wannacry | ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

Analysis

max time kernel
142s
resource
win7v191014
submitted
10-12-2019 16:22

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General

Target

wannacry.exe
Sample

191210-eg6ml5hv4x
SHA256

ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

Score

10^/10

ransomware persistence worm wannacry

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

Deletes shadow copies 2 TTPs 2 IoCs

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
600	vssadmin.exe
1104	WMIC.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

Loads dropped DLL 5 IoCs

pid	Process
1044	wannacry.exe
824	cscript.exe
1880	cmd.exe
1744	@[email protected]
1888	taskhsvc.exe

Executes dropped EXE 16 IoCs

pid	Process
1896	taskdl.exe
1744	@[email protected]
772	@[email protected]
1888	taskhsvc.exe
988	taskdl.exe
1228	taskse.exe
1904	@[email protected]
600	taskdl.exe
1748	taskse.exe
1104	@[email protected]
1676	taskdl.exe
516	taskse.exe
856	@[email protected]
732	taskdl.exe
984	taskse.exe
1620	@[email protected]

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1744	@[email protected]
772	@[email protected]
1904	@[email protected]
1104	@[email protected]
856	@[email protected]
1620	@[email protected]

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ftqqepmlkbmm513 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tasksche.exe\""

Drops startup file 6 IoCs

description	ioc	Process
File deleted	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD7A2F.tmp	wannacry.exe
File created (read-only)	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD7A0C.tmp	wannacry.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD7A0C.tmp	wannacry.exe
File deleted	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD7A0C.tmp	wannacry.exe
File created (read-only)	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD7A2F.tmp	wannacry.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD7A2F.tmp	wannacry.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc
Set value (str)	\REGISTRY\USER\S-1-5-21-1774239815-1814403401-2200974991-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2004	reg.exe

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
316	attrib.exe

Modifies file permissions 1 TTPs 1 IoCs

File and Directory Permissions Modification

T1222

pid	Process
824	icacls.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 316	1044	wannacry.exe	26
PID 1044 wrote to memory of 824	1044	wannacry.exe	28
PID 1044 wrote to memory of 1896	1044	wannacry.exe	30
PID 1044 wrote to memory of 1228	1044	wannacry.exe	31
PID 1228 wrote to memory of 824	1228	cmd.exe	33
PID 1044 wrote to memory of 1744	1044	wannacry.exe	35
PID 1044 wrote to memory of 1880	1044	wannacry.exe	36
PID 1880 wrote to memory of 772	1880	cmd.exe	38
PID 1744 wrote to memory of 1888	1744	@[email protected]	40
PID 772 wrote to memory of 1444	772	@[email protected]	42
PID 1044 wrote to memory of 988	1044	wannacry.exe	44
PID 1044 wrote to memory of 1228	1044	wannacry.exe	45
PID 1044 wrote to memory of 1904	1044	wannacry.exe	46
PID 1044 wrote to memory of 1880	1044	wannacry.exe	47
PID 1444 wrote to memory of 600	1444	cmd.exe	49
PID 1880 wrote to memory of 2004	1880	cmd.exe	50
PID 1444 wrote to memory of 1104	1444	cmd.exe	52
PID 1044 wrote to memory of 600	1044	wannacry.exe	54
PID 1044 wrote to memory of 1748	1044	wannacry.exe	55
PID 1044 wrote to memory of 1104	1044	wannacry.exe	56
PID 1044 wrote to memory of 1676	1044	wannacry.exe	58
PID 1044 wrote to memory of 516	1044	wannacry.exe	59
PID 1044 wrote to memory of 856	1044	wannacry.exe	60
PID 1044 wrote to memory of 732	1044	wannacry.exe	63
PID 1044 wrote to memory of 984	1044	wannacry.exe	64
PID 1044 wrote to memory of 1620	1044	wannacry.exe	65

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1888	taskhsvc.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeTcbPrivilege	1228	taskse.exe
Token: SeBackupPrivilege	1324	vssvc.exe
Token: SeRestorePrivilege	1324	vssvc.exe
Token: SeAuditPrivilege	1324	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1104	WMIC.exe
Token: SeSecurityPrivilege	1104	WMIC.exe
Token: SeTakeOwnershipPrivilege	1104	WMIC.exe
Token: SeLoadDriverPrivilege	1104	WMIC.exe
Token: SeSystemProfilePrivilege	1104	WMIC.exe
Token: SeSystemtimePrivilege	1104	WMIC.exe
Token: SeProfSingleProcessPrivilege	1104	WMIC.exe
Token: SeIncBasePriorityPrivilege	1104	WMIC.exe
Token: SeCreatePagefilePrivilege	1104	WMIC.exe
Token: SeBackupPrivilege	1104	WMIC.exe
Token: SeRestorePrivilege	1104	WMIC.exe
Token: SeShutdownPrivilege	1104	WMIC.exe
Token: SeDebugPrivilege	1104	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1104	WMIC.exe
Token: SeRemoteShutdownPrivilege	1104	WMIC.exe
Token: SeUndockPrivilege	1104	WMIC.exe
Token: SeManageVolumePrivilege	1104	WMIC.exe
Token: 33	1104	WMIC.exe
Token: 34	1104	WMIC.exe
Token: 35	1104	WMIC.exe
Token: SeTcbPrivilege	1748	taskse.exe
Token: SeTcbPrivilege	516	taskse.exe
Token: SeTcbPrivilege	984	taskse.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1904	@[email protected]

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

C:\Users\Admin\AppData\Local\Temp\wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\wannacry.exe"
1⤵
- Loads dropped DLL
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:316
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:824
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1896
- C:\Windows\SysWOW64\cmd.exe
  cmd /c 183031575998536.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1228
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    - Loads dropped DLL
    PID:824
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Loads dropped DLL
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1744
- - C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
    TaskData\Tor\taskhsvc.exe
    3⤵
    - Loads dropped DLL
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:1888
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:772
  - - C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1444
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin delete shadows /all /quiet
        5⤵
        Deletes shadow copies
        
        PID:600
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        Deletes shadow copies
        Suspicious use of AdjustPrivilegeToken
        
        PID:1104
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:988
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1228
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1904
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "ftqqepmlkbmm513" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "ftqqepmlkbmm513" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
    3⤵
    - Modifies registry key
    PID:2004
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:600
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1748
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1104
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1676
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:516
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:856
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:732
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:984
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1620

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "322372338-141076211-1503080421-146637913-1448740906-34692126-16420535131527021419"
1⤵
PID:1368

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-12734847781643596584423841872201330664-58296503-2063759584-1024489525693646570"
1⤵
PID:1316

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "8856289761894114187-9275907881847916772-547314771133916279919147055511677561116"
1⤵
PID:836

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-746470925-82865348318295620611441479411-19454052101354562987546870319-287147619"
1⤵
PID:600

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "52339743317912531191533318485-1838379674-17789183812137366404-20843443491741399060"
1⤵
PID:1304

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-13183247171887289118-162751310421076480381408615530746642015-1093837671-755781354"
1⤵
PID:1424

C:\Windows\system32\conhost.exe
\??\C:\Windows\system32\conhost.exe "-1402657853-833023408-129039501011449234881236233584-11662924751590932601802886852"
1⤵
PID:1616

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1324

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/824-44-0x0000000002760000-0x0000000002764000-memory.dmp

Filesize
16KB

Download
memory/1044-36-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/1888-237-0x0000000002910000-0x0000000002921000-memory.dmp

Filesize
68KB

Download
memory/1888-70-0x0000000002910000-0x0000000002921000-memory.dmp

Filesize
68KB

Download
memory/1888-69-0x0000000002D20000-0x0000000002D31000-memory.dmp

Filesize
68KB

Download
memory/1888-235-0x0000000002910000-0x0000000002921000-memory.dmp

Filesize
68KB

Download
memory/1888-236-0x0000000002D20000-0x0000000002D31000-memory.dmp

Filesize
68KB

Download
memory/1888-68-0x0000000002910000-0x0000000002921000-memory.dmp

Filesize
68KB

Download
memory/1888-402-0x0000000003100000-0x0000000003111000-memory.dmp

Filesize
68KB

Download
memory/1888-403-0x0000000003510000-0x0000000003521000-memory.dmp

Filesize
68KB

Download
memory/1888-404-0x0000000003100000-0x0000000003111000-memory.dmp

Filesize
68KB

Download