wannacry | 9fd7738a58eae4e567429180ef023b02a4ff08abc7926c7cba723be8f86395d2

General

Target

2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Size

5.0MB
MD5

bcf5e680822683991cdc6fbcdf5a5e73
SHA1

df5222cadd3213ce0d402d3965c8d5d665b47950
SHA256

9fd7738a58eae4e567429180ef023b02a4ff08abc7926c7cba723be8f86395d2
SHA512

978c19572b939ff00d10d433e3f216176fb61363ea7c09e9f2bd457ebfb73cd76efbd6e03eb5c330c47b371475c5b0a00d6ad4e3acf9c041e4e94513c3d9d2f6
SSDEEP

3072:QV+LydVaND9y/m3aILEVTCW5DgSglPcTcMXaDfldx0dFJtkoeV0XXg6E:GE9l9yeqIYVTH5DgSg8ajldktM0XXrE

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 (3343) 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
2420	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2772	2420	WerFault.exe	32

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	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_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 (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}\WpadDecisionTime = 70de03225b76db01	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}\WpadNetworkName = "Network 3"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}\WpadDecisionReason = "1"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}\f2-a4-37-b1-44-1b	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f2-a4-37-b1-44-1b\WpadDecisionReason = "1"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{2B40A854-515A-4879-8776-C9A20C8725F3}\WpadDecision = "0"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f2-a4-37-b1-44-1b\WpadDecisionTime = 70de03225b76db01	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f016f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f2-a4-37-b1-44-1b	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f2-a4-37-b1-44-1b\WpadDecision = "0"	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 2420	752	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe	32
PID 752 wrote to memory of 2420	752	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe	32
PID 752 wrote to memory of 2420	752	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe	32
PID 752 wrote to memory of 2420	752	2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe	32
PID 2420 wrote to memory of 2772	2420	tasksche.exe	33
PID 2420 wrote to memory of 2772	2420	tasksche.exe	33
PID 2420 wrote to memory of 2772	2420	tasksche.exe	33
PID 2420 wrote to memory of 2772	2420	tasksche.exe	33

C:\Users\Admin\AppData\Local\Temp\2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:752
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2420 -s 36
    3⤵
    - Program crash
    PID:2772

C:\Users\Admin\AppData\Local\Temp\2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-02-03_bcf5e680822683991cdc6fbcdf5a5e73_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1536

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

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
f293a3c6225b3f16b0b44f7321704660

SHA1
2e1604636fcb310401acbeffe26e5ca6a4bfc7d6

SHA256
8b50e60948e4b4c502e740530efff052d7f3af80878ef499c0c88785e2225ffd

SHA512
77c4a026f6621807f9c94cb122c2d69bc711cca1b63fcb62ab01566898f10aea4ffbdcbcdbb0f225d241d00706328c1af83c0aa6fa5e008918d784844445d5fa

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