quasar | 04819d6129cf70696bb6c402127ea66208dbf2d6996ab9faca205b0ecfe33ca7

Analysis

max time kernel
139s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 17:10

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General

Target

B.exe
Size

348KB
MD5

a7062afc04eb9faba65626cc931c8a02
SHA1

6e9e65253cb693a786b43ae863c8294e09af189b
SHA256

04819d6129cf70696bb6c402127ea66208dbf2d6996ab9faca205b0ecfe33ca7
SHA512

17135b9f02f8cc5fe281c77ed618461cce97acf9aa6aa9741ed0e9bee61e01343830d86c498892855e7000c93d1997a8ebc3f62cbb655ba79e672344587b5b36
SSDEEP

6144:wmqQ4i1FFiEKkWAOrEdbJpjYYTLQn6LK2EM8O:Pplikm+UYPQn6LKnM8O

Score

10^/10

quasar test discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Test

4.tcp.eu.ngrok.io:8080

4.tcp.eu.ngrok.io:16210

Mutex

QSR_MUTEX_Nf297179RoX9PEGnGN

Attributes

encryption_key
6GgXmwACZXvigXZxSjrr
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 3 IoCs

resource	yara_rule
behavioral1/memory/2224-1-0x0000000000EF0000-0x0000000000F4E000-memory.dmp	family_quasar
behavioral1/files/0x00300000000173e4-4.dat	family_quasar
behavioral1/memory/2772-9-0x0000000000110000-0x000000000016E000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2772	Client.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	B.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	4.tcp.eu.ngrok.io
10	4.tcp.eu.ngrok.io

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
2	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	B.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	B.exe
Token: SeDebugPrivilege	2772	Client.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2772	2224	B.exe	31
PID 2224 wrote to memory of 2772	2224	B.exe	31
PID 2224 wrote to memory of 2772	2224	B.exe	31
PID 2224 wrote to memory of 2772	2224	B.exe	31

C:\Users\Admin\AppData\Local\Temp\B.exe
"C:\Users\Admin\AppData\Local\Temp\B.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
348KB

MD5
a7062afc04eb9faba65626cc931c8a02

SHA1
6e9e65253cb693a786b43ae863c8294e09af189b

SHA256
04819d6129cf70696bb6c402127ea66208dbf2d6996ab9faca205b0ecfe33ca7

SHA512
17135b9f02f8cc5fe281c77ed618461cce97acf9aa6aa9741ed0e9bee61e01343830d86c498892855e7000c93d1997a8ebc3f62cbb655ba79e672344587b5b36

Download Submit
memory/2224-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/2224-1-0x0000000000EF0000-0x0000000000F4E000-memory.dmp

Filesize
376KB

Download
memory/2224-2-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-12-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2772-9-0x0000000000110000-0x000000000016E000-memory.dmp

Filesize
376KB

Download
memory/2772-10-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2772-11-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download
memory/2772-13-0x0000000074BE0000-0x00000000752CE000-memory.dmp

Filesize
6.9MB

Download