vanillarat | 4c477e0e78863415e64ce9656ef2d1db0e45e60d02ccd21ad52ae51f637815f1

Reason

Machine shutdown

General

Target

TeamViewer_Setup.exe
Size

470KB
MD5

17e792b0bb256533ce3fda3a2c4a093a
SHA1

901d60993c45332419f9f8619dec044e2a9fc41a
SHA256

4c477e0e78863415e64ce9656ef2d1db0e45e60d02ccd21ad52ae51f637815f1
SHA512

e5cea3e26bb612067546e7eb8e21689a98a1c6ff032ff466eface6cee1cb8c547880efe1bc9e2046e121e637e6fa032fb311b1b22aa18d501bfbc15970e448eb
SSDEEP

6144:hqly+DJZKBI0FyYeY4eoiJ+sCFv1A4Inlz+:SOyYrZos+xFvIl6

Score

10^/10

vanillarat evasion persistence rat trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

VanillaRat
VanillaRat is an advanced remote administration tool coded in C#.
rat vanillarat

Vanilla Rat payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/1016-120-0x0000000000DC0000-0x0000000000E3E000-memory.dmp	vanillarat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\EsetNOD32 = "C:\\Windows\\System32\\dllhоst.exe"	reg.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dllhоst.exe	TeamViewer_Setup.exe
File created	C:\Windows\SysWOW64\install.cmd	TeamViewer_Setup.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
3100	reg.exe
4552	reg.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1016	TeamViewer_Setup.exe
Token: SeShutdownPrivilege	1912	shutdown.exe
Token: SeRemoteShutdownPrivilege	1912	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3352	LogonUI.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1016 wrote to memory of 3764	1016	TeamViewer_Setup.exe	71
PID 1016 wrote to memory of 3764	1016	TeamViewer_Setup.exe	71
PID 1016 wrote to memory of 3764	1016	TeamViewer_Setup.exe	71
PID 1016 wrote to memory of 1440	1016	TeamViewer_Setup.exe	72
PID 1016 wrote to memory of 1440	1016	TeamViewer_Setup.exe	72
PID 1016 wrote to memory of 1440	1016	TeamViewer_Setup.exe	72
PID 3764 wrote to memory of 3100	3764	cmd.exe	73
PID 3764 wrote to memory of 3100	3764	cmd.exe	73
PID 3764 wrote to memory of 3100	3764	cmd.exe	73
PID 1440 wrote to memory of 4552	1440	cmd.exe	74
PID 1440 wrote to memory of 4552	1440	cmd.exe	74
PID 1440 wrote to memory of 4552	1440	cmd.exe	74
PID 1440 wrote to memory of 1912	1440	cmd.exe	75
PID 1440 wrote to memory of 1912	1440	cmd.exe	75
PID 1440 wrote to memory of 1912	1440	cmd.exe	75

C:\Users\Admin\AppData\Local\Temp\TeamViewer_Setup.exe
"C:\Users\Admin\AppData\Local\Temp\TeamViewer_Setup.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1016
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v EsetNOD32 /t REG_SZ /d C:\Windows\System32\dllhоst.exe /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3764
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v EsetNOD32 /t REG_SZ /d C:\Windows\System32\dllhоst.exe /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:3100
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\install.cmd
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
    3⤵
    - UAC bypass
    - Modifies registry key
    PID:4552
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -t 1
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1912

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3aeb855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\install.cmd

Filesize
139B

MD5
6bb1de604664795e452c73659ff8ced7

SHA1
93587cb366f8f46ad592f4eb9850837e1cafef73

SHA256
69e87d18a60bc161d236af5471c6598b6897e297d2b26f0b3e9a63bd4475501f

SHA512
e71dda2217b6bf338e8ade43249d7a726ee93d504760c11694232b1d4b15d41557d8f61f451f6c8b67f86b9acc16e214d2dc479fed24c4e67bd1169dff553bcd

Download Submit
memory/1016-120-0x0000000000DC0000-0x0000000000E3E000-memory.dmp

Filesize
504KB

Download
memory/1016-121-0x00000000057F0000-0x000000000588C000-memory.dmp

Filesize
624KB

Download
memory/1016-122-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download
memory/1016-128-0x0000000073DC0000-0x00000000744AE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads