quasar | 768a227e5aa261aa0874c31ddd3069783bad6f9963d1b6422879c4cc0368e85f

Analysis

max time kernel
298s
max time network
300s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2024, 16:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Exodus.exe
Size

3.1MB
MD5

bec3e464678accc2e79d7d6a965df8c8
SHA1

3aa1473e714c37a886e47363b89fc7d0a1dde2d7
SHA256

768a227e5aa261aa0874c31ddd3069783bad6f9963d1b6422879c4cc0368e85f
SHA512

556f89d50cebee601ffeb247c11dad83b99d763d3673afc1d9e96c0a173b611ad88135a8f63c9cc1588a9d3e65d04b0a1f9ddd67d4b8ec30aa5f6a0bbe417f05
SSDEEP

49152:Jvht62XlaSFNWPjljiFa2RoUYI5xrEDkYk/JxaoGdZTHHB72eh2NT:JvL62XlaSFNWPjljiFXRoUYI5xFs

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.56.1:4782

Mutex

8fde6e55-a760-4124-8db0-c35d8826b33b

Attributes

encryption_key
A606BBF3ED6B131B2AE59080A334668BA1692C31
install_name
Exodus.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Update
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/1120-1-0x00000000001E0000-0x000000000050C000-memory.dmp	family_quasar
behavioral1/files/0x0007000000023ca1-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4748	Exodus.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
3500	schtasks.exe
1484	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1120	Exodus.exe
Token: SeDebugPrivilege	4748	Exodus.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4748	Exodus.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 1484	1120	Exodus.exe	84
PID 1120 wrote to memory of 1484	1120	Exodus.exe	84
PID 1120 wrote to memory of 4748	1120	Exodus.exe	86
PID 1120 wrote to memory of 4748	1120	Exodus.exe	86
PID 4748 wrote to memory of 3500	4748	Exodus.exe	87
PID 4748 wrote to memory of 3500	4748	Exodus.exe	87

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\Exodus.exe
"C:\Users\Admin\AppData\Local\Temp\Exodus.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Exodus.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1484
- C:\Users\Admin\AppData\Roaming\SubDir\Exodus.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Exodus.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4748
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Exodus.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3500

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Exodus.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Exodus.exe

Filesize
3.1MB

MD5
bec3e464678accc2e79d7d6a965df8c8

SHA1
3aa1473e714c37a886e47363b89fc7d0a1dde2d7

SHA256
768a227e5aa261aa0874c31ddd3069783bad6f9963d1b6422879c4cc0368e85f

SHA512
556f89d50cebee601ffeb247c11dad83b99d763d3673afc1d9e96c0a173b611ad88135a8f63c9cc1588a9d3e65d04b0a1f9ddd67d4b8ec30aa5f6a0bbe417f05

Download Submit
memory/1120-0-0x00007FFEEDD43000-0x00007FFEEDD45000-memory.dmp

Filesize
8KB

Download
memory/1120-1-0x00000000001E0000-0x000000000050C000-memory.dmp

Filesize
3.2MB

Download
memory/1120-2-0x00007FFEEDD40000-0x00007FFEEE801000-memory.dmp

Filesize
10.8MB

Download
memory/1120-9-0x00007FFEEDD40000-0x00007FFEEE801000-memory.dmp

Filesize
10.8MB

Download
memory/4748-10-0x00007FFEEDD40000-0x00007FFEEE801000-memory.dmp

Filesize
10.8MB

Download
memory/4748-11-0x00007FFEEDD40000-0x00007FFEEE801000-memory.dmp

Filesize
10.8MB

Download
memory/4748-12-0x0000000002690000-0x00000000026E0000-memory.dmp

Filesize
320KB

Download
memory/4748-13-0x000000001B7D0000-0x000000001B882000-memory.dmp

Filesize
712KB

Download
memory/4748-14-0x00007FFEEDD40000-0x00007FFEEE801000-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