wannacry | cb99a87b7aa2948a6229b949daad62ae9cbadef89969a8238b6f092de382edfa

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, 03:58

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General

Target
9591bd448a0e5a78a753a88e30ec8fd7.dll
Size 5.0MB
Sample220720-ejhegacbej
SHA256 cb99a87b7aa2948a6229b949daad62ae9cbadef89969a8238b6f092de382edfa
MD5 9591bd448a0e5a78a753a88e30ec8fd7
SHA1 f86eb21299ffaaafa3739fce1aae94686c5f769a
SHA512 504854b4d0d7df272a042501cc7135d943084449adce56ad333b904c477206a48513154c593a27af4314af42ed34165bd94ce446ad937e4b3091af6a103d6d21
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 (2726) 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
4660	mssecsvc.exe
2784	mssecsvc.exe
448	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\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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 2336	620	rundll32.exe	75
PID 620 wrote to memory of 2336	620	rundll32.exe	75
PID 620 wrote to memory of 2336	620	rundll32.exe	75
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76
PID 2336 wrote to memory of 4660	2336	rundll32.exe	76

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9591bd448a0e5a78a753a88e30ec8fd7.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9591bd448a0e5a78a753a88e30ec8fd7.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4660
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:448

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2784

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 f6617ea5f5259656561f03d6def38b45d046c57800f8e63ed909091e8851673c
MD5 b19d0f770a78183990ab554c005d9e80
SHA1 ea00742a9fd42895d8c015752ade1d929104a7a8
SHA512 7d1c6a0c5bbbd6f6c5faedfad146fd6a13f96e09c07cb44f45f4e6b412b6347030865e9e303ad1d94903d1b0045ae45f9f65f17aad186510a762b563b6890a9a
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAM:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P5
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 f6617ea5f5259656561f03d6def38b45d046c57800f8e63ed909091e8851673c
MD5 b19d0f770a78183990ab554c005d9e80
SHA1 ea00742a9fd42895d8c015752ade1d929104a7a8
SHA512 7d1c6a0c5bbbd6f6c5faedfad146fd6a13f96e09c07cb44f45f4e6b412b6347030865e9e303ad1d94903d1b0045ae45f9f65f17aad186510a762b563b6890a9a
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAM:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P5
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 f6617ea5f5259656561f03d6def38b45d046c57800f8e63ed909091e8851673c
MD5 b19d0f770a78183990ab554c005d9e80
SHA1 ea00742a9fd42895d8c015752ade1d929104a7a8
SHA512 7d1c6a0c5bbbd6f6c5faedfad146fd6a13f96e09c07cb44f45f4e6b412b6347030865e9e303ad1d94903d1b0045ae45f9f65f17aad186510a762b563b6890a9a
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAM:yDqPoBhz1aRxcSUDk36SAEdhvxWa9P5
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 d01348e5db502938d48a9d698c66b33a74893816eb7f63e4c0e445f10fafac41
MD5 e467c4a1e72c7036f41764185e2973fc
SHA1 5995408c428d1abbbd9b86e9c8e16e425ecff689
SHA512 beb51c97e30bda15e1609e85476624f3a4da9ac655a374a5b43d79c92ea2ce0cec7281656a7f9709fb6e9bb3347379f9ea0885fcdb548401d9382effec56a298
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAM:QqPoBhz1aRxcSUDk36SAEdhvxWa9P5
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads