wannacry | f725b6f45c23a844e1452ccc391290953b4790555f5891c5e54b1d106751b343

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2024, 21:29

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General

Target
48208773cf7a89f248c189ae161b4d93_JaffaCakes118.dll
Size 5.0MB
Sample240515-1b91each31
SHA256 f725b6f45c23a844e1452ccc391290953b4790555f5891c5e54b1d106751b343
MD5 48208773cf7a89f248c189ae161b4d93
SHA1 678ce1f655624d98ec507d258edb7e4316102cea
SHA512 1d271a6f1383119db647a474a5cf2db9ad2e825eede654a6050f6b4efba8de678eb3e419185b5e9d1b751466761674f1fe4298d6071e9e96124f1adce4f41c82
SSDEEP 49152:JnjQqMSPbcBVQej/1INRx+TSqTdX1HkQhk3R8yAH1plAH:d8qPoBhz1aRxcSUDk53R8yAVp2H
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 (3295) 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
1736	mssecsvc.exe
4284	mssecsvc.exe
4208	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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 1456	1208	rundll32.exe	82
PID 1208 wrote to memory of 1456	1208	rundll32.exe	82
PID 1208 wrote to memory of 1456	1208	rundll32.exe	82
PID 1456 wrote to memory of 1736	1456	rundll32.exe	83
PID 1456 wrote to memory of 1736	1456	rundll32.exe	83
PID 1456 wrote to memory of 1736	1456	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\48208773cf7a89f248c189ae161b4d93_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\48208773cf7a89f248c189ae161b4d93_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1456
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1736
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4208

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
PID:4284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 fd68f64e935a7fcf451e617491e546e257605d46771a80517f95bb944899ea3a
MD5 3e48f71880263f838f035dee163d5598
SHA1 2c6075456d2c5ea46b76ef359ada670d72dc9c5f
SHA512 4fe63bb231b29ef8d51181870e839be9369629ece575802e79067961606cfa42846a0430f454ef4d28a07a74afb525cbea1dcb4997dc21c0012b108b5f53e68a
SSDEEP 49152:VnjQqMSPbcBVQej/1INRx+TSqTdX1HkQhk3R8yAH1plAHI:Z8qPoBhz1aRxcSUDk53R8yAVp2HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 8fa5161e3be73ede1fac31c5f3d6276810b3244430237afd7a125d1d841ca428
MD5 10a0bd9a551e7e841f4c9c5203e0fbb2
SHA1 40c184d281e6a7aa7018aa0bf6c262c980269ffa
SHA512 6ebe6b359889eeaf762e744245161129ddd1f97ba3fbe3e2f92f1ec3067fe18f35e52f23d48447d2fdc7f6d3ba284fbf4979cd4d9e443776f4642675dc0ca9de
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQhk3R8yAH1plAHj:QqPoBhz1aRxcSUDk53R8yAVp2Hj
MD5 SHA1 SHA512 SSDEEP