wannacry | 35b4648bae8c821b09ccf42c52a0df6df7d1a15ba0634333ff7b587a91356583

General

Target

2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Size

2.2MB
MD5

4fda05b95c801ac8969f25df35577b2b
SHA1

a329db850275d368348603131a2953ebc36d5128
SHA256

35b4648bae8c821b09ccf42c52a0df6df7d1a15ba0634333ff7b587a91356583
SHA512

fe0bda3d97646f626249ec6b7fa27db4d5f987f1d2bd8c376a88f64fde601dc07cb315aec6f04f71220575a5d0cf282583dec9745b87ac8147ec25e6a1d3b327
SSDEEP

24576:QbLguriIfEcQdIVUacMNgef0QeQjG/D8kIqRYoAdNLK:QnpEKUacBVQej/1IN

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3243) 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
4864	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240634625	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 4864	4100	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe	86
PID 4100 wrote to memory of 4864	4100	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe	86
PID 4100 wrote to memory of 4864	4100	2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4100
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  PID:4864

C:\Users\Admin\AppData\Local\Temp\2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe
C:\Users\Admin\AppData\Local\Temp\2023-08-25_4fda05b95c801ac8969f25df35577b2b_wannacry_JC.exe -m security
1⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
2c48f29b22c250a7cb06153d8ebe2c38

SHA1
f6b94a14f52f73d85a1954b2c3a7260c7aa851aa

SHA256
4ce8192f06b492f184ba1232e37aa24fb974b1b8c99788efc80c61f4c50fdb5f

SHA512
ef03ec9fd406e87fff789591d0d8dd45a034d9a236c381a4ffd91ab048b570cdf5f07af4975091a43b9678230693493e8e5053f0f8263f01b84b9ed37eec53e3

Download Submit
C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
2c48f29b22c250a7cb06153d8ebe2c38

SHA1
f6b94a14f52f73d85a1954b2c3a7260c7aa851aa

SHA256
4ce8192f06b492f184ba1232e37aa24fb974b1b8c99788efc80c61f4c50fdb5f

SHA512
ef03ec9fd406e87fff789591d0d8dd45a034d9a236c381a4ffd91ab048b570cdf5f07af4975091a43b9678230693493e8e5053f0f8263f01b84b9ed37eec53e3

Download Submit

Analysis

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