wannacry | 90e1c09b917ba911cdab1b1051cc5ca2a9dd13238764188d6742ecc8e822b378

Analysis

max time kernel
150s
max time network
152s
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 22:58

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General

Target

e7dc469ddece531137ede07b94bfff3d_JaffaCakes118.dll
Size

5.0MB
MD5

e7dc469ddece531137ede07b94bfff3d
SHA1

eea0ed7f4c11185fd0c5aaaca6b00d0ded3a27da
SHA256

90e1c09b917ba911cdab1b1051cc5ca2a9dd13238764188d6742ecc8e822b378
SHA512

77144aa6ea5a98345d49a97f0ca0be7bd36bddfa70deb36afd8dcfc02f6bbae0746c856630e0c798a57886c69817d54882278a5a3fe6f42c753a6a78917e9fee
SSDEEP

49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:XDqPoBhz1aRxcSUDk36SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3230) 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
2836	mssecsvc.exe
864	mssecsvc.exe
4668	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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 3000	3620	rundll32.exe	82
PID 3620 wrote to memory of 3000	3620	rundll32.exe	82
PID 3620 wrote to memory of 3000	3620	rundll32.exe	82
PID 3000 wrote to memory of 2836	3000	rundll32.exe	83
PID 3000 wrote to memory of 2836	3000	rundll32.exe	83
PID 3000 wrote to memory of 2836	3000	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e7dc469ddece531137ede07b94bfff3d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e7dc469ddece531137ede07b94bfff3d_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3000
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2836
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4668

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:864

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
5c0bb3e625a472e8219a0cdc25ceff0e

SHA1
2d0ee877bed090e4879d9c921d716d97fad28a8f

SHA256
2c5f953e6ba448a06f44c266d82155fc947c2a07bca6d0581dbc84f919a02335

SHA512
98af64e5b506a06daaffc9756fd8b116d24105d29c6cfd35eb4d64adb14df4a478fbde81b4cf082f2d6b60e29f4032c9005de65488998a37883188a94c97d694

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
3233aced9279ef54267c479bba665b90

SHA1
0b2cc142386641901511269503cdf6f641fad305

SHA256
f60f8a6bcaf1384a0d6a76d3e88007a8604560b263d2b8aeee06fd74c9ee5b3b

SHA512
55f25c51ffb89d46f2a7d2ed9b67701e178bd68e74b71d757d5fa14bd9530a427104fc36116633033ead762ecf7960ab96429f5b0a085a701001c6832ba4555e

Download Submit
memory/864-6-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/864-11-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2836-4-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/2836-10-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download