quasar | 4d358d8b4798bbc28617acdd1a39a820a94bb08f954f69ad1659c1d8c0767ca6

Analysis

max time kernel
96s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-01-2025 01:39

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General

Target

e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe
Size

3.1MB
MD5

b48f94c872bb4e3596924f7f587b0a54
SHA1

748f86a0394486b577978794145328702ac77a62
SHA256

e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de
SHA512

2704c862668c3ad9f9222761b91861b1c84d84021c1309b309f5cd267fc77e542ca2c821dccb2d9ff2f2063dbc5b604204c2969fa68c7a0de3f2e40039655da1
SSDEEP

49152:yvtt62XlaSFNWPjljiFa2RoUYIDHxEESEQk/iRLoGdv1THHB72eh2NT:yvP62XlaSFNWPjljiFXRoUYIbxEh

Score

10^/10

quasar miner spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Miner

154.216.19.144:7000

Mutex

9aaccf69-ec3a-44b7-854b-ecd43ee8e151

Attributes

encryption_key
4A883D3FC8F269324ACDCF0E4B7FFECA042CD47D
install_name
Svc.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Svc
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/384-1-0x00000000008B0000-0x0000000000BD4000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b97-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3928	Svc.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
3604	schtasks.exe
1656	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	384	e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe
Token: SeDebugPrivilege	3928	Svc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3928	Svc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 384 wrote to memory of 3604	384	e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe	83
PID 384 wrote to memory of 3604	384	e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe	83
PID 384 wrote to memory of 3928	384	e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe	85
PID 384 wrote to memory of 3928	384	e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe	85
PID 3928 wrote to memory of 1656	3928	Svc.exe	86
PID 3928 wrote to memory of 1656	3928	Svc.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\e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe
"C:\Users\Admin\AppData\Local\Temp\e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:384
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Svc.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3604
- C:\Users\Admin\AppData\Roaming\SubDir\Svc.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Svc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3928
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Svc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Svc.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1656

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\Svc.exe

Filesize
3.1MB

MD5
b48f94c872bb4e3596924f7f587b0a54

SHA1
748f86a0394486b577978794145328702ac77a62

SHA256
e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de

SHA512
2704c862668c3ad9f9222761b91861b1c84d84021c1309b309f5cd267fc77e542ca2c821dccb2d9ff2f2063dbc5b604204c2969fa68c7a0de3f2e40039655da1

Download Submit
memory/384-0-0x00007FFD2F563000-0x00007FFD2F565000-memory.dmp

Filesize
8KB

Download
memory/384-1-0x00000000008B0000-0x0000000000BD4000-memory.dmp

Filesize
3.1MB

Download
memory/384-2-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/384-8-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/3928-9-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/3928-10-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/3928-11-0x000000001C310000-0x000000001C360000-memory.dmp

Filesize
320KB

Download
memory/3928-12-0x000000001C420000-0x000000001C4D2000-memory.dmp

Filesize
712KB

Download
memory/3928-15-0x000000001C3D0000-0x000000001C3E2000-memory.dmp

Filesize
72KB

Download
memory/3928-16-0x000000001CB60000-0x000000001CB9C000-memory.dmp

Filesize
240KB

Download
memory/3928-17-0x00007FFD2F560000-0x00007FFD30021000-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