quasar | 45a7baa72cc53ffec5c9c7c8f4bef8ca6323f24a43c6f0baec29c70f3bbfce35

Analysis

max time kernel
888s
max time network
897s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
23-01-2025 13:11

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General

Target

Client-built.exe
Size

3.1MB
MD5

5ff1c7a31e2aeb8f5e998884bd5bcdd3
SHA1

f02a220ced830d2ac29d42a3cc4c72a68b9f4068
SHA256

45a7baa72cc53ffec5c9c7c8f4bef8ca6323f24a43c6f0baec29c70f3bbfce35
SHA512

47ab416e032b917745acb7720411280803676ba63ef195a58786b3a0cba4803d88816e8ae740181e0af8ee1e7bd9dfe3aecfc26a806d19a6efc5e2c1ed4a38d2
SSDEEP

49152:uvIt62XlaSFNWPjljiFa2RoUYI9P541vSLomdeTHHB72eh2NT:uvE62XlaSFNWPjljiFXRoUYI9P59

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.56.1:4782

Mutex

4933039f-7ad7-40a8-b70d-365558f6056c

Attributes

encryption_key
EA7BEE3E368EF7D787AB8E01A4A119314D7B324C
install_name
nigga.exe
log_directory
Logs
reconnect_delay
3000
startup_key
niggas
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/3984-1-0x0000000000C50000-0x0000000000F74000-memory.dmp	family_quasar
behavioral1/files/0x0028000000046157-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
64	nigga.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
4364	schtasks.exe
2804	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3984	Client-built.exe
Token: SeDebugPrivilege	64	nigga.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 4364	3984	Client-built.exe	85
PID 3984 wrote to memory of 4364	3984	Client-built.exe	85
PID 3984 wrote to memory of 64	3984	Client-built.exe	87
PID 3984 wrote to memory of 64	3984	Client-built.exe	87
PID 64 wrote to memory of 2804	64	nigga.exe	90
PID 64 wrote to memory of 2804	64	nigga.exe	90

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\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "niggas" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\nigga.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4364
- C:\Users\Admin\AppData\Roaming\SubDir\nigga.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\nigga.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:64
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "niggas" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\nigga.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2804

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\nigga.exe

Filesize
3.1MB

MD5
5ff1c7a31e2aeb8f5e998884bd5bcdd3

SHA1
f02a220ced830d2ac29d42a3cc4c72a68b9f4068

SHA256
45a7baa72cc53ffec5c9c7c8f4bef8ca6323f24a43c6f0baec29c70f3bbfce35

SHA512
47ab416e032b917745acb7720411280803676ba63ef195a58786b3a0cba4803d88816e8ae740181e0af8ee1e7bd9dfe3aecfc26a806d19a6efc5e2c1ed4a38d2

Download Submit
memory/64-6-0x00007FF8DCDB0000-0x00007FF8DD872000-memory.dmp

Filesize
10.8MB

Download
memory/64-7-0x00007FF8DCDB0000-0x00007FF8DD872000-memory.dmp

Filesize
10.8MB

Download
memory/64-8-0x000000001B7A0000-0x000000001B7F0000-memory.dmp

Filesize
320KB

Download
memory/64-9-0x000000001C7C0000-0x000000001C872000-memory.dmp

Filesize
712KB

Download
memory/64-10-0x00007FF8DCDB0000-0x00007FF8DD872000-memory.dmp

Filesize
10.8MB

Download
memory/3984-0-0x00007FF8DCDB3000-0x00007FF8DCDB5000-memory.dmp

Filesize
8KB

Download
memory/3984-1-0x0000000000C50000-0x0000000000F74000-memory.dmp

Filesize
3.1MB

Download
memory/3984-2-0x00007FF8DCDB0000-0x00007FF8DD872000-memory.dmp

Filesize
10.8MB

Download
memory/3984-5-0x00007FF8DCDB0000-0x00007FF8DD872000-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