wannacry | d6434eea6725614187f29f4c1fb9436f2aa8b3a1f6f5b1658e739c2d0562eee3

General

Target

b1b508f6e48d032bfd9ad276f9c8f86d_JaffaCakes118.dll
Size

5.0MB
MD5

b1b508f6e48d032bfd9ad276f9c8f86d
SHA1

7c8c3fb551840a92044581f442f338cc0666a9f0
SHA256

d6434eea6725614187f29f4c1fb9436f2aa8b3a1f6f5b1658e739c2d0562eee3
SHA512

b8dfc1b21772be73c89595df4c1c84190df07067aa0fc4b054d0fc28bdb6796f78ce667a7099c6176010d021cf36a0faa6365c35c56b4423d29cf3fc00b7d489
SSDEEP

24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626Wo/Gsl:SnAQqMSPbcBVQej/1INRAW+Gsl

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2663) 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

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2376 mssecsvc.exe
2240 mssecsvc.exe
2464 tasksche.exe

pid	process
2376	mssecsvc.exe
2240	mssecsvc.exe
2464	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

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

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

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\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{452D8D09-F359-4BC8-B573-BE240584E621}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-ec-e7-c5-a8-51	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-ec-e7-c5-a8-51\WpadDecisionReason = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-ec-e7-c5-a8-51\WpadDecision = "0"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{452D8D09-F359-4BC8-B573-BE240584E621}\WpadDecisionReason = "1"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f008f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{452D8D09-F359-4BC8-B573-BE240584E621}\WpadDecisionTime = 20983503a5bfda01	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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{452D8D09-F359-4BC8-B573-BE240584E621}\c2-ec-e7-c5-a8-51	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-ec-e7-c5-a8-51\WpadDecisionTime = 20983503a5bfda01	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\{452D8D09-F359-4BC8-B573-BE240584E621}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{452D8D09-F359-4BC8-B573-BE240584E621}\WpadNetworkName = "Network 3"	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2916 wrote to memory of 2968	2916	rundll32.exe	rundll32.exe
PID 2968 wrote to memory of 2376	2968	rundll32.exe	mssecsvc.exe
PID 2968 wrote to memory of 2376	2968	rundll32.exe	mssecsvc.exe
PID 2968 wrote to memory of 2376	2968	rundll32.exe	mssecsvc.exe
PID 2968 wrote to memory of 2376	2968	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1b508f6e48d032bfd9ad276f9c8f86d_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2916

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b1b508f6e48d032bfd9ad276f9c8f86d_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2968

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2376

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2464

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
cebc61bb7da1c54560be22c34b13b76c

SHA1
e2ccb9ba6d7377b106a62a9968f093cb153095a2

SHA256
5e04837db4d06a38dd08cbf861f3415579f349e31e9ca998e318320671975d04

SHA512
254dfd5b8064c9a1861e782eda6e0553143a78878e03d0586fe38d54a9aab94ccd740872d29c9083c8d0d95d4915a5acf4ee1451f831ddf88f434fc97ac8f41f

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C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
6d9e02cbc2b890d9ff66431c2d53b6e0

SHA1
8fb54d846f2a9411d36b14d98f45733e57c8f46d

SHA256
7df8f55ef753302be3c6fdf2c1f50c36a537f720f2ebbb3efc6cd054a4705e6d

SHA512
ff17bc1ee5e95ecf0661dae1822cb59cec41555a62405d2124e6619a61320225be52a6f1664476918ac7561e0a34b579165b8946b3ed74057a77ddb80914dc72

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads