quasar | e3116bcc355108a729cad155297203e861e82f6f41f7042c6aacfb8669f009b0

Analysis

max time kernel
52s
max time network
62s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27-12-2024 20:34

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General

Target

mango hacks.exe
Size

3.1MB
MD5

ada02d2c2033bb96b3b1d84c647ebb25
SHA1

3d493d4a81501d6da75f961e3be9f1f96782fdfd
SHA256

e3116bcc355108a729cad155297203e861e82f6f41f7042c6aacfb8669f009b0
SHA512

d6377388689ee884d4604794fcbcd660bc45464669d03239ca5558b9d5adf35d61a7d84725901ada1643c1b8947aea669db3d2f862ec5a25919a8d1957b3882c
SSDEEP

49152:bvyI22SsaNYfdPBldt698dBcjHstRJ6NbR3LoGdheDTHHB72eh2NT:bvf22SsaNYfdPBldt6+dBcjHstRJ6f

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.56.1:4782

Mutex

2adfd588-3642-4fab-a4b0-4e5f6d8744eb

Attributes

encryption_key
4F1C49CB2C147CA04D00B7306341D00FE2F78B63
install_name
Client.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 3 IoCs

resource	yara_rule
behavioral1/memory/1604-1-0x00000000003D0000-0x00000000006F4000-memory.dmp	family_quasar
behavioral1/files/0x0038000000017021-6.dat	family_quasar
behavioral1/memory/2832-9-0x0000000001290000-0x00000000015B4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2832	Client.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
2884	schtasks.exe
2708	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	mango hacks.exe
Token: SeDebugPrivilege	2832	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2832	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 2884	1604	mango hacks.exe	30
PID 1604 wrote to memory of 2884	1604	mango hacks.exe	30
PID 1604 wrote to memory of 2884	1604	mango hacks.exe	30
PID 1604 wrote to memory of 2832	1604	mango hacks.exe	32
PID 1604 wrote to memory of 2832	1604	mango hacks.exe	32
PID 1604 wrote to memory of 2832	1604	mango hacks.exe	32
PID 2832 wrote to memory of 2708	2832	Client.exe	33
PID 2832 wrote to memory of 2708	2832	Client.exe	33
PID 2832 wrote to memory of 2708	2832	Client.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\mango hacks.exe
"C:\Users\Admin\AppData\Local\Temp\mango hacks.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2884
- 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:2832
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.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

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

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
ada02d2c2033bb96b3b1d84c647ebb25

SHA1
3d493d4a81501d6da75f961e3be9f1f96782fdfd

SHA256
e3116bcc355108a729cad155297203e861e82f6f41f7042c6aacfb8669f009b0

SHA512
d6377388689ee884d4604794fcbcd660bc45464669d03239ca5558b9d5adf35d61a7d84725901ada1643c1b8947aea669db3d2f862ec5a25919a8d1957b3882c

Download Submit
memory/1604-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/1604-1-0x00000000003D0000-0x00000000006F4000-memory.dmp

Filesize
3.1MB

Download
memory/1604-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/1604-8-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-11-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-10-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-9-0x0000000001290000-0x00000000015B4000-memory.dmp

Filesize
3.1MB

Download
memory/2832-12-0x000007FEF5D20000-0x000007FEF670C000-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