quasar | 45a7baa72cc53ffec5c9c7c8f4bef8ca6323f24a43c6f0baec29c70f3bbfce35

Analysis

max time kernel
149s
max time network
150s
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 13:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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 discovery 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/2644-1-0x0000000000E40000-0x0000000001164000-memory.dmp	family_quasar
behavioral1/files/0x002800000004619c-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1120	nigga.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.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
2344	schtasks.exe
1152	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	Client-built.exe
Token: SeDebugPrivilege	1120	nigga.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1152	2644	Client-built.exe	85
PID 2644 wrote to memory of 1152	2644	Client-built.exe	85
PID 2644 wrote to memory of 1120	2644	Client-built.exe	87
PID 2644 wrote to memory of 1120	2644	Client-built.exe	87
PID 1120 wrote to memory of 2344	1120	nigga.exe	88
PID 1120 wrote to memory of 2344	1120	nigga.exe	88

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:2644
- 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:1152
- 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:1120
- - 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:2344

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Downloads\SyncResume.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- System Location Discovery: System Language Discovery
PID:4792

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
3.1MB

MD5
5ff1c7a31e2aeb8f5e998884bd5bcdd3

SHA1
f02a220ced830d2ac29d42a3cc4c72a68b9f4068

SHA256
45a7baa72cc53ffec5c9c7c8f4bef8ca6323f24a43c6f0baec29c70f3bbfce35

SHA512
47ab416e032b917745acb7720411280803676ba63ef195a58786b3a0cba4803d88816e8ae740181e0af8ee1e7bd9dfe3aecfc26a806d19a6efc5e2c1ed4a38d2

Download Submit
memory/1120-6-0x00007FFCD7FA0000-0x00007FFCD8A62000-memory.dmp

Filesize
10.8MB

Download
memory/1120-7-0x00007FFCD7FA0000-0x00007FFCD8A62000-memory.dmp

Filesize
10.8MB

Download
memory/1120-8-0x000000001B7D0000-0x000000001B820000-memory.dmp

Filesize
320KB

Download
memory/1120-9-0x000000001E1F0000-0x000000001E2A2000-memory.dmp

Filesize
712KB

Download
memory/1120-10-0x00007FFCD7FA0000-0x00007FFCD8A62000-memory.dmp

Filesize
10.8MB

Download
memory/2644-0-0x00007FFCD7FA3000-0x00007FFCD7FA5000-memory.dmp

Filesize
8KB

Download
memory/2644-1-0x0000000000E40000-0x0000000001164000-memory.dmp

Filesize
3.1MB

Download
memory/2644-2-0x00007FFCD7FA0000-0x00007FFCD8A62000-memory.dmp

Filesize
10.8MB

Download
memory/2644-5-0x00007FFCD7FA0000-0x00007FFCD8A62000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads