wannacry | 4e8eb80f86bae675ffb9249bf51adb34560917eb176558f365ed6bf178a07da1

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 19:14

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General

Target

e9ce08afa289a2c8af4a638a753c6507_JaffaCakes118.dll
Size

5.0MB
MD5

e9ce08afa289a2c8af4a638a753c6507
SHA1

90bc012dfa05a751a6889d62f6ade512583bcfda
SHA256

4e8eb80f86bae675ffb9249bf51adb34560917eb176558f365ed6bf178a07da1
SHA512

83dff55ce1b77db6b51559a2cca8ac43126d6275dfa1b6ad69aeebc458842b633249ab1734c49e2d2ea6d7be550ddc7bc39c5b3f08f698b9c088f40aa6111a19
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYSR+7H:SnAQqMSPbcBVQej/1/R+

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3225) 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
1164	mssecsvc.exe
3328	mssecsvc.exe
1440	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	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
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 1188 wrote to memory of 2552	1188	rundll32.exe	82
PID 1188 wrote to memory of 2552	1188	rundll32.exe	82
PID 1188 wrote to memory of 2552	1188	rundll32.exe	82
PID 2552 wrote to memory of 1164	2552	rundll32.exe	83
PID 2552 wrote to memory of 1164	2552	rundll32.exe	83
PID 2552 wrote to memory of 1164	2552	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9ce08afa289a2c8af4a638a753c6507_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9ce08afa289a2c8af4a638a753c6507_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1164
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1440

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:3328

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
31c997c17202d1aeec62329cb90dd00d

SHA1
ac78f7c6f6c600f5890d7dcbf51c40b775ab4814

SHA256
7bc947804a598b209e546c08afa29d8e82448fdacf4c6d147ce721c7b764181c

SHA512
297351bf5f3f746d177c96582f1c856ed38410cdb4dd22d0cb5859d45ddfec7818d46885c12b41b9301a50c9a1d2532f5b3483a088050c0aafe96dad1d5df49f

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
8d2b38e8eeafe269d053c8fd41bd5fb3

SHA1
09f485dd337bc79d22c211508170f4b8fec35086

SHA256
47515da81eea0f2f7c0c2f54f5cab028cb00c1b3e7b7ab8333fea3e16f0de904

SHA512
3c97dacb8aa6d5180840a8820127a4b6d67ae5376404ed878c61c7dae27757100d3d55c226739a15b04402cf156d88ebe9406798c5f2a3d0f8e637de43c4dfc6

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