quasar | 947ecae6beac19b2fe2154f68940462655843cd5f36db14c0ab0b57cff623138

Analysis

max time kernel
291s
max time network
296s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2024 16:29

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General

Target

Client-built.exe
Size

348KB
MD5

0b7139d2d35eb6fb4638ec14b469df7e
SHA1

5b3644a8be1e3ef885b5809b857142295ed2a4d1
SHA256

947ecae6beac19b2fe2154f68940462655843cd5f36db14c0ab0b57cff623138
SHA512

84ae5d2017f268a1249ab1346de9ebda1ab41621b790ecd24cc75df95e9d8415720395b022d4f367819eda642b19a42f31bf50b87a4d980237471b6dcb1041c9
SSDEEP

6144:0jEHwNHJsa2gKMRQDbRFunXCpsIqlfoF:Cxpsa8W6uXC3qRO

Score

10^/10

quasar deadly spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Deadly

uk2.localto.net:3955

Mutex

QSR_MUTEX_Kpy5UOokQcRvJFzawH

Attributes

encryption_key
42mkSeUsHVtyogVkUtuz
install_name
$dead-Client.exe
log_directory
$dead-Logs
reconnect_delay
3000
startup_key
Powershell
subdirectory
$dead-deadly2

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/540-1-0x0000000000120000-0x000000000017E000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\$dead-deadly2\$dead-Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

$dead-Client.exe

pid process

452 $dead-Client.exe
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

12 ip-api.com
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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

5424 schtasks.exe
4320 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client-built.exe$dead-Client.exe

description pid process

Token: SeDebugPrivilege 540 Client-built.exe
Token: SeDebugPrivilege 452 $dead-Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

$dead-Client.exe

pid process

452 $dead-Client.exe

pid	process
452	$dead-Client.exe

flow	ioc
12	ip-api.com

pid	process
5424	schtasks.exe
4320	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	540	Client-built.exe
Token: SeDebugPrivilege	452	$dead-Client.exe

pid	process
452	$dead-Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Client-built.exe$dead-Client.exe

description	pid	process	target process
PID 540 wrote to memory of 4320	540	Client-built.exe	schtasks.exe
PID 540 wrote to memory of 4320	540	Client-built.exe	schtasks.exe
PID 540 wrote to memory of 4320	540	Client-built.exe	schtasks.exe
PID 540 wrote to memory of 452	540	Client-built.exe	$dead-Client.exe
PID 540 wrote to memory of 452	540	Client-built.exe	$dead-Client.exe
PID 540 wrote to memory of 452	540	Client-built.exe	$dead-Client.exe
PID 452 wrote to memory of 5424	452	$dead-Client.exe	schtasks.exe
PID 452 wrote to memory of 5424	452	$dead-Client.exe	schtasks.exe
PID 452 wrote to memory of 5424	452	$dead-Client.exe	schtasks.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 WriteProcessMemory
PID:540

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Powershell" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Client-built.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4320

C:\Users\Admin\AppData\Roaming\$dead-deadly2\$dead-Client.exe
"C:\Users\Admin\AppData\Roaming\$dead-deadly2\$dead-Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:452

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Powershell" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\$dead-deadly2\$dead-Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:5424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\$dead-deadly2\$dead-Client.exe

Filesize
348KB

MD5
0b7139d2d35eb6fb4638ec14b469df7e

SHA1
5b3644a8be1e3ef885b5809b857142295ed2a4d1

SHA256
947ecae6beac19b2fe2154f68940462655843cd5f36db14c0ab0b57cff623138

SHA512
84ae5d2017f268a1249ab1346de9ebda1ab41621b790ecd24cc75df95e9d8415720395b022d4f367819eda642b19a42f31bf50b87a4d980237471b6dcb1041c9

Download Submit
memory/452-20-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/452-19-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/452-18-0x0000000006020000-0x000000000602A000-memory.dmp

Filesize
40KB

Download
memory/452-16-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/452-15-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/540-6-0x00000000059A0000-0x00000000059B2000-memory.dmp

Filesize
72KB

Download
memory/540-7-0x0000000005EE0000-0x0000000005F1C000-memory.dmp

Filesize
240KB

Download
memory/540-0-0x000000007500E000-0x000000007500F000-memory.dmp

Filesize
4KB

Download
memory/540-14-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/540-5-0x0000000004C60000-0x0000000004CC6000-memory.dmp

Filesize
408KB

Download
memory/540-4-0x0000000075000000-0x00000000757B0000-memory.dmp

Filesize
7.7MB

Download
memory/540-3-0x0000000004BC0000-0x0000000004C52000-memory.dmp

Filesize
584KB

Download
memory/540-2-0x0000000005170000-0x0000000005714000-memory.dmp

Filesize
5.6MB

Download
memory/540-1-0x0000000000120000-0x000000000017E000-memory.dmp

Filesize
376KB

Download