quasar | 65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 22:00

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General

Target
0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
Size 3.1MB
Sample240528-1wp6qsfc35
SHA256 65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2
MD5 0c9d62335c53a76df0bdec0bc243d5b0
SHA1 691c9d535f8942a9489e0baae271463443a5d298
SHA512 4376bfe437defbf0e350b7220c7995a16cf0161881500f0ba7faae371afe5f4aef71858231d8f7b201381ff1c6c06adc132a72db578980019281536112c3b1c8
SSDEEP 49152:SvWI22SsaNYfdPBldt698dBcjHduRJ6KbR3LoGdfTHHB72eh2NT:Sv722SsaNYfdPBldt6+dBcjHduRJ6k
MD5 SHA1 SHA512 SSDEEP

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

resource	yara_rule
behavioral2/memory/892-1-0x0000000000EA0000-0x00000000011C4000-memory.dmp	family_quasar
behavioral2/files/0x00080000000232fb-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
400	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

pid	Process
3704	schtasks.exe
4360	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	892	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe
Token: SeDebugPrivilege	400	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
400	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 4360	892	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	93
PID 892 wrote to memory of 4360	892	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	93
PID 892 wrote to memory of 400	892	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	95
PID 892 wrote to memory of 400	892	0c9d62335c53a76df0bdec0bc243d5b0_NeikiAnalytics.exe	95
PID 400 wrote to memory of 3704	400	Client.exe	98
PID 400 wrote to memory of 3704	400	Client.exe	98

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:892
- 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:4360
- 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:400
- - 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:3704

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4088,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
1⤵
PID:5096

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

Client.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
Size 3.1MB
SHA256 65bd56cfb876a9f4399e311f253ed83d45f7fed896eeba9f9c2dc7b6eb26d3f2
MD5 0c9d62335c53a76df0bdec0bc243d5b0
SHA1 691c9d535f8942a9489e0baae271463443a5d298
SHA512 4376bfe437defbf0e350b7220c7995a16cf0161881500f0ba7faae371afe5f4aef71858231d8f7b201381ff1c6c06adc132a72db578980019281536112c3b1c8
SSDEEP 49152:SvWI22SsaNYfdPBldt698dBcjHduRJ6KbR3LoGdfTHHB72eh2NT:Sv722SsaNYfdPBldt6+dBcjHduRJ6k
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/400-9-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/400-10-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/400-11-0x00000000031B0000-0x0000000003200000-memory.dmp

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memory/400-12-0x000000001C400000-0x000000001C4B2000-memory.dmp

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memory/400-13-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/892-0-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

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memory/892-1-0x0000000000EA0000-0x00000000011C4000-memory.dmp

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memory/892-2-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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memory/892-8-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads