quasar | cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2024 10:04

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General

Target

testingfile.exe
Size

3.1MB
MD5

4489c3282400ad9e96ea5ca7c28e6369
SHA1

91a2016778cce0e880636d236efca38cf0a7713d
SHA256

cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77
SHA512

adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0
SSDEEP

49152:fvmI22SsaNYfdPBldt698dBcjH+ixNESEtk/i/LoGdCUTHHB72eh2NT:fvr22SsaNYfdPBldt6+dBcjHTx0D

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

testinghigger-42471.portmap.host:42471

Mutex

7a5f2afa-38ce-4bed-8e42-d1108199a2b3

Attributes

encryption_key
0F8B61E5223AD57FA54A04631691138A0F76FAE4
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
wod2
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/4060-1-0x0000000000040000-0x0000000000364000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023cad-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4296	Client.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
1844	schtasks.exe
1436	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4060	testingfile.exe
Token: SeDebugPrivilege	4296	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4296	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4296	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4296	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4060 wrote to memory of 1844	4060	testingfile.exe	82
PID 4060 wrote to memory of 1844	4060	testingfile.exe	82
PID 4060 wrote to memory of 4296	4060	testingfile.exe	84
PID 4060 wrote to memory of 4296	4060	testingfile.exe	84
PID 4296 wrote to memory of 1436	4296	Client.exe	85
PID 4296 wrote to memory of 1436	4296	Client.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\testingfile.exe
"C:\Users\Admin\AppData\Local\Temp\testingfile.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4060
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "wod2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1844
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.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:4296
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "wod2" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1436

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\SubDir\Client.exe

Filesize
3.1MB

MD5
4489c3282400ad9e96ea5ca7c28e6369

SHA1
91a2016778cce0e880636d236efca38cf0a7713d

SHA256
cc68b1903e22d22e6f0a29bcdf46825d5c57747d8eb3a75672a4d6930f60fe77

SHA512
adaeab8aa666057ff008e86f96ae6b9a36ff2f276fdd49f6663c300357f3dc10f59fac7700bb385aa35887918a830e18bddaa41b3305d913566f58aa428a72b0

Download Submit
memory/4060-0-0x00007FFC04313000-0x00007FFC04315000-memory.dmp

Filesize
8KB

Download
memory/4060-1-0x0000000000040000-0x0000000000364000-memory.dmp

Filesize
3.1MB

Download
memory/4060-2-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4060-9-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4296-10-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4296-11-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

Filesize
10.8MB

Download
memory/4296-12-0x000000001D7F0000-0x000000001D840000-memory.dmp

Filesize
320KB

Download
memory/4296-13-0x000000001D900000-0x000000001D9B2000-memory.dmp

Filesize
712KB

Download
memory/4296-14-0x00007FFC04310000-0x00007FFC04DD1000-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