quasar | debb1fc4bbe5a6ee929d11766367ccc6f641610469fbd8e704895683db6f7360

Analysis

max time kernel
127s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 06:43

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General

Target

injector.exe
Size

3.1MB
MD5

7d13d756b342ff87ce8db9749afac263
SHA1

97ca7f6dfbda61b1f81eedd15ac782caedd74db5
SHA256

debb1fc4bbe5a6ee929d11766367ccc6f641610469fbd8e704895683db6f7360
SHA512

4683fffbde6993ed877f73b87b39ee40e712d822f18341bd20787183771af73cd07f9757a08a334b58be6ef61186db5f7285402ea5e90886654ecfa3085b8438
SSDEEP

49152:LvmI22SsaNYfdPBldt698dBcjHVWxNESEyk/iMLoGdBkTHHB72eh2NT:Lvr22SsaNYfdPBldt6+dBcjHAxpS

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.100.2:4444

Mutex

72f080a6-63a5-4cb8-b261-46434c791afc

Attributes

encryption_key
6B74F0C858B7E90573D4E97997F2A082B9781250
install_name
Panel.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 family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2588-1-0x0000000000650000-0x0000000000974000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b84-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3824	Panel.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\SubDir	injector.exe
File opened for modification	C:\Windows\system32\SubDir\Panel.exe	Panel.exe
File opened for modification	C:\Windows\system32\SubDir	Panel.exe
File created	C:\Windows\system32\SubDir\Panel.exe	injector.exe
File opened for modification	C:\Windows\system32\SubDir\Panel.exe	injector.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2588	injector.exe
Token: SeDebugPrivilege	3824	Panel.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3824	Panel.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3824	Panel.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3824	Panel.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 3824	2588	injector.exe	83
PID 2588 wrote to memory of 3824	2588	injector.exe	83

C:\Users\Admin\AppData\Local\Temp\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\system32\SubDir\Panel.exe
  "C:\Windows\system32\SubDir\Panel.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:3824

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\system32\SubDir\Panel.exe

Filesize
3.1MB

MD5
7d13d756b342ff87ce8db9749afac263

SHA1
97ca7f6dfbda61b1f81eedd15ac782caedd74db5

SHA256
debb1fc4bbe5a6ee929d11766367ccc6f641610469fbd8e704895683db6f7360

SHA512
4683fffbde6993ed877f73b87b39ee40e712d822f18341bd20787183771af73cd07f9757a08a334b58be6ef61186db5f7285402ea5e90886654ecfa3085b8438

Download Submit
memory/2588-0-0x00007FFDC4013000-0x00007FFDC4015000-memory.dmp

Filesize
8KB

Download
memory/2588-1-0x0000000000650000-0x0000000000974000-memory.dmp

Filesize
3.1MB

Download
memory/2588-2-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/2588-9-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/3824-10-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/3824-11-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download
memory/3824-12-0x000000001C760000-0x000000001C7B0000-memory.dmp

Filesize
320KB

Download
memory/3824-13-0x000000001C870000-0x000000001C922000-memory.dmp

Filesize
712KB

Download
memory/3824-14-0x00007FFDC4010000-0x00007FFDC4AD1000-memory.dmp

Filesize
10.8MB

Download