wannacry | a700d1f840a7ffd4990d0a05ee18af261c92a5c708c1465a107ffd88903959ea

General

Target

444e7000f1959e9f80675efb71862ddf.dll
Size

5.0MB
MD5

444e7000f1959e9f80675efb71862ddf
SHA1

a9a4a8cbd2debe03024590dc4409cc195de1ee82
SHA256

a700d1f840a7ffd4990d0a05ee18af261c92a5c708c1465a107ffd88903959ea
SHA512

d87af6fa3a7856859ad04892fc353f629883de23d4387e526acc0a879c4ea097dc46d74d76f1eff88160fca1cdb3ad728e63ddda197cabf511d803cd53f6580e

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (1230) 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

316 mssecsvr.exe
1360 mssecsvr.exe

pid	process
316	mssecsvr.exe
1360	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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 (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecisionTime = 2098305ace9bd801	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\ZoneMap\	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadNetworkName = "Network 3"	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\96-4f-74-58-7d-c3	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecisionReason = "1"	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 (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\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0103000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecisionTime = 2098305ace9bd801	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{47005D75-3E5B-451B-A1EC-E55F5036B8F1}\WpadDecision = "0"	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\Content\CachePrefix	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-4f-74-58-7d-c3\WpadDecision = "0"	mssecsvr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2008 wrote to memory of 2020	2008	rundll32.exe	rundll32.exe
PID 2020 wrote to memory of 316	2020	rundll32.exe	mssecsvr.exe
PID 2020 wrote to memory of 316	2020	rundll32.exe	mssecsvr.exe
PID 2020 wrote to memory of 316	2020	rundll32.exe	mssecsvr.exe
PID 2020 wrote to memory of 316	2020	rundll32.exe	mssecsvr.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\444e7000f1959e9f80675efb71862ddf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2008

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\444e7000f1959e9f80675efb71862ddf.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2020

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:316

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:1360

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
c853f19eafdb740939aa66a8edafac47

SHA1
710f513679f84ff781bf612ed48e3601dc0f8bc8

SHA256
74a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda

SHA512
be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1

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

MD5
c853f19eafdb740939aa66a8edafac47

SHA1
710f513679f84ff781bf612ed48e3601dc0f8bc8

SHA256
74a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda

SHA512
be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1

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

MD5
c853f19eafdb740939aa66a8edafac47

SHA1
710f513679f84ff781bf612ed48e3601dc0f8bc8

SHA256
74a295ea3f64bc4c29fde7a4015978f695a09b30067ce20897a33857660e4eda

SHA512
be05793130ad585f8132c72ab211062702f9075df985cd4db2e81fe1a4d8f36782e92af59b3ae471cf03c1d81990435449b859d56e57125d6830e94ed9245db1

Download Submit
memory/316-56-0x0000000000000000-mapping.dmp

Download
memory/2020-54-0x0000000000000000-mapping.dmp

Download
memory/2020-55-0x0000000075791000-0x0000000075793000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads