quasar | a0b392d3c49dc9b3b763b6ad04984877f6ab7652a09630faa5b7058a19c81a5f

Analysis

max time kernel
142s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
17/05/2024, 04:19

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General

Target

a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe
Size

3.1MB
MD5

a5aa53a0c804e4ca657a4f27cd1c02c0
SHA1

0ee279c8084ef985c4525b5d2f494c28c5795e8e
SHA256

a0b392d3c49dc9b3b763b6ad04984877f6ab7652a09630faa5b7058a19c81a5f
SHA512

cf59cb9797901a7a2cf447d2bb468996728a8c135e40978c545696e076f82b3faeae47681afb05498df856042d253cc16800d1dba57f89594428f2bcbe5326f3
SSDEEP

49152:evkt62XlaSFNWPjljiFa2RoUYIbHRJ6hbR3LoGduKTHHB72eh2NT:ev462XlaSFNWPjljiFXRoUYIbHRJ6D

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.50.244:4782

Mutex

8c0dd4a8-9378-4bb0-a8b0-01c7a7abc4a0

Attributes

encryption_key
25C9945CAA6B7DC1F00936AF44864E2B40484EAE
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/1780-1-0x0000000000BF0000-0x0000000000F14000-memory.dmp	family_quasar
behavioral2/files/0x000800000002324d-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
552	Client.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
4496	schtasks.exe
3452	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1780	a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe
Token: SeDebugPrivilege	552	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
552	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1780 wrote to memory of 4496	1780	a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe	91
PID 1780 wrote to memory of 4496	1780	a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe	91
PID 1780 wrote to memory of 552	1780	a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe	93
PID 1780 wrote to memory of 552	1780	a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe	93
PID 552 wrote to memory of 3452	552	Client.exe	94
PID 552 wrote to memory of 3452	552	Client.exe	94

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\a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\a5aa53a0c804e4ca657a4f27cd1c02c0_NeikiAnalytics.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:4496
- 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:552
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:3452

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3692 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:3168

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

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
a5aa53a0c804e4ca657a4f27cd1c02c0

SHA1
0ee279c8084ef985c4525b5d2f494c28c5795e8e

SHA256
a0b392d3c49dc9b3b763b6ad04984877f6ab7652a09630faa5b7058a19c81a5f

SHA512
cf59cb9797901a7a2cf447d2bb468996728a8c135e40978c545696e076f82b3faeae47681afb05498df856042d253cc16800d1dba57f89594428f2bcbe5326f3

Download Submit
memory/552-10-0x00007FFE8AC00000-0x00007FFE8B6C1000-memory.dmp

Filesize
10.8MB

Download
memory/552-11-0x00007FFE8AC00000-0x00007FFE8B6C1000-memory.dmp

Filesize
10.8MB

Download
memory/552-12-0x000000001B9B0000-0x000000001BA00000-memory.dmp

Filesize
320KB

Download
memory/552-13-0x000000001BAC0000-0x000000001BB72000-memory.dmp

Filesize
712KB

Download
memory/552-14-0x00007FFE8AC00000-0x00007FFE8B6C1000-memory.dmp

Filesize
10.8MB

Download
memory/552-15-0x00007FFE8AC00000-0x00007FFE8B6C1000-memory.dmp

Filesize
10.8MB

Download
memory/1780-0-0x00007FFE8AC03000-0x00007FFE8AC05000-memory.dmp

Filesize
8KB

Download
memory/1780-1-0x0000000000BF0000-0x0000000000F14000-memory.dmp

Filesize
3.1MB

Download
memory/1780-2-0x00007FFE8AC00000-0x00007FFE8B6C1000-memory.dmp

Filesize
10.8MB

Download
memory/1780-9-0x00007FFE8AC00000-0x00007FFE8B6C1000-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