wannacry | f298a21286c9948100853d881226a676b870460647ae1784a7e162728b58ca3a

General

Target

2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Size

5.0MB
MD5

0a40f7135697a723606ea6e55e568187
SHA1

ce16a00485f50e0954592b9c1b129b4528f4c330
SHA256

f298a21286c9948100853d881226a676b870460647ae1784a7e162728b58ca3a
SHA512

9428f0a45c71792620c6d4765b61f50133dc872abd4ae90f27269fb45d1b564cf6b5f088380ff60ac0cf095900c85777b34e8ea1c622df9b5a5e2d21d0a52578
SSDEEP

6144:eE9l9ynRIYVTH5DgSgNajldktM0XXrCIai62ChoV9qbBLIwYQuy8DLq:e1bLgmluCti62ChobaIMu7L

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3262) 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
3084	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\IE	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	3084	WerFault.exe	87

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	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 404 wrote to memory of 3084	404	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	87
PID 404 wrote to memory of 3084	404	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	87
PID 404 wrote to memory of 3084	404	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:404
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3084
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3084 -s 220
    3⤵
    - Program crash
    PID:2676

C:\Users\Admin\AppData\Local\Temp\2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3084 -ip 3084
1⤵
PID:456

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
4d5d9436529181361f61987c181d743b

SHA1
62e01a30b9199cf5a4c6b61a077b5584c6184c91

SHA256
261c267a0aa633d21f3f5fa7ecd720da5963128a84b8035d0c8ec632771c25c9

SHA512
89edfddd134dcd67294d44cc81780e3b0d3562281ce54e13c61342445c68340d24df67169885a30f3a0b42c97d1ceb3b74500fd8159fde63258219454d52ab97

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Analysis

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