quasar | 6661ba1349745231bcee0d0f97ad80ed2db94732ab32cb4fa5e969cfa631a695

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 08:27

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General

Target

Client-built1.exe
Size

3.1MB
MD5

bcaf70faf8cef879f13519ff4a94f9ab
SHA1

cdc11c7fd22cacf568ccdd97d00928128e35e974
SHA256

6661ba1349745231bcee0d0f97ad80ed2db94732ab32cb4fa5e969cfa631a695
SHA512

f0d795820773834b6fb19ba92cb0a698e645498f1252594626d88cdf952bc4503d4e4d32f970bad0267b7040af898721e186215184a27ca6a9aa05f829b77214
SSDEEP

49152:nv7I22SsaNYfdPBldt698dBcjHrKJGKGCDiUTHHB72eh2NT:nvE22SsaNYfdPBldt6+dBcjHrKQ

Score

10^/10

quasar system spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SYSTEM

rather-reputation.gl.at.ply.gg:23827

Mutex

6f4b08b2-7091-41aa-a67e-9b869448a0c0

Attributes

encryption_key
17D2A006DF537BB025A18049E5586744E13D89C5
install_name
trey.exe
log_directory
Logs
reconnect_delay
3000
startup_key
SYSTEM
subdirectory
trey

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/4244-1-0x0000000000B70000-0x0000000000E94000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023c5c-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
556	trey.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
3640	schtasks.exe
2340	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4244	Client-built1.exe
Token: SeDebugPrivilege	556	trey.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
556	trey.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
556	trey.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
556	trey.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 2340	4244	Client-built1.exe	82
PID 4244 wrote to memory of 2340	4244	Client-built1.exe	82
PID 4244 wrote to memory of 556	4244	Client-built1.exe	84
PID 4244 wrote to memory of 556	4244	Client-built1.exe	84
PID 556 wrote to memory of 3640	556	trey.exe	85
PID 556 wrote to memory of 3640	556	trey.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\Client-built1.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "SYSTEM" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2340
- C:\Users\Admin\AppData\Roaming\trey\trey.exe
  "C:\Users\Admin\AppData\Roaming\trey\trey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:556
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "SYSTEM" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3640

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\trey\trey.exe

Filesize
3.1MB

MD5
bcaf70faf8cef879f13519ff4a94f9ab

SHA1
cdc11c7fd22cacf568ccdd97d00928128e35e974

SHA256
6661ba1349745231bcee0d0f97ad80ed2db94732ab32cb4fa5e969cfa631a695

SHA512
f0d795820773834b6fb19ba92cb0a698e645498f1252594626d88cdf952bc4503d4e4d32f970bad0267b7040af898721e186215184a27ca6a9aa05f829b77214

Download Submit
memory/556-10-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/556-11-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/556-12-0x000000001BF00000-0x000000001BF50000-memory.dmp

Filesize
320KB

Download
memory/556-13-0x000000001C010000-0x000000001C0C2000-memory.dmp

Filesize
712KB

Download
memory/556-14-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4244-0-0x00007FFBA8E03000-0x00007FFBA8E05000-memory.dmp

Filesize
8KB

Download
memory/4244-1-0x0000000000B70000-0x0000000000E94000-memory.dmp

Filesize
3.1MB

Download
memory/4244-2-0x00007FFBA8E00000-0x00007FFBA98C1000-memory.dmp

Filesize
10.8MB

Download
memory/4244-9-0x00007FFBA8E00000-0x00007FFBA98C1000-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