wannacry | a894b41925b991003059be51033d36a4799b503a071ee6e838b7ffbcfd3c926e

General

Target

2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Size

2.2MB
MD5

16b9f1d317cdf9f8cda1f09eae33c43a
SHA1

1564dfa8e6e9ec87dceb8bd62b8ac3d83828af29
SHA256

a894b41925b991003059be51033d36a4799b503a071ee6e838b7ffbcfd3c926e
SHA512

0668526e231ca61797b99e4ba9f3936eb06ecd0eb4275b16d3db20445657a885b6e51136ce7eedbb489cabcb50f5136d4028edd06b75b22ca088f547387cb886
SSDEEP

49152:QnpEKUacBVQej/1INRx+TSqTdX1HkQo6SAA+nvn:QpyfBhz1aRxcSUDk36SAjvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3272) 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
2896	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 opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\09EHCS87.txt	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\09EHCS87.txt	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\65HJFLG7.txt	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\65HJFLG7.txt	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259446557	tasksche.exe
File created	C:\Windows\eee.exe	tasksche.exe

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	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}\WpadDecisionTime = 70583a166c1bdb01	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-d8-a8-d2-50-50\WpadDecisionTime = 70583a166c1bdb01	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-d8-a8-d2-50-50\WpadDecision = "0"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}\WpadDecisionReason = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-d8-a8-d2-50-50	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}\WpadNetworkName = "Network 3"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}\WpadDecision = "0"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-d8-a8-d2-50-50\WpadDecisionReason = "1"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F95E9BA1-0E35-4017-8957-753B546B9775}\c6-d8-a8-d2-50-50	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2896	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32
PID 2532 wrote to memory of 2896	2532	2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2532
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2896

C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-10-10_16b9f1d317cdf9f8cda1f09eae33c43a_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2984

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
2.0MB

MD5
35908f5d4cbe7845474819374e432d8e

SHA1
b1260aa1a1e45c8d1bb523889f0cd4df3a49b343

SHA256
7e10ca3d50031df5a50b2362370945ff24efc89a3090a8af70abb163cff2709f

SHA512
490960fb8c88dd1485c7808164819238a89c15fbc6c93df690aa020b43d5c41d5513edac39b3cc95a4662b655691df4559034d3eed56a1f19a51d55abf9c36a8

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