wannacry | c0f31771fbc18ba5e68ff7cd29cdf82bc2806a5b6652019ba820ab6146474bee

Analysis

max time kernel
159s
max time network
165s
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, 07:29

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General

Target
22606ce9ea8247dc647a9cd236bf54fa.dll
Size 5.0MB
Sample220720-ja8yaadbb6
SHA256 c0f31771fbc18ba5e68ff7cd29cdf82bc2806a5b6652019ba820ab6146474bee
MD5 22606ce9ea8247dc647a9cd236bf54fa
SHA1 55d270de555aa2a10abb06a33f6dfe39ab904ed7
SHA512 95e9d65797abcef45fbef2078f5ebbd10fb76ac765ca74b725ad01dd17938e55bbdf7f646f0e6776080e33089ff34c0448b10cbdd57614a0677ff2ec1caf1242
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 (3220) 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
3032	mssecsvc.exe
4332	mssecsvc.exe
3460	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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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 1260 wrote to memory of 1632	1260	rundll32.exe	77
PID 1260 wrote to memory of 1632	1260	rundll32.exe	77
PID 1260 wrote to memory of 1632	1260	rundll32.exe	77
PID 1632 wrote to memory of 3032	1632	rundll32.exe	78
PID 1632 wrote to memory of 3032	1632	rundll32.exe	78
PID 1632 wrote to memory of 3032	1632	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\22606ce9ea8247dc647a9cd236bf54fa.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\22606ce9ea8247dc647a9cd236bf54fa.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3032
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3460

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4332

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 903500a609c67ad825f1296de11e995d697fef12532f69255717b83ad8d3ee26
MD5 69e48d36e798b9d6fbd3385ebe770eb8
SHA1 79bdd0939fedcf82b043697a76e9fea9872471d4
SHA512 dc2634d96837231de4f98ecbe684a8712a09a6fe34e8868524dd73aa47224f771f536391dd3410ee9cf677b089b243ff12b5e5c83a0585944fe3f98ea781c3bd
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXhdq/:2nAQqMSPbcBVQej/1INRx+TSqTdX
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 903500a609c67ad825f1296de11e995d697fef12532f69255717b83ad8d3ee26
MD5 69e48d36e798b9d6fbd3385ebe770eb8
SHA1 79bdd0939fedcf82b043697a76e9fea9872471d4
SHA512 dc2634d96837231de4f98ecbe684a8712a09a6fe34e8868524dd73aa47224f771f536391dd3410ee9cf677b089b243ff12b5e5c83a0585944fe3f98ea781c3bd
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXhdq/:2nAQqMSPbcBVQej/1INRx+TSqTdX
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 903500a609c67ad825f1296de11e995d697fef12532f69255717b83ad8d3ee26
MD5 69e48d36e798b9d6fbd3385ebe770eb8
SHA1 79bdd0939fedcf82b043697a76e9fea9872471d4
SHA512 dc2634d96837231de4f98ecbe684a8712a09a6fe34e8868524dd73aa47224f771f536391dd3410ee9cf677b089b243ff12b5e5c83a0585944fe3f98ea781c3bd
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXhdq/:2nAQqMSPbcBVQej/1INRx+TSqTdX
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 0af0985542c48eef5a73d94b426ad3d798c4f89f187fbae1a10e45dbcf7e87d2
MD5 3b2dfe5113b9d19d6dc5cba11a2cc871
SHA1 74b5627044f2edcba3d2b53afecdbd710bdd22fa
SHA512 c7751f1b5fab9646489ae0abad54570422ee2f7d0c7f5fc98ca389ce50f114c433aa0c3850d53dbc3cdbe067fc22f15e62d16d519cccffcf6681e367bd6fe974
SSDEEP 24576:nQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVXhdq/9:nQqMSPbcBVQej/1INRx+TSqTdXK
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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