wannacry | 7d1c223a17dba5e7b344d8beb89020715ce77a41e92592088ce4777514c06306

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 01:52

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General

Target

9fa2c063407eded38c48442015813197.dll
Size

5.0MB
MD5

9fa2c063407eded38c48442015813197
SHA1

4aab1c9155674604b3c3c90d72eba94f075b082c
SHA256

7d1c223a17dba5e7b344d8beb89020715ce77a41e92592088ce4777514c06306
SHA512

d22abb366119cbcfc891f993aef9725f5fa892ba3b5f867fc169817790b1454a289e43927bca8c35bfa752c83bade36c7440f1fa97d17b20233932d882168dc8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2566) 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

4276 mssecsvc.exe
3096 mssecsvc.exe
624 tasksche.exe
Drops file in Windows directory 2 IoCs

Processes:

mssecsvc.exerundll32.exe

description ioc process

File created C:\WINDOWS\tasksche.exe mssecsvc.exe
File created C:\WINDOWS\mssecsvc.exe rundll32.exe

pid	process
4276	mssecsvc.exe
3096	mssecsvc.exe
624	tasksche.exe

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

Modifies data under HKEY_USERS 5 IoCs

Processes:

mssecsvc.exe

description	ioc	process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4100 wrote to memory of 2980	4100	rundll32.exe	rundll32.exe
PID 4100 wrote to memory of 2980	4100	rundll32.exe	rundll32.exe
PID 4100 wrote to memory of 2980	4100	rundll32.exe	rundll32.exe
PID 2980 wrote to memory of 4276	2980	rundll32.exe	mssecsvc.exe
PID 2980 wrote to memory of 4276	2980	rundll32.exe	mssecsvc.exe
PID 2980 wrote to memory of 4276	2980	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9fa2c063407eded38c48442015813197.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4100

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9fa2c063407eded38c48442015813197.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2980

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4276

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:624

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3096

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
fe84ef281d07e0e04d170728eb49f0e2

SHA1
cd49b310512978bac31b09a1e493aa21830d718c

SHA256
4f0f71f49a473b72ad144387ee291610cc128cb03f487567b85e396bb519d6d8

SHA512
9dac0c45b9315040e10e5db613fd03fba03dcb9355f08db7842a0bcd81ba80e3831e59c99030bb20ab1f90ab186041dc4c4c2e6929cc5b9535b03af07716d00a

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
fe84ef281d07e0e04d170728eb49f0e2

SHA1
cd49b310512978bac31b09a1e493aa21830d718c

SHA256
4f0f71f49a473b72ad144387ee291610cc128cb03f487567b85e396bb519d6d8

SHA512
9dac0c45b9315040e10e5db613fd03fba03dcb9355f08db7842a0bcd81ba80e3831e59c99030bb20ab1f90ab186041dc4c4c2e6929cc5b9535b03af07716d00a

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
fe84ef281d07e0e04d170728eb49f0e2

SHA1
cd49b310512978bac31b09a1e493aa21830d718c

SHA256
4f0f71f49a473b72ad144387ee291610cc128cb03f487567b85e396bb519d6d8

SHA512
9dac0c45b9315040e10e5db613fd03fba03dcb9355f08db7842a0bcd81ba80e3831e59c99030bb20ab1f90ab186041dc4c4c2e6929cc5b9535b03af07716d00a

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

MD5
704c542fffcb94db0e810d6c45f77d9b

SHA1
ee248a611307e595d964b4ef2b466e2f779ab77a

SHA256
407cbb482baa54f328f944e3122584900ed3e0daec6b507b5570b151792b65eb

SHA512
3984a681a5eadd8ec517e84efa0d8be17a1db3cb0822be99ae8e1ca7ee95418a0b5804a0a74895b7bf82ca6685951d3a50827de58275162d1bf0b1b6dca59c13

Download Submit
memory/2980-130-0x0000000000000000-mapping.dmp

Download
memory/4276-131-0x0000000000000000-mapping.dmp

Download