quasar | a725bb8800499239e18eb3973b4c4371214e8da4efb12108ac42957a3819572b

General

Target

1914a2c8d1589d346dec86208bbbee37.exe
Size

502KB
MD5

1914a2c8d1589d346dec86208bbbee37
SHA1

c9f854cb866fc0dfa54ad4438fb1e3479a9a384e
SHA256

a725bb8800499239e18eb3973b4c4371214e8da4efb12108ac42957a3819572b
SHA512

fb7c411b9aa69deb8ac2660846a555e3bc2481dea13b858f1aa214a67160f02eb205dd08e84c6867c06deddca00ca562c938e2f667e05faac67adfcd9385799c

Score

10^/10

quasar test1 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

test1

C2

166.62.33.218:6624

Mutex

b2e23ea3-acf2-4226-ae2a-ae57e85e6e82

Attributes

encryption_key
C8BFD012DB4B42D492F03E53D34F6E70BFC0E813
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar Payload 2 IoCs

Processes:

resource	yara_rule
C:\Program Files\SubDir\Client.exe	family_quasar
C:\Program Files\SubDir\Client.exe	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

1756 Client.exe

pid	process
1756	Client.exe

Drops file in Program Files directory 2 IoCs

Processes:

1914a2c8d1589d346dec86208bbbee37.exe

description	ioc	process
File opened for modification	C:\Program Files\SubDir\Client.exe	1914a2c8d1589d346dec86208bbbee37.exe
File created	C:\Program Files\SubDir\Client.exe	1914a2c8d1589d346dec86208bbbee37.exe

Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1872 schtasks.exe
1640 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

1914a2c8d1589d346dec86208bbbee37.exeClient.exe

description pid process

Token: SeDebugPrivilege 1096 1914a2c8d1589d346dec86208bbbee37.exe
Token: SeDebugPrivilege 1756 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

1756 Client.exe

pid	process
1872	schtasks.exe
1640	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1096	1914a2c8d1589d346dec86208bbbee37.exe
Token: SeDebugPrivilege	1756	Client.exe

pid	process
1756	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

1914a2c8d1589d346dec86208bbbee37.exeClient.exe

description	pid	process	target process
PID 1096 wrote to memory of 1872	1096	1914a2c8d1589d346dec86208bbbee37.exe	schtasks.exe
PID 1096 wrote to memory of 1872	1096	1914a2c8d1589d346dec86208bbbee37.exe	schtasks.exe
PID 1096 wrote to memory of 1872	1096	1914a2c8d1589d346dec86208bbbee37.exe	schtasks.exe
PID 1096 wrote to memory of 1756	1096	1914a2c8d1589d346dec86208bbbee37.exe	Client.exe
PID 1096 wrote to memory of 1756	1096	1914a2c8d1589d346dec86208bbbee37.exe	Client.exe
PID 1096 wrote to memory of 1756	1096	1914a2c8d1589d346dec86208bbbee37.exe	Client.exe
PID 1756 wrote to memory of 1640	1756	Client.exe	schtasks.exe
PID 1756 wrote to memory of 1640	1756	Client.exe	schtasks.exe
PID 1756 wrote to memory of 1640	1756	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\1914a2c8d1589d346dec86208bbbee37.exe
"C:\Users\Admin\AppData\Local\Temp\1914a2c8d1589d346dec86208bbbee37.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\1914a2c8d1589d346dec86208bbbee37.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1872

C:\Program Files\SubDir\Client.exe
"C:\Program Files\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1640

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files\SubDir\Client.exe
MD5
1914a2c8d1589d346dec86208bbbee37

SHA1
c9f854cb866fc0dfa54ad4438fb1e3479a9a384e

SHA256
a725bb8800499239e18eb3973b4c4371214e8da4efb12108ac42957a3819572b

SHA512
fb7c411b9aa69deb8ac2660846a555e3bc2481dea13b858f1aa214a67160f02eb205dd08e84c6867c06deddca00ca562c938e2f667e05faac67adfcd9385799c

Download Submit
C:\Program Files\SubDir\Client.exe
MD5
1914a2c8d1589d346dec86208bbbee37

SHA1
c9f854cb866fc0dfa54ad4438fb1e3479a9a384e

SHA256
a725bb8800499239e18eb3973b4c4371214e8da4efb12108ac42957a3819572b

SHA512
fb7c411b9aa69deb8ac2660846a555e3bc2481dea13b858f1aa214a67160f02eb205dd08e84c6867c06deddca00ca562c938e2f667e05faac67adfcd9385799c

Download Submit
memory/1096-59-0x0000000001070000-0x0000000001071000-memory.dmp

Filesize
4KB

Download
memory/1096-61-0x000000001AFB0000-0x000000001AFB2000-memory.dmp

Filesize
8KB

Download
memory/1640-69-0x0000000000000000-mapping.dmp

Download
memory/1756-63-0x0000000000000000-mapping.dmp

Download
memory/1756-66-0x0000000001340000-0x0000000001341000-memory.dmp

Filesize
4KB

Download
memory/1756-68-0x000000001B080000-0x000000001B082000-memory.dmp

Filesize
8KB

Download
memory/1872-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads