quasar | 30adee2f7cba21cc4a48c262c26a34846c5f094182934402b6195da76b4b8f5e

Analysis

max time kernel
13s
max time network
32s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
01-02-2025 22:27

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General

Target

KAZZAK Nova/KAZZAK Nova/Installer.exe
Size

3.1MB
MD5

c85c392d4f402f6d1efe69a397874fc8
SHA1

d7bf20fc60a832f2c101fb47133fde314c164427
SHA256

e33a67ca41bd7f1dbe94489e953d2a6d720dccd5fb82d62353946a193be862eb
SHA512

605c12a4140fb1a18f76112040704c9c41a7b78b887324b12852400b56ab1c7e20d1587dfdc9ed62de1480eecaeb0e5b6f845157637aeecc429bdd60a068c971
SSDEEP

49152:3vrI22SsaNYfdPBldt698dBcjHZTRJ6VbR3LoGdkTHHB72eh2NT:3vU22SsaNYfdPBldt6+dBcjHZTRJ6n

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

kaziahlds-23371.portmap.io:23371

Mutex

04d20254-5898-4b4a-8396-e1aacfd3225f

Attributes

encryption_key
1127B18519097512D1F8F01C3CC393354B9F8404
install_name
Loader.exe
log_directory
Logs
reconnect_delay
3000
startup_key
KAZZAK
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
behavioral1/memory/3476-1-0x0000000000E20000-0x0000000001144000-memory.dmp	family_quasar
behavioral1/files/0x001900000002aaa2-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3940	Loader.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
3152	schtasks.exe
3244	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3476	Installer.exe
Token: SeDebugPrivilege	3940	Loader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3940	Loader.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3476 wrote to memory of 3152	3476	Installer.exe	77
PID 3476 wrote to memory of 3152	3476	Installer.exe	77
PID 3476 wrote to memory of 3940	3476	Installer.exe	79
PID 3476 wrote to memory of 3940	3476	Installer.exe	79
PID 3940 wrote to memory of 3244	3940	Loader.exe	80
PID 3940 wrote to memory of 3244	3940	Loader.exe	80

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

C:\Users\Admin\AppData\Local\Temp\KAZZAK Nova\KAZZAK Nova\Installer.exe
"C:\Users\Admin\AppData\Local\Temp\KAZZAK Nova\KAZZAK Nova\Installer.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "KAZZAK" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3152
- C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3940
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "KAZZAK" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3244

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Loader.exe

Filesize
3.1MB

MD5
c85c392d4f402f6d1efe69a397874fc8

SHA1
d7bf20fc60a832f2c101fb47133fde314c164427

SHA256
e33a67ca41bd7f1dbe94489e953d2a6d720dccd5fb82d62353946a193be862eb

SHA512
605c12a4140fb1a18f76112040704c9c41a7b78b887324b12852400b56ab1c7e20d1587dfdc9ed62de1480eecaeb0e5b6f845157637aeecc429bdd60a068c971

Download Submit
memory/3476-0-0x00007FFF4BCD3000-0x00007FFF4BCD5000-memory.dmp

Filesize
8KB

Download
memory/3476-1-0x0000000000E20000-0x0000000001144000-memory.dmp

Filesize
3.1MB

Download
memory/3476-2-0x00007FFF4BCD0000-0x00007FFF4C792000-memory.dmp

Filesize
10.8MB

Download
memory/3476-9-0x00007FFF4BCD0000-0x00007FFF4C792000-memory.dmp

Filesize
10.8MB

Download
memory/3940-10-0x00007FFF4BCD0000-0x00007FFF4C792000-memory.dmp

Filesize
10.8MB

Download
memory/3940-11-0x00007FFF4BCD0000-0x00007FFF4C792000-memory.dmp

Filesize
10.8MB

Download
memory/3940-12-0x000000001C460000-0x000000001C4B0000-memory.dmp

Filesize
320KB

Download
memory/3940-13-0x000000001C570000-0x000000001C622000-memory.dmp

Filesize
712KB

Download
memory/3940-16-0x000000001C510000-0x000000001C522000-memory.dmp

Filesize
72KB

Download
memory/3940-17-0x000000001CD80000-0x000000001CDBC000-memory.dmp

Filesize
240KB

Download
memory/3940-18-0x00007FFF4BCD0000-0x00007FFF4C792000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads