quasar | 0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281

General

Target

0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe
Size

3.1MB
MD5

766e053d13e4f6750e8f694efb00fad0
SHA1

2a0e1ca7711795dfe50231d03ab7d0349014df5e
SHA256

0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281
SHA512

3de1970fc083d404a28827f25e0ff4f096d6b75a2c2367bff0476857f5e217da3f6c40f531c2b835b31233bde53bc51086c6784985294e97ce21523bbef2bd7f
SSDEEP

49152:jvyt62XlaSFNWPjljiFa2RoUYIMcOhyvJo3oGdFTHHB72eh2NT:jva62XlaSFNWPjljiFXRoUYIWhR

Score

10^/10

quasar githubyt discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

githubyt

C2

87.228.57.81:4782

Mutex

cf3988ab-2fd9-4544-a16f-9faa71eb5bac

Attributes

encryption_key
19A0FAF8459F69650B5965C225752D425C429EEC
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
svchoost.exe
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2208-1-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral2/files/0x000f000000023d3a-6.dat	family_quasar

Downloads MZ/PE file 1 IoCs

flow	pid	Process
42	3660	Process not Found

Executes dropped EXE 1 IoCs

pid	Process
2924	Client.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
14	api.ipify.org
15	api.ipify.org

System Location Discovery: System Language Discovery 1 TTPs 1 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	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
588	MicrosoftEdgeUpdate.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4472	schtasks.exe
5044	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2208	0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe
Token: SeDebugPrivilege	2924	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2924	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 4472	2208	0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe	89
PID 2208 wrote to memory of 4472	2208	0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe	89
PID 2208 wrote to memory of 2924	2208	0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe	91
PID 2208 wrote to memory of 2924	2208	0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe	91
PID 2924 wrote to memory of 5044	2924	Client.exe	92
PID 2924 wrote to memory of 5044	2924	Client.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe
"C:\Users\Admin\AppData\Local\Temp\0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281N.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "svchoost.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4472
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2924
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "svchoost.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5044

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4NjAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODIxNjMwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjY2MzI2MDg2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
3.1MB

MD5
766e053d13e4f6750e8f694efb00fad0

SHA1
2a0e1ca7711795dfe50231d03ab7d0349014df5e

SHA256
0502a8da4a9f46a7375766b83d181aa9f38e9969b10801f80736a3598410a281

SHA512
3de1970fc083d404a28827f25e0ff4f096d6b75a2c2367bff0476857f5e217da3f6c40f531c2b835b31233bde53bc51086c6784985294e97ce21523bbef2bd7f

Download Submit
memory/2208-0-0x00007FFB3DB63000-0x00007FFB3DB65000-memory.dmp

Filesize
8KB

Download
memory/2208-1-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2208-2-0x00007FFB3DB60000-0x00007FFB3E621000-memory.dmp

Filesize
10.8MB

Download
memory/2208-10-0x00007FFB3DB60000-0x00007FFB3E621000-memory.dmp

Filesize
10.8MB

Download
memory/2924-9-0x00007FFB3DB60000-0x00007FFB3E621000-memory.dmp

Filesize
10.8MB

Download
memory/2924-11-0x00007FFB3DB60000-0x00007FFB3E621000-memory.dmp

Filesize
10.8MB

Download
memory/2924-12-0x000000001B450000-0x000000001B4A0000-memory.dmp

Filesize
320KB

Download
memory/2924-13-0x000000001BB70000-0x000000001BC22000-memory.dmp

Filesize
712KB

Download
memory/2924-14-0x00007FFB3DB60000-0x00007FFB3E621000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads