wannacry | f8bf60b30d7503ecb128882a9f6b3f3c29d25006273beae8db815d3ea8955ca6

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, 07:10

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General

Target
48a038a7032b1fc945a11eeeebf0037a.dll
Size 5.0MB
Sample220720-hzdb8schh7
SHA256 f8bf60b30d7503ecb128882a9f6b3f3c29d25006273beae8db815d3ea8955ca6
MD5 48a038a7032b1fc945a11eeeebf0037a
SHA1 919a7d6af7779539ae6523fc23aadaa9f00768d5
SHA512 e3eb297f1a5ff2bf97ca37187e38b4a5453539a8f0ec148a68701a62786b92aa9255868d599a8756d414200edb09f68550d3b12b22591f1451dee13d8787c9b3
MD5 SHA1 SHA512

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 Scanning
T1046

Executes dropped EXE 3 IoCs

pid	Process
4936	mssecsvc.exe
2748	mssecsvc.exe
944	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 Scanning
T1046

Drops file in Windows directory 2 IoCs

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

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 4668	560	rundll32.exe	76
PID 560 wrote to memory of 4668	560	rundll32.exe	76
PID 560 wrote to memory of 4668	560	rundll32.exe	76
PID 4668 wrote to memory of 4936	4668	rundll32.exe	77
PID 4668 wrote to memory of 4936	4668	rundll32.exe	77
PID 4668 wrote to memory of 4936	4668	rundll32.exe	77

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\48a038a7032b1fc945a11eeeebf0037a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:560
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\48a038a7032b1fc945a11eeeebf0037a.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4668
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4936
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:944

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2748

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

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 e2861dbf0447d54dc4801f31702e5e9a28a9b3aced24124fa3e0c982dd28099c
MD5 76e6852398a625689391745888ffe25f
SHA1 0496432ff23d1203cb051faf06fbac21333d2734
SHA512 8ba3ba8acc748d2038390b2e323cc1e06b38078a5d77446241d27bddc909c268e32ff269c0504b46147f230baac126b2fbf5f88ef36995aaf874a79bcd181df7
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQbAMEcaE:XDqPoBhz1aRxcSUDkU5
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 e2861dbf0447d54dc4801f31702e5e9a28a9b3aced24124fa3e0c982dd28099c
MD5 76e6852398a625689391745888ffe25f
SHA1 0496432ff23d1203cb051faf06fbac21333d2734
SHA512 8ba3ba8acc748d2038390b2e323cc1e06b38078a5d77446241d27bddc909c268e32ff269c0504b46147f230baac126b2fbf5f88ef36995aaf874a79bcd181df7
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQbAMEcaE:XDqPoBhz1aRxcSUDkU5
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 e2861dbf0447d54dc4801f31702e5e9a28a9b3aced24124fa3e0c982dd28099c
MD5 76e6852398a625689391745888ffe25f
SHA1 0496432ff23d1203cb051faf06fbac21333d2734
SHA512 8ba3ba8acc748d2038390b2e323cc1e06b38078a5d77446241d27bddc909c268e32ff269c0504b46147f230baac126b2fbf5f88ef36995aaf874a79bcd181df7
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQbAMEcaE:XDqPoBhz1aRxcSUDkU5
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 8802888a702f4354abc1f7e1e982a79727496f6fa7124d0aae21373ddabc7866
MD5 cb14cba37a9d11e31f50c11c3943386c
SHA1 1e232363fac290aef3e62b1f713f7ac79be4b81e
SHA512 51bb5f727681a1dec089c978e5657e7103fd8d058bc741123225321b663544cd4d314eebc5de8174f9ce6914cc2edcf6b3df47a0df1991b6e2b088bd19f8f19b
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQbAMEcaE:QqPoBhz1aRxcSUDkU5
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads