wannacry | d463884f93dc01452e1d7581a99ac4e0b14efa7856c99bd3299506db6e3d1bf2

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-09-2024 00:27

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General

Target

d3247d5df0e241a88659369514c8b7cb_JaffaCakes118.dll
Size

5.0MB
MD5

d3247d5df0e241a88659369514c8b7cb
SHA1

cfa3f96ece973df23998b77b24e922245f1e2a31
SHA256

d463884f93dc01452e1d7581a99ac4e0b14efa7856c99bd3299506db6e3d1bf2
SHA512

90acb732c7c54a427aed0b1eb9735b866778b2e0ac9a139f8bdd8cb98f33cd499fff6046f5f8b5524d253e6cc3406d21647d3b5e6ce280b9f7f10b5d7069fc35
SSDEEP

49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9:TDqPoBhz1aRxcSUDk36SAEdhvxWa9

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3268) 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
4576	mssecsvc.exe
2040	mssecsvc.exe
540	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	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 4704 wrote to memory of 1984	4704	rundll32.exe	85
PID 4704 wrote to memory of 1984	4704	rundll32.exe	85
PID 4704 wrote to memory of 1984	4704	rundll32.exe	85
PID 1984 wrote to memory of 4576	1984	rundll32.exe	86
PID 1984 wrote to memory of 4576	1984	rundll32.exe	86
PID 1984 wrote to memory of 4576	1984	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3247d5df0e241a88659369514c8b7cb_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d3247d5df0e241a88659369514c8b7cb_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4576
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:540

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:2040

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
db10bd9bc167e12f349f89dd8d1b00e4

SHA1
705dbb4d7db687388713e9cfefc31af3db7c038f

SHA256
d2ac23e94ee5d448c5f940252a3190fc0c86cb3257fbb39e4ae1271d1c6688b4

SHA512
1554273c51d1624ee9f655940022395ae72636e04d515174364c15c21f932a8374517830c7ca671a099393fd4ec6438dbee2259e5a04e7775a6adcb8c68c52d0

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
cf4933946179970c7b6ac97e2351afb0

SHA1
907dc14feaafcb227f6c490a9328a2d6dba97300

SHA256
61cb8b931df26701620d5e4b94bd30a907d1468554d4d19f61973737c8d395f1

SHA512
981739a3765af7e4c0785e1cc84ea76f99216ab5ed645a58c118bee1020abee979cf446af413c1c1e9c174b2ad71461f860e32057a370f1db8cd480032733295

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