quasar | 1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80

General

Target

1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe
Size

502KB
MD5

f5b150d54a0ba2d902974cbfd6249c56
SHA1

92e28c3d9ff4392eed379d816dda6939113830bd
SHA256

1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80
SHA512

57aade72ad0b45fdf1a6fdfa99e0d72165a9d3a77efd48c0fb5976ab605f6a395ab9817ea45f1f63994c772529b6b0c6448fa446d68c9859235ce43bf22cb688
SSDEEP

12288:gTEgdfYv/izUrFL4dywjapf/WI2TI/uqcdj:1Uwwq+ywjapHWbEcdj

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

192.168.31.99:4782

2001:4bc9:1f98:a4e::676:4782

255.255.255.0:4782

fe80::cabf:4cff:fe84:9572%17:4782

Mutex

1f65a787-81b8-4955-95e4-b7751e10cd50

Attributes

encryption_key
A0B82A50BBC49EC084E3E53A9E34DF58BD7050B9
install_name
Neverlose Loader.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Java Updater
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/3064-1-0x00000000011E0000-0x0000000001264000-memory.dmp	family_quasar
behavioral1/files/0x000800000001658c-5.dat	family_quasar
behavioral1/memory/2936-7-0x00000000009B0000-0x0000000000A34000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2936	Neverlose Loader.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
2696	schtasks.exe
2708	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe
Token: SeDebugPrivilege	2936	Neverlose Loader.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2936	Neverlose Loader.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 2696	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	30
PID 3064 wrote to memory of 2696	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	30
PID 3064 wrote to memory of 2696	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	30
PID 3064 wrote to memory of 2936	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	32
PID 3064 wrote to memory of 2936	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	32
PID 3064 wrote to memory of 2936	3064	1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe	32
PID 2936 wrote to memory of 2708	2936	Neverlose Loader.exe	33
PID 2936 wrote to memory of 2708	2936	Neverlose Loader.exe	33
PID 2936 wrote to memory of 2708	2936	Neverlose Loader.exe	33

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\1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe
"C:\Users\Admin\AppData\Local\Temp\1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Java Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2696
- C:\Users\Admin\AppData\Roaming\SubDir\Neverlose Loader.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Neverlose Loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2936
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Java Updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Neverlose Loader.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Neverlose Loader.exe

Filesize
502KB

MD5
f5b150d54a0ba2d902974cbfd6249c56

SHA1
92e28c3d9ff4392eed379d816dda6939113830bd

SHA256
1ba41fb95f728823e54159eb05c34a545ddb09cb2d942b8d7b6de29537204a80

SHA512
57aade72ad0b45fdf1a6fdfa99e0d72165a9d3a77efd48c0fb5976ab605f6a395ab9817ea45f1f63994c772529b6b0c6448fa446d68c9859235ce43bf22cb688

Download Submit
memory/2936-7-0x00000000009B0000-0x0000000000A34000-memory.dmp

Filesize
528KB

Download
memory/2936-8-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2936-10-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2936-11-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/2936-12-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3064-0-0x000007FEF5DB3000-0x000007FEF5DB4000-memory.dmp

Filesize
4KB

Download
memory/3064-1-0x00000000011E0000-0x0000000001264000-memory.dmp

Filesize
528KB

Download
memory/3064-2-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download
memory/3064-9-0x000007FEF5DB0000-0x000007FEF679C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads