wannacry | 978ec74d468d7d806d2118776d9df32953ff6a933c5ed5603f083013e5c40a3d

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 08:25

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General

Target

e8b3ad3133f8f083db28728532d93dd9_JaffaCakes118.dll
Size

5.0MB
MD5

e8b3ad3133f8f083db28728532d93dd9
SHA1

71419f783196470966dfcb94d371650ae160194e
SHA256

978ec74d468d7d806d2118776d9df32953ff6a933c5ed5603f083013e5c40a3d
SHA512

9b2195cdcfec2657ba16099adc85b3c1d1765d1f581dab31b58769d418f3c7e27e97364b9a271a065a23b4035f904e1fc042a806081dacdaf1ee809b2ba82a78
SSDEEP

49152:SnjQcMSPbcBVQej/1INRx+TSqTdX1HkQo6:+8cPoBhz1aRxcSUDk36

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3147) 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
3540	mssecsvc.exe
3268	mssecsvc.exe
2336	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 3772 wrote to memory of 336	3772	rundll32.exe	82
PID 3772 wrote to memory of 336	3772	rundll32.exe	82
PID 3772 wrote to memory of 336	3772	rundll32.exe	82
PID 336 wrote to memory of 3540	336	rundll32.exe	83
PID 336 wrote to memory of 3540	336	rundll32.exe	83
PID 336 wrote to memory of 3540	336	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e8b3ad3133f8f083db28728532d93dd9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e8b3ad3133f8f083db28728532d93dd9_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:336
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3540
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2336

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3268

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
d78007d1a7b065c7f3a78b0a0355f533

SHA1
141cc2201ba092854000c1f74373891e981d7be7

SHA256
3a87b66494925605c6d1f88eea0b6a06e8eb97ba5235d881a9ba56df517fd368

SHA512
53044a5de4d09a35d9e8c79cb0cd9be2cb0a508505d51881e263fd8ddac9f7aa9e9af76bd51cf84eb2aa9dbadac274aa9c4f844f6f6d50988cce4c1a0c5f3f57

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
6dec970a6a6ae01181732d6910892837

SHA1
027fd2e6150c13755014b4f37b26940b57cb91f8

SHA256
a73a81334f15ad3c08a5913f67fc5d990539e363bf041e112f35b413717a4a54

SHA512
6088fbabe4855588134cbfcdb611a324d437c1120bb2a05c3ba60cc83cf1aae90846c132d0a84d7ff4987a2e902f5c1f900de5ea8286c27ed8417f7fe542c3d1

Download Submit