wannacry | 64d95187128d914965de0c8d049cbb22f5b3cda23183e94c6d82e3ed40cda817

General

Target

64d95187128d914965de0c8d049cbb22f5b3cda23183e94c6d82e3ed40cda817_NeikiAnalytics.dll
Size

5.0MB
MD5

176d70629d399ac693f7b03451f262f0
SHA1

d134d4497b644f52fe725d8c12cb31f99af79aa0
SHA256

64d95187128d914965de0c8d049cbb22f5b3cda23183e94c6d82e3ed40cda817
SHA512

d77aca892e9c79fad97f702c3dd7e7fd445b4a7672e7abaf3388911faaa5cf65b10f731473247863a202cdfc6605849be020e5412c65caa8f089ed832fb6efde
SSDEEP

24576:RbLgurgQhfdmMSirYbcMNgef0QeQjGIkQg6eX6SASkjTiif0Xc/OXlc3:RnsQqMSPbcBVQejIkQo6SArf0XdX63

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3300) 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
2056	mssecsvr.exe
344	mssecsvr.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 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\A95VVOYE.txt	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvr.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\MAX3AYV4.txt	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\MAX3AYV4.txt	mssecsvr.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\A95VVOYE.txt	mssecsvr.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\WpadDecisionTime = 804f538111c3da01	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecision = "0"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecisionTime = 804f538111c3da01	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f004a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{000CDB81-6B7A-4701-A42A-CADE1503F99A}\86-79-66-c3-c8-b4	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\86-79-66-c3-c8-b4\WpadDecision = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2108 wrote to memory of 2060	2108	rundll32.exe	28
PID 2060 wrote to memory of 2056	2060	rundll32.exe	29
PID 2060 wrote to memory of 2056	2060	rundll32.exe	29
PID 2060 wrote to memory of 2056	2060	rundll32.exe	29
PID 2060 wrote to memory of 2056	2060	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\64d95187128d914965de0c8d049cbb22f5b3cda23183e94c6d82e3ed40cda817_NeikiAnalytics.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\64d95187128d914965de0c8d049cbb22f5b3cda23183e94c6d82e3ed40cda817_NeikiAnalytics.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2060
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:2056

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:344

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
9f39db25e92f01266b2fd453d105d802

SHA1
b9ed7fc5839403e87119716fa94fe3bb73b56f10

SHA256
658ecb99e90cf4ce00a358a58d9e6e6468157147c73ccaae9f8e600dbb06aadd

SHA512
5bb998f1763cf15aee7e0aaacd40bc28dc2a6d2b152d4c8bb530d526f2e1c1bcfad0250a70c6a987d1073470e90061dccf80b3d6b6e6c5faa9892b5f7ba704f4

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