wannacry | 1d0128fd3184a765076397dd308e51bbc578a3639cb9c08ab6b5c36704d772b4

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14-11-2023 17:31

231114-v3qg7acf42 10

14-11-2023 17:21

28-10-2023 19:29

24-10-2023 13:29

18-10-2023 12:04

07-09-2023 12:10

Analysis

max time kernel
575s
max time network
581s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2023 12:04

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General

Target

19d029dd80a0823d4abe2dfea87b17935844142cb0921eb35a390f70d5f522b2.dll
Size

5.0MB
MD5

16742fb1098a4b134700ea45115284a8
SHA1

9d99856573b2c3bc5350aad7490b35c195e66fda
SHA256

19d029dd80a0823d4abe2dfea87b17935844142cb0921eb35a390f70d5f522b2
SHA512

f90adad0fba522ff8bbe2d32193974ca7e214c90a02e1ff73f2474d4607b28fd7ab2975b25375f68d6a4c98d4fb4d5f3905884b4f290ac51668c0cf9129b9686
SSDEEP

49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA:TDqPoBhz1aRxcSUDk36SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (14380) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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

Executes dropped EXE 3 IoCs

pid	Process
4268	mssecsvc.exe
2480	mssecsvc.exe
4328	tasksche.exe

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

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 4656 wrote to memory of 2188	4656	rundll32.exe	84
PID 4656 wrote to memory of 2188	4656	rundll32.exe	84
PID 4656 wrote to memory of 2188	4656	rundll32.exe	84
PID 2188 wrote to memory of 4268	2188	rundll32.exe	85
PID 2188 wrote to memory of 4268	2188	rundll32.exe	85
PID 2188 wrote to memory of 4268	2188	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\19d029dd80a0823d4abe2dfea87b17935844142cb0921eb35a390f70d5f522b2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\19d029dd80a0823d4abe2dfea87b17935844142cb0921eb35a390f70d5f522b2.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4268
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4328

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2480

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
3b6b9f1e3205cc14a4230bbe490b43e2

SHA1
591281fc356752bacc805424059f798d5053210f

SHA256
f6997b4f17c5cc2dc9e1cabfcb1cb224cca852330f72b5142953a9091c74bc72

SHA512
e2dccccfd7afa99349d708cdb4f51ecfd5e93cf53ac446ab23370fbc6517ce0530d698298cd7faabb9aea2c77d1a7f315f4bc587cd31cf48fe58e8ef58173ba3

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
3b6b9f1e3205cc14a4230bbe490b43e2

SHA1
591281fc356752bacc805424059f798d5053210f

SHA256
f6997b4f17c5cc2dc9e1cabfcb1cb224cca852330f72b5142953a9091c74bc72

SHA512
e2dccccfd7afa99349d708cdb4f51ecfd5e93cf53ac446ab23370fbc6517ce0530d698298cd7faabb9aea2c77d1a7f315f4bc587cd31cf48fe58e8ef58173ba3

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
3b6b9f1e3205cc14a4230bbe490b43e2

SHA1
591281fc356752bacc805424059f798d5053210f

SHA256
f6997b4f17c5cc2dc9e1cabfcb1cb224cca852330f72b5142953a9091c74bc72

SHA512
e2dccccfd7afa99349d708cdb4f51ecfd5e93cf53ac446ab23370fbc6517ce0530d698298cd7faabb9aea2c77d1a7f315f4bc587cd31cf48fe58e8ef58173ba3

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
cd4c51b1f61069ba5573ce4595dff0e8

SHA1
55702389e352e76a163f38842970e866fbff7890

SHA256
29ad915d7efd08b833169d6f3f587d30964205a260d9836e34e67e7faa832257

SHA512
d7c96acdcd9bf4ff12f4cf1f5ae93d5f8edbc472b9eaf780d984aa99976e5374bb119b0222446a9b740618001267068460a7fcc5b320628b1a78dda39d59f7d0

Download Submit