quasar | 714883f91f8805729288aaf7c37332f592842f8baeafce317e6347c13f08c73d | Triage

Analysis

max time kernel
98s
max time network
140s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
30/12/2024, 04:20

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General

Target

Seron.exe
Size

6.9MB
MD5

b40ee427a56535874d543a337e57458f
SHA1

f0dcc9dcc9282ca810674ca530b09092450a709a
SHA256

714883f91f8805729288aaf7c37332f592842f8baeafce317e6347c13f08c73d
SHA512

fa70ca6f86e89225167960fce0f69701cf1726961cdeee07e5f2898827c861c6970b8918ecc9e2b6cd7ec9506f30a5d317bd66fda1c926d6aaa6c726e3a11ff0
SSDEEP

49152:PP65UeDqU9EUiujYHr4sYNQHiQcIJmeYwTeX5UHq1SY573OR5xiE3:PPBeOU9EUiujYHrFYNQCQxJIeHq1Sbx

Score

10^/10

quasar spyware trojan

Malware Config

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral3/memory/732-1-0x00000000001D0000-0x00000000008BC000-memory.dmp	family_quasar
behavioral3/files/0x0028000000046157-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2764	iLu7aNjJH3LfV0ck.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

pid	Process
3996	schtasks.exe
4728	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	732	Seron.exe
Token: SeDebugPrivilege	2764	iLu7aNjJH3LfV0ck.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	iLu7aNjJH3LfV0ck.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 732 wrote to memory of 3996	732	Seron.exe	84
PID 732 wrote to memory of 3996	732	Seron.exe	84
PID 732 wrote to memory of 2764	732	Seron.exe	86
PID 732 wrote to memory of 2764	732	Seron.exe	86
PID 2764 wrote to memory of 4728	2764	iLu7aNjJH3LfV0ck.exe	87
PID 2764 wrote to memory of 4728	2764	iLu7aNjJH3LfV0ck.exe	87

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\Seron.exe
"C:\Users\Admin\AppData\Local\Temp\Seron.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:732
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "iLu7aNjJH3LfV0ck" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\iLu7aNjJH3LfV0ck.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3996
- C:\Users\Admin\AppData\Roaming\SubDir\iLu7aNjJH3LfV0ck.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\iLu7aNjJH3LfV0ck.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "iLu7aNjJH3LfV0ck" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\iLu7aNjJH3LfV0ck.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scheduled Task

Persistence

Scheduled Task/Job

Scheduled Task

Privilege Escalation

Scheduled Task/Job

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\iLu7aNjJH3LfV0ck.exe

Filesize
6.9MB

MD5
b40ee427a56535874d543a337e57458f

SHA1
f0dcc9dcc9282ca810674ca530b09092450a709a

SHA256
714883f91f8805729288aaf7c37332f592842f8baeafce317e6347c13f08c73d

SHA512
fa70ca6f86e89225167960fce0f69701cf1726961cdeee07e5f2898827c861c6970b8918ecc9e2b6cd7ec9506f30a5d317bd66fda1c926d6aaa6c726e3a11ff0

Download Submit
memory/732-8-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/732-1-0x00000000001D0000-0x00000000008BC000-memory.dmp

Filesize
6.9MB

Download
memory/732-2-0x0000000002900000-0x0000000002924000-memory.dmp

Filesize
144KB

Download
memory/732-3-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/732-4-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/732-0-0x00007FFC58B23000-0x00007FFC58B25000-memory.dmp

Filesize
8KB

Download
memory/2764-9-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/2764-7-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/2764-10-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/2764-11-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download
memory/2764-12-0x000000001BD80000-0x000000001BDD0000-memory.dmp

Filesize
320KB

Download
memory/2764-13-0x000000001D030000-0x000000001D0E2000-memory.dmp

Filesize
712KB

Download
memory/2764-16-0x000000001BE20000-0x000000001BE32000-memory.dmp

Filesize
72KB

Download
memory/2764-17-0x000000001CFB0000-0x000000001CFEC000-memory.dmp

Filesize
240KB

Download
memory/2764-18-0x00007FFC58B20000-0x00007FFC595E2000-memory.dmp

Filesize
10.8MB

Download