quasar | 5800caf82a36637733bfcbf94ff7d84a94b9aed9219e379f8a7fd0fdb9ba2f65

Analysis

max time kernel
134s
max time network
135s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
15-06-2024 04:34

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General

Target

server.exe
Size

3.1MB
MD5

07dccd8779b74ad4a54626bcd2cb3bef
SHA1

f433850738d4a26367da7596b73003200053362c
SHA256

5800caf82a36637733bfcbf94ff7d84a94b9aed9219e379f8a7fd0fdb9ba2f65
SHA512

4c9c9c9801f62fc8ad811e0e0f46eed808fb2085470f6ba82e1d8319f27459731ef8a77db8cc4be389c452816156bcdcf1a0e0e709b5559b0a072601e9f65cbc
SSDEEP

49152:3vGlL26AaNeWgPhlmVqvMQ7XSKZoRJ64bR3LoGdZtTHHB72eh2NT:3vGL26AaNeWgPhlmVqkQ7XSKZoRJ6SJ

Score

10^/10

quasar @123 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

@123

mother-amanda.gl.at.ply.gg:21734

Mutex

9e934c1b-08a6-4685-bb6a-de27a875f421

Attributes

encryption_key
8E8D64935A72F87FC7C5AD95C61A6C59BC55CDA1
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

Processes:

resource	yara_rule
behavioral1/memory/4904-1-0x0000000000B20000-0x0000000000E44000-memory.dmp	family_quasar

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

System Information Discovery
T1082
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4028 PING.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

server.exe

description pid process

Token: SeDebugPrivilege 4904 server.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

server.exe

pid process

4904 server.exe

pid	process
4028	PING.EXE

description	pid	process
Token: SeDebugPrivilege	4904	server.exe

pid	process
4904	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

server.execmd.exe

description	pid	process	target process
PID 4904 wrote to memory of 1712	4904	server.exe	cmd.exe
PID 4904 wrote to memory of 1712	4904	server.exe	cmd.exe
PID 1712 wrote to memory of 3160	1712	cmd.exe	chcp.com
PID 1712 wrote to memory of 3160	1712	cmd.exe	chcp.com
PID 1712 wrote to memory of 4028	1712	cmd.exe	PING.EXE
PID 1712 wrote to memory of 4028	1712	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4904

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\E8PmdBltaGRX.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:1712

C:\Windows\system32\chcp.com
chcp 65001
3⤵
PID:3160

C:\Windows\system32\PING.EXE
ping -n 10 localhost
3⤵
- Runs ping.exe
PID:4028

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\E8PmdBltaGRX.bat
Filesize
207B

MD5
f0a9db22d5bac84edf157bf28b450225

SHA1
828ecc52aa284dff1db9fb8782555c663b4875e5

SHA256
c3319d32543a7d2bad1a0d855a6e68dbccb30dee5c426c168ddfaae6758a9edc

SHA512
a1d1523a4eff16e85bf76340d77a7a7fb6d81d5b94aa5da63ccbecbc265e1984752f2ee16e7dd52206b2e2dd4e8aec3e17c0ad0bc30af667f709c4df9ec265f3

Download Submit
memory/4904-0-0x00007FF97EED3000-0x00007FF97EED4000-memory.dmp

Filesize
4KB

Download
memory/4904-1-0x0000000000B20000-0x0000000000E44000-memory.dmp

Filesize
3.1MB

Download
memory/4904-2-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download
memory/4904-3-0x000000001BE90000-0x000000001BEE0000-memory.dmp

Filesize
320KB

Download
memory/4904-4-0x000000001BFA0000-0x000000001C052000-memory.dmp

Filesize
712KB

Download
memory/4904-7-0x000000001BF10000-0x000000001BF22000-memory.dmp

Filesize
72KB

Download
memory/4904-8-0x000000001CC90000-0x000000001CCCE000-memory.dmp

Filesize
248KB

Download
memory/4904-9-0x00007FF97EED3000-0x00007FF97EED4000-memory.dmp

Filesize
4KB

Download
memory/4904-14-0x00007FF97EED0000-0x00007FF97F8BC000-memory.dmp

Filesize
9.9MB

Download