vanillarat | 7411a95cf987a085c9bb3990cab95b8479e752b1c4370c9c256c07dd64f6b7b9

Reason

Machine shutdown

General

Target

TeamViewer_Setup.exe
Size

470KB
MD5

b3c7ffb0c5ba452d0c68da59f90b39af
SHA1

ee538ad689a49911cc4befae22269b8c3a261caa
SHA256

7411a95cf987a085c9bb3990cab95b8479e752b1c4370c9c256c07dd64f6b7b9
SHA512

d0a89e233aa03983f5b8d7067a923469b48eaac6d24f2a73ce22afdeefa2eb1c2976a69b511c25ff2845b49f43dfd2e68d7083506a162bb3b6669c5ee644b36e
SSDEEP

6144:eqly+sJZKBI09yYeY4eoiJ+sCFv1peInLz+:RRyYrZos+xFvHL6

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

Processes:

reg.exe

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

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

Vanilla Rat payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral3/memory/4584-133-0x00000000005F0000-0x000000000066E000-memory.dmp	vanillarat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

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

Drops file in System32 directory 2 IoCs

Processes:

TeamViewer_Setup.exe

description ioc process

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

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

Processes:

LogonUI.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	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\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "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\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "243"	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\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
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
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exe

pid process

2924 reg.exe
1816 reg.exe

pid	process
2924	reg.exe
1816	reg.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

TeamViewer_Setup.exeshutdown.exe

description	pid	process
Token: SeDebugPrivilege	4584	TeamViewer_Setup.exe
Token: SeShutdownPrivilege	1004	shutdown.exe
Token: SeRemoteShutdownPrivilege	1004	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

3508 LogonUI.exe

pid	process
3508	LogonUI.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

TeamViewer_Setup.execmd.execmd.exe

description	pid	process	target process
PID 4584 wrote to memory of 2380	4584	TeamViewer_Setup.exe	cmd.exe
PID 4584 wrote to memory of 2380	4584	TeamViewer_Setup.exe	cmd.exe
PID 4584 wrote to memory of 2380	4584	TeamViewer_Setup.exe	cmd.exe
PID 4584 wrote to memory of 312	4584	TeamViewer_Setup.exe	cmd.exe
PID 4584 wrote to memory of 312	4584	TeamViewer_Setup.exe	cmd.exe
PID 4584 wrote to memory of 312	4584	TeamViewer_Setup.exe	cmd.exe
PID 2380 wrote to memory of 2924	2380	cmd.exe	reg.exe
PID 2380 wrote to memory of 2924	2380	cmd.exe	reg.exe
PID 2380 wrote to memory of 2924	2380	cmd.exe	reg.exe
PID 312 wrote to memory of 1816	312	cmd.exe	reg.exe
PID 312 wrote to memory of 1816	312	cmd.exe	reg.exe
PID 312 wrote to memory of 1816	312	cmd.exe	reg.exe
PID 312 wrote to memory of 1004	312	cmd.exe	shutdown.exe
PID 312 wrote to memory of 1004	312	cmd.exe	shutdown.exe
PID 312 wrote to memory of 1004	312	cmd.exe	shutdown.exe

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:4584
- 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:2380
- - 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:2924
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\install.cmd
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:312
- - 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:1816
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -t 1
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1004

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3993855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3508

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/4584-133-0x00000000005F0000-0x000000000066E000-memory.dmp

Filesize
504KB

Download
memory/4584-134-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download
memory/4584-135-0x0000000004FC0000-0x000000000505C000-memory.dmp

Filesize
624KB

Download
memory/4584-141-0x0000000074B00000-0x00000000752B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads