quasar | 0e6fc77a72dd0b4c8f8fe7607c92eac7cf5b0d607c9904e09d9fb1b2128a2e51

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-11-2024 08:01

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General

Target

start-main/hbfgjhhesfd.exe
Size

288KB
MD5

2b3a191ee1f6d3b21d03ee54aa40b604
SHA1

8ecae557c2735105cc573d86820e81fcff0139c4
SHA256

f0d45f8340cd203ee98c7765267175576d8017df5166f425f8a7483cb35a91c8
SHA512

31f621fd96bf2964529607ae64a173c4a99f3976a91283a3609edc3799d98f59de80da6266ca10c26e5c8733644f1764aab00c7ba3e4dc5456573b9b20b6a393
SSDEEP

6144:k7zO0LSclT6FOwEP5Kq+SMv0VGb7bDcllbken:alJtTF9zVGkllbkm

Score

10^/10

quasar office discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office

82.117.243.110:5173

Mutex

edH11NGQWIdCwvLx00

Attributes

encryption_key
aGPuRaDerdUDJPrAfXtB
install_name
csrss.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Framework
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral12/memory/2428-1-0x00000000004C0000-0x000000000050E000-memory.dmp	family_quasar

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

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

Processes:

schtasks.exehbfgjhhesfd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hbfgjhhesfd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
4092	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

hbfgjhhesfd.exe

description	pid	Process
Token: SeDebugPrivilege	2428	hbfgjhhesfd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

hbfgjhhesfd.exe

pid	Process
2428	hbfgjhhesfd.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

hbfgjhhesfd.exe

description	pid	Process	procid_target
PID 2428 wrote to memory of 4092	2428	hbfgjhhesfd.exe	87
PID 2428 wrote to memory of 4092	2428	hbfgjhhesfd.exe	87
PID 2428 wrote to memory of 4092	2428	hbfgjhhesfd.exe	87

C:\Users\Admin\AppData\Local\Temp\start-main\hbfgjhhesfd.exe
"C:\Users\Admin\AppData\Local\Temp\start-main\hbfgjhhesfd.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Framework" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\start-main\hbfgjhhesfd.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2428-0-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2428-1-0x00000000004C0000-0x000000000050E000-memory.dmp

Filesize
312KB

Download
memory/2428-2-0x0000000005510000-0x0000000005AB4000-memory.dmp

Filesize
5.6MB

Download
memory/2428-3-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/2428-4-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download
memory/2428-5-0x0000000004F60000-0x0000000004FC6000-memory.dmp

Filesize
408KB

Download
memory/2428-6-0x0000000005480000-0x0000000005492000-memory.dmp

Filesize
72KB

Download
memory/2428-7-0x0000000006180000-0x00000000061BC000-memory.dmp

Filesize
240KB

Download
memory/2428-9-0x00000000064E0000-0x00000000064EA000-memory.dmp

Filesize
40KB

Download
memory/2428-10-0x00000000750DE000-0x00000000750DF000-memory.dmp

Filesize
4KB

Download
memory/2428-11-0x00000000750D0000-0x0000000075880000-memory.dmp

Filesize
7.7MB

Download