quasar | 864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-12-2024 12:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe
Size

3.1MB
MD5

7f888b6cbd5062a7558eea61eb9a9ca2
SHA1

2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87
SHA256

864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad
SHA512

7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8
SSDEEP

49152:/v2lL26AaNeWgPhlmVqvMQ7XSKKQSYmzwXoGdVTHHB72eh2NT:/v2L26AaNeWgPhlmVqkQ7XSKKQSq

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

llordiWasHere-55715.portmap.host:55715

Mutex

124c5996-13c0-46a2-804a-191042a109db

Attributes

encryption_key
5F48258CBD7D9014A9443146E8A3D837D1715CAE
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 family
quasar

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2340-1-0x0000000000CD0000-0x0000000000FF4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000018d68-7.dat	family_quasar
behavioral1/memory/1524-8-0x0000000000860000-0x0000000000B84000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1524	Client.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	2340	864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe
Token: SeDebugPrivilege	1524	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1524	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1524	Client.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 1524	2340	864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe	30
PID 2340 wrote to memory of 1524	2340	864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe	30
PID 2340 wrote to memory of 1524	2340	864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe	30

C:\Users\Admin\AppData\Local\Temp\864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe
"C:\Users\Admin\AppData\Local\Temp\864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340
- 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
  PID:1524

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

Filesize
3.1MB

MD5
7f888b6cbd5062a7558eea61eb9a9ca2

SHA1
2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87

SHA256
864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad

SHA512
7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8

Download Submit
memory/1524-9-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/1524-11-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/1524-8-0x0000000000860000-0x0000000000B84000-memory.dmp

Filesize
3.1MB

Download
memory/1524-12-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2340-0-0x000007FEF5983000-0x000007FEF5984000-memory.dmp

Filesize
4KB

Download
memory/2340-1-0x0000000000CD0000-0x0000000000FF4000-memory.dmp

Filesize
3.1MB

Download
memory/2340-2-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2340-10-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download