wannacry | 283f40e9d550833bec101a24fd6fd6fbd9937ed32a51392e818ffff662a1d30a

Resubmissions

13-02-2022 15:34

220213-sz5ftsbch7 10

13-02-2022 15:31

220213-syb3wsbcg4 10

13-02-2022 15:17

220213-sn7rtadbaq 10

Analysis

max time kernel
77s
max time network
115s
platform
windows10_x64
resource
win10-en-20211208
submitted
13-02-2022 15:31

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General

Target

[email protected]
Size

3.4MB
MD5

84c82835a5d21bbcf75a61706d8ab549
SHA1

5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
SHA256

ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
SHA512

90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

Score

10^/10

wannacry discovery ransomware spyware stealer worm

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@[email protected]

Family

wannacry

Ransom Note

Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �

Wallets

12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Executes dropped EXE 3 IoCs

pid	Process
2528	taskdl.exe
4612	taskdl.exe
4876	taskdl.exe

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\StepExport.raw.WNCRYT => C:\Users\Admin\Pictures\StepExport.raw.WNCRY	[email protected]
File renamed	C:\Users\Admin\Pictures\StartUnblock.tif.WNCRYT => C:\Users\Admin\Pictures\StartUnblock.tif.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\StepExport.raw.WNCRYT	[email protected]
File opened for modification	C:\Users\Admin\Pictures\ShowUninstall.png.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\StartUnblock.tif.WNCRYT	[email protected]
File opened for modification	C:\Users\Admin\Pictures\StartUnblock.tif.WNCRY	[email protected]
File opened for modification	C:\Users\Admin\Pictures\StepExport.raw.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\ShowUninstall.png.WNCRYT	[email protected]
File renamed	C:\Users\Admin\Pictures\ShowUninstall.png.WNCRYT => C:\Users\Admin\Pictures\ShowUninstall.png.WNCRY	[email protected]

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD4E3D.tmp	[email protected]
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD4E53.tmp	[email protected]

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1652	icacls.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Signature	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~Mhz	firefox.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	firefox.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	firefox.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings	firefox.exe

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\wanakiwi_0.2.zip:Zone.Identifier	firefox.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	firefox.exe
Token: SeDebugPrivilege	3996	firefox.exe
Token: SeDebugPrivilege	3996	firefox.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3996	firefox.exe
3996	firefox.exe
3996	firefox.exe
3996	firefox.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3996	firefox.exe
3996	firefox.exe
3996	firefox.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3996	firefox.exe
3996	firefox.exe
3996	firefox.exe
3996	firefox.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 1528	1280	[email protected]	70
PID 1280 wrote to memory of 1528	1280	[email protected]	70
PID 1280 wrote to memory of 1528	1280	[email protected]	70
PID 1280 wrote to memory of 1652	1280	[email protected]	72
PID 1280 wrote to memory of 1652	1280	[email protected]	72
PID 1280 wrote to memory of 1652	1280	[email protected]	72
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1432 wrote to memory of 3996	1432	firefox.exe	75
PID 1280 wrote to memory of 2528	1280	[email protected]	76
PID 1280 wrote to memory of 2528	1280	[email protected]	76
PID 1280 wrote to memory of 2528	1280	[email protected]	76
PID 1280 wrote to memory of 1340	1280	[email protected]	77
PID 1280 wrote to memory of 1340	1280	[email protected]	77
PID 1280 wrote to memory of 1340	1280	[email protected]	77
PID 1340 wrote to memory of 4004	1340	cmd.exe	80
PID 1340 wrote to memory of 4004	1340	cmd.exe	80
PID 1340 wrote to memory of 4004	1340	cmd.exe	80
PID 3996 wrote to memory of 856	3996	firefox.exe	82
PID 3996 wrote to memory of 856	3996	firefox.exe	82
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83
PID 3996 wrote to memory of 3812	3996	firefox.exe	83

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1528	attrib.exe

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Modifies extensions of user files
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1280
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:1528
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:1652
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2528
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 192031644766322.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1340
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    PID:4004
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:4612
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:4876

C:\Program Files\Mozilla Firefox\firefox.exe
"C:\Program Files\Mozilla Firefox\firefox.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1432
- C:\Program Files\Mozilla Firefox\firefox.exe
  "C:\Program Files\Mozilla Firefox\firefox.exe"
  2⤵
  - Checks processor information in registry
  - Modifies registry class
  - NTFS ADS
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3996
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3996.0.823011058\296127675" -parentBuildID 20200403170909 -prefsHandle 1500 -prefMapHandle 1492 -prefsLen 1 -prefMapSize 219680 -appdir "C:\Program Files\Mozilla Firefox\browser" - 3996 "\\.\pipe\gecko-crash-server-pipe.3996" 1588 gpu
    3⤵
    PID:856
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3996.3.1865545904\1415142183" -childID 1 -isForBrowser -prefsHandle 2184 -prefMapHandle 1296 -prefsLen 156 -prefMapSize 219680 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 3996 "\\.\pipe\gecko-crash-server-pipe.3996" 2192 tab
    3⤵
    PID:3812
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3996.13.1520495557\2037016142" -childID 2 -isForBrowser -prefsHandle 2864 -prefMapHandle 2860 -prefsLen 1022 -prefMapSize 219680 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 3996 "\\.\pipe\gecko-crash-server-pipe.3996" 2872 tab
    3⤵
    PID:3688
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3996.20.2109508193\795889106" -childID 3 -isForBrowser -prefsHandle 3168 -prefMapHandle 3160 -prefsLen 7013 -prefMapSize 219680 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 3996 "\\.\pipe\gecko-crash-server-pipe.3996" 3240 tab
    3⤵
    PID:3156
- - C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3996.27.1250569094\68935103" -childID 4 -isForBrowser -prefsHandle 4480 -prefMapHandle 4300 -prefsLen 8736 -prefMapSize 219680 -parentBuildID 20200403170909 -appdir "C:\Program Files\Mozilla Firefox\browser" - 3996 "\\.\pipe\gecko-crash-server-pipe.3996" 4744 tab
    3⤵
    PID:4896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1280-134-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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