wannacry | b7f4cbd27d4447e9208e4b03736c8d124593d3f20da730d546cb63cf9c38c806

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-08-2022 19:32

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General

Target

0b1de834200f2a3f108ef2e9a30c111c.dll
Size

5.0MB
MD5

0b1de834200f2a3f108ef2e9a30c111c
SHA1

e1b9ec0d0afa57a4c6aaa3d37df03d8878c24a85
SHA256

b7f4cbd27d4447e9208e4b03736c8d124593d3f20da730d546cb63cf9c38c806
SHA512

7392df838a21348fa3d040c84b9339fc2dd0447c0c6f79c195565f80274b950485736b892104c2fcb1e006da4a67ac00382ad9f3f8e18bde822f7222037bc34e
SSDEEP

49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEc:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2605) 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

4420 mssecsvc.exe
100 mssecsvc.exe
2872 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
4420	mssecsvc.exe
100	mssecsvc.exe
2872	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\IntranetName = "1"	mssecsvc.exe
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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2996 wrote to memory of 2140	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 2140	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 2140	2996	rundll32.exe	rundll32.exe
PID 2140 wrote to memory of 4420	2140	rundll32.exe	mssecsvc.exe
PID 2140 wrote to memory of 4420	2140	rundll32.exe	mssecsvc.exe
PID 2140 wrote to memory of 4420	2140	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b1de834200f2a3f108ef2e9a30c111c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b1de834200f2a3f108ef2e9a30c111c.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2140

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4420

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2872

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:100

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
4fa3d0d7d1b0168e2466a2009bb7cd7b

SHA1
1c9bf4dadc66caea9b379de963c9ee17d984e884

SHA256
bd7db1d396359de49aca7c8d8efbb509766e2e8b18cb2a9365412005cd6fee1c

SHA512
bf67901a19638f269ae265907cba0dec0a43bb0508114ccdd993fb5f0bc7f28a5c09342b35288517e3e78b9470070ce93ef81fc72ebabebb3e89019a11e1bad7

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

MD5
4fa3d0d7d1b0168e2466a2009bb7cd7b

SHA1
1c9bf4dadc66caea9b379de963c9ee17d984e884

SHA256
bd7db1d396359de49aca7c8d8efbb509766e2e8b18cb2a9365412005cd6fee1c

SHA512
bf67901a19638f269ae265907cba0dec0a43bb0508114ccdd993fb5f0bc7f28a5c09342b35288517e3e78b9470070ce93ef81fc72ebabebb3e89019a11e1bad7

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

MD5
4fa3d0d7d1b0168e2466a2009bb7cd7b

SHA1
1c9bf4dadc66caea9b379de963c9ee17d984e884

SHA256
bd7db1d396359de49aca7c8d8efbb509766e2e8b18cb2a9365412005cd6fee1c

SHA512
bf67901a19638f269ae265907cba0dec0a43bb0508114ccdd993fb5f0bc7f28a5c09342b35288517e3e78b9470070ce93ef81fc72ebabebb3e89019a11e1bad7

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

MD5
436db9e51d1ef68c6630961d5170df1d

SHA1
10c0b3f11224244379f2fb2e81f0119d6b3d69a5

SHA256
9c798f466576044df5a6c3c9366c81c4d1e5e2ba37bbec90fc78522da465a73a

SHA512
18de6482a761b445f183973580234f373430a65bf9802e9cf7a65730b596a7c99effa60f2a00c5389ab3a6abcd423da558494d23d854914f27a43a76e5ce7414

Download Submit
memory/2140-132-0x0000000000000000-mapping.dmp

Download
memory/4420-133-0x0000000000000000-mapping.dmp

Download