wannacry | 5013a9fc3766f0c065d44c9f6a6a8c0101811d7df4860dd50cf627a0d28ed007

Analysis

max time kernel
150s
max time network
153s
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, 07:17

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General

Target
033f9150e241e7accecb60d849481871.dll
Size 5.0MB
Sample220720-h4cw9sdeck
SHA256 5013a9fc3766f0c065d44c9f6a6a8c0101811d7df4860dd50cf627a0d28ed007
MD5 033f9150e241e7accecb60d849481871
SHA1 09067fd23539df1ece704a92b2dca8e32f20f7c8
SHA512 e08d2eb9edacbda6dfc7b2a153eaa7f38fe967876df28230e0cc88d3511d8f867f32314f49e761f402d1ff6f10fb411546ca549d855d9676992788670d512015
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 (3309) 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
3548	mssecsvc.exe
2984	mssecsvc.exe
3628	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 2572 wrote to memory of 2640	2572	rundll32.exe	79
PID 2572 wrote to memory of 2640	2572	rundll32.exe	79
PID 2572 wrote to memory of 2640	2572	rundll32.exe	79
PID 2640 wrote to memory of 3548	2640	rundll32.exe	80
PID 2640 wrote to memory of 3548	2640	rundll32.exe	80
PID 2640 wrote to memory of 3548	2640	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\033f9150e241e7accecb60d849481871.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\033f9150e241e7accecb60d849481871.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3548
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3628

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2984

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 79f1263d4f4c1c3fcb3698f6ebb2214999e4fc462cc15f5fe9f366c1e44d2bb8
MD5 272d02d9694b6108ce0cb93be8af8f16
SHA1 6e34070d194e33e9eef908f71e6cc597d3283f5d
SHA512 62a7fa4c23e00e41cde6f00270eadc4e17c2b3fc40d5b11526c2791a2aab7f42aee637901c80226d6526c9c57c31b764ccf494b1301016b0111e460c6cd5dc75
SSDEEP 98304:ZDqPoBhz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:ZDqPe1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 79f1263d4f4c1c3fcb3698f6ebb2214999e4fc462cc15f5fe9f366c1e44d2bb8
MD5 272d02d9694b6108ce0cb93be8af8f16
SHA1 6e34070d194e33e9eef908f71e6cc597d3283f5d
SHA512 62a7fa4c23e00e41cde6f00270eadc4e17c2b3fc40d5b11526c2791a2aab7f42aee637901c80226d6526c9c57c31b764ccf494b1301016b0111e460c6cd5dc75
SSDEEP 98304:ZDqPoBhz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:ZDqPe1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 79f1263d4f4c1c3fcb3698f6ebb2214999e4fc462cc15f5fe9f366c1e44d2bb8
MD5 272d02d9694b6108ce0cb93be8af8f16
SHA1 6e34070d194e33e9eef908f71e6cc597d3283f5d
SHA512 62a7fa4c23e00e41cde6f00270eadc4e17c2b3fc40d5b11526c2791a2aab7f42aee637901c80226d6526c9c57c31b764ccf494b1301016b0111e460c6cd5dc75
SSDEEP 98304:ZDqPoBhz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2HI:ZDqPe1Cxc7k3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 efbc1542b29b798dbbeeb531bbb4b84d422843f9c66d3aff9f301ab9296d8b4c
MD5 c88722ef42a6ee08cbed91406ea5c0e5
SHA1 643960f48a68ba0778621871f37389215642c423
SHA512 5381f40e08c425f96cc8fe2c3e76c4440d39773889e5d137111441805b1786df5f5b38ed60c9461243f8fcb8078d68174c066695ab9b15a96ba5f6a348950f18
SSDEEP 98304:QqPoBhz1aRxcSUZk36SAEdhvxWa9P593R8yAVp2Hj:QqPe1Cxc7k3ZAEUadzR8yc4Hj
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