quasar | 0e56d7032757d15ab4f3e0555dec419bd05a0c06ddde4f215eb8330865dcd583

Analysis

max time kernel
63s
max time network
64s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28-12-2024 20:36

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General

Target

Client-built.exe
Size

3.1MB
MD5

1279a35b33d250f9c789300fff0e46fd
SHA1

74d5a52f02168723cf4c3f2605b82e39e4e43a73
SHA256

0e56d7032757d15ab4f3e0555dec419bd05a0c06ddde4f215eb8330865dcd583
SHA512

3fb100a5438e4222477d18896fd2c7be2e5e364e4cecedd05fdf56fc1bf685a49d2aa6f2e7895a2b636e25a1bc87dd1ff1ecb38d60292786eb425cdf67524986
SSDEEP

49152:rvPI22SsaNYfdPBldt698dBcjH9BPNLotBjTHHB72eh2NT:rvA22SsaNYfdPBldt6+dBcjHTPF

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

138.0.54.91:4782

192.168.3.5:4782

Mutex

63563c99-67f3-4d20-8c7f-230c3d970b36

Attributes

encryption_key
E22572FBAE45F5F894074ED475A27E306499B335
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Microsoft Link
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral1/memory/4308-1-0x0000000000930000-0x0000000000C54000-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	4308	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4308	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4308	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:4308

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/4308-0-0x00007FFA102C3000-0x00007FFA102C5000-memory.dmp

Filesize
8KB

Download
memory/4308-1-0x0000000000930000-0x0000000000C54000-memory.dmp

Filesize
3.1MB

Download
memory/4308-2-0x00007FFA102C0000-0x00007FFA10D81000-memory.dmp

Filesize
10.8MB

Download
memory/4308-3-0x000000001C6A0000-0x000000001C6F0000-memory.dmp

Filesize
320KB

Download
memory/4308-4-0x000000001C7B0000-0x000000001C862000-memory.dmp

Filesize
712KB

Download
memory/4308-5-0x00007FFA102C3000-0x00007FFA102C5000-memory.dmp

Filesize
8KB

Download
memory/4308-6-0x00007FFA102C0000-0x00007FFA10D81000-memory.dmp

Filesize
10.8MB

Download