quasar | 544152f92e0a8802c3b9239d713fdcfab852d86635a018a09c3f23a89850fdc8

Analysis

max time kernel
134s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 22:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Client-built.exe
Size

3.1MB
MD5

0f36e81c4c276b154458f7d2a09f5b10
SHA1

3093c8cf4822174621d6f84f6aa3f5a14de3ca7d
SHA256

544152f92e0a8802c3b9239d713fdcfab852d86635a018a09c3f23a89850fdc8
SHA512

f92dd2e1e90ab79eb7559d5ac5b07172d5a369047d17e505085463aeadb1b32a5a79d810c3e8c8baecc67cf53d2b9c74d2c78ce7ef27f556f3d4b3a04ec4c002
SSDEEP

49152:fvXlL26AaNeWgPhlmVqvMQ7XSKMrARoGddYnTHHB72eh2NT:fvVL26AaNeWgPhlmVqkQ7XSKMrqW

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

football-jumping.gl.at.ply.gg:10230

Mutex

1ebb2be2-2e75-4e5f-a17a-94f1122ac527

Attributes

encryption_key
AD7F465AC5FC4664CDCEA5C89989197BE33BEF08
install_name
talktuah.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 family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/980-1-0x0000000000EA0000-0x00000000011C4000-memory.dmp	family_quasar
behavioral2/files/0x000b000000023b93-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2976	talktuah.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\SubDir\talktuah.exe	Client-built.exe
File opened for modification	C:\Windows\system32\SubDir	Client-built.exe
File opened for modification	C:\Windows\system32\SubDir\talktuah.exe	talktuah.exe
File opened for modification	C:\Windows\system32\SubDir	talktuah.exe
File created	C:\Windows\system32\SubDir\talktuah.exe	Client-built.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	980	Client-built.exe
Token: SeDebugPrivilege	2976	talktuah.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2976	talktuah.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2976	talktuah.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 980 wrote to memory of 2976	980	Client-built.exe	83
PID 980 wrote to memory of 2976	980	Client-built.exe	83

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:980
- C:\Windows\system32\SubDir\talktuah.exe
  "C:\Windows\system32\SubDir\talktuah.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\System32\SubDir\talktuah.exe

Filesize
3.1MB

MD5
0f36e81c4c276b154458f7d2a09f5b10

SHA1
3093c8cf4822174621d6f84f6aa3f5a14de3ca7d

SHA256
544152f92e0a8802c3b9239d713fdcfab852d86635a018a09c3f23a89850fdc8

SHA512
f92dd2e1e90ab79eb7559d5ac5b07172d5a369047d17e505085463aeadb1b32a5a79d810c3e8c8baecc67cf53d2b9c74d2c78ce7ef27f556f3d4b3a04ec4c002

Download Submit
memory/980-0-0x00007FFD2F563000-0x00007FFD2F565000-memory.dmp

Filesize
8KB

Download
memory/980-1-0x0000000000EA0000-0x00000000011C4000-memory.dmp

Filesize
3.1MB

Download
memory/980-2-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/980-10-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/2976-9-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/2976-11-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download
memory/2976-12-0x000000001C120000-0x000000001C170000-memory.dmp

Filesize
320KB

Download
memory/2976-13-0x000000001C230000-0x000000001C2E2000-memory.dmp

Filesize
712KB

Download
memory/2976-14-0x00007FFD2F560000-0x00007FFD30021000-memory.dmp

Filesize
10.8MB

Download