wannacry | 0db9746d82f929f89c45aa86c9ce9ab2698f88bc936d8643042ca3ed0c67bdf9

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
19/07/2024, 17:15

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General

Target

5ce475f1319e2fc3ce180481fe2076c5_JaffaCakes118.dll
Size

5.0MB
MD5

5ce475f1319e2fc3ce180481fe2076c5
SHA1

db0f7f265aecbd9540c1afbadc76f194507deab5
SHA256

0db9746d82f929f89c45aa86c9ce9ab2698f88bc936d8643042ca3ed0c67bdf9
SHA512

495af72ae45aa4d6674f89e727cfe6bd27d7e32ecf96ab1edabdef289245671fd469497e1a5d2bc807e6812a2307d3eb0f954a82a8e1f075df4326088d85b870
SSDEEP

12288:ywbLgPluxQhMbaIMu7L5NVErCA4z2g6rTcbckPU82900N0Xo3LLFzTM8bQr28mw2:JbLgdeQhfdmMSirYbcMNnBm

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
3056	mssecsvc.exe
2512	mssecsvc.exe
2260	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 System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 904 wrote to memory of 1864	904	rundll32.exe	30
PID 1864 wrote to memory of 3056	1864	rundll32.exe	31
PID 1864 wrote to memory of 3056	1864	rundll32.exe	31
PID 1864 wrote to memory of 3056	1864	rundll32.exe	31
PID 1864 wrote to memory of 3056	1864	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5ce475f1319e2fc3ce180481fe2076c5_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:904
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\5ce475f1319e2fc3ce180481fe2076c5_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1864
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3056
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2260

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2512

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

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
83dc595d785f0390988dc93db83e54e7

SHA1
106d659897adb5ad91dd9e2cb81daae25db2caa8

SHA256
4da565d82edd3c7b4ea2b1c47010b4676365bc800bd793cb205156da8f8563e2

SHA512
9fedc63040eed6b522a56d82ab4a38b8c778f5e3fdf9f9792ee6d60fab67b04d15a7eb7efb97ebce5336eecdd8e58339b3ba787446ac8f2feddb63afe1b52341

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
1456612fadf028f514760ab4e5083141

SHA1
ef1b7b6d35686c4423b41dc8cd45ed55741c5797

SHA256
b6590fb7124a01cd8b1d1fd60bf992d5ed3c8fe05f707a87c57c60d5b90fe543

SHA512
4a0a578c75ed4e04d6ca80d553fb1ef1b0a5d036c9e19a386515e98cd3824d4b155946a104a68f7631a8e19b7330d7ba8668ff7093140353fcdd84afe957d44b

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