wannacry | a65e3242d21daa40e0d98927f22755a4718b0116bc9dce5f2894f5603c88c0fe

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-08-2024 07:38

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General

Target

2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Size

5.0MB
MD5

3cd64c9048ab9f41ab1cac98739fa8d7
SHA1

07d96f46f1e2a0d1e5d9274c65004617307e7974
SHA256

a65e3242d21daa40e0d98927f22755a4718b0116bc9dce5f2894f5603c88c0fe
SHA512

c5ad9af07b8631b6555bc160d3ec2db577746a98c270ce9813e195da9206b0b63c44e5e37549ca49bf227f447bdfc1b1005675e88974780c83ff24a0cb9b1e6d
SSDEEP

6144:SE9l9ynqIYVTH5DgSg8ajldktM0XXrP2QhMV9qb:SebLgPlu+QhMb

Score

10^/10

wannacry defense_evasion discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3268) 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 3 IoCs

pid	Process
636	tasksche.exe
2348	tasksche.exe
1860	tasksche.exe

Modifies file permissions 1 TTPs 3 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4308	icacls.exe
3608	icacls.exe
2284	icacls.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
File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 11 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 636	4788	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe	88
PID 4788 wrote to memory of 636	4788	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe	88
PID 4788 wrote to memory of 636	4788	2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe	88
PID 1248 wrote to memory of 2348	1248	cmd.exe	90
PID 1248 wrote to memory of 2348	1248	cmd.exe	90
PID 1248 wrote to memory of 2348	1248	cmd.exe	90
PID 2348 wrote to memory of 3608	2348	tasksche.exe	91
PID 2348 wrote to memory of 3608	2348	tasksche.exe	91
PID 2348 wrote to memory of 3608	2348	tasksche.exe	91
PID 2348 wrote to memory of 4308	2348	tasksche.exe	92
PID 2348 wrote to memory of 4308	2348	tasksche.exe	92
PID 2348 wrote to memory of 4308	2348	tasksche.exe	92
PID 636 wrote to memory of 1860	636	tasksche.exe	105
PID 636 wrote to memory of 1860	636	tasksche.exe	105
PID 636 wrote to memory of 1860	636	tasksche.exe	105
PID 1860 wrote to memory of 2652	1860	tasksche.exe	106
PID 1860 wrote to memory of 2652	1860	tasksche.exe	106
PID 1860 wrote to memory of 2652	1860	tasksche.exe	106
PID 1860 wrote to memory of 3608	1860	tasksche.exe	107
PID 1860 wrote to memory of 3608	1860	tasksche.exe	107
PID 1860 wrote to memory of 3608	1860	tasksche.exe	107
PID 636 wrote to memory of 4072	636	tasksche.exe	119
PID 636 wrote to memory of 4072	636	tasksche.exe	119
PID 636 wrote to memory of 4072	636	tasksche.exe	119
PID 636 wrote to memory of 2284	636	tasksche.exe	120
PID 636 wrote to memory of 2284	636	tasksche.exe	120
PID 636 wrote to memory of 2284	636	tasksche.exe	120

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3608	attrib.exe
2652	attrib.exe
4072	attrib.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4788
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:636
- - C:\ProgramData\oefimrcpcbg941\tasksche.exe
    C:\ProgramData\oefimrcpcbg941\tasksche.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1860
  - - C:\Windows\SysWOW64\attrib.exe
      attrib +h .
      4⤵
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2652
  - - C:\Windows\SysWOW64\icacls.exe
      icacls . /grant Everyone:F /T /C /Q
      4⤵
      Modifies file permissions
      System Location Discovery: System Language Discovery
      PID:3608
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h .
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:4072
- - C:\Windows\SysWOW64\icacls.exe
    icacls . /grant Everyone:F /T /C /Q
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:2284

C:\Users\Admin\AppData\Local\Temp\2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-21_3cd64c9048ab9f41ab1cac98739fa8d7_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:372

C:\Windows\system32\cmd.exe
cmd.exe /c "C:\ProgramData\oefimrcpcbg941\tasksche.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- C:\ProgramData\oefimrcpcbg941\tasksche.exe
  C:\ProgramData\oefimrcpcbg941\tasksche.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h .
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3608
- - C:\Windows\SysWOW64\icacls.exe
    icacls . /grant Everyone:F /T /C /Q
    3⤵
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:4308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
a27cfbfad728fa5ec8e701a6f93cab26

SHA1
deba582c9c8f059590132395f987c2acf54e7a7f

SHA256
c0057fd3141966017014beb71fa2e31d84d3ddd2a9f20e3e6ee26df8165a531f

SHA512
8c095ccb3367903bc5498d0222ee537ef2bbd4f4204fe9a9a9babe2426d8a377240a15892e248e6e252bf3b229eecc8b1c960136988bf3398941e20a1e542b5d

Download Submit
memory/372-10-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/4788-0-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download
memory/4788-9-0x0000000000400000-0x0000000000A72000-memory.dmp

Filesize
6.4MB

Download