wannacry | 83be7f2061c01a6a24326b61c78d249f3f8cde5a35672369cbe8263279e7f58b

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
21-09-2024 00:09

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General

Target

eeb3e9dbc293f20d5389be41fd28654f_JaffaCakes118.dll
Size

5.0MB
MD5

eeb3e9dbc293f20d5389be41fd28654f
SHA1

c7834423964472d850b3447a524e83e0d5d2ed53
SHA256

83be7f2061c01a6a24326b61c78d249f3f8cde5a35672369cbe8263279e7f58b
SHA512

c2b48501182291913e76e871861d22cfbb9de71a6d7f1cf970c14d71e0d691c6824d6d8b61da6e19ae16f8379b8ab4502914730468578c8d1577f2a2a856201a
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626SX6SASk+:SnAQqMSPbcBVQej/1INRr6SAA

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3350) 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
4840	mssecsvc.exe
4956	mssecsvc.exe
4804	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 4076 wrote to memory of 3212	4076	rundll32.exe	83
PID 4076 wrote to memory of 3212	4076	rundll32.exe	83
PID 4076 wrote to memory of 3212	4076	rundll32.exe	83
PID 3212 wrote to memory of 4840	3212	rundll32.exe	84
PID 3212 wrote to memory of 4840	3212	rundll32.exe	84
PID 3212 wrote to memory of 4840	3212	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\eeb3e9dbc293f20d5389be41fd28654f_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\eeb3e9dbc293f20d5389be41fd28654f_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3212
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:4840
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4804

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:4956

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
46b44d77c144127cd1ab2eea786f62db

SHA1
add2edbcc7dc1c302b31a14766c3c705b06b70c7

SHA256
e5b92217e412c0d63eea908374f01fd2910c404b9b9f5e1a119773bec0b2b52b

SHA512
fff4f7fd2751bda2cf1f90bb57e7fbba6833cf21b914d21a9788adcd471e9e64c8053f074e5d94421fa21533c3b660efa7e0f3e1d1e651a80a8a1f5f03ca835c

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
9797b37f9b82c200d96eb0a8f4484f8e

SHA1
8c8156c01897e79da97599eca24738adda6852d4

SHA256
7d1d42696141fff6fb813537b1a8ddcb7cfd4a61e0ce6830276f7416a1ab4200

SHA512
97e5d45f9d49ef0d4e31f794fc4725e9e64377e19c696b969f1ca64afd03ad5d3b32eacaf15a126b4bc508535c9fc611e4f3023d886721603eeae66c1df61456

Download Submit