quasar | 8d6cb8b53bb014815990250638364db29445ef2d2db6eab813933f8f12e60ff4

Analysis

max time kernel
49s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 00:44

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General

Target
ItroublveTSC-master/ItroublveTSC.exe
Size 2.0MB
Sample240426-a3z2eage79
SHA256 c6820f426b28b93295ca3b768780e8b372424fb72e94b5d0c094b030f53d4721
MD5 7c2da2ae36228b8b66ec5e5029e90d08
SHA1 d636baf89fd305a1f694611097ac6e7bcb1f244c
SHA512 93cbc698211b0ab0f96ab3f0eb8d393bcd04580418e08fc6df9b935a7cdd091b619a0edab4771b4c887264b0eef6846e6e08a7be24a8681848a1885206a29960
SSDEEP 49152:DL+qgtiXBVLcHD/QmJqRsVEzCeePMAnUD:OzcBVYHDjcyVMukAUD
MD5 SHA1 SHA512 SSDEEP

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/0x00070000000232bc-18.dat	disable_win_def
behavioral2/memory/1288-29-0x00000000009B0000-0x0000000000A40000-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/0x00070000000232bc-18.dat	family_quasar
behavioral2/memory/1288-29-0x00000000009B0000-0x0000000000A40000-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 2 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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	ItroublveTSC.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	OneDrive.exe

Executes dropped EXE 3 IoCs

pid	Process
1968	ItroublveTSC.exe
1288	Microsoft OneDrive.exe
1124	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
32	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
2588	1124	WerFault.exe	101

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
2976	schtasks.exe
2364	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4396	PING.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3900	powershell.exe
3900	powershell.exe
3900	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1288	Microsoft OneDrive.exe
Token: SeDebugPrivilege	1968	ItroublveTSC.exe
Token: SeDebugPrivilege	3900	powershell.exe
Token: SeDebugPrivilege	1124	OneDrive.exe
Token: SeDebugPrivilege	1124	OneDrive.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1968	ItroublveTSC.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1968	ItroublveTSC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1124	OneDrive.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 1968	1640	ItroublveTSC.exe	92
PID 1640 wrote to memory of 1968	1640	ItroublveTSC.exe	92
PID 1640 wrote to memory of 1968	1640	ItroublveTSC.exe	92
PID 1640 wrote to memory of 1288	1640	ItroublveTSC.exe	93
PID 1640 wrote to memory of 1288	1640	ItroublveTSC.exe	93
PID 1640 wrote to memory of 1288	1640	ItroublveTSC.exe	93
PID 1288 wrote to memory of 2976	1288	Microsoft OneDrive.exe	99
PID 1288 wrote to memory of 2976	1288	Microsoft OneDrive.exe	99
PID 1288 wrote to memory of 2976	1288	Microsoft OneDrive.exe	99
PID 1288 wrote to memory of 1124	1288	Microsoft OneDrive.exe	101
PID 1288 wrote to memory of 1124	1288	Microsoft OneDrive.exe	101
PID 1288 wrote to memory of 1124	1288	Microsoft OneDrive.exe	101
PID 1288 wrote to memory of 3900	1288	Microsoft OneDrive.exe	102
PID 1288 wrote to memory of 3900	1288	Microsoft OneDrive.exe	102
PID 1288 wrote to memory of 3900	1288	Microsoft OneDrive.exe	102
PID 1124 wrote to memory of 2364	1124	OneDrive.exe	105
PID 1124 wrote to memory of 2364	1124	OneDrive.exe	105
PID 1124 wrote to memory of 2364	1124	OneDrive.exe	105
PID 1124 wrote to memory of 2312	1124	OneDrive.exe	107
PID 1124 wrote to memory of 2312	1124	OneDrive.exe	107
PID 1124 wrote to memory of 2312	1124	OneDrive.exe	107
PID 2312 wrote to memory of 3604	2312	cmd.exe	111
PID 2312 wrote to memory of 3604	2312	cmd.exe	111
PID 2312 wrote to memory of 3604	2312	cmd.exe	111
PID 2312 wrote to memory of 4396	2312	cmd.exe	112
PID 2312 wrote to memory of 4396	2312	cmd.exe	112
PID 2312 wrote to memory of 4396	2312	cmd.exe	112

C:\Users\Admin\AppData\Local\Temp\ItroublveTSC-master\ItroublveTSC.exe
"C:\Users\Admin\AppData\Local\Temp\ItroublveTSC-master\ItroublveTSC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1640
- 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:1968
- 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:1288
- - 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:2976
- - C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe
    "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - 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:2364
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ukSOxfHfvfca.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2312
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        
        PID:3604
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping -n 10 localhost
        5⤵
        Runs ping.exe
        
        PID:4396
    - - C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe
        
        "C:\Windows\SysWOW64\Microsoft One Drive\OneDrive.exe"
        5⤵
        
        PID:820
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 2224
      4⤵
      Program crash
      PID:2588
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1124 -ip 1124
1⤵
PID:3992

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3740 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:3424

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

Replay Monitor

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Downloads

Microsoft OneDrive.exe

Path C:\Users\Admin\AppData\Local\Temp\Microsoft OneDrive.exe
Size 550KB
SHA256 a34954a87d0f4354a21e40ea0e9a9eee4420f47987d40be854ea7b98d6d36226
MD5 3fce051fde9fbd1302b4ee16f604553b
SHA1 e137d2e6fa0007ddd0bf3a1215a68b37ef2ed653
SHA512 cb07f753043b7705b0e32bbf4e1ae8ddf6176851562dea567e75a4715b1beb4031d35a43b6bf0bc45d5b2da7430be0d87b6ae61b5b2e07c7c8950bb0247e4a5c
SSDEEP 12288:vjxIhDXIsMCw6IAr0CKfiSHp+vwcZJIgwC7p:v9+IsMCDIAricBIgD
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_sjqokq0i.eey.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sjqokq0i.eey.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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ukSOxfHfvfca.bat

Path C:\Users\Admin\AppData\Local\Temp\ukSOxfHfvfca.bat
Size 211B
SHA256 c0e0aab3c504f5212c69008f91d07c2dc3eed5a774689710257a10eb0032af3f
MD5 3c24028fa1618b79540164803865ea10
SHA1 0d49f78d599b6ad10d1fb668dcc98e4b8bcf3044
SHA512 1b2d38d73dcf8cc03db8b2f37222ffa764d98c3351cdfcc33bbffc3b2eeef4f3d1c971f9a9222425cc3ff49730b39a0e5c16baca7b05fe8146f80c31dd44a8e9
MD5 SHA1 SHA512

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ItroublveTSC.exe

Path C:\Users\Admin\AppData\Roaming\ItroublveTSC.exe
Size 3.9MB
SHA256 584bf67e7c8e93629e175733fe42907e60916047e68f1b4973d4cbf3dd2c22d6
MD5 53f43b1e9d99d6a356a332d9073b4736
SHA1 71e6c5a216a66b2b523b1b022d44c10b276c6195
SHA512 e7c5e4b26309e38dd1dd52b4f509c94fb9f50453e4d5c2ba895b02c48457a15c384866fdeb57185b628f10873ed6a6e6936ad170827f4855c9c5eca15ab8f959
SSDEEP 24576:EDEykfXykf5ykfqykfGykfKykf+ykf2aztwClwUykfqykf/ykf:EoDPDBDiD+DSD2D+gHwUDiDnD
MD5 SHA1 SHA512 SSDEEP

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memory/820-95-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1124-92-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1124-44-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1124-45-0x0000000004D20000-0x0000000004D30000-memory.dmp

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memory/1124-96-0x0000000004D20000-0x0000000004D30000-memory.dmp

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memory/1288-29-0x00000000009B0000-0x0000000000A40000-memory.dmp

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memory/1288-32-0x0000000005460000-0x00000000054F2000-memory.dmp

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memory/1288-33-0x00000000053B0000-0x00000000053C0000-memory.dmp

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memory/1288-71-0x00000000053B0000-0x00000000053C0000-memory.dmp

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memory/1288-27-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1288-31-0x0000000005920000-0x0000000005EC4000-memory.dmp

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memory/1288-36-0x0000000005600000-0x0000000005666000-memory.dmp

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memory/1288-37-0x0000000006210000-0x0000000006222000-memory.dmp

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memory/1288-63-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1288-39-0x0000000006650000-0x000000000668C000-memory.dmp

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memory/1640-2-0x0000000000DA0000-0x0000000000DB0000-memory.dmp

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memory/1640-26-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/1640-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/1640-0-0x0000000074FF0000-0x00000000755A1000-memory.dmp

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memory/1968-38-0x0000000005090000-0x00000000050A0000-memory.dmp

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memory/1968-35-0x0000000004E90000-0x0000000004E9A000-memory.dmp

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memory/1968-34-0x0000000005090000-0x00000000050A0000-memory.dmp

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memory/1968-30-0x0000000000010000-0x00000000003F6000-memory.dmp

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memory/1968-28-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/1968-91-0x0000000005090000-0x00000000050A0000-memory.dmp

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memory/1968-84-0x0000000005090000-0x00000000050A0000-memory.dmp

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memory/1968-64-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/3900-49-0x00000000057D0000-0x0000000005DF8000-memory.dmp

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memory/3900-69-0x00000000066E0000-0x000000000672C000-memory.dmp

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memory/3900-68-0x0000000006500000-0x000000000651E000-memory.dmp

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memory/3900-61-0x0000000006040000-0x0000000006394000-memory.dmp

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memory/3900-72-0x0000000006C60000-0x0000000006C92000-memory.dmp

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memory/3900-73-0x000000006F030000-0x000000006F07C000-memory.dmp

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memory/3900-83-0x0000000006C40000-0x0000000006C5E000-memory.dmp

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memory/3900-51-0x0000000005EF0000-0x0000000005F56000-memory.dmp

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memory/3900-85-0x000000007F920000-0x000000007F930000-memory.dmp

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memory/3900-86-0x0000000006CA0000-0x0000000006D43000-memory.dmp

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memory/3900-87-0x0000000007FD0000-0x000000000864A000-memory.dmp

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memory/3900-88-0x0000000007990000-0x00000000079AA000-memory.dmp

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memory/3900-89-0x0000000007A00000-0x0000000007A0A000-memory.dmp

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memory/3900-90-0x0000000007C10000-0x0000000007CA6000-memory.dmp

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memory/3900-50-0x0000000005E50000-0x0000000005E72000-memory.dmp

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memory/3900-48-0x0000000005190000-0x00000000051A0000-memory.dmp

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memory/3900-93-0x0000000007BB0000-0x0000000007BC1000-memory.dmp

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memory/3900-47-0x0000000005050000-0x0000000005086000-memory.dmp

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memory/3900-46-0x00000000721C0000-0x0000000072970000-memory.dmp

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memory/3900-97-0x00000000721C0000-0x0000000072970000-memory.dmp

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