wannacry | 24e166f94f190c9dcbde6742a2561e92071b62be7f00ea67050bee380d7ce103

General

Target

2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Size

2.2MB
MD5

1b49978f9a03ef4f36890b61bf838fed
SHA1

5142c29081f89af8631771fd4f557585bfa18fc8
SHA256

24e166f94f190c9dcbde6742a2561e92071b62be7f00ea67050bee380d7ce103
SHA512

1d82eac6d18251c96dfef16a615e8ff004027795bc075819bb4de92aa678e2a70c5fd32fc649b01e70f13a0a71aa389f65473a438d4b1f8dfeea1c70c0073266
SSDEEP

6144:eE9l9ynqIYVTH5DgSgNajldktM0XXrCIagQhMV9qbBLIwYSv3AiiVjAqZfAgbJ3q:eebLgmluCtgQhMbaIuAvVLJAmd3An

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3226) 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
1056	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\History\History.IE5	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1060	1056	WerFault.exe	84
4376	1056	WerFault.exe	84

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	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4692 wrote to memory of 1056	4692	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe	84
PID 4692 wrote to memory of 1056	4692	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe	84
PID 4692 wrote to memory of 1056	4692	2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4692
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1056
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 216
    3⤵
    - Program crash
    PID:1060
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 260
    3⤵
    - Program crash
    PID:4376

C:\Users\Admin\AppData\Local\Temp\2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-12-24_1b49978f9a03ef4f36890b61bf838fed_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1056 -ip 1056
1⤵
PID:4580

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1056 -ip 1056
1⤵
PID:2528

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\tasksche.exe

Filesize
2.0MB

MD5
d96d2b632caa0daeaf3dcf7adde853c5

SHA1
387470e1ef47acdfc8f3d553cadf94f59880346a

SHA256
ca9b1d16046c426c99ab759c7d8c109e3b6b631cbbeb6ae60a78ea21e60bb90d

SHA512
df84732aa82b1edfef67c5de50dec58c5fb25df47906b849928cfa11c301d4a1fc02b6aafd51189c7553e5caabe0143dd07cc3ddc42dfd4a569ff1038fce5524

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Analysis

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