wannacry | 2677c44d5e6c2a6eded55afbf3ea9833ad4d49517f168a21f6d3a2ff2db5aad9

General

Target

202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Size

5.0MB
MD5

6dd98738d86ddbc32bb2092ffbe842e4
SHA1

c742f4483c81a443d19b9d1b7f1ad6a5ede5cd4e
SHA256

2677c44d5e6c2a6eded55afbf3ea9833ad4d49517f168a21f6d3a2ff2db5aad9
SHA512

7c81e9aa252e5a1ae46c589b623924a31ffafe8575bb45721adbfe3234fa757bde167f1d880c89f88ed2c4ac4fd4df21256ce7457c8a13490a7a86327401d4de
SSDEEP

49152:QnpEKvnEEeZezw2uvgyd7+KnT2becwT6DGMIBHuLZy:Qpqi9ywKSbevWSdOLZ

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (2111) 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
1052	tasksche.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259533231	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

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	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}\WpadDecisionReason = "1"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}\f6-f5-22-4e-3c-5d	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-f5-22-4e-3c-5d\WpadDecisionTime = 7003a92d6208db01	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-f5-22-4e-3c-5d\WpadDecision = "0"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}\WpadNetworkName = "Network 3"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-f5-22-4e-3c-5d	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}\WpadDecisionTime = 7003a92d6208db01	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{979EA6AF-43B1-4C36-B9E1-19C27ED718B4}\WpadDecision = "0"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-f5-22-4e-3c-5d\WpadDecisionReason = "1"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1052	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32
PID 2132 wrote to memory of 1052	2132	202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe	32

C:\Users\Admin\AppData\Local\Temp\202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2132
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1052

C:\Users\Admin\AppData\Local\Temp\202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe
C:\Users\Admin\AppData\Local\Temp\202409166dd98738d86ddbc32bb2092ffbe842e4wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2964

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
58ce76cd318f056a1cab5d87082615c5

SHA1
37c1ed968f4c69c2c9773ed37df3a581aa065c19

SHA256
f82bbdfc6091207e3c704bc71985d4140ee365c705f6eea6791b8f3a48ad148f

SHA512
6fe139161456558051c9926a4fcc36d47452fc100818beeb08f9423d0adf69b13c02a710aaaaaa8e3301b7acda9746ea4981106e9fc119a21dc3a2a668bcc40a

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