wannacry | a68bcbb24666e4acfe96874f03f3bca170ac800980373e181f01db433736eebc

General

Target

c858b6229d33818de24f3549253298d9_JaffaCakes118.dll
Size

5.0MB
MD5

c858b6229d33818de24f3549253298d9
SHA1

fa0aba1ca5228cf33d3b1bf3cb94887d89c741b0
SHA256

a68bcbb24666e4acfe96874f03f3bca170ac800980373e181f01db433736eebc
SHA512

9bbb0aa242c20d1055043868058bdc2fbf4ab338f2d96822adb24e2dc7f340e854054dc7bd038d35ec3796e4d36790b200069303ff419673a6a69da8ef4be3e2
SSDEEP

49152:znAQqMSPbcBVq/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEd:TDqPoBc1aRxcSUDk36SAEdhvxWa9P5S

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Executes dropped EXE 3 IoCs

pid	Process
1948	mssecsvc.exe
1308	mssecsvc.exe
2740	tasksche.exe

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 (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	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\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}\WpadDecisionTime = 10af8ff0daf9da01	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-7e-48-cd-dd-56	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\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}\WpadDecision = "0"	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\ZoneMap\	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f01a2000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-7e-48-cd-dd-56\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-7e-48-cd-dd-56\WpadDecision = "0"	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 = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}\WpadNetworkName = "Network 3"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3B5B5FEF-0A76-4277-BDF3-1FF13DBB5F18}\da-7e-48-cd-dd-56	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\da-7e-48-cd-dd-56\WpadDecisionTime = 10af8ff0daf9da01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "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\History\CachePrefix = "Visited:"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1704 wrote to memory of 1856	1704	rundll32.exe	30
PID 1856 wrote to memory of 1948	1856	rundll32.exe	31
PID 1856 wrote to memory of 1948	1856	rundll32.exe	31
PID 1856 wrote to memory of 1948	1856	rundll32.exe	31
PID 1856 wrote to memory of 1948	1856	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c858b6229d33818de24f3549253298d9_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c858b6229d33818de24f3549253298d9_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1856
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:1948
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2740

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
abc2ac1b583032c5f2ddb636c34342c4

SHA1
be9b9636376dd4a019227285896594d27c4fe353

SHA256
0ef9d87cc6541d54f93149af4a12521b994aa9b1775b60e6ce60d0c5e5a930ce

SHA512
cbfff0bb0f588b4debac0aab80adbfa232a9c73789a271088fea3725b123ad3f6d6fbfc90b73710e91cac40b999d6baac36fa35ccec99313376ccd938d6f7d7c

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
5ffa0bf099b42864698794afac439aaa

SHA1
9b6a827cefd04ea268ef14160a67d4e3a1a67903

SHA256
170c2e437ac932e396146ba0c7cd0b3d6b09cc4938f27455aca3b58505248f76

SHA512
a8a7b8061bd87372ca783763827da0c878eb014875f86b5e6c9f42c8672d60e3c13d5851218bbf3db95c726c4eaa961b62e96941a8ff658f67bdadfaf6a33b4f

Download Submit

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