quasar | 95aaca4f14c31d00d6b5d2b40d0dd13e4e8f47fe6bea49388119527f3700f597

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 15:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

monkey.exe
Size

3.1MB
MD5

9859a252dd5d39d77b4dbdc38d0e12bc
SHA1

dcb2d45e7bcdf20230a397d88badf2f27e0c3b54
SHA256

95aaca4f14c31d00d6b5d2b40d0dd13e4e8f47fe6bea49388119527f3700f597
SHA512

42973931e4dabdbef5a3d63d91641c86360e3422c842b178b1fd512f17963f1f0f25dee87b62183e132a2c7f431dc974718c4453cf53e7f002ebe17671a8bbe9
SSDEEP

49152:/vOI22SsaNYfdPBldt698dBcjHfzRJ6ibR3LoGdrBTHHB72eh2NT:/vj22SsaNYfdPBldt6+dBcjHfzRJ6c

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

255.255.255.0:4782

Mutex

5d8ed293-df10-4841-a52b-8692fbf47f38

Attributes

encryption_key
11B8D109A02D98C9240E47185440CD1BFD88612D
install_name
monkey.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/3464-1-0x0000000000380000-0x00000000006A4000-memory.dmp	family_quasar
behavioral2/files/0x000300000001e5b2-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
4660	monkey.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3464	monkey.exe
Token: SeDebugPrivilege	4660	monkey.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4660	monkey.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4660	monkey.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3464 wrote to memory of 4660	3464	monkey.exe	86
PID 3464 wrote to memory of 4660	3464	monkey.exe	86

C:\Users\Admin\AppData\Local\Temp\monkey.exe
"C:\Users\Admin\AppData\Local\Temp\monkey.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Users\Admin\AppData\Roaming\SubDir\monkey.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\monkey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\monkey.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\monkey.exe

Filesize
3.1MB

MD5
9859a252dd5d39d77b4dbdc38d0e12bc

SHA1
dcb2d45e7bcdf20230a397d88badf2f27e0c3b54

SHA256
95aaca4f14c31d00d6b5d2b40d0dd13e4e8f47fe6bea49388119527f3700f597

SHA512
42973931e4dabdbef5a3d63d91641c86360e3422c842b178b1fd512f17963f1f0f25dee87b62183e132a2c7f431dc974718c4453cf53e7f002ebe17671a8bbe9

Download Submit
memory/3464-0-0x00007FFCB6063000-0x00007FFCB6065000-memory.dmp

Filesize
8KB

Download
memory/3464-1-0x0000000000380000-0x00000000006A4000-memory.dmp

Filesize
3.1MB

Download
memory/3464-2-0x00007FFCB6060000-0x00007FFCB6B21000-memory.dmp

Filesize
10.8MB

Download
memory/3464-10-0x00007FFCB6060000-0x00007FFCB6B21000-memory.dmp

Filesize
10.8MB

Download
memory/4660-9-0x00007FFCB6060000-0x00007FFCB6B21000-memory.dmp

Filesize
10.8MB

Download
memory/4660-11-0x00007FFCB6060000-0x00007FFCB6B21000-memory.dmp

Filesize
10.8MB

Download
memory/4660-12-0x000000001C0B0000-0x000000001C100000-memory.dmp

Filesize
320KB

Download
memory/4660-13-0x000000001C1C0000-0x000000001C272000-memory.dmp

Filesize
712KB

Download
memory/4660-14-0x00007FFCB6060000-0x00007FFCB6B21000-memory.dmp

Filesize
10.8MB

Download