quasar | 65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27-05-2024 09:38

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General

Target

0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
Size

3.1MB
MD5

0c9d62335c53a76df0bdec0bc243d5b0
SHA1

691c9d535f8942a9489e0baae271463443a5d298
SHA256

65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2
SHA512

4376bfe437defbf0e350b7220c7995a16cf0161881500f0ba7faae371afe5f4aef71858231d8f7b201381ff1c6c06adc132a72db578980019281536112c3b1c8
SSDEEP

49152:SvWI22SsaNYfdPBldt698dBcjHduRJ6KbR3LoGdfTHHB72eh2NT:Sv722SsaNYfdPBldt6+dBcjHduRJ6k

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

26.27.32.75:4782

Mutex

0cfc6260-9d2e-4af5-9d5c-36502e10581d

Attributes

encryption_key
812D564FEDCE5BAF795823ACE48DC125C79FF0F6
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 payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4108-1-0x0000000000FE0000-0x0000000001304000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

4940 Client.exe
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2980 schtasks.exe
3860 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exeClient.exe

description pid process

Token: SeDebugPrivilege 4108 0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
Token: SeDebugPrivilege 4940 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

4940 Client.exe

pid	process
4940	Client.exe

pid	process
2980	schtasks.exe
3860	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4108	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
Token: SeDebugPrivilege	4940	Client.exe

pid	process
4940	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exeClient.exe

description	pid	process	target process
PID 4108 wrote to memory of 3860	4108	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	schtasks.exe
PID 4108 wrote to memory of 3860	4108	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	schtasks.exe
PID 4108 wrote to memory of 4940	4108	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	Client.exe
PID 4108 wrote to memory of 4940	4108	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	Client.exe
PID 4940 wrote to memory of 2980	4940	Client.exe	schtasks.exe
PID 4940 wrote to memory of 2980	4940	Client.exe	schtasks.exe

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\0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4108

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⤵
- Creates scheduled task(s)
PID:3860

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:4940

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⤵
- Creates scheduled task(s)
PID:2980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

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
0c9d62335c53a76df0bdec0bc243d5b0

SHA1
691c9d535f8942a9489e0baae271463443a5d298

SHA256
65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2

SHA512
4376bfe437defbf0e350b7220c7995a16cf0161881500f0ba7faae371afe5f4aef71858231d8f7b201381ff1c6c06adc132a72db578980019281536112c3b1c8

Download Submit
memory/4108-0-0x00007FF8E5BB3000-0x00007FF8E5BB5000-memory.dmp

Filesize
8KB

Download
memory/4108-1-0x0000000000FE0000-0x0000000001304000-memory.dmp

Filesize
3.1MB

Download
memory/4108-2-0x00007FF8E5BB0000-0x00007FF8E6671000-memory.dmp

Filesize
10.8MB

Download
memory/4108-8-0x00007FF8E5BB0000-0x00007FF8E6671000-memory.dmp

Filesize
10.8MB

Download
memory/4940-9-0x00007FF8E5BB0000-0x00007FF8E6671000-memory.dmp

Filesize
10.8MB

Download
memory/4940-10-0x00007FF8E5BB0000-0x00007FF8E6671000-memory.dmp

Filesize
10.8MB

Download
memory/4940-11-0x000000001C6B0000-0x000000001C700000-memory.dmp

Filesize
320KB

Download
memory/4940-12-0x000000001C7C0000-0x000000001C872000-memory.dmp

Filesize
712KB

Download
memory/4940-13-0x00007FF8E5BB0000-0x00007FF8E6671000-memory.dmp

Filesize
10.8MB

Download