wannacry | a427536061ad31d46342736bd5ef018eca16fb447b4d9de34fa5a6cd995a00aa

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-11-2024 03:08

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General

Target

a427536061ad31d46342736bd5ef018eca16fb447b4d9de34fa5a6cd995a00aa.dll
Size

5.0MB
MD5

99f69f4098b7efa0702b2eafc3b321ff
SHA1

5718379ca78ae4641a87f2dd1264dcf87b8dfef6
SHA256

a427536061ad31d46342736bd5ef018eca16fb447b4d9de34fa5a6cd995a00aa
SHA512

add16fa3d3733e7a5ea698eb0fb4b341b5fcda39991f13b74c98791f2c71c000037af8b579ed87534964b2371686e0a5c31c566ac8c2f22bf7c762fa73f57d30
SSDEEP

98304:7DqPoBhz1aRxcSUDk36SAEdhvxWa9P59Uc/J:7DqPe1Cxcxk3ZAEUadv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3224) 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 2 IoCs

pid	Process
2544	mssecsvc.exe
1936	mssecsvc.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 System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

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 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-ed-f9-c3-b4-fc\WpadDecisionTime = 10f41264c230db01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0171000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-ed-f9-c3-b4-fc	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}\8e-ed-f9-c3-b4-fc	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-ed-f9-c3-b4-fc\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2C516145-FEF4-44FA-8817-A61CA3B822E3}\WpadDecisionTime = 10f41264c230db01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-ed-f9-c3-b4-fc\WpadDecision = "0"	mssecsvc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2544	mssecsvc.exe
1936	mssecsvc.exe

Suspicious behavior: MapViewOfSection 47 IoCs

pid	Process
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
2544	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe
1936	mssecsvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	mssecsvc.exe
Token: SeDebugPrivilege	1936	mssecsvc.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 2104 wrote to memory of 1848	2104	rundll32.exe	30
PID 1848 wrote to memory of 2544	1848	rundll32.exe	31
PID 1848 wrote to memory of 2544	1848	rundll32.exe	31
PID 1848 wrote to memory of 2544	1848	rundll32.exe	31
PID 1848 wrote to memory of 2544	1848	rundll32.exe	31
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 384	2544	mssecsvc.exe	3
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 392	2544	mssecsvc.exe	4
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 432	2544	mssecsvc.exe	5
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 476	2544	mssecsvc.exe	6
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 492	2544	mssecsvc.exe	7
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 500	2544	mssecsvc.exe	8
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 604	2544	mssecsvc.exe	9
PID 2544 wrote to memory of 684	2544	mssecsvc.exe	10
PID 2544 wrote to memory of 684	2544	mssecsvc.exe	10
PID 2544 wrote to memory of 684	2544	mssecsvc.exe	10
PID 2544 wrote to memory of 684	2544	mssecsvc.exe	10

C:\Windows\system32\wininit.exe
wininit.exe
1⤵
PID:384
- C:\Windows\system32\services.exe
  C:\Windows\system32\services.exe
  2⤵
  PID:476
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch
    3⤵
    PID:604
  - - C:\Windows\system32\wbem\wmiprvse.exe
      C:\Windows\system32\wbem\wmiprvse.exe
      4⤵
      PID:1280
  - - C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      4⤵
      PID:1500
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k RPCSS
    3⤵
    PID:684
- - C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
    3⤵
    PID:748
- - C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
    3⤵
    PID:820
  - - C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      4⤵
      PID:1168
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs
    3⤵
    PID:856
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService
    3⤵
    PID:968
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k NetworkService
    3⤵
    PID:112
- - C:\Windows\System32\spoolsv.exe
    C:\Windows\System32\spoolsv.exe
    3⤵
    PID:344
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
    3⤵
    PID:1036
- - C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    3⤵
    PID:1120
- - C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE
    "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE"
    3⤵
    PID:1100
- - C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
    3⤵
    PID:2204
- - C:\Windows\system32\sppsvc.exe
    C:\Windows\system32\sppsvc.exe
    3⤵
    PID:2420
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Modifies data under HKEY_USERS
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1936
- C:\Windows\system32\lsass.exe
  C:\Windows\system32\lsass.exe
  2⤵
  PID:492
- C:\Windows\system32\lsm.exe
  C:\Windows\system32\lsm.exe
  2⤵
  PID:500

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
PID:392

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:432

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1200
- C:\Windows\system32\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a427536061ad31d46342736bd5ef018eca16fb447b4d9de34fa5a6cd995a00aa.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\a427536061ad31d46342736bd5ef018eca16fb447b4d9de34fa5a6cd995a00aa.dll,#1
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1848
  - - C:\WINDOWS\mssecsvc.exe
      C:\WINDOWS\mssecsvc.exe
      4⤵
      Executes dropped EXE
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2544

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

Replay Monitor

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
e0ea0c0cfb8668cffdee66aa6b2f555d

SHA1
058de7429b5704ae6fc54ec3ad1758f740b4f0a1

SHA256
617e7e429b429d93bb7a4f8e695d62ff7267d4e5fb19bf30d95f446bfc0302ad

SHA512
9481838e5235e069b0f47141b368b6502c2549c0010ae25f861d886d5591b216bbdec77e97ca388a40d9719efc8f15697b9f83eda324b90604e082b8459cdd4e

Download Submit
memory/1848-6-0x0000000002620000-0x0000000002C93000-memory.dmp

Filesize
6.4MB

Download
memory/1848-19-0x0000000002620000-0x0000000002C93000-memory.dmp

Filesize
6.4MB

Download
memory/1936-11-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/1936-20-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/2544-14-0x000000007EF70000-0x000000007EF7C000-memory.dmp

Filesize
48KB

Download
memory/2544-7-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/2544-13-0x00000000773CF000-0x00000000773D0000-memory.dmp

Filesize
4KB

Download
memory/2544-12-0x00000000773D0000-0x00000000773D1000-memory.dmp

Filesize
4KB

Download
memory/2544-18-0x000000007EF70000-0x000000007EF7C000-memory.dmp

Filesize
48KB

Download
memory/2544-17-0x0000000000400000-0x0000000000A73000-memory.dmp

Filesize
6.4MB

Download
memory/2544-8-0x00000000773CF000-0x00000000773D0000-memory.dmp

Filesize
4KB

Download
memory/2544-9-0x00000000773D0000-0x00000000773D1000-memory.dmp

Filesize
4KB

Download