wannacry | c7c1b3d588adc6f9c5d4f9cd20991d6272deb9e414c5ee41e966256d34f8f24e

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
20-09-2024 11:47

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General

Target

ed83a264c15eed00180b921b5669a0f3_JaffaCakes118.dll
Size

5.0MB
MD5

ed83a264c15eed00180b921b5669a0f3
SHA1

8949c64f65c678c9b593ea35ac1dfa97af18f713
SHA256

c7c1b3d588adc6f9c5d4f9cd20991d6272deb9e414c5ee41e966256d34f8f24e
SHA512

f7573dfd9f0d7761b635f0895abeee84d9d626a6649b31ab6d5a71a0b0bc1f8c3336278df32e11af47201aa3270c128c77c14f61240f6939b5c5f301598d65e8
SSDEEP

49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQtvxJM0HS:TDqPoBhz1aRxcSUDkQxWaS

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
2880	mssecsvc.exe
1120	mssecsvc.exe
944	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
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 3452 wrote to memory of 5004	3452	rundll32.exe	82
PID 3452 wrote to memory of 5004	3452	rundll32.exe	82
PID 3452 wrote to memory of 5004	3452	rundll32.exe	82
PID 5004 wrote to memory of 2880	5004	rundll32.exe	83
PID 5004 wrote to memory of 2880	5004	rundll32.exe	83
PID 5004 wrote to memory of 2880	5004	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed83a264c15eed00180b921b5669a0f3_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ed83a264c15eed00180b921b5669a0f3_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5004
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2880
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:944

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:1120

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
686b27de08ff86e9298de7ab0604520d

SHA1
954f88574ea5ccaf363ef7a4096a824389896fdf

SHA256
299101fcd2e0582f3a6e23a25791eded6c92562838c4807ab4b61e8cf773a3b4

SHA512
af20a5005ebe97deb7cc7c0fee9f53f27ffe425103c9b665f436dca4a7946ceab536aa4ae90d6bee8192ee0d578d93227f0feb3445517fdd87f89f3e8cde113c

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
54f3a772371fdb509a6cb59989daf3a0

SHA1
85a7693231e4b2e6e4be02dd56308537ab39a7a0

SHA256
7c89c05b0c492bd4e3e9bbb2311e9216d94e213caa289e2c3eced5dc6c490572

SHA512
6a2f79c933735467ab90685d0908673a01c47e33cd126a70edc475440c0db52115a69389a2d2f1a9091b66d51fd1b1dbcc31b0ac3f9208ed8ab2bc2e0d7dd679

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