wannacry | 781131d24dc2e1354157b0625652b48aa5c43ce59b7dcfa5e5c73025001c1fbc

General

Target

20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Size

2.2MB
MD5

bbb5e94e00a573d4a166385f171fea3a
SHA1

d6493e22542b6129d0741b0239003a4da060d692
SHA256

781131d24dc2e1354157b0625652b48aa5c43ce59b7dcfa5e5c73025001c1fbc
SHA512

b4df5f17f889d625585458deb290d61986bf52e0e7a28d99d8c42d70d17381d2888ca7a8a1e2e558c01bd916315825b484101f350f0370c484511fff086c4b77
SSDEEP

49152:QnpEKUv9wC7n0fCum3iDimIf1X0NSqTdX1Hk76SAARdhnvn:Qpyv+afN3iOmIfyNSUDk76SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3241) 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
2776	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	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\OTSM36VQ.txt	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\OTSM36VQ.txt	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\IOC1DXZG.txt	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\IOC1DXZG.txt	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_259436511	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	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-4e-36-e0-b9-b7\WpadDecisionReason = "1"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}\WpadDecisionReason = "1"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}\WpadDecision = "0"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-4e-36-e0-b9-b7	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}\WpadDecisionTime = 3078a66b3e11db01	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}\c6-4e-36-e0-b9-b7	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-4e-36-e0-b9-b7\WpadDecision = "0"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0980013B-8D0E-44AE-94C5-023B40F164C2}\WpadNetworkName = "Network 3"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c6-4e-36-e0-b9-b7\WpadDecisionTime = 3078a66b3e11db01	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2776	tasksche.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31
PID 2580 wrote to memory of 2776	2580	20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe	31

C:\Users\Admin\AppData\Local\Temp\20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
"C:\Users\Admin\AppData\Local\Temp\20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2580
- 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:2776

C:\Users\Admin\AppData\Local\Temp\20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe
C:\Users\Admin\AppData\Local\Temp\20240927bbb5e94e00a573d4a166385f171fea3awannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1940

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
f02c54e357b280e0e4413170597737e1

SHA1
6491033e28305fdaff04a18a79e8657749071902

SHA256
1607162457a0881ae209228b3a55199ed8488479735315f342314ad0809304a8

SHA512
f29218457152fb0d852f90fcb2d658cb1d50ddbb0df76351ed8e2a65fbf0594ab1280a900e9b2fb7fee4fdc2b831acaf40cdf00977f1480413b5edb8e25b0b4d

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