wannacry | 88674e9e3762f6c669a749134efc4daff5ddede1ca50d1167a216b635a2bce8d

Analysis

max time kernel
150s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2024 22:18

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General

Target

d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll
Size

5.0MB
MD5

d2f2c08ebeb5e226b23fbae86bc51169
SHA1

ac4bbe7363aa4f1cbaa8c66818726ab13373fe09
SHA256

88674e9e3762f6c669a749134efc4daff5ddede1ca50d1167a216b635a2bce8d
SHA512

6ac6c5d00afea526c778e973f9342959ac8c4490a87dfd4347bb47e6d4539d114b5b5ce59e27db72632744b0d207199f64f013d86e716e31208c8399a8a78f06
SSDEEP

49152:SnAQqMSPbcBVu/1INRx+TSqTdX1HkQo6SAA:+DqPoBI1aRxcSUDk36SA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3293) 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
788	mssecsvc.exe
5056	mssecsvc.exe
2868	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\tasksche.exe	mssecsvc.exe
File created	C:\WINDOWS\mssecsvc.exe	rundll32.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
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 1832 wrote to memory of 844	1832	rundll32.exe	83
PID 1832 wrote to memory of 844	1832	rundll32.exe	83
PID 1832 wrote to memory of 844	1832	rundll32.exe	83
PID 844 wrote to memory of 788	844	rundll32.exe	86
PID 844 wrote to memory of 788	844	rundll32.exe	86
PID 844 wrote to memory of 788	844	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d2f2c08ebeb5e226b23fbae86bc51169_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:788
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2868

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:5056

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
3fea3a6fa33027e883f56153ba2efb7c

SHA1
cb418468f681574ffda7f23869ce2108215961d5

SHA256
6fd4e99f6083595256d5724c8da529945763454b0666d229ca8987702e405ec9

SHA512
141a5420ea928e7088343254aaf0955e1de4572b11de8bd1b8d3745685da8b9286f28ba274faf804f5cb071c1dd16ae0ead18f0f5ae4ce2ad6e23a4b0d87b599

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
c703676c99b49e2f0b4b3543af5bb91b

SHA1
4fb551d62fc28bf553d7a9d1b3a74af40a43717b

SHA256
5c5d64979714cfb92ab45357e791a8729c151b248fbe103e4c4a4b89a81e64e9

SHA512
0bef8cab7ab951a5e0a6fb46aa051dbdb85e9ba05b577eff42bd0dd8d97070d24f909983368e6fd8754c49a3e8a5599ccbf213617b86fdeb9f4f1a2dd7d8dffd

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