wannacry | fb648bfb485f910e065cc18778364a56be32044d1ac4729449f3cc28221b12e8

General

Target

95ae8e32eb8635e7eabe14ffbfaa777b.dll
Size

5.0MB
MD5

95ae8e32eb8635e7eabe14ffbfaa777b
SHA1

d5872c3f694a9e23c0583c4ae3e5c59eab26c021
SHA256

fb648bfb485f910e065cc18778364a56be32044d1ac4729449f3cc28221b12e8
SHA512

053e31bb5d469a2c4b1c5ab658d87051168c8a0b8d55d1709bcc4c11faf16fd1617263c5c30c4c9bfb5b319ead6d2712fafebc5a40888f5a6b46d1eb6030335f
SSDEEP

49152:RnnMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:1nPoBhz1aRxcSUDk36SAEdhv

Score

10^/10

wannacry ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Executes dropped EXE 2 IoCs

pid	Process
1176	mssecsvr.exe
1308	mssecsvr.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
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\YGIHVSQL.txt	mssecsvr.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\YGIHVSQL.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	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecisionTime = 405579757021d901	mssecsvr.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc	mssecsvr.exe
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
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 (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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f004b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadDecision = "0"	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\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\16-f4-e4-81-94-fc	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
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}	mssecsvr.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{41D4D3C8-6A6B-4C53-B997-14E36BDA695F}\WpadNetworkName = "Network 2"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecisionReason = "1"	mssecsvr.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecisionTime = 405579757021d901	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\16-f4-e4-81-94-fc\WpadDecision = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvr.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	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

description	pid	Process	procid_target
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 1432 wrote to memory of 2024	1432	rundll32.exe	28
PID 2024 wrote to memory of 1176	2024	rundll32.exe	29
PID 2024 wrote to memory of 1176	2024	rundll32.exe	29
PID 2024 wrote to memory of 1176	2024	rundll32.exe	29
PID 2024 wrote to memory of 1176	2024	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\95ae8e32eb8635e7eabe14ffbfaa777b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\95ae8e32eb8635e7eabe14ffbfaa777b.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2024
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1176

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:1308

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvr.exe

Filesize
2.2MB

MD5
115b1d97402bc50dacb74ba73c7464d2

SHA1
799abb0d4067ec605126cd40ce52949510a60cf7

SHA256
a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b

SHA512
910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
115b1d97402bc50dacb74ba73c7464d2

SHA1
799abb0d4067ec605126cd40ce52949510a60cf7

SHA256
a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b

SHA512
910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4

Download Submit
C:\Windows\mssecsvr.exe

Filesize
2.2MB

MD5
115b1d97402bc50dacb74ba73c7464d2

SHA1
799abb0d4067ec605126cd40ce52949510a60cf7

SHA256
a837de3df64de641ca48b50983dc072692e237a24197bcc0c080152c4ddc3c2b

SHA512
910bf83e0c71df49d5c47cfd078d961ac5214fbcc14ed73052075f0e00e80bd942bc2fbb585630b630d78ac713d7a0dc899aa95a14f2554440f09c6119833bc4

Download Submit
memory/2024-55-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download

Analysis

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