quasar | 4fda59b0a26d2f592d55df2fbfba352b2bb9b9509215b87869f05cbfe4f32b27

Analysis

max time kernel
35s
max time network
35s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-12-2024 21:43

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General

Target

Seron.exe
Size

3.1MB
MD5

60ae8e68cd5cac022863c76ef85f45c0
SHA1

effc67a7495954ebf0454e9dfde6873d68b91ab9
SHA256

4fda59b0a26d2f592d55df2fbfba352b2bb9b9509215b87869f05cbfe4f32b27
SHA512

6132ea7e8e5800d74fa972fc0623e65a5f7834efa9140c331d6f009af02a9c0e8f7b90c6733e1da655234bd89b6582339e9f8f45bb80f141123972df641a20ad
SSDEEP

49152:rvelL26AaNeWgPhlmVqvMQ7XSKOBxPESEDk/iZLoGdFzMKTHHB72eh2NT:rvOL26AaNeWgPhlmVqkQ7XSKQxwp

Score

10^/10

quasar seron spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Seron

nigeboc465-58875.portmap.host:58875

Mutex

eb8602ec-8a0d-4322-b9a0-544571be5a2d

Attributes

encryption_key
8BD9150EEC3DA71ED82080D7AEB7C165A58C889F
install_name
f8mk7ZGwVUpulm.exe
log_directory
Logs
reconnect_delay
3000
startup_key
f8mk7ZGwVUpulm
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
behavioral2/memory/1404-1-0x0000000000560000-0x0000000000884000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b93-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3572	f8mk7ZGwVUpulm.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
2940	schtasks.exe
1456	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1404	Seron.exe
Token: SeDebugPrivilege	3572	f8mk7ZGwVUpulm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3572	f8mk7ZGwVUpulm.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2940	1404	Seron.exe	83
PID 1404 wrote to memory of 2940	1404	Seron.exe	83
PID 1404 wrote to memory of 3572	1404	Seron.exe	85
PID 1404 wrote to memory of 3572	1404	Seron.exe	85
PID 3572 wrote to memory of 1456	3572	f8mk7ZGwVUpulm.exe	86
PID 3572 wrote to memory of 1456	3572	f8mk7ZGwVUpulm.exe	86

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\Seron.exe
"C:\Users\Admin\AppData\Local\Temp\Seron.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "f8mk7ZGwVUpulm" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2940
- C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "f8mk7ZGwVUpulm" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1456

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\f8mk7ZGwVUpulm.exe

Filesize
3.1MB

MD5
60ae8e68cd5cac022863c76ef85f45c0

SHA1
effc67a7495954ebf0454e9dfde6873d68b91ab9

SHA256
4fda59b0a26d2f592d55df2fbfba352b2bb9b9509215b87869f05cbfe4f32b27

SHA512
6132ea7e8e5800d74fa972fc0623e65a5f7834efa9140c331d6f009af02a9c0e8f7b90c6733e1da655234bd89b6582339e9f8f45bb80f141123972df641a20ad

Download Submit
memory/1404-0-0x00007FF8BCC83000-0x00007FF8BCC85000-memory.dmp

Filesize
8KB

Download
memory/1404-1-0x0000000000560000-0x0000000000884000-memory.dmp

Filesize
3.1MB

Download
memory/1404-2-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/1404-9-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/3572-10-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/3572-11-0x00007FF8BCC80000-0x00007FF8BD741000-memory.dmp

Filesize
10.8MB

Download
memory/3572-12-0x000000001BCF0000-0x000000001BD40000-memory.dmp

Filesize
320KB

Download
memory/3572-13-0x000000001BE00000-0x000000001BEB2000-memory.dmp

Filesize
712KB

Download
memory/3572-16-0x000000001BDB0000-0x000000001BDC2000-memory.dmp

Filesize
72KB

Download
memory/3572-17-0x000000001C540000-0x000000001C57C000-memory.dmp

Filesize
240KB

Download
memory/3572-18-0x00007FF8BCC80000-0x00007FF8BD741000-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