quasar | e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52

Analysis

max time kernel
94s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 23:30

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General

Target

Seron.exe
Size

3.1MB
MD5

3d3c3272d41c20dd8a12826e75af36a9
SHA1

33f41b11b07bb5bfd07b6eefc1df6b898e1d052f
SHA256

e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52
SHA512

3700538f7796f5254c0c5ef7be1f43e117ad65af2836dc2d6ec5faaa99651b4796bab77b53118e5ce24032540a5674df7027709a762a305b6007c9126ca417ef
SSDEEP

49152:DvqlL26AaNeWgPhlmVqvMQ7XSKDS8wbR4LoGdzTHHB72eh2NT:DvSL26AaNeWgPhlmVqkQ7XSKDS83

Score

10^/10

quasar seron spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Seron

a4hrb4kc9z-59858.portmap.host:59858

Mutex

2ac9af47-8868-455d-8ff0-aea73f3bb28f

Attributes

encryption_key
8BD9150EEC3DA71ED82080D7AEB7C165A58C889F
install_name
vn3gqb4ZDoPYX3.exe
log_directory
Logs
reconnect_delay
3000
startup_key
sKnqGpLs82z7bl
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/4700-1-0x00000000006E0000-0x0000000000A04000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b60-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3680	vn3gqb4ZDoPYX3.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File created	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	Seron.exe
File opened for modification	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	Seron.exe
File opened for modification	C:\Program Files\SubDir	Seron.exe
File opened for modification	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	vn3gqb4ZDoPYX3.exe
File opened for modification	C:\Program Files\SubDir	vn3gqb4ZDoPYX3.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
2364	schtasks.exe
3156	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	Seron.exe
Token: SeDebugPrivilege	3680	vn3gqb4ZDoPYX3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3680	vn3gqb4ZDoPYX3.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 2364	4700	Seron.exe	83
PID 4700 wrote to memory of 2364	4700	Seron.exe	83
PID 4700 wrote to memory of 3680	4700	Seron.exe	85
PID 4700 wrote to memory of 3680	4700	Seron.exe	85
PID 3680 wrote to memory of 3156	3680	vn3gqb4ZDoPYX3.exe	86
PID 3680 wrote to memory of 3156	3680	vn3gqb4ZDoPYX3.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⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "sKnqGpLs82z7bl" /sc ONLOGON /tr "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2364
- C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe
  "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3680
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "sKnqGpLs82z7bl" /sc ONLOGON /tr "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3156

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:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe

Filesize
3.1MB

MD5
3d3c3272d41c20dd8a12826e75af36a9

SHA1
33f41b11b07bb5bfd07b6eefc1df6b898e1d052f

SHA256
e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52

SHA512
3700538f7796f5254c0c5ef7be1f43e117ad65af2836dc2d6ec5faaa99651b4796bab77b53118e5ce24032540a5674df7027709a762a305b6007c9126ca417ef

Download Submit
memory/3680-10-0x00007FFAC9040000-0x00007FFAC9B01000-memory.dmp

Filesize
10.8MB

Download
memory/3680-11-0x00007FFAC9040000-0x00007FFAC9B01000-memory.dmp

Filesize
10.8MB

Download
memory/3680-12-0x00000000023C0000-0x0000000002410000-memory.dmp

Filesize
320KB

Download
memory/3680-13-0x000000001C690000-0x000000001C742000-memory.dmp

Filesize
712KB

Download
memory/3680-14-0x00007FFAC9040000-0x00007FFAC9B01000-memory.dmp

Filesize
10.8MB

Download
memory/3680-17-0x000000001BEB0000-0x000000001BEC2000-memory.dmp

Filesize
72KB

Download
memory/3680-18-0x000000001CE90000-0x000000001CECC000-memory.dmp

Filesize
240KB

Download
memory/4700-0-0x00007FFAC9043000-0x00007FFAC9045000-memory.dmp

Filesize
8KB

Download
memory/4700-1-0x00000000006E0000-0x0000000000A04000-memory.dmp

Filesize
3.1MB

Download
memory/4700-2-0x00007FFAC9040000-0x00007FFAC9B01000-memory.dmp

Filesize
10.8MB

Download
memory/4700-9-0x00007FFAC9040000-0x00007FFAC9B01000-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