quasar | fca48c82c0fd6ce3126b3d0fa2e8ded4e7d207d9a58621033a2f61b2cda19df9

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19-11-2024 04:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
Size

3.7MB
MD5

2d9086d8db2b68bfe0eda3def565e494
SHA1

f711ddb1a4bc16e0f0d41ab70970f31d4a07d807
SHA256

315ca1a6189eeb82b97ca0948c23c47b32c9a67d5a96f3a5e2c7d0f481c3ec03
SHA512

aa341dbf61a8a21d913fc1721f840a762cbc191ceaef9af3ec5b7bfaf41ca5b4e9f17ec5750cc9c07c1777dfa4eadfb80f6b22b1d4238eca2eeb846bc7ea99f1
SSDEEP

98304:v97mt1p+v/vg6wRPGAzQIC5ws7Er4dRozxGEgi2Nx+B7RL:5C1p+vg6wRP9C5wsBJNx+7

Score

10^/10

quasar jekwu discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

JEKWU

Zyg.ydns.eu:5829

Opy.ydns.eu:5829

Mutex

9c58b2ba-07eb-415a-b48b-21bbb68d32285e

Attributes

encryption_key
C5B555A83D127A9553D4FB1FCECB35CE8E91A447
install_name
outlooks.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Outlooks
subdirectory
WindowsUpdates

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2496-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
3588	outlooks.exe
4352	outlooks.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3752 set thread context of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3588 set thread context of 4352	3588	outlooks.exe	106

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outlooks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outlooks.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

T1053.005

pid	Process
3536	schtasks.exe
4100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
Token: SeDebugPrivilege	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
Token: SeDebugPrivilege	4352	outlooks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4352	outlooks.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3752 wrote to memory of 4696	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	98
PID 3752 wrote to memory of 4696	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	98
PID 3752 wrote to memory of 4696	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	98
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 3752 wrote to memory of 2496	3752	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	99
PID 2496 wrote to memory of 3536	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	100
PID 2496 wrote to memory of 3536	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	100
PID 2496 wrote to memory of 3536	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	100
PID 2496 wrote to memory of 3588	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	102
PID 2496 wrote to memory of 3588	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	102
PID 2496 wrote to memory of 3588	2496	QUOTE - PO #55037992661010_pdf _______________________________________________________.exe	102
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 3588 wrote to memory of 4352	3588	outlooks.exe	106
PID 4352 wrote to memory of 4100	4352	outlooks.exe	107
PID 4352 wrote to memory of 4100	4352	outlooks.exe	107
PID 4352 wrote to memory of 4100	4352	outlooks.exe	107

C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
  "C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe"
  2⤵
  PID:4696
- C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe
  "C:\Users\Admin\AppData\Local\Temp\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3536
- - C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
    "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3588
  - - C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
      "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4352
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:4100

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\QUOTE - PO #55037992661010_pdf _______________________________________________________.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe

Filesize
3.7MB

MD5
2d9086d8db2b68bfe0eda3def565e494

SHA1
f711ddb1a4bc16e0f0d41ab70970f31d4a07d807

SHA256
315ca1a6189eeb82b97ca0948c23c47b32c9a67d5a96f3a5e2c7d0f481c3ec03

SHA512
aa341dbf61a8a21d913fc1721f840a762cbc191ceaef9af3ec5b7bfaf41ca5b4e9f17ec5750cc9c07c1777dfa4eadfb80f6b22b1d4238eca2eeb846bc7ea99f1

Download Submit
memory/2496-22-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2496-16-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2496-14-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/2496-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/3588-30-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3588-26-0x0000000005610000-0x0000000005622000-memory.dmp

Filesize
72KB

Download
memory/3588-25-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3588-24-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3588-23-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3752-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/3752-3-0x00000000051F0000-0x0000000005282000-memory.dmp

Filesize
584KB

Download
memory/3752-4-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/3752-1-0x0000000000440000-0x00000000007F4000-memory.dmp

Filesize
3.7MB

Download
memory/3752-2-0x00000000056C0000-0x0000000005C64000-memory.dmp

Filesize
5.6MB

Download
memory/3752-15-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3752-10-0x0000000008920000-0x0000000008C88000-memory.dmp

Filesize
3.4MB

Download
memory/3752-5-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3752-9-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3752-8-0x0000000005330000-0x0000000005342000-memory.dmp

Filesize
72KB

Download
memory/3752-7-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/3752-6-0x0000000006880000-0x000000000691C000-memory.dmp

Filesize
624KB

Download
memory/4352-33-0x0000000006C10000-0x0000000006CC2000-memory.dmp

Filesize
712KB

Download
memory/4352-32-0x00000000069A0000-0x00000000069F0000-memory.dmp

Filesize
320KB

Download
memory/4352-31-0x0000000006E00000-0x0000000007418000-memory.dmp

Filesize
6.1MB

Download