quasar | debb1fc4bbe5a6ee929d11766367ccc6f641610469fbd8e704895683db6f7360

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-12-2024 06:33

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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 3 IoCs

resource	yara_rule
behavioral1/memory/1548-1-0x0000000000B40000-0x0000000000E64000-memory.dmp	family_quasar
behavioral1/files/0x0009000000015d03-6.dat	family_quasar
behavioral1/memory/2204-10-0x00000000000B0000-0x00000000003D4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2204	Panel.exe

Drops file in System32 directory 5 IoCs

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

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	1548	injector.exe
Token: SeDebugPrivilege	2204	Panel.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2204	Panel.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2204	Panel.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2204	Panel.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 2204	1548	injector.exe	28
PID 1548 wrote to memory of 2204	1548	injector.exe	28
PID 1548 wrote to memory of 2204	1548	injector.exe	28

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:1548
- 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:2204

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/1548-0-0x000007FEF6163000-0x000007FEF6164000-memory.dmp

Filesize
4KB

Download
memory/1548-1-0x0000000000B40000-0x0000000000E64000-memory.dmp

Filesize
3.1MB

Download
memory/1548-2-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/1548-8-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2204-9-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2204-10-0x00000000000B0000-0x00000000003D4000-memory.dmp

Filesize
3.1MB

Download
memory/2204-11-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2204-12-0x000007FEF6160000-0x000007FEF6B4C000-memory.dmp

Filesize
9.9MB

Download