quasar | aac3318a190c7dc53512c3b492cd1cd6849b5095fb1f112ba296f9c079194340

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
12-12-2023 17:40

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General

Target

Client-built.exe
Size

3.1MB
MD5

34b6298d9defd63572face0b98890878
SHA1

805169e5782b01b2681eb43de1900063fe06e590
SHA256

aac3318a190c7dc53512c3b492cd1cd6849b5095fb1f112ba296f9c079194340
SHA512

4aeed4a6c14f1ecc739eb70512f435f1c4ee9c9e1de936c6e6817e9c5281aec486c35eb71ad70d68b03a4c8e813706395c80250c5e4880e9dacba15065a9dd79
SSDEEP

49152:uvbI22SsaNYfdPBldt698dBcjHUQxNESEpk/iKLoGdfTHHB72eh2NT:uvk22SsaNYfdPBldt6+dBcjH/xg0

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

91.92.242.148:4782

Mutex

19d192fd-6b6a-462a-816d-c6a2102fb462

Attributes

encryption_key
5E1B833088E17261392F4E2B5745DF67141AEEA1
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 1 IoCs

resource	yara_rule
behavioral1/memory/2376-0-0x0000000000920000-0x0000000000C44000-memory.dmp	family_quasar

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2376	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2376	Client-built.exe

C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2376

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

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Downloads

memory/2376-0-0x0000000000920000-0x0000000000C44000-memory.dmp

Filesize
3.1MB

Download
memory/2376-1-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2376-2-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download
memory/2376-3-0x000007FEF55F0000-0x000007FEF5FDC000-memory.dmp

Filesize
9.9MB

Download
memory/2376-4-0x000000001B120000-0x000000001B1A0000-memory.dmp

Filesize
512KB

Download