wannacry | af446d10caac7affffe5417cf049184b3882d3842193f6d8f4375dcab28ff2a3

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-08-2024 19:40

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General

Target

c3b21035c07db7d2deb629b5ad0cce85_JaffaCakes118.dll
Size

5.0MB
MD5

c3b21035c07db7d2deb629b5ad0cce85
SHA1

ceca7805fbeefa8fe8dd0ca973345d24e792453d
SHA256

af446d10caac7affffe5417cf049184b3882d3842193f6d8f4375dcab28ff2a3
SHA512

6d5b9ae19832945a98f71d07542b64d8a5bd0a8745886cca59c22f2258450337284752b28783fa0b9062e3f620f520324f7a8c64524396c4b3a548f6cf33230f
SSDEEP

98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R:+DqPe1Cxcxk3ZAEUadzR

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3231) 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
540	mssecsvc.exe
212	mssecsvc.exe
1852	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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 1532 wrote to memory of 1804	1532	rundll32.exe	84
PID 1532 wrote to memory of 1804	1532	rundll32.exe	84
PID 1532 wrote to memory of 1804	1532	rundll32.exe	84
PID 1804 wrote to memory of 540	1804	rundll32.exe	85
PID 1804 wrote to memory of 540	1804	rundll32.exe	85
PID 1804 wrote to memory of 540	1804	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c3b21035c07db7d2deb629b5ad0cce85_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1532
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c3b21035c07db7d2deb629b5ad0cce85_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:540
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1852

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:212

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
185a2781cf2b23a2101219312cbda555

SHA1
6cd020bffcafb89826487d8e17035fa2d11caf28

SHA256
1b953e4bc70e74b65321678eb153045136ecc643a2a8edf17a16a4ef07727c6d

SHA512
d53c5cff1f7e0f0b16113dafef89fc5c03e07a62e52909f9778b250122bc07ae2e3fef84a4f526fc9b25ef2b49d6a475d01e6dbe71cc8f7e4453705aac7e1b2b

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9fdc75bc0d94b7e408f9813561a33235

SHA1
1421f566e2c1c892e379b4035824022987a5a923

SHA256
c1cbe9b59aa20b96c0c54077af6f41e66701628c7a7d8db9d047d96e5d606c8b

SHA512
afce858e3eb65c6f23a8e409933b0a06e781976b378a96e7877c4916ce44bd4534ecce9f6afe26427150ffc7096755c9747b3f969b0f53f4d54a2ba0a31f0a6c

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