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 (3128) 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
2812	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 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\69GN672S.txt	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\69GN672S.txt	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\TWQY1FDG.txt	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\TWQY1FDG.txt	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
2764	2812	WerFault.exe	31

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	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.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	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-10-fb-c1-ff-27\WpadDecision = "0"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	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 = "1"	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 (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-10-fb-c1-ff-27\WpadDecisionReason = "1"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-10-fb-c1-ff-27\WpadDecisionTime = d049f27c10e4da01	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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\Wpad	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\fa-10-fb-c1-ff-27	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	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
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0108000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}\WpadDecisionTime = d049f27c10e4da01	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}\WpadDecisionReason = "1"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}\WpadDecision = "0"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}\WpadNetworkName = "Network 3"	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{417C53A7-7DF3-48B5-ACDA-ACF489BC8AF7}\fa-10-fb-c1-ff-27	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 2812	1080	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	31
PID 1080 wrote to memory of 2812	1080	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	31
PID 1080 wrote to memory of 2812	1080	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	31
PID 1080 wrote to memory of 2812	1080	2024-08-01_0a40f7135697a723606ea6e55e568187_wannacry.exe	31
PID 2812 wrote to memory of 2764	2812	tasksche.exe	32
PID 2812 wrote to memory of 2764	2812	tasksche.exe	32
PID 2812 wrote to memory of 2764	2812	tasksche.exe	32
PID 2812 wrote to memory of 2764	2812	tasksche.exe	32

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:1080
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2812 -s 36
    3⤵
    - Program crash
    PID:2764

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:2136

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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