xenorat | 2862c2fdbd071dd3308fb352a626da5e5f010c9b5ee9b3b1f6671e78c556dd55

Analysis

max time kernel
141s
max time network
49s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04-07-2024 17:17

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General

Target

QuasarInstaller.exe
Size

491KB
MD5

8def0ef788602675c4d6fc2a72f93944
SHA1

b153631a58aa2b88120412f84493fb3250673e4c
SHA256

2862c2fdbd071dd3308fb352a626da5e5f010c9b5ee9b3b1f6671e78c556dd55
SHA512

e10bbc8b382accb4e946e1058c3bf17305a8df53d3d034dace25b7506d2fb7d56b47b5ed6552c3fc0a32d492f9eccf92d95664591091f7d0c30aac882a3ea45b
SSDEEP

12288:5CQjgAtAHM+vetZxF5EWry8AJGy0vC8JLY8V1/3sRRAw:55ZWs+OZVEWry8AF18JLYgUR1

Score

10^/10

xenorat rat trojan

Malware Config

Extracted

Family

xenorat

127.0.0.1

Mutex

Xeno_rat_nd8912d

Attributes

delay
5000
install_path
appdata
port
4444
startup_name
Quasar

Signatures

XenorRat
XenorRat is a remote access trojan written in C#.
trojan rat xenorat

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	QuasarInstaller.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	Quasar-Installer.exe

Executes dropped EXE 2 IoCs

pid	Process
2536	Quasar-Installer.exe
348	Quasar-Installer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

pid	Process
3116	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 2536	3100	QuasarInstaller.exe	80
PID 3100 wrote to memory of 2536	3100	QuasarInstaller.exe	80
PID 3100 wrote to memory of 2536	3100	QuasarInstaller.exe	80
PID 2536 wrote to memory of 348	2536	Quasar-Installer.exe	82
PID 2536 wrote to memory of 348	2536	Quasar-Installer.exe	82
PID 2536 wrote to memory of 348	2536	Quasar-Installer.exe	82
PID 348 wrote to memory of 3116	348	Quasar-Installer.exe	83
PID 348 wrote to memory of 3116	348	Quasar-Installer.exe	83
PID 348 wrote to memory of 3116	348	Quasar-Installer.exe	83

C:\Users\Admin\AppData\Local\Temp\QuasarInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\QuasarInstaller.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Quasar-Installer.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Quasar-Installer.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2536
- - C:\Users\Admin\AppData\Roaming\XenoManager\Quasar-Installer.exe
    "C:\Users\Admin\AppData\Roaming\XenoManager\Quasar-Installer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:348
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /Create /TN "Quasar" /XML "C:\Users\Admin\AppData\Local\Temp\tmp69E5.tmp" /F
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3116

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Quasar-Installer.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Quasar-Installer.exe

Filesize
57KB

MD5
800a317039e17efeb46d6879adf7c19f

SHA1
110fc941037e9ad167b436db313e4ef3e43e18e6

SHA256
7bae7a85d03bf751b5fee0b6141a314c03023c904be6e28d7a90f1cd3910741c

SHA512
ff01e97fc00310b6b766f82971f455a5b0c88505e8e0b4ac2dbfa8991d38375d72751045ea2c799f871074fd497a205671f0ad87e4f7d22187cf2b3ae21d9ed6

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp69E5.tmp

Filesize
1KB

MD5
c7c6824afe2d715ccc1f958697662e6c

SHA1
e8f3e3216ffca69f7cca1f567787f74966b71d96

SHA256
233f565186c07ecbce427bed376789a60ae8ed601bcac3726fe340c5421e9d23

SHA512
c586982443aedcd9a7dc360ab3f5b034e7dfd74cebef490c173e43e3469ddb25c6c05dff679f0c63fd68ac1bbaf9433a97486262d0fafa0f947dd279f801b317

Download Submit
memory/2536-18-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

Filesize
4KB

Download
memory/2536-19-0x0000000000F00000-0x0000000000F14000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads