wannacry | 5239f7bdb6d48f8d197d8df5228ef88e2e26c3d6e2da83a05c8518a736a54f4c

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
06-09-2024 17:02

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General

Target

d0068c739eb772e954bcd76c4b013fdd_JaffaCakes118.dll
Size

5.0MB
MD5

d0068c739eb772e954bcd76c4b013fdd
SHA1

380f0c98dbee812b65bd133cb1f9a09a3173869e
SHA256

5239f7bdb6d48f8d197d8df5228ef88e2e26c3d6e2da83a05c8518a736a54f4c
SHA512

358e7b46024a72b4f5c0cec84c4a710d8e52a1c8743a1b36a56f85b6f15bfa6b60a5c490bee00f5abd255c56196fcbc9a7aceeb002b9ba53cc5af8d66395b4dd
SSDEEP

49152:SntQNMSPbcBVQej/1INLJqqfHf0r7rKu60/:+2NPoBhz1aFqQHf0r7r7j

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2175) 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
4452	mssecsvc.exe
3028	mssecsvc.exe
1828	tasksche.exe

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

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 4988	4732	rundll32.exe	83
PID 4732 wrote to memory of 4988	4732	rundll32.exe	83
PID 4732 wrote to memory of 4988	4732	rundll32.exe	83
PID 4988 wrote to memory of 4452	4988	rundll32.exe	84
PID 4988 wrote to memory of 4452	4988	rundll32.exe	84
PID 4988 wrote to memory of 4452	4988	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0068c739eb772e954bcd76c4b013fdd_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4732
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d0068c739eb772e954bcd76c4b013fdd_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4988
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4452
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1828

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:3028

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
a9cb44129a7327e44d4dd57b66b6bcb8

SHA1
235dbbfb1d83e7bdc42438a259b73c019bd3cefd

SHA256
921c7e54eb8e8697f6d0035ad6113ca818c8fa9b3eb8853ea0f6a6019a8dea1e

SHA512
92c6dadedcad2bc4f2ed8ab73708f1cd682d155ded1f4e24095848933c07e00cba2d1074a6f3fd3ee3a59ff1d8ae1f3d6e35b417324fab2fc5a42fbb5b7cbdf8

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
682fad8db4fece183dd0ac77a20b49d4

SHA1
e01e60db1bfe0b5d508be835d298f7627f3a6bdf

SHA256
b2f53f4ea199e8e954335db47ac89dc7352f321af705d487de5cbe3e141d9136

SHA512
9481593c5da29375a1617212e3f2b3ed6ff75ee532d02178ebab02a966c750f0a1fbade26b409c265bbd5ce0b176c73b7a1383727e6181ab5442720c6f7e4977

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