wannacry | 0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3

General

Target

0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3.dll
Size

5.0MB
MD5

f019831d5f37a996e5f8f7338de3f50d
SHA1

e52d9f459059e297a0802d4c99cabf9b8f9540ff
SHA256

0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3
SHA512

cee576bd57d2dd20df722d19cb797db022e832f2ca281c499b473685a25f51586843ffd8ffef898f02e8ab8fbbc984cc913eca591670560594aaf9b2ad9f70db
SSDEEP

49152:RnxQqMSPbcBVQej/1INRx+TSqTdX1HkQ9nK4JKAR:16qPoBhz1aRxcSUDk

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1264) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 2 IoCs

Processes:

mssecsvr.exemssecsvr.exe

pid process

1356 mssecsvr.exe
368 mssecsvr.exe

pid	process
1356	mssecsvr.exe
368	mssecsvr.exe

Drops file in System32 directory 3 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\3S506HUI.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\3S506HUI.txt	mssecsvr.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvr.exe

description ioc process

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

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

Processes:

mssecsvr.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-73-98-bb-db-44\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
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 (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-73-98-bb-db-44\WpadDecision = "0"	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\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}\66-73-98-bb-db-44	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-73-98-bb-db-44\WpadDecisionTime = 70da8af66dcdd801	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	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\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{90353A4A-242E-4C35-BF5B-B17FC20D4116}\WpadDecisionTime = 70da8af66dcdd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\66-73-98-bb-db-44	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1300	1720	rundll32.exe	rundll32.exe
PID 1300 wrote to memory of 1356	1300	rundll32.exe	mssecsvr.exe
PID 1300 wrote to memory of 1356	1300	rundll32.exe	mssecsvr.exe
PID 1300 wrote to memory of 1356	1300	rundll32.exe	mssecsvr.exe
PID 1300 wrote to memory of 1356	1300	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0afb07f4dc3f28c640534c4282af4f467e0f25f271407b7deea06b6e8ec559a3.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1300

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1356

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:368

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
C:\Windows\mssecsvr.exe
Filesize
2.2MB

MD5
76a488b08f2181c80d34bac0dded51b9

SHA1
2560b67b0ab4fb9030eb915359efe1e6eb369b8d

SHA256
73d6217e112c5c2eeff2d4f77a5567814f272a9524ea00ffb0895118883fb9c9

SHA512
10e7045fc566010e92fe5fbe25a096fbab5df848c9103bf6c2f5baaa9e10d678df5578297236dc8c6efee0a093af4486a6551e1d574daeb856e8e06cdcbb4a5d

Download Submit
memory/1300-54-0x0000000000000000-mapping.dmp

Download
memory/1300-55-0x00000000765B1000-0x00000000765B3000-memory.dmp

Filesize
8KB

Download
memory/1356-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads