quasar | 23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7

Analysis

max time kernel
134s
max time network
144s
platform
windows7_x64
resource
win7v20201028
submitted
10-11-2020 10:53

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General

Target

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
Size

534KB
MD5

f811e2467c4093bffa92ec60e7157500
SHA1

2d9c29b8d7156619d144e14ffc2a1ab12424b883
SHA256

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7
SHA512

f32962a0f05e2918472a74632515596e2152e5e7fd2300c0238aeec73ca03fc2b35301ed9ef3f0a3e42e978c08d562dcd113ddb4ed9b86762f40cd3a59349f5d

Score

10^/10

quasar venomrat evasion rat rootkit spyware stealer trojan

Malware Config

Signatures

Contains code to disable Windows Defender 3 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral1/files/0x00050000000130cf-4.dat	disable_win_def
behavioral1/files/0x00050000000130cf-6.dat	disable_win_def
behavioral1/files/0x00050000000130cf-7.dat	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
rat rootkit stealer venomrat

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid	Process
1108	Client.exe

Loads dropped DLL 1 IoCs

Processes:

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

pid	Process
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
1	ip-api.com

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

Processes:

schtasks.exeschtasks.exe

pid	Process
1692	schtasks.exe
748	schtasks.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
1536	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exe23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

pid	Process
1352	powershell.exe
1352	powershell.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
1704	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exepowershell.exeClient.exe23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

description	pid	Process
Token: SeDebugPrivilege	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
Token: SeDebugPrivilege	1352	powershell.exe
Token: SeDebugPrivilege	1108	Client.exe
Token: SeDebugPrivilege	1108	Client.exe
Token: SeDebugPrivilege	1704	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid	Process
1108	Client.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exeClient.execmd.execmd.exe

description	pid	Process	procid_target
PID 1588 wrote to memory of 1692	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	28
PID 1588 wrote to memory of 1692	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	28
PID 1588 wrote to memory of 1692	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	28
PID 1588 wrote to memory of 1692	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	28
PID 1588 wrote to memory of 1108	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	30
PID 1588 wrote to memory of 1108	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	30
PID 1588 wrote to memory of 1108	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	30
PID 1588 wrote to memory of 1108	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	30
PID 1588 wrote to memory of 1352	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	31
PID 1588 wrote to memory of 1352	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	31
PID 1588 wrote to memory of 1352	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	31
PID 1588 wrote to memory of 1352	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	31
PID 1108 wrote to memory of 748	1108	Client.exe	35
PID 1108 wrote to memory of 748	1108	Client.exe	35
PID 1108 wrote to memory of 748	1108	Client.exe	35
PID 1108 wrote to memory of 748	1108	Client.exe	35
PID 1588 wrote to memory of 1356	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	37
PID 1588 wrote to memory of 1356	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	37
PID 1588 wrote to memory of 1356	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	37
PID 1588 wrote to memory of 1356	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	37
PID 1356 wrote to memory of 2012	1356	cmd.exe	39
PID 1356 wrote to memory of 2012	1356	cmd.exe	39
PID 1356 wrote to memory of 2012	1356	cmd.exe	39
PID 1356 wrote to memory of 2012	1356	cmd.exe	39
PID 1588 wrote to memory of 1464	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	40
PID 1588 wrote to memory of 1464	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	40
PID 1588 wrote to memory of 1464	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	40
PID 1588 wrote to memory of 1464	1588	23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe	40
PID 1464 wrote to memory of 368	1464	cmd.exe	42
PID 1464 wrote to memory of 368	1464	cmd.exe	42
PID 1464 wrote to memory of 368	1464	cmd.exe	42
PID 1464 wrote to memory of 368	1464	cmd.exe	42
PID 1464 wrote to memory of 1536	1464	cmd.exe	43
PID 1464 wrote to memory of 1536	1464	cmd.exe	43
PID 1464 wrote to memory of 1536	1464	cmd.exe	43
PID 1464 wrote to memory of 1536	1464	cmd.exe	43
PID 1464 wrote to memory of 1704	1464	cmd.exe	44
PID 1464 wrote to memory of 1704	1464	cmd.exe	44
PID 1464 wrote to memory of 1704	1464	cmd.exe	44
PID 1464 wrote to memory of 1704	1464	cmd.exe	44

C:\Users\Admin\AppData\Local\Temp\23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
"C:\Users\Admin\AppData\Local\Temp\23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe"
1⤵
- Loads dropped DLL
- Windows security modification
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "TwitchFollowy" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:1692
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "TwitchFollowy" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:748
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
    3⤵
    PID:2012
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\MrVoTPjsJpO6.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1464
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:368
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - Runs ping.exe
    PID:1536
- - C:\Users\Admin\AppData\Local\Temp\23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe
    "C:\Users\Admin\AppData\Local\Temp\23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Install Root Certificate

T1130

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MrVoTPjsJpO6.bat

MD5
01e563fcabdecbf25aaa96ba8a35bb75

SHA1
1f0e2b8f6349e24f397622ae357fa702ce26d57e

SHA256
5046742e9f825dd999d0efac14d0713b2eb6093ed97b5f1cbd9f1a4dc6a172a0

SHA512
6e07b386d51ab649fe41baaf83e595dcc2a653edb90907c3bfc0495456587e83986999cdcc8af58b674bb7c49e28fd8355e78def45d689533cb14aab1db55b85

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5
f811e2467c4093bffa92ec60e7157500

SHA1
2d9c29b8d7156619d144e14ffc2a1ab12424b883

SHA256
23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7

SHA512
f32962a0f05e2918472a74632515596e2152e5e7fd2300c0238aeec73ca03fc2b35301ed9ef3f0a3e42e978c08d562dcd113ddb4ed9b86762f40cd3a59349f5d

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5
f811e2467c4093bffa92ec60e7157500

SHA1
2d9c29b8d7156619d144e14ffc2a1ab12424b883

SHA256
23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7

SHA512
f32962a0f05e2918472a74632515596e2152e5e7fd2300c0238aeec73ca03fc2b35301ed9ef3f0a3e42e978c08d562dcd113ddb4ed9b86762f40cd3a59349f5d

Download Submit
\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5
f811e2467c4093bffa92ec60e7157500

SHA1
2d9c29b8d7156619d144e14ffc2a1ab12424b883

SHA256
23210003a18c718c32fdd5de4d4ac93ed751458b7971c824f1aad0620b05bff7

SHA512
f32962a0f05e2918472a74632515596e2152e5e7fd2300c0238aeec73ca03fc2b35301ed9ef3f0a3e42e978c08d562dcd113ddb4ed9b86762f40cd3a59349f5d

Download Submit
memory/368-55-0x0000000000000000-mapping.dmp

Download
memory/748-16-0x0000000000000000-mapping.dmp

Download
memory/1108-5-0x0000000000000000-mapping.dmp

Download
memory/1108-8-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/1108-9-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download
memory/1352-20-0x0000000005670000-0x0000000005671000-memory.dmp

Filesize
4KB

Download
memory/1352-12-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/1352-13-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/1352-14-0x0000000004850000-0x0000000004851000-memory.dmp

Filesize
4KB

Download
memory/1352-15-0x00000000011E0000-0x00000000011E1000-memory.dmp

Filesize
4KB

Download
memory/1352-11-0x0000000000000000-mapping.dmp

Download
memory/1352-17-0x00000000052E0000-0x00000000052E1000-memory.dmp

Filesize
4KB

Download
memory/1352-49-0x0000000006330000-0x0000000006331000-memory.dmp

Filesize
4KB

Download
memory/1352-25-0x0000000005780000-0x0000000005781000-memory.dmp

Filesize
4KB

Download
memory/1352-26-0x0000000006140000-0x0000000006141000-memory.dmp

Filesize
4KB

Download
memory/1352-33-0x00000000062A0000-0x00000000062A1000-memory.dmp

Filesize
4KB

Download
memory/1352-34-0x0000000006200000-0x0000000006201000-memory.dmp

Filesize
4KB

Download
memory/1352-48-0x0000000006320000-0x0000000006321000-memory.dmp

Filesize
4KB

Download
memory/1356-50-0x0000000000000000-mapping.dmp

Download
memory/1464-53-0x0000000000000000-mapping.dmp

Download
memory/1536-56-0x0000000000000000-mapping.dmp

Download
memory/1588-0-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

Download
memory/1588-1-0x00000000008C0000-0x00000000008C1000-memory.dmp

Filesize
4KB

Download
memory/1692-3-0x0000000000000000-mapping.dmp

Download
memory/1704-57-0x0000000000000000-mapping.dmp

Download
memory/1704-58-0x0000000000000000-mapping.dmp

Download
memory/1704-59-0x0000000074670000-0x0000000074D5E000-memory.dmp

Filesize
6.9MB

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memory/1704-60-0x0000000001260000-0x0000000001261000-memory.dmp

Filesize
4KB

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memory/2012-52-0x0000000000000000-mapping.dmp

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memory/2012-51-0x0000000000000000-mapping.dmp

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