wannacry | d1cd536cd1bf4f27494a6f3a2b10f7a63ce08e39fb5102cff6ce23037d08ed75

General

Target

95f0b8cab5f01a8914908c4ee8c544ac.dll
Size

5.0MB
MD5

95f0b8cab5f01a8914908c4ee8c544ac
SHA1

d806fae9de9ffef68320a1ec088fbf10de68eacb
SHA256

d1cd536cd1bf4f27494a6f3a2b10f7a63ce08e39fb5102cff6ce23037d08ed75
SHA512

62ba3b12e80b0614b5c044dd46c79f5861c2bbf59613f7ab63f4a806a97ae9cc5e519bf629e08bac1d51d3d89364285eb105b4f53f2767eb77293ce2245da9f8

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1227) 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

1364 mssecsvr.exe
2032 mssecsvr.exe

pid	process
1364	mssecsvr.exe
2032	mssecsvr.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	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 (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadNetworkName = "Network 3"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionTime = 000a80f0e69bd801	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecisionTime = 000a80f0e69bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecision = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecision = "0"	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\{2E9134DB-3C23-4031-8933-B00BB05E13E0}	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\WpadDecisionReason = "1"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2E9134DB-3C23-4031-8933-B00BB05E13E0}\06-75-a7-dd-b9-dc	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\06-75-a7-dd-b9-dc	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\06-75-a7-dd-b9-dc\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 1224	1800	rundll32.exe	rundll32.exe
PID 1224 wrote to memory of 1364	1224	rundll32.exe	mssecsvr.exe
PID 1224 wrote to memory of 1364	1224	rundll32.exe	mssecsvr.exe
PID 1224 wrote to memory of 1364	1224	rundll32.exe	mssecsvr.exe
PID 1224 wrote to memory of 1364	1224	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\95f0b8cab5f01a8914908c4ee8c544ac.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\95f0b8cab5f01a8914908c4ee8c544ac.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1224

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1364

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:2032

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

1

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
e1722e2e24aec6407f33ff6249f25544

SHA1
fd7ba9ce1e3fa5a68bb2f52adeb94db2ab3d3b30

SHA256
e9f56373c3ade43236e4916999c646c71ef3eaf3d3def6bc153b0424b97bc8ad

SHA512
1903a64913995074853a4c685ae088225b3940ed77bf6750651de67dcb73c4902e32feadba6a28d97797534551df3c0ac0250f58de0105bbfdff0df4bf5df073

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

MD5
e1722e2e24aec6407f33ff6249f25544

SHA1
fd7ba9ce1e3fa5a68bb2f52adeb94db2ab3d3b30

SHA256
e9f56373c3ade43236e4916999c646c71ef3eaf3d3def6bc153b0424b97bc8ad

SHA512
1903a64913995074853a4c685ae088225b3940ed77bf6750651de67dcb73c4902e32feadba6a28d97797534551df3c0ac0250f58de0105bbfdff0df4bf5df073

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

MD5
e1722e2e24aec6407f33ff6249f25544

SHA1
fd7ba9ce1e3fa5a68bb2f52adeb94db2ab3d3b30

SHA256
e9f56373c3ade43236e4916999c646c71ef3eaf3d3def6bc153b0424b97bc8ad

SHA512
1903a64913995074853a4c685ae088225b3940ed77bf6750651de67dcb73c4902e32feadba6a28d97797534551df3c0ac0250f58de0105bbfdff0df4bf5df073

Download Submit
memory/1224-54-0x0000000000000000-mapping.dmp

Download
memory/1224-55-0x0000000076291000-0x0000000076293000-memory.dmp

Filesize
8KB

Download
memory/1364-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads