wannacry | 703a9f1657b0ff9513118463262311ca5c795970c6a9e29450099ab8cca929e7

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
09/07/2024, 22:10

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General

Target
322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll
Size 5.0MB
Sample240709-13j83ayemm
SHA256 703a9f1657b0ff9513118463262311ca5c795970c6a9e29450099ab8cca929e7
MD5 322b3db73cefcaf6a7a7f43277a572ab
SHA1 fd271d9a9ec9a5340f085d4b9790ecc915a21175
SHA512 39a2b236cc0175cf1457314edd22d7e31488209a51a8c89136a1c82b5b8d49b6e768be31dce4f18fc4406921289d46afb8561fb1f17d155b02c5125182c80bc2
SSDEEP 49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA1Eau3RhlAH:+DqPoBhz1aRxcSUDk36SAv3Rh2H
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3210) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
1940	mssecsvc.exe
4624	mssecsvc.exe
2712	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 Discovery
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
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 3196 wrote to memory of 3372	3196	rundll32.exe	82
PID 3196 wrote to memory of 3372	3196	rundll32.exe	82
PID 3196 wrote to memory of 3372	3196	rundll32.exe	82
PID 3372 wrote to memory of 1940	3372	rundll32.exe	84
PID 3372 wrote to memory of 1940	3372	rundll32.exe	84
PID 3372 wrote to memory of 1940	3372	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\322b3db73cefcaf6a7a7f43277a572ab_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3372
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1940
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2712

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

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 0a8de53357d49dd1dc5debc35c14cec87b4e19574c494aac49b6ad51bbdde832
MD5 0c67ab84d7f9ec7a532cd1990a0d02d5
SHA1 414e8efae3f43a1950247f25f18385bf509e69e2
SHA512 12be58060466a8e1822dd158b9bde2fe7a643d7b098960d791396e24bd7e23bfb37195c0f7a6b2b85c77ec27c4960f630aa307098148658aa027c66ac9e39be2
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA1Eau3RhlAHI:yDqPoBhz1aRxcSUDk36SAv3Rh2HI
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 16d82c3f8600e385179b05d5bc9a75fd3edd87da5795e0ef070d53859965f369
MD5 64265df8e2b86436438e2bd3a889aced
SHA1 75cd702ce0b21df1fcb9b51310e0695e14faed04
SHA512 e1b45dacfedb2fb8478951790c9465c72e4023989633491a3d7eb168382608d335976ee2e7e45a4df6556f34cb8172ad6fda583ba1b30a7edea017fa97c60b7e
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA1Eau3RhlAHj:QqPoBhz1aRxcSUDk36SAv3Rh2Hj
MD5 SHA1 SHA512 SSDEEP