wannacry | d77c2654998c833dce98951f8ea663e248da995bce80fe7e9237d793e097cde9

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
12-09-2024 18:20

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General

Target

dccb6ff69d6cf9021be27fd3a555fceb_JaffaCakes118.dll
Size

5.0MB
MD5

dccb6ff69d6cf9021be27fd3a555fceb
SHA1

3142b09f7c36cf468c54eb8d5383e680caa9ae75
SHA256

d77c2654998c833dce98951f8ea663e248da995bce80fe7e9237d793e097cde9
SHA512

61900cfef72a61862290974f6dec80750fbfe61073dcda20511f155362a71426efa3f7b204859611b7884ee03b37d37af11e0f0da1b4e8423c0ea1e7ec41c2db
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0vcH9PO6LLuYAMEcpcL7nEaut/8ukE7A4i0:SnAQqMSPbcBVkH9PAMEcaEau358

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3232) 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
1212	mssecsvc.exe
2820	mssecsvc.exe
1260	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

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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\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 4928 wrote to memory of 3644	4928	rundll32.exe	83
PID 4928 wrote to memory of 3644	4928	rundll32.exe	83
PID 4928 wrote to memory of 3644	4928	rundll32.exe	83
PID 3644 wrote to memory of 1212	3644	rundll32.exe	84
PID 3644 wrote to memory of 1212	3644	rundll32.exe	84
PID 3644 wrote to memory of 1212	3644	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\dccb6ff69d6cf9021be27fd3a555fceb_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\dccb6ff69d6cf9021be27fd3a555fceb_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3644
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1212
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1260

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
bce7209c8304d5ffbcb024a9743455e5

SHA1
08f513c1282d7a745b78c759a8474f40f0c25c9d

SHA256
552208482c576951f304ae3c75bdf6f95c8608eb53f46b47d503d56c931758e9

SHA512
99483a76d267d1503d9f4f7742dc3b766f25a62c29e7a212d08e3c6fdff1d7e78c17550445a143d66fee096fdd8b4458fdb2b3215ade8f97e5ebc9340a361604

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
7ec79ca030cec0964ad826eb287e5c13

SHA1
f100af87bc0505c3ce7030ebc1d6eb8edf6fddb2

SHA256
a6c447a87ec4397600e5233d79cc6aacef13b39e571c59aa1dc9e6dcf5a54bf6

SHA512
8ddbed2aaa48cc4332628cd1427a879f14fa4ae085c7544483ace3d62291cc92ebf06b658862e2180b31d964dd583c9f1208da240c11f9e543be8ab757da5de9

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