wannacry | 2c6bd4b55e8c4e65c81b3ccd1ac3dc7443044ffd4755a82591eddc692e64f26b

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
31-05-2024 08:04

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General

Target

8656409feada07aaff61398cfbdb9210_JaffaCakes118.dll
Size

5.0MB
MD5

8656409feada07aaff61398cfbdb9210
SHA1

060063fa8089968f22fcab0fdceda81b0eb9e0ea
SHA256

2c6bd4b55e8c4e65c81b3ccd1ac3dc7443044ffd4755a82591eddc692e64f26b
SHA512

11b98bc4eb130268fa05db6715b68146aa6adb917fae475ceb7fb130f4467a4ab3406c9f64c2a04636107518842f01a836ed591c2fbce796c5747beffce3376e
SSDEEP

98304:+8qPoBhz1aRxcSUDk36SA7xWa9P593R8yAVp2H:+8qPe1Cxcxk3ZAkadzR8yc4H

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3217) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2312 mssecsvc.exe
2244 mssecsvc.exe
2612 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

pid	process
2312	mssecsvc.exe
2244	mssecsvc.exe
2612	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Processes:

rundll32.exemssecsvc.exe

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

Processes:

mssecsvc.exe

description ioc process

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

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

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

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 3012 wrote to memory of 2124	3012	rundll32.exe	rundll32.exe
PID 2124 wrote to memory of 2312	2124	rundll32.exe	mssecsvc.exe
PID 2124 wrote to memory of 2312	2124	rundll32.exe	mssecsvc.exe
PID 2124 wrote to memory of 2312	2124	rundll32.exe	mssecsvc.exe
PID 2124 wrote to memory of 2312	2124	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8656409feada07aaff61398cfbdb9210_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3012

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8656409feada07aaff61398cfbdb9210_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2124

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2312

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2612

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:2244

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

C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
157a5dcea7c7e14bbb08b01fbfabd0bd

SHA1
994ab6c622a592a1482013d698926576ce140e54

SHA256
1cc756a41e128e04b5efb7e70824ced967753c7003cd9de8e4ef56a7187de99d

SHA512
755d208def9e785546c417a0b47ff3de886b2ee200930cc73ea49babdc94514dc732ad680f45f817ca24c1c6dc2a30c318991a4d785f57d04d3bc348124e5607

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
94ff6fc10c93b9370a8e767b71cec0b5

SHA1
4b5c1bf5fe236914ab7bd19f909de5380b09d65a

SHA256
b657ab2c954e255f0ec16a9182728312fae77462f206881caf65ebc3854b85c0

SHA512
1b96f910def2c5fc1d0d307cddd94e8ecd0fa8004671d9a55b1ecc9c29a2fa6785e20fa2d4818f0e413789234f633deee02302567a4526cbf08155e879b97cea

Download Submit
memory/2244-8-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/2244-15-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/2312-6-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download
memory/2312-14-0x0000000000400000-0x0000000000A6B000-memory.dmp

Filesize
6.4MB

Download