quasar | e15a03db8ad4475fcc712d10500810aca8f925512b39c5bad6f1c1a20c6f785d

Analysis

max time kernel
107s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-10-2024 16:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ImageLoggerBuilder.exe
Size

3.1MB
MD5

32ee83c0da0f7c355e7600bfe40cfe89
SHA1

9616e83a0cf27f21a561f0d3ea292254b9b685d2
SHA256

e15a03db8ad4475fcc712d10500810aca8f925512b39c5bad6f1c1a20c6f785d
SHA512

e5ddad8f8640ed1b514fd6f9c1817e18290ba1bcc8654f150b31fe817065f99028f79cfeea6e4145a701b38fa21b7f8b3f14c11e4084f3650957e6e424975088
SSDEEP

49152:mvyI22SsaNYfdPBldt698dBcjHbemDmzKKoGd1THHB72eh2NT:mvf22SsaNYfdPBldt6+dBcjHbemU

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

Aynamit-58285.portmap.io:58285

Mutex

7d6c4039-1882-4ac3-8711-9edc060091eb

Attributes

encryption_key
B414A2AEA68C8F212513170411C6C2ACB8A1A963
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1312-1-0x0000000000AB0000-0x0000000000DD4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000023c84-5.dat	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid	Process
1164	Client.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

Processes:

schtasks.exeschtasks.exe

pid	Process
1376	schtasks.exe
220	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ImageLoggerBuilder.exeClient.exe

description	pid	Process
Token: SeDebugPrivilege	1312	ImageLoggerBuilder.exe
Token: SeDebugPrivilege	1164	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid	Process
1164	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

ImageLoggerBuilder.exeClient.exe

description	pid	Process	procid_target
PID 1312 wrote to memory of 1376	1312	ImageLoggerBuilder.exe	87
PID 1312 wrote to memory of 1376	1312	ImageLoggerBuilder.exe	87
PID 1312 wrote to memory of 1164	1312	ImageLoggerBuilder.exe	89
PID 1312 wrote to memory of 1164	1312	ImageLoggerBuilder.exe	89
PID 1164 wrote to memory of 220	1164	Client.exe	90
PID 1164 wrote to memory of 220	1164	Client.exe	90

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\ImageLoggerBuilder.exe
"C:\Users\Admin\AppData\Local\Temp\ImageLoggerBuilder.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1376
- 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 SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:220

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
32ee83c0da0f7c355e7600bfe40cfe89

SHA1
9616e83a0cf27f21a561f0d3ea292254b9b685d2

SHA256
e15a03db8ad4475fcc712d10500810aca8f925512b39c5bad6f1c1a20c6f785d

SHA512
e5ddad8f8640ed1b514fd6f9c1817e18290ba1bcc8654f150b31fe817065f99028f79cfeea6e4145a701b38fa21b7f8b3f14c11e4084f3650957e6e424975088

Download Submit
memory/1164-9-0x00007FFED8C50000-0x00007FFED8D5B000-memory.dmp

Filesize
1.0MB

Download
memory/1164-10-0x000000001DB90000-0x000000001DBE0000-memory.dmp

Filesize
320KB

Download
memory/1164-11-0x000000001DCA0000-0x000000001DD52000-memory.dmp

Filesize
712KB

Download
memory/1164-12-0x00007FFED8C50000-0x00007FFED8D5B000-memory.dmp

Filesize
1.0MB

Download
memory/1312-0-0x00007FFED8C50000-0x00007FFED8D5B000-memory.dmp

Filesize
1.0MB

Download
memory/1312-1-0x0000000000AB0000-0x0000000000DD4000-memory.dmp

Filesize
3.1MB

Download
memory/1312-8-0x00007FFED8C50000-0x00007FFED8D5B000-memory.dmp

Filesize
1.0MB

Download