wannacry | 32c308d847c7ac84adb394f4a6676750b06990422d582cbb84f06673ad0b12ff

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
16/09/2024, 10:55

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General

Target
e49ea3d80504cfbd3a1038ef55cdc424_JaffaCakes118.dll
Size 5.0MB
Sample240916-m1gs9stdma
SHA256 32c308d847c7ac84adb394f4a6676750b06990422d582cbb84f06673ad0b12ff
MD5 e49ea3d80504cfbd3a1038ef55cdc424
SHA1 abcbef0c12870109a8c33140387f26b33f29bb71
SHA512 e8767a5ac614caa11cad56376132c995a9b98888525461846a34c9687d8c39fd7a6fe0a8761a60086f55202d6b0e2035ca9e984e4f8ec621b42257736be6abd6
SSDEEP 98304:TDqPoB0RxcSUDk36SAEdhvxWa9P593R8yAVp2H:TDqPDxcxk3ZAEUadzR8yc4H
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3283) 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
3108	mssecsvc.exe
1304	mssecsvc.exe
1428	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
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 3444 wrote to memory of 4532	3444	rundll32.exe	82
PID 3444 wrote to memory of 4532	3444	rundll32.exe	82
PID 3444 wrote to memory of 4532	3444	rundll32.exe	82
PID 4532 wrote to memory of 3108	4532	rundll32.exe	83
PID 4532 wrote to memory of 3108	4532	rundll32.exe	83
PID 4532 wrote to memory of 3108	4532	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e49ea3d80504cfbd3a1038ef55cdc424_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e49ea3d80504cfbd3a1038ef55cdc424_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4532
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3108
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1428

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:1304

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

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 e52b3d22da10865835fab044dc5e17f553642507f88a5c10b403a0660a78e80e
MD5 04e0a341daca7ed3b12e2f3301892316
SHA1 4ffc02cf47744d847d9a798a974716cc04d85efe
SHA512 1f03360504a30bfd8f06873b963d5dcc6dfb9b2431ef018cedfc5cda762db3e62642b518e30a46acb1fdb60898c6ea74b1a115a98e98527655a3b9fb25604cc4
SSDEEP 98304:XDqPoB0RxcSUDk36SAEdhvxWa9P593R8yAVp2HI:XDqPDxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 ce652a0b8fad09e74898ff119811ccc3015a53dae437830a9f081a77821758d9
MD5 b314ef9a463fd4b735264a57b62a4c8f
SHA1 9d44610c48ff709e38c1d82c2cfcdd789c4cbede
SHA512 00efc8a7494fa84045bc0830c55858d5d41599d6d07d84988e9512139839c3ff2caca11e0d240435b922385d61c957d28146e53e33a304f402d9d1f73ebb1042
SSDEEP 98304:QqPoB0RxcSUDk36SAEdhvxWa9P593R8yAVp2Hj:QqPDxcxk3ZAEUadzR8yc4Hj
MD5 SHA1 SHA512 SSDEEP