xenorat | 2862c2fdbd071dd3308fb352a626da5e5f010c9b5ee9b3b1f6671e78c556dd55

Analysis

max time kernel
30s
max time network
13s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 01:05

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General

Target

Quasar-Installer.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	Quasar-Installer.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
4208	Quasar-Installer.exe
3104	Quasar-Installer.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3144	schtasks.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 4208	4824	Quasar-Installer.exe	83
PID 4824 wrote to memory of 4208	4824	Quasar-Installer.exe	83
PID 4824 wrote to memory of 4208	4824	Quasar-Installer.exe	83
PID 4208 wrote to memory of 3104	4208	Quasar-Installer.exe	85
PID 4208 wrote to memory of 3104	4208	Quasar-Installer.exe	85
PID 4208 wrote to memory of 3104	4208	Quasar-Installer.exe	85
PID 3104 wrote to memory of 3144	3104	Quasar-Installer.exe	94
PID 3104 wrote to memory of 3144	3104	Quasar-Installer.exe	94
PID 3104 wrote to memory of 3144	3104	Quasar-Installer.exe	94

C:\Users\Admin\AppData\Local\Temp\Quasar-Installer.exe
"C:\Users\Admin\AppData\Local\Temp\Quasar-Installer.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4824
- 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:4208
- - 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:3104
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /Create /TN "Quasar" /XML "C:\Users\Admin\AppData\Local\Temp\tmp595B.tmp" /F
      4⤵
      Creates scheduled task(s)
      PID:3144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

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\tmp595B.tmp

Filesize
1KB

MD5
c7c6824afe2d715ccc1f958697662e6c

SHA1
e8f3e3216ffca69f7cca1f567787f74966b71d96

SHA256
233f565186c07ecbce427bed376789a60ae8ed601bcac3726fe340c5421e9d23

SHA512
c586982443aedcd9a7dc360ab3f5b034e7dfd74cebef490c173e43e3469ddb25c6c05dff679f0c63fd68ac1bbaf9433a97486262d0fafa0f947dd279f801b317

Download Submit
memory/4208-18-0x000000007467E000-0x000000007467F000-memory.dmp

Filesize
4KB

Download
memory/4208-19-0x00000000004E0000-0x00000000004F4000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads