quasar | e3d17377d59312e36a5e3b503a7259ffeaac4dd742222be0ad9a8ea443d3f7de

Analysis

max time kernel
33s
max time network
35s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
05-01-2025 14:29

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General

Target

1.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
behavioral1/memory/3180-1-0x0000000000B50000-0x0000000000E74000-memory.dmp	family_quasar
behavioral1/files/0x00280000000461a8-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2420	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
4196	schtasks.exe
1100	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3180	1.exe
Token: SeDebugPrivilege	2420	Svc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2420	Svc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4196	3180	1.exe	82
PID 3180 wrote to memory of 4196	3180	1.exe	82
PID 3180 wrote to memory of 2420	3180	1.exe	84
PID 3180 wrote to memory of 2420	3180	1.exe	84
PID 2420 wrote to memory of 1100	2420	Svc.exe	85
PID 2420 wrote to memory of 1100	2420	Svc.exe	85

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\1.exe
"C:\Users\Admin\AppData\Local\Temp\1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3180
- 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:4196
- 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:2420
- - 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:1100

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/2420-5-0x00007FFFEBF60000-0x00007FFFECA22000-memory.dmp

Filesize
10.8MB

Download
memory/2420-7-0x00007FFFEBF60000-0x00007FFFECA22000-memory.dmp

Filesize
10.8MB

Download
memory/2420-8-0x000000001B760000-0x000000001B7B0000-memory.dmp

Filesize
320KB

Download
memory/2420-9-0x000000001C8C0000-0x000000001C972000-memory.dmp

Filesize
712KB

Download
memory/2420-12-0x000000001C800000-0x000000001C812000-memory.dmp

Filesize
72KB

Download
memory/2420-13-0x000000001C860000-0x000000001C89C000-memory.dmp

Filesize
240KB

Download
memory/2420-14-0x00007FFFEBF60000-0x00007FFFECA22000-memory.dmp

Filesize
10.8MB

Download
memory/3180-0-0x00007FFFEBF63000-0x00007FFFEBF65000-memory.dmp

Filesize
8KB

Download
memory/3180-1-0x0000000000B50000-0x0000000000E74000-memory.dmp

Filesize
3.1MB

Download
memory/3180-2-0x00007FFFEBF60000-0x00007FFFECA22000-memory.dmp

Filesize
10.8MB

Download
memory/3180-6-0x00007FFFEBF60000-0x00007FFFECA22000-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