wannacry | 7ab78920ad07396864187254f5323571807df03ca90c6b5eab2d1c8d0c27b4d5

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
16/07/2024, 01:57

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General

Target
4c58581fa08accc15994f3db1098a5bc_JaffaCakes118.dll
Size 5.0MB
Sample240716-cdpv9azdqr
SHA256 7ab78920ad07396864187254f5323571807df03ca90c6b5eab2d1c8d0c27b4d5
MD5 4c58581fa08accc15994f3db1098a5bc
SHA1 1a349b33c6cc821b814138eb9619fcbce20e6eda
SHA512 99e85447b5c2a3380cb9add92c5ca2ded417cdc1de2fbc3655b32014a53fd7202cdf6cda6955bbc8605bd6667cffafc9df3a04b10e0dcf15079481ede3b62da1
SSDEEP 49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA8Kx/aa56L:TDqPoBhz1aRxcSUDk36SANKx/ag6L
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 (3354) 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
3696	mssecsvc.exe
2332	mssecsvc.exe
3776	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
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 352 wrote to memory of 2624	352	rundll32.exe	83
PID 352 wrote to memory of 2624	352	rundll32.exe	83
PID 352 wrote to memory of 2624	352	rundll32.exe	83
PID 2624 wrote to memory of 3696	2624	rundll32.exe	84
PID 2624 wrote to memory of 3696	2624	rundll32.exe	84
PID 2624 wrote to memory of 3696	2624	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c58581fa08accc15994f3db1098a5bc_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:352
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c58581fa08accc15994f3db1098a5bc_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2624
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:3696
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3776

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2332

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

Replay Monitor

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 4beab4d0d34aa39daecd1846d8a574aacbda506618bdbabc3ffeea46e121e774
MD5 9bcd08d46432b6dac27417b0de3da8b1
SHA1 d16fae609a6cc1049fb008039555c2cc67db8638
SHA512 b987e4b323fc59b82b71f4f5e0fe71b0324811247ab488c19688cdc1430322deaadb6b73528178277b3ac9e3e89f5f938381b768839d99e7a72600ea5dfd636a
SSDEEP 49152:XnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA8Kx/aa56L:XDqPoBhz1aRxcSUDk36SANKx/ag6L
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 372be1952cbc480ee462d263e3e067b82ae542e7b65789508575642bd960f18e
MD5 82246a37bc2b94a29240a8b49de5cf57
SHA1 60d6df7c05d3a037adb5ff61a563a7ae7ab00f36
SHA512 047cab5fb0ef6bf88db1fe2fbf7200cf810a1b057e9b3488e32a6d8cf96dd56e9d397c5dc16885f48aca4d858a3612af74284819e50006e3279bcf9642200289
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAA8Kx/aa56Lx:QqPoBhz1aRxcSUDk36SANKx/ag6Lx
MD5 SHA1 SHA512 SSDEEP