wannacry | c57649669ee9311d3e52ee536a38bb9731279f9e657718cd22110be01267a432

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15-09-2024 06:17

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General

Target

e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll
Size

5.0MB
MD5

e1deb818ce0ec6b71634d1c46d41d7b4
SHA1

064c8156b32115de90de97015d5ac61c3ac65045
SHA256

c57649669ee9311d3e52ee536a38bb9731279f9e657718cd22110be01267a432
SHA512

75b0b55e62ba42e03eb5a200febcef0fc218dd84887526e62bbde0d15ad1422d37036214a9f23978112e57fc779c209ecaff3a87a29abe56afa1dbf16c91df78
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEc:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3307) 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
684	mssecsvc.exe
4316	mssecsvc.exe
908	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	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 2464 wrote to memory of 3840	2464	rundll32.exe	84
PID 2464 wrote to memory of 3840	2464	rundll32.exe	84
PID 2464 wrote to memory of 3840	2464	rundll32.exe	84
PID 3840 wrote to memory of 684	3840	rundll32.exe	85
PID 3840 wrote to memory of 684	3840	rundll32.exe	85
PID 3840 wrote to memory of 684	3840	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3840
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:684
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:908

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:4316

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
c6c5d82b78b441d3ea620ad93f82387b

SHA1
01d183659885faa8fe1adbcec810b80b679e5800

SHA256
c3bbf2ebdffac24fda24289d47ba01b50d85f5fdd0e7d7d9d389427256fda14f

SHA512
fd0115f47aa373c74c1f727fbaac3c2fa2ae877ae69d587668297e174a1f47e5a20f5b0f5ddd4e6c7e6fd5a74a3793ae1287de4695a0f860841bfbe76236007f

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
df3b3b0fec9986f94729d695c0def7d8

SHA1
e8f57b3ed28c6079988319d037ee26c6f435251d

SHA256
d67beea4e4b3fdac097709114a9b4a6a1218d0d5f65cc10b45ca0a24dd41f38b

SHA512
d0fe55b1df92105a2f1df446bf3d87d82c93d145631b5480c76b6d1a900f7aaa63d17bcff6c9fc0f77282172dc531834870f08f850010f3757b1fc4f265b87b9

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