wannacry | 95ffbaebeaef2a3354564a46b7c4bbb566694b3b3cbcf6f1092b2a501dcf97f8

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
15/09/2024, 11:48

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General

Target
e2692f0709f518e53b864d24049e324a_JaffaCakes118.dll
Size 5.0MB
Sample240915-nyjqhsshpl
SHA256 95ffbaebeaef2a3354564a46b7c4bbb566694b3b3cbcf6f1092b2a501dcf97f8
MD5 e2692f0709f518e53b864d24049e324a
SHA1 4fb94d563e918d476712600895e46623ab8b19ae
SHA512 af88644577052b43b0e8c77118b328a1b78014d70a24effd421c6ef7a544e008df019a2acc6dcb93d640046180330b1517c8513b570a915505a7115dc277615b
SSDEEP 49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAKAMEcaEaue5c/bXZROAx:+DqPoBhz1aRxcSUDk36SAZ59Uc/J
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 (3347) 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
2056	mssecsvc.exe
4032	mssecsvc.exe
1132	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 1256 wrote to memory of 4488	1256	rundll32.exe	85
PID 1256 wrote to memory of 4488	1256	rundll32.exe	85
PID 1256 wrote to memory of 4488	1256	rundll32.exe	85
PID 4488 wrote to memory of 2056	4488	rundll32.exe	87
PID 4488 wrote to memory of 2056	4488	rundll32.exe	87
PID 4488 wrote to memory of 2056	4488	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2692f0709f518e53b864d24049e324a_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2692f0709f518e53b864d24049e324a_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4488
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:2056
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:1132

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:4032

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

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 1a9e7b00b68020fd4fd8016278cc161d14ab7ce0fa1ab2e03ec0c1adbc41d4e5
MD5 405225fbead6aa70e58c57a89d908e98
SHA1 cbb7f3ef14cb6d0d2e33d184caf697ec920631ff
SHA512 4b808c83bb2ff1f529d0a0a20e9a1f191b558fdda0fdcd273c35980b7a186c9acebe2115b2093167f1750868aa014ae159db15b6b9122114c057d9a58d3fc1e8
SSDEEP 49152:2nAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAKAMEcaEaue5c/bXZROAxf:yDqPoBhz1aRxcSUDk36SAZ59Uc/Jf
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 f2484eae21e4b0e433386d23bbdb883a7af3f136151b3e46001fbf083c337b8a
MD5 ea4a3a376f0d13be957338954e4f1272
SHA1 ee3ca7a7a6b094d6ad888c134f3625abb79b5788
SHA512 37931593d06acd4417baeea5fb78f7649b8a98d7ae94b5d4aa34f1b36a7e82b89dc661abded93caf5c3fbd80aa38c5f1a98a7c85cabf43dacd0301afc903a761
SSDEEP 49152:nQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAAKAMEcaEaue5c/bXZROAxr:QqPoBhz1aRxcSUDk36SAZ59Uc/Jr
MD5 SHA1 SHA512 SSDEEP