wannacry | 65ffed1aa8fe44b4261f214de32f74e853d43d1b9ca425182ae0193ea5d29a9d

General

Target

3c605f2e9af22601b6dec4daa2c95fc0N.exe
Size

5.0MB
MD5

3c605f2e9af22601b6dec4daa2c95fc0
SHA1

54fa86b01803db3cbe588a5f3be19773256fe518
SHA256

65ffed1aa8fe44b4261f214de32f74e853d43d1b9ca425182ae0193ea5d29a9d
SHA512

e96217a27b25e534f733db84098644fa736a93d54de72a1d76a73f29960be77ac657f7989b4b8bdd40437b5f9072070e518f9487ba78fe4510ec68c361b1ce69
SSDEEP

6144:eE9l9ynRIYVTH5DgSgNajldktM0XXrO2/HJKyrYev3AiiVjAqZfAgbJ3iqMgAyY:e1bLgmlu//dhAvVLJAmd3A

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2445) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 1 IoCs

pid	Process
2664	tasksche.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\8QDQ8072.txt	3c605f2e9af22601b6dec4daa2c95fc0N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	3c605f2e9af22601b6dec4daa2c95fc0N.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\GCQXYDK8.txt	3c605f2e9af22601b6dec4daa2c95fc0N.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\GCQXYDK8.txt	3c605f2e9af22601b6dec4daa2c95fc0N.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\8QDQ8072.txt	3c605f2e9af22601b6dec4daa2c95fc0N.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	3c605f2e9af22601b6dec4daa2c95fc0N.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2832	2664	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3c605f2e9af22601b6dec4daa2c95fc0N.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}\WpadDecisionReason = "1"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}\96-61-f8-e4-07-51	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}\WpadDecision = "0"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-61-f8-e4-07-51	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-61-f8-e4-07-51\WpadDecisionReason = "1"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0079000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}\WpadNetworkName = "Network 3"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-61-f8-e4-07-51\WpadDecisionTime = d03be69386dfda01	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\96-61-f8-e4-07-51\WpadDecision = "0"	3c605f2e9af22601b6dec4daa2c95fc0N.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{78FCC7E4-8795-47DA-A471-97464895CEA1}\WpadDecisionTime = d03be69386dfda01	3c605f2e9af22601b6dec4daa2c95fc0N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 2664	332	3c605f2e9af22601b6dec4daa2c95fc0N.exe	32
PID 332 wrote to memory of 2664	332	3c605f2e9af22601b6dec4daa2c95fc0N.exe	32
PID 332 wrote to memory of 2664	332	3c605f2e9af22601b6dec4daa2c95fc0N.exe	32
PID 332 wrote to memory of 2664	332	3c605f2e9af22601b6dec4daa2c95fc0N.exe	32
PID 2664 wrote to memory of 2832	2664	tasksche.exe	33
PID 2664 wrote to memory of 2832	2664	tasksche.exe	33
PID 2664 wrote to memory of 2832	2664	tasksche.exe	33
PID 2664 wrote to memory of 2832	2664	tasksche.exe	33

C:\Users\Admin\AppData\Local\Temp\3c605f2e9af22601b6dec4daa2c95fc0N.exe
"C:\Users\Admin\AppData\Local\Temp\3c605f2e9af22601b6dec4daa2c95fc0N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:332
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2664 -s 36
    3⤵
    - Program crash
    PID:2832

C:\Users\Admin\AppData\Local\Temp\3c605f2e9af22601b6dec4daa2c95fc0N.exe
C:\Users\Admin\AppData\Local\Temp\3c605f2e9af22601b6dec4daa2c95fc0N.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

1

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
250ff99090260532ff0acf9da52e8602

SHA1
f51193260ef8396caf576c432ddaece649928a6b

SHA256
faeebe09f45e15faf27a262ef3780feed5b4c3e885cad37742635fd490d74109

SHA512
be5fefd2744a2277b6ac1a24899e6112775e0e48fd7d7868032a7984bb84cbafdb9e628682e21650a5521ba1168ca3686079842b83e2a946f41b47e8dae2b475

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