quasar | 357f5843804874c6728b48ac3c2ce1fd4323a3bfa46c7acbf02eb2b9c2b5795d

Analysis

max time kernel
121s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
30/01/2023, 19:27

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General

Target

52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe
Size

834KB
MD5

ba09f284f6f8acb6400d6d8ccddd0993
SHA1

154fb9974cb4ca8afd2360ca2bf676993f43f2db
SHA256

52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6
SHA512

98bc6aae1b65997c5884f79114baa96f32c1a8e018403038cb3a2f1785d99b8feb892eaf41a1624968dbe63842ae0d98bd66e80de0d3aa17f9dcea01efe224e5
SSDEEP

24576:2qO1lo4HqTEa+XMiZG7BAZJXKrAT35YnW/nuBvOfkMFEGmFz:H0cTEfpi+zXK8T35YiuBvOvhm

Score

10^/10

quasar owl2 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

owl2

dnuocc.com:64594

www.dnuocc.com:64594

dnuocc.com:64588

Mutex

QSR_MUTEX_Xn0YDvYWygBKu6ydwL

Attributes

encryption_key
0LACiVsUHC0ln7Q0Y3SE
install_name
hvi.exe
log_directory
Logs
reconnect_delay
5000
startup_key
htc
subdirectory
cji

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/5000-136-0x0000000000000000-mapping.dmp	family_quasar
behavioral2/memory/5000-137-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4664 set thread context of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4916	5000	WerFault.exe	81

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
5000	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81
PID 4664 wrote to memory of 5000	4664	52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe	81

C:\Users\Admin\AppData\Local\Temp\52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe
"C:\Users\Admin\AppData\Local\Temp\52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Users\Admin\AppData\Local\Temp\52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe
  C:\Users\Admin\AppData\Local\Temp\52d37ef5f414ea192c1512f8740e0bb53e2d85ca04f133468a5267b491cb2ce6.exe
  2⤵
  - Suspicious use of UnmapMainImage
  PID:5000
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5000 -s 12
    3⤵
    - Program crash
    PID:4916

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5000 -ip 5000
1⤵
PID:4984

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/4664-132-0x00000000002B0000-0x0000000000386000-memory.dmp

Filesize
856KB

Download
memory/4664-133-0x00000000072B0000-0x000000000734C000-memory.dmp

Filesize
624KB

Download
memory/4664-134-0x0000000007900000-0x0000000007EA4000-memory.dmp

Filesize
5.6MB

Download
memory/4664-135-0x00000000073F0000-0x0000000007482000-memory.dmp

Filesize
584KB

Download
memory/5000-137-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download