wannacry | 69d9ac6b3533520ec458645a14a7538da4dcbad315aeb8737017f27d5c1c62d9

Analysis

max time kernel
151s
max time network
154s
platform
windows7_x64
resource
win7-20220718-en
resource tags

arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
submitted
20-07-2022 02:58

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General

Target

5c75788acca3a2efc5db41dc9c6330d8.dll
Size

5.0MB
MD5

5c75788acca3a2efc5db41dc9c6330d8
SHA1

67b88e3e3221cdd65d21641843ad55777f98194e
SHA256

69d9ac6b3533520ec458645a14a7538da4dcbad315aeb8737017f27d5c1c62d9
SHA512

b67d69a47b38057e09eca8a2f1235784c2786fcd218d837253fdf43724a01f2a08ce3152b0e5caf5da6a8cf3bb7efe8f7757554ae6bd2797c82bfc04c411692e

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1296) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1148 mssecsvc.exe
1952 mssecsvc.exe
1940 tasksche.exe

pid	process
1148	mssecsvc.exe
1952	mssecsvc.exe
1940	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 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 892 wrote to memory of 1816	892	rundll32.exe	rundll32.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe
PID 1816 wrote to memory of 1148	1816	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c75788acca3a2efc5db41dc9c6330d8.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:892

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c75788acca3a2efc5db41dc9c6330d8.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1816

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1148

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:1940

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:1952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe

Filesize
3.6MB

MD5
5a5fc66f983c4900a0a66b3f22df70a5

SHA1
dce4efd779d512b507619dfa4b18dee6c4856d63

SHA256
834bf0b3f4970a87789693bc40d8d2f52a0f1e06fb7427704c35836378dfb075

SHA512
a344ffca84fb8ea856afe06c04cd83bffc094f9946385a890d5dfcaa32c33ecfa1e4e805310efc358e276440c28996054434728c3d58ce90c84214f84c781b2d

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5a5fc66f983c4900a0a66b3f22df70a5

SHA1
dce4efd779d512b507619dfa4b18dee6c4856d63

SHA256
834bf0b3f4970a87789693bc40d8d2f52a0f1e06fb7427704c35836378dfb075

SHA512
a344ffca84fb8ea856afe06c04cd83bffc094f9946385a890d5dfcaa32c33ecfa1e4e805310efc358e276440c28996054434728c3d58ce90c84214f84c781b2d

Download Submit
C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
5a5fc66f983c4900a0a66b3f22df70a5

SHA1
dce4efd779d512b507619dfa4b18dee6c4856d63

SHA256
834bf0b3f4970a87789693bc40d8d2f52a0f1e06fb7427704c35836378dfb075

SHA512
a344ffca84fb8ea856afe06c04cd83bffc094f9946385a890d5dfcaa32c33ecfa1e4e805310efc358e276440c28996054434728c3d58ce90c84214f84c781b2d

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
8f1f756a4789b6cf57bb7b34ce42fa3d

SHA1
a4431c539f7d45401346854b6151a34857fb8237

SHA256
2e6dd230043ee174ac89cc0059da2840a92635893f70358a3d101372c3355021

SHA512
9887099fab7c7343f16bbcb2e85cddadb1138f5a76f9baa83599f658f24a0ed279ad688860f95f11cda07d039473ed85ca21603e44735e25ae44570c22af03e4

Download Submit
memory/1148-56-0x0000000000000000-mapping.dmp

Download
memory/1816-54-0x0000000000000000-mapping.dmp

Download
memory/1816-55-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download