wannacry | 0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590

General

Target

0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll
Size

5.0MB
MD5

008b9895ed29a02b2ad9c15d10fe250c
SHA1

6dba81733aa199fd64dcfbb17e43d1a575a02086
SHA256

0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590
SHA512

3deeeaa92cb98ce7fcca23a30fe08834c10af7e13b7ab8cbdceaa23408798a9dbf94cd4e3eecc25123abd93fbad8759a3c772d30bcffb34b1cb48ac39f8e0aea
SSDEEP

24576:RbLgurgDdmMSirYbcMNgef0jjG/D8k0k+RdhA:RnsEMSPbcBVu/oRdh

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1290) 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

944 mssecsvr.exe
560 mssecsvr.exe

pid	process
944	mssecsvr.exe
560	mssecsvr.exe

Drops file in System32 directory 3 IoCs

Processes:

mssecsvr.exe

description	ioc	process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\S1RQOBSZ.txt	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\S1RQOBSZ.txt	mssecsvr.exe
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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionTime = b063e2ad6dcdd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionReason = "1"	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
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
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadNetworkName = "Network 2"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6	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\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionTime = b063e2ad6dcdd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecision = "0"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\d6-b7-cd-fe-6e-b6	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecision = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1128 wrote to memory of 1116	1128	rundll32.exe	rundll32.exe
PID 1116 wrote to memory of 944	1116	rundll32.exe	mssecsvr.exe
PID 1116 wrote to memory of 944	1116	rundll32.exe	mssecsvr.exe
PID 1116 wrote to memory of 944	1116	rundll32.exe	mssecsvr.exe
PID 1116 wrote to memory of 944	1116	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1128

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0b332e6ac79094a04d9825f86c9a663e53e936fd835edcef1e29b422132f6590.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1116

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:944

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:560

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

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Downloads

C:\WINDOWS\mssecsvr.exe
Filesize
2.2MB

MD5
476e46074243409cd11eb699a1e87238

SHA1
462087544ff91ef506079a684419b8d5748462fd

SHA256
23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c

SHA512
c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194

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

MD5
476e46074243409cd11eb699a1e87238

SHA1
462087544ff91ef506079a684419b8d5748462fd

SHA256
23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c

SHA512
c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194

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

MD5
476e46074243409cd11eb699a1e87238

SHA1
462087544ff91ef506079a684419b8d5748462fd

SHA256
23534cc1894091377e8ee9e7864bd1dd58e5ecefe0cd3f305a1e06de4fdb512c

SHA512
c87985972ef8f399a4b19e7ce55833e4b0256b3af8a14b0f118be6fde1118de22728f4a2fe15eca816afc1fe244f473c87a49bdb33ee076a11dc9fa87e471194

Download Submit
memory/944-56-0x0000000000000000-mapping.dmp

Download
memory/1116-54-0x0000000000000000-mapping.dmp

Download
memory/1116-55-0x0000000076961000-0x0000000076963000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads