wannacry | 940fd571dc0febba4dd014632ec2b18c76b0e992c490c123705b73d45c135892

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 07:00

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General

Target
abbd2ebdbc07b344097866ba50ee60e5.dll
Size 5.0MB
Sample220720-hsm8vsdddj
SHA256 940fd571dc0febba4dd014632ec2b18c76b0e992c490c123705b73d45c135892
MD5 abbd2ebdbc07b344097866ba50ee60e5
SHA1 cd14b72ad5f4cd0e2ee14c11adcde8b8ea266f2f
SHA512 a849a80e83476e379466631aedb5b13a24f1a9416af9e5e44d7b8c103e9f1c6100783312ee25ed9261980055e107b7e507a653d557ede6e3f546ba5da2d49c7a
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 (3126) 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
3940	mssecsvc.exe
1412	mssecsvc.exe
4412	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
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 1940	332	rundll32.exe	82
PID 332 wrote to memory of 1940	332	rundll32.exe	82
PID 332 wrote to memory of 1940	332	rundll32.exe	82
PID 1940 wrote to memory of 3940	1940	rundll32.exe	83
PID 1940 wrote to memory of 3940	1940	rundll32.exe	83
PID 1940 wrote to memory of 3940	1940	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\abbd2ebdbc07b344097866ba50ee60e5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:332
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\abbd2ebdbc07b344097866ba50ee60e5.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:1940
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3940
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4412

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1412

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 c94bd276c33d837408e3b387185346f35c6f588f1e88c43ef9b4b4d53bf65995
MD5 8d08979e765508f3379ae6df871eb315
SHA1 d544d4529d737d5715b4266faecae26ebb7f3244
SHA512 8e57eeb8084a6b7c72b5531b6ebcae8044640903a3686d50e345397274179a863090ffae0bbb81ce2c18e2fc69e636daf307299c65702476965760aa2ca31e46
SSDEEP 98304:yDqPTxcSUDk36SAEdhvxWa9P593R8yAVp2HI:yDqPTxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c94bd276c33d837408e3b387185346f35c6f588f1e88c43ef9b4b4d53bf65995
MD5 8d08979e765508f3379ae6df871eb315
SHA1 d544d4529d737d5715b4266faecae26ebb7f3244
SHA512 8e57eeb8084a6b7c72b5531b6ebcae8044640903a3686d50e345397274179a863090ffae0bbb81ce2c18e2fc69e636daf307299c65702476965760aa2ca31e46
SSDEEP 98304:yDqPTxcSUDk36SAEdhvxWa9P593R8yAVp2HI:yDqPTxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 c94bd276c33d837408e3b387185346f35c6f588f1e88c43ef9b4b4d53bf65995
MD5 8d08979e765508f3379ae6df871eb315
SHA1 d544d4529d737d5715b4266faecae26ebb7f3244
SHA512 8e57eeb8084a6b7c72b5531b6ebcae8044640903a3686d50e345397274179a863090ffae0bbb81ce2c18e2fc69e636daf307299c65702476965760aa2ca31e46
SSDEEP 98304:yDqPTxcSUDk36SAEdhvxWa9P593R8yAVp2HI:yDqPTxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 e4920582cc8fc7c36e91f4614060b387d611486410c917c83c7cfea43483847e
MD5 b96b51ea844f4f2ce69400e855c40950
SHA1 ca87c6cb96291a4c40ba1ebad80c3eba3c33b128
SHA512 fe73b8dd5a0317fdfa4527d0ab62e84be9167a401008956629ff275e95cca5c64678da724fd6afc159dd0b38dee0860cb9a2a16d116b867fdbbc514f7cc070fd
SSDEEP 98304:QqPTxcSUDk36SAEdhvxWa9P593R8yAVp2Hj:QqPTxcxk3ZAEUadzR8yc4Hj
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