quasar | 4dcca1869bcc8aa5695f31f26a57f0fb23ba930b83be0ce25a04ceed6bef62ef

Analysis

max time kernel
146s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-10-2024 23:28

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General

Target

Client-built.exe
Size

3.1MB
MD5

fd50d9f285fcc9fc27f372120e7fecbb
SHA1

2a07c56ff7273e0cf6d83b17a538501d32718763
SHA256

4dcca1869bcc8aa5695f31f26a57f0fb23ba930b83be0ce25a04ceed6bef62ef
SHA512

885338c24fe5ffdfc8d789556bf7534ce7ae793f0c7b13de91e0af1e756dc07371b2b36f96e2aa32d56834cb2b0a883cd5d057e4d57d1a97961dc02693791961
SSDEEP

49152:6vbI22SsaNYfdPBldt698dBcjHvXyN1JAIoGdUgTHHB72eh2NT:6vk22SsaNYfdPBldt6+dBcjHvXyv

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

193.161.193.99:43991

Mutex

0078aebf-454a-4862-8d16-b94bd8465d38

Attributes

encryption_key
3833C35AA932103E67A3C2ED814028BCDAEA8E15
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 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2364-1-0x0000000001280000-0x00000000015A4000-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

Processes:

Client-built.exe

description	pid	Process
Token: SeDebugPrivilege	2364	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

Client-built.exe

pid	Process
2364	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

Client-built.exe

pid	Process
2364	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:2364

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/2364-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000001280000-0x00000000015A4000-memory.dmp

Filesize
3.1MB

Download
memory/2364-2-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2364-3-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2364-4-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download