8bc1af
MD5 ca9e084bc47a42f3c5f15fb4142bc467
SHA1 a8a43bbd4ef43b4faff94cff5a17ac42e2c2a95c
SHA512 49bab5ea4328897e57d4d22240049e5174fc9520c08f16ae2071e77acc10119c24a45c10393cef052370250356dd5c7b50a23456b8b33cfe2cdbdbbdf6841a42
SSDEEP 49152:XnjQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:X8qPoBhz1aRxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 e3825cad783a302902576ca4cfae9fdfc8640a012876402c89e7dd22475cda91
MD5 ba8922fceaeed80297c3c391c8844b70
SHA1 2ef2a451fbcd42a938ae3d7bfad93dbc8ebe144f
SHA512 faee2d00623ab8a0db455a4b26074faed6da189220630f5260c331ed3d7f633f4cb253efaae25101c64ca836bea92b2de9e8c18614da483d4614b2e176d159bb
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:QqPoBhz1aRxcSUDk36SAEdhv
MD5 SHA1 SHA512 SSDEEP