quasar | 2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5

General

Target

2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe
Size

3.1MB
MD5

a8266637e953feb5248135a3a9374666
SHA1

3a0773ff3f442e1ba41def732548142d37d823af
SHA256

2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5
SHA512

cf2e24018a043b295e00b18797e6175ea57246207555caca6255893e8dd7458eae88572bc60cd5af364d962199705f9d60bb6b68709309b40e25ed3697e8e01d
SSDEEP

49152:jvyt62XlaSFNWPjljiFa2RoUYIMcOhyvJo3oGdFTHHB72eh2NTP:jva62XlaSFNWPjljiFXRoUYIWhRc

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/1556-1-0x00000000000E0000-0x0000000000404000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023e26-6.dat	family_quasar

Downloads MZ/PE file 1 IoCs

flow	pid	Process
34	3800	Process not Found

Executes dropped EXE 1 IoCs

pid	Process
4100	Client.exe

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
4060	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
1152	schtasks.exe
2312	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1556	2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe
Token: SeDebugPrivilege	4100	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4100	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 1152	1556	2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe	89
PID 1556 wrote to memory of 1152	1556	2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe	89
PID 1556 wrote to memory of 4100	1556	2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe	91
PID 1556 wrote to memory of 4100	1556	2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe	91
PID 4100 wrote to memory of 2312	4100	Client.exe	92
PID 4100 wrote to memory of 2312	4100	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\2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe
"C:\Users\Admin\AppData\Local\Temp\2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1556
- 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:1152
- 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:4100
- - 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:2312

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY0MzMiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODc1OTU2NTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjA1NDE5ODE2Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4060

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

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Downloads

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

Filesize
3.1MB

MD5
a8266637e953feb5248135a3a9374666

SHA1
3a0773ff3f442e1ba41def732548142d37d823af

SHA256
2b705bed48e179518b89fc0e1bb3d6ba20f6775a0a5f39c9237584c66c7fb7a5

SHA512
cf2e24018a043b295e00b18797e6175ea57246207555caca6255893e8dd7458eae88572bc60cd5af364d962199705f9d60bb6b68709309b40e25ed3697e8e01d

Download Submit
memory/1556-0-0x00007FFCD83C3000-0x00007FFCD83C5000-memory.dmp

Filesize
8KB

Download
memory/1556-1-0x00000000000E0000-0x0000000000404000-memory.dmp

Filesize
3.1MB

Download
memory/1556-2-0x00007FFCD83C0000-0x00007FFCD8E81000-memory.dmp

Filesize
10.8MB

Download
memory/1556-10-0x00007FFCD83C0000-0x00007FFCD8E81000-memory.dmp

Filesize
10.8MB

Download
memory/4100-11-0x00007FFCD83C0000-0x00007FFCD8E81000-memory.dmp

Filesize
10.8MB

Download
memory/4100-9-0x00007FFCD83C0000-0x00007FFCD8E81000-memory.dmp

Filesize
10.8MB

Download
memory/4100-12-0x000000001BD30000-0x000000001BD80000-memory.dmp

Filesize
320KB

Download
memory/4100-13-0x000000001BE40000-0x000000001BEF2000-memory.dmp

Filesize
712KB

Download
memory/4100-14-0x000000001BDC0000-0x000000001BDD2000-memory.dmp

Filesize
72KB

Download
memory/4100-15-0x000000001C540000-0x000000001C57C000-memory.dmp

Filesize
240KB

Download
memory/4100-16-0x00007FFCD83C0000-0x00007FFCD8E81000-memory.dmp

Filesize
10.8MB

Download
memory/4100-17-0x00007FFCD83C0000-0x00007FFCD8E81000-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