quasar | c6820f426b28b93295ca3b768780e8b372424fb72e94b5d0c094b030f53d4721

Analysis

max time kernel
9s
max time network
16s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08-04-2024 08:58

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General

Target

ItroublveTSC.exe
Size

2.0MB
MD5

7c2da2ae36228b8b66ec5e5029e90d08
SHA1

d636baf89fd305a1f694611097ac6e7bcb1f244c
SHA256

c6820f426b28b93295ca3b768780e8b372424fb72e94b5d0c094b030f53d4721
SHA512

93cbc698211b0ab0f96ab3f0eb8d393bcd04580418e08fc6df9b935a7cdd091b619a0edab4771b4c887264b0eef6846e6e08a7be24a8681848a1885206a29960
SSDEEP

49152:DL+qgtiXBVLcHD/QmJqRsVEzCeePMAnUD:OzcBVYHDjcyVMukAUD

Score

10^/10

quasar venomrat office04 evasion rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

zaidtheboii-50153.portmap.host:50153

Mutex

VNM_MUTEX_fNWmZ9wa8oprRXUo73

Attributes

encryption_key
PJRTtGrfOi1c09c0GCYT
install_name
OneDrive.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Microsoft One Drive
subdirectory
Microsoft One Drive

Signatures

Contains code to disable Windows Defender 2 IoCs

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

resource	yara_rule
behavioral2/files/0x0007000000023213-18.dat	disable_win_def
behavioral2/memory/1828-29-0x0000000000FE0000-0x0000000001070000-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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	Microsoft OneDrive.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	Microsoft OneDrive.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	Microsoft OneDrive.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	Microsoft OneDrive.exe

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023213-18.dat	family_quasar
behavioral2/memory/1828-29-0x0000000000FE0000-0x0000000001070000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	ItroublveTSC.exe

Executes dropped EXE 3 IoCs

pid	Process
3952	ItroublveTSC.exe
1828	Microsoft OneDrive.exe
1416	OneDrive.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	Microsoft OneDrive.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	Microsoft OneDrive.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.

flow	ioc
11	ip-api.com

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe	Microsoft OneDrive.exe
File opened for modification	C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe	Microsoft OneDrive.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2624	1416	WerFault.exe	92

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/Job

T1053

pid	Process
1848	schtasks.exe
3712	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1920	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1468	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	Microsoft OneDrive.exe
Token: SeDebugPrivilege	3952	ItroublveTSC.exe
Token: SeDebugPrivilege	1468	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3952	ItroublveTSC.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3952	ItroublveTSC.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 3952	1724	ItroublveTSC.exe	87
PID 1724 wrote to memory of 3952	1724	ItroublveTSC.exe	87
PID 1724 wrote to memory of 3952	1724	ItroublveTSC.exe	87
PID 1724 wrote to memory of 1828	1724	ItroublveTSC.exe	88
PID 1724 wrote to memory of 1828	1724	ItroublveTSC.exe	88
PID 1724 wrote to memory of 1828	1724	ItroublveTSC.exe	88
PID 1828 wrote to memory of 1848	1828	Microsoft OneDrive.exe	90
PID 1828 wrote to memory of 1848	1828	Microsoft OneDrive.exe	90
PID 1828 wrote to memory of 1848	1828	Microsoft OneDrive.exe	90
PID 1828 wrote to memory of 1416	1828	Microsoft OneDrive.exe	92
PID 1828 wrote to memory of 1416	1828	Microsoft OneDrive.exe	92
PID 1828 wrote to memory of 1416	1828	Microsoft OneDrive.exe	92
PID 1828 wrote to memory of 1468	1828	Microsoft OneDrive.exe	93
PID 1828 wrote to memory of 1468	1828	Microsoft OneDrive.exe	93
PID 1828 wrote to memory of 1468	1828	Microsoft OneDrive.exe	93

C:\Users\Admin\AppData\Local\Temp\ItroublveTSC.exe
"C:\Users\Admin\AppData\Local\Temp\ItroublveTSC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe
  "C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:3952
- C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Executes dropped EXE
  - Windows security modification
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Microsoft One Drive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1848
- - C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe
    "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe"
    3⤵
    - Executes dropped EXE
    PID:1416
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Microsoft One Drive" /sc ONLOGON /tr "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe" /rl HIGHEST /f
      4⤵
      Creates scheduled task(s)
      PID:3712
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vtiMpODjWiVx.bat" "
      4⤵
      PID:1676
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        
        PID:2148
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping -n 10 localhost
        5⤵
        Runs ping.exe
        
        PID:1920
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1416 -s 2136
      4⤵
      Program crash
      PID:2624
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1416 -ip 1416
1⤵
PID:844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe

Filesize
550KB

MD5
3fce051fde9fbd1302b4ee16f604553b

SHA1
e137d2e6fa0007ddd0bf3a1215a68b37ef2ed653

SHA256
a34954a87d0f4354a21e40ea0e9a9eee4420f47987d40be854ea7b98d6d36226

SHA512
cb07f753043b7705b0e32bbf4e1ae8ddf6176851562dea567e75a4715b1beb4031d35a43b6bf0bc45d5b2da7430be0d87b6ae61b5b2e07c7c8950bb0247e4a5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zhbtlz0r.mot.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
211B

MD5
3aae0c76943f48941879e875ac0cdee2

SHA1
9f74360a41bc7c6c71be080921d206f716d913ef

SHA256
ea93f9ff3071dc3e3fd65e865eb39fbde57272b8ff15f704d532817dfebb8077

SHA512
fb286088c1f78843e484b60047c5f3d0fc1102ab843e5bd21e049ab141a9e623c5426ee72442ee33041b527c95aa9927e1f76829bc673290f9f82ce917d35ecd

Download Submit
C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe

Filesize
3.9MB

MD5
53f43b1e9d99d6a356a332d9073b4736

SHA1
71e6c5a216a66b2b523b1b022d44c10b276c6195

SHA256
584bf67e7c8e93629e175733fe42907e60916047e68f1b4973d4cbf3dd2c22d6

SHA512
e7c5e4b26309e38dd1dd52b4f509c94fb9f50453e4d5c2ba895b02c48457a15c384866fdeb57185b628f10873ed6a6e6936ad170827f4855c9c5eca15ab8f959

Download Submit
memory/1416-44-0x0000000071A10000-0x00000000721C0000-memory.dmp

Filesize
7.7MB

Download
memory/1416-47-0x00000000058E0000-0x00000000058F0000-memory.dmp

Filesize
64KB

Download
memory/1468-68-0x000000007F720000-0x000000007F730000-memory.dmp

Filesize
64KB

Download
memory/1468-69-0x0000000007720000-0x0000000007752000-memory.dmp

Filesize
200KB

Download
memory/1468-90-0x0000000007C90000-0x0000000007C9E000-memory.dmp

Filesize
56KB

Download
memory/1468-89-0x0000000007C60000-0x0000000007C71000-memory.dmp

Filesize
68KB

Download
memory/1468-88-0x0000000007CE0000-0x0000000007D76000-memory.dmp

Filesize
600KB

Download
memory/1468-87-0x0000000007AD0000-0x0000000007ADA000-memory.dmp

Filesize
40KB

Download
memory/1468-86-0x0000000007A60000-0x0000000007A7A000-memory.dmp

Filesize
104KB

Download
memory/1468-85-0x00000000080A0000-0x000000000871A000-memory.dmp

Filesize
6.5MB

Download
memory/1468-83-0x0000000007960000-0x0000000007A03000-memory.dmp

Filesize
652KB

Download
memory/1468-82-0x0000000006D00000-0x0000000006D1E000-memory.dmp

Filesize
120KB

Download
memory/1468-71-0x000000006EF70000-0x000000006EFBC000-memory.dmp

Filesize
304KB

Download
memory/1468-65-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/1468-64-0x00000000067A0000-0x00000000067EC000-memory.dmp

Filesize
304KB

Download
memory/1468-63-0x0000000006750000-0x000000000676E000-memory.dmp

Filesize
120KB

Download
memory/1468-45-0x0000000005180000-0x00000000051B6000-memory.dmp

Filesize
216KB

Download
memory/1468-46-0x0000000071A10000-0x00000000721C0000-memory.dmp

Filesize
7.7MB

Download
memory/1468-62-0x0000000006350000-0x00000000066A4000-memory.dmp

Filesize
3.3MB

Download
memory/1468-48-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/1468-50-0x0000000005330000-0x0000000005340000-memory.dmp

Filesize
64KB

Download
memory/1468-49-0x0000000005970000-0x0000000005F98000-memory.dmp

Filesize
6.2MB

Download
memory/1468-51-0x0000000005760000-0x0000000005782000-memory.dmp

Filesize
136KB

Download
memory/1468-57-0x0000000005900000-0x0000000005966000-memory.dmp

Filesize
408KB

Download
memory/1724-0-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1724-27-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1724-2-0x0000000000F70000-0x0000000000F80000-memory.dmp

Filesize
64KB

Download
memory/1724-1-0x0000000074840000-0x0000000074DF1000-memory.dmp

Filesize
5.7MB

Download
memory/1828-33-0x0000000005A50000-0x0000000005A60000-memory.dmp

Filesize
64KB

Download
memory/1828-37-0x0000000006840000-0x0000000006852000-memory.dmp

Filesize
72KB

Download
memory/1828-36-0x00000000059A0000-0x0000000005A06000-memory.dmp

Filesize
408KB

Download
memory/1828-39-0x0000000006E80000-0x0000000006EBC000-memory.dmp

Filesize
240KB

Download
memory/1828-29-0x0000000000FE0000-0x0000000001070000-memory.dmp

Filesize
576KB

Download
memory/1828-31-0x0000000071A10000-0x00000000721C0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-38-0x00000000050D0000-0x00000000050E0000-memory.dmp

Filesize
64KB

Download
memory/3952-28-0x0000000071A10000-0x00000000721C0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-35-0x0000000004F00000-0x0000000004F0A000-memory.dmp

Filesize
40KB

Download
memory/3952-34-0x00000000050D0000-0x00000000050E0000-memory.dmp

Filesize
64KB

Download
memory/3952-32-0x0000000004E50000-0x0000000004EE2000-memory.dmp

Filesize
584KB

Download
memory/3952-30-0x0000000005320000-0x00000000058C4000-memory.dmp

Filesize
5.6MB

Download
memory/3952-25-0x00000000001B0000-0x0000000000596000-memory.dmp

Filesize
3.9MB

Download