quasar | 5bdd21c031e8d79b4bd9fc49dbb612d8a24fc652cf6df24c0fcb473c5abcfed8

General

Target

TikTokBot.exe
Size

534KB
MD5

22916453f988c9660b4c7c12b7e021b3
SHA1

f662549f7d5fb24fe72c2f5f82e1d661b9efcdff
SHA256

5bdd21c031e8d79b4bd9fc49dbb612d8a24fc652cf6df24c0fcb473c5abcfed8
SHA512

7df8cb2fc2b4da6f99e53fb7496621fcb6c4cba7c8ecd40ae763ac5ac6c599520339465337b7b7e4bccf988701af7a87055377187c63d41ae60d7f0f291f6c65
SSDEEP

6144:l8fGxBIgrx8kFYLTiMkbCs0KrTXLYzAR7bloVhfSP8tTsKv8CZ45uusDGy3V8/GR:BPx7FYPiMTsLXczA2tS2sKUCBujq

Score

10^/10

quasar venomrat slave discovery evasion rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Slave

C2

eu-west-36307.packetriot.net:22471

Mutex

VNM_MUTEX_c2q7y2ayYutZ2XaYe7

Attributes

encryption_key
uKN8xUJGqzjjCLO8arNy
install_name
Mm2Dupe.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svchost
subdirectory
SubDir

Signatures

Contains code to disable Windows Defender 4 IoCs

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

Processes:

resource	yara_rule
behavioral1/memory/2696-1-0x0000000000860000-0x00000000008EC000-memory.dmp	disable_win_def
\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe	disable_win_def
behavioral1/memory/2700-9-0x0000000000D30000-0x0000000000DBC000-memory.dmp	disable_win_def
behavioral1/memory/1500-81-0x00000000003E0000-0x000000000046C000-memory.dmp	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

TikTokBot.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	TikTokBot.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	TikTokBot.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	TikTokBot.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	TikTokBot.exe

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2696-1-0x0000000000860000-0x00000000008EC000-memory.dmp	family_quasar
\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe	family_quasar
behavioral1/memory/2700-9-0x0000000000D30000-0x0000000000DBC000-memory.dmp	family_quasar
behavioral1/memory/1500-81-0x00000000003E0000-0x000000000046C000-memory.dmp	family_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:

Mm2Dupe.exe

pid process

2700 Mm2Dupe.exe
Loads dropped DLL 1 IoCs

Processes:

TikTokBot.exe

pid process

2696 TikTokBot.exe

pid	process
2700	Mm2Dupe.exe

pid	process
2696	TikTokBot.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

TikTokBot.exe

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

2 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
2	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

schtasks.exeMm2Dupe.execmd.execmd.execmd.exePING.EXETikTokBot.exepowershell.exeschtasks.exechcp.comTikTokBot.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Mm2Dupe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TikTokBot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TikTokBot.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs
Adversaries may check for Internet connectivity on compromised systems.
discovery

Internet Connection Discovery
T1016.001

Processes:

PING.EXE

pid process

2060 PING.EXE
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

2060 PING.EXE
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

2832 schtasks.exe
1956 schtasks.exe

pid	process
2060	PING.EXE

pid	process
2060	PING.EXE

pid	process
2832	schtasks.exe
1956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exeTikTokBot.exeTikTokBot.exe

pid	process
2632	powershell.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
2696	TikTokBot.exe
1500	TikTokBot.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

TikTokBot.exepowershell.exeMm2Dupe.exeTikTokBot.exe

description	pid	process
Token: SeDebugPrivilege	2696	TikTokBot.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	2700	Mm2Dupe.exe
Token: SeDebugPrivilege	2700	Mm2Dupe.exe
Token: SeDebugPrivilege	1500	TikTokBot.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Mm2Dupe.exe

pid process

2700 Mm2Dupe.exe

pid	process
2700	Mm2Dupe.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

TikTokBot.exeMm2Dupe.execmd.execmd.exe

description	pid	process	target process
PID 2696 wrote to memory of 2832	2696	TikTokBot.exe	schtasks.exe
PID 2696 wrote to memory of 2832	2696	TikTokBot.exe	schtasks.exe
PID 2696 wrote to memory of 2832	2696	TikTokBot.exe	schtasks.exe
PID 2696 wrote to memory of 2832	2696	TikTokBot.exe	schtasks.exe
PID 2696 wrote to memory of 2700	2696	TikTokBot.exe	Mm2Dupe.exe
PID 2696 wrote to memory of 2700	2696	TikTokBot.exe	Mm2Dupe.exe
PID 2696 wrote to memory of 2700	2696	TikTokBot.exe	Mm2Dupe.exe
PID 2696 wrote to memory of 2700	2696	TikTokBot.exe	Mm2Dupe.exe
PID 2696 wrote to memory of 2632	2696	TikTokBot.exe	powershell.exe
PID 2696 wrote to memory of 2632	2696	TikTokBot.exe	powershell.exe
PID 2696 wrote to memory of 2632	2696	TikTokBot.exe	powershell.exe
PID 2696 wrote to memory of 2632	2696	TikTokBot.exe	powershell.exe
PID 2700 wrote to memory of 1956	2700	Mm2Dupe.exe	schtasks.exe
PID 2700 wrote to memory of 1956	2700	Mm2Dupe.exe	schtasks.exe
PID 2700 wrote to memory of 1956	2700	Mm2Dupe.exe	schtasks.exe
PID 2700 wrote to memory of 1956	2700	Mm2Dupe.exe	schtasks.exe
PID 2696 wrote to memory of 2576	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2576	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2576	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2576	2696	TikTokBot.exe	cmd.exe
PID 2576 wrote to memory of 2892	2576	cmd.exe	cmd.exe
PID 2576 wrote to memory of 2892	2576	cmd.exe	cmd.exe
PID 2576 wrote to memory of 2892	2576	cmd.exe	cmd.exe
PID 2576 wrote to memory of 2892	2576	cmd.exe	cmd.exe
PID 2696 wrote to memory of 2924	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2924	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2924	2696	TikTokBot.exe	cmd.exe
PID 2696 wrote to memory of 2924	2696	TikTokBot.exe	cmd.exe
PID 2924 wrote to memory of 2532	2924	cmd.exe	chcp.com
PID 2924 wrote to memory of 2532	2924	cmd.exe	chcp.com
PID 2924 wrote to memory of 2532	2924	cmd.exe	chcp.com
PID 2924 wrote to memory of 2532	2924	cmd.exe	chcp.com
PID 2924 wrote to memory of 2060	2924	cmd.exe	PING.EXE
PID 2924 wrote to memory of 2060	2924	cmd.exe	PING.EXE
PID 2924 wrote to memory of 2060	2924	cmd.exe	PING.EXE
PID 2924 wrote to memory of 2060	2924	cmd.exe	PING.EXE
PID 2924 wrote to memory of 1500	2924	cmd.exe	TikTokBot.exe
PID 2924 wrote to memory of 1500	2924	cmd.exe	TikTokBot.exe
PID 2924 wrote to memory of 1500	2924	cmd.exe	TikTokBot.exe
PID 2924 wrote to memory of 1500	2924	cmd.exe	TikTokBot.exe

C:\Users\Admin\AppData\Local\Temp\TikTokBot.exe
"C:\Users\Admin\AppData\Local\Temp\TikTokBot.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Loads dropped DLL
- Windows security modification
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\TikTokBot.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2832
- C:\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "svchost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1956
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2892
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\TEyxD90Oiqrm.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2924
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2532
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2060
- - C:\Users\Admin\AppData\Local\Temp\TikTokBot.exe
    "C:\Users\Admin\AppData\Local\Temp\TikTokBot.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1500

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab8D82.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TEyxD90Oiqrm.bat

Filesize
206B

MD5
c6acb2e32a0c885ecb35ee314cb76207

SHA1
1d421e0df41df66a6661d4ce1ac8f031afd4ebbb

SHA256
846ec963f8a34d68ff3c4f2c9b3d111343514317c91ccdd0bedd071c21dc5f59

SHA512
9c3092aa16abdd8032baa0da481ba69f41b6a108fc4d1eeb58ca020c8fe91c0b58260b1e9b6052b9dfb4094aeeead4b9f85fa312dbc4af48c4ee857e58d36a9f

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8DA4.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\Users\Admin\AppData\Roaming\SubDir\Mm2Dupe.exe

Filesize
534KB

MD5
22916453f988c9660b4c7c12b7e021b3

SHA1
f662549f7d5fb24fe72c2f5f82e1d661b9efcdff

SHA256
5bdd21c031e8d79b4bd9fc49dbb612d8a24fc652cf6df24c0fcb473c5abcfed8

SHA512
7df8cb2fc2b4da6f99e53fb7496621fcb6c4cba7c8ecd40ae763ac5ac6c599520339465337b7b7e4bccf988701af7a87055377187c63d41ae60d7f0f291f6c65

Download Submit
memory/1500-81-0x00000000003E0000-0x000000000046C000-memory.dmp

Filesize
560KB

Download
memory/2696-1-0x0000000000860000-0x00000000008EC000-memory.dmp

Filesize
560KB

Download
memory/2696-2-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2696-0-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2696-80-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2696-67-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2696-68-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2700-10-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2700-70-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2700-69-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2700-9-0x0000000000D30000-0x0000000000DBC000-memory.dmp

Filesize
560KB

Download
memory/2700-11-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads