wannacry | f1c24197488a2e5a4c77a4dd28f9d20376a5584d818e2dc13d57effcb840efe3

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
07-09-2024 19:26

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General

Target

d2ab38a430adee22aecdb65bce96b6cf_JaffaCakes118.dll
Size

5.0MB
MD5

d2ab38a430adee22aecdb65bce96b6cf
SHA1

9fb535b66368dc7e6a682aa37efbc26e39af6e82
SHA256

f1c24197488a2e5a4c77a4dd28f9d20376a5584d818e2dc13d57effcb840efe3
SHA512

99af7008e6f7a8023acc70211c810c377d93af1a1c83f6f673087727508917aa12115e61ddee0f2742d7b6727bf8b6f583b52239331f9767eb48e256e77d5d98
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAR:+DqPoBhz1aRxcSUDk36SAE

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3044) 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
4756	mssecsvc.exe
4856	mssecsvc.exe
3404	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 4424 wrote to memory of 2860	4424	rundll32.exe	83
PID 4424 wrote to memory of 2860	4424	rundll32.exe	83
PID 4424 wrote to memory of 2860	4424	rundll32.exe	83
PID 2860 wrote to memory of 4756	2860	rundll32.exe	86
PID 2860 wrote to memory of 4756	2860	rundll32.exe	86
PID 2860 wrote to memory of 4756	2860	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2ab38a430adee22aecdb65bce96b6cf_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2ab38a430adee22aecdb65bce96b6cf_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4756
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3404

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:4856

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
ed4d39949ed64480aa94fe38ad3a01b1

SHA1
d385c24d68368ba8ba4d6c54cd3692e1785d8054

SHA256
b6c6cfcd23110c4b5a88a7c18906beae266b05cf1440797a5ef36e79010ce93b

SHA512
be6997f5dbd70365b607669e27c5a67392c8a042d614b7b48dbba17007164dcb2ecbe74ba3affb37857fbf013c1817a577bd057879446fe521fc337499e83329

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
bd57709b3007357d058efdf3ba4b3422

SHA1
a7f86e5df44469235fb4f5287c031c3abd700cdd

SHA256
e0266212b7270793ddc021d16654a6dea24795e2ab1e58b2f86b9bf44bb8ade2

SHA512
711a627ac026b90457cf2719adfca7be8704ac3f2e334ecfa9beba3f0347c5fc354d22ad8d8298cf86c0594c119982b57bcbbc976c5f03fc6a140923603a391e

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