quasar | 19f9fa50764180cf01bfc92808e5e8160bf22323db165c0ee050554cb9a924ad

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 02:59

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General

Target

fsefsef.exe
Size

3.1MB
MD5

e4ad5555b9cd2355a5cd5bbca1756bad
SHA1

3ac563aebba67b1a5e3aa2b5d2467d229ab8d77c
SHA256

19f9fa50764180cf01bfc92808e5e8160bf22323db165c0ee050554cb9a924ad
SHA512

fe5812b1d4f52c7136e746c87549c0883f9a0a7e825f9874821b7d1141c44fa250c07bd90fd83ae524795f94266e316f51839f48bd84b4681c9e8042242d3405
SSDEEP

49152:1sOV92Tra60tFP+lRmdpuEobaHWQDiEQs0kCxSdoGBOFTHHB72eh2NT:1s+92Tra60tFP+lRmdcEobaHWQDAa

Score

10^/10

quasar wormburry spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

WormBurry

147.185.221.20:18563

Mutex

e454dd1d-96cf-4940-9da9-a8513930c74c

Attributes

encryption_key
D2C9325B8D20EE149F861F76736A565385914D8A
install_name
GithubStart.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Github.git
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/2788-0-0x0000000000AB0000-0x0000000000DD4000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023413-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3136	GithubStart.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
4092	schtasks.exe
1232	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	fsefsef.exe
Token: SeDebugPrivilege	3136	GithubStart.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3136	GithubStart.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 1232	2788	fsefsef.exe	81
PID 2788 wrote to memory of 1232	2788	fsefsef.exe	81
PID 2788 wrote to memory of 3136	2788	fsefsef.exe	83
PID 2788 wrote to memory of 3136	2788	fsefsef.exe	83
PID 3136 wrote to memory of 4092	3136	GithubStart.exe	84
PID 3136 wrote to memory of 4092	3136	GithubStart.exe	84

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\fsefsef.exe
"C:\Users\Admin\AppData\Local\Temp\fsefsef.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Github.git" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GithubStart.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1232
- C:\Users\Admin\AppData\Roaming\SubDir\GithubStart.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\GithubStart.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3136
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Github.git" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GithubStart.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4092

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\GithubStart.exe

Filesize
3.1MB

MD5
e4ad5555b9cd2355a5cd5bbca1756bad

SHA1
3ac563aebba67b1a5e3aa2b5d2467d229ab8d77c

SHA256
19f9fa50764180cf01bfc92808e5e8160bf22323db165c0ee050554cb9a924ad

SHA512
fe5812b1d4f52c7136e746c87549c0883f9a0a7e825f9874821b7d1141c44fa250c07bd90fd83ae524795f94266e316f51839f48bd84b4681c9e8042242d3405

Download Submit
memory/2788-0-0x0000000000AB0000-0x0000000000DD4000-memory.dmp

Filesize
3.1MB

Download
memory/2788-1-0x00007FF8B17D3000-0x00007FF8B17D5000-memory.dmp

Filesize
8KB

Download
memory/2788-2-0x00007FF8B17D0000-0x00007FF8B2291000-memory.dmp

Filesize
10.8MB

Download
memory/2788-9-0x00007FF8B17D0000-0x00007FF8B2291000-memory.dmp

Filesize
10.8MB

Download
memory/3136-10-0x00007FF8B17D0000-0x00007FF8B2291000-memory.dmp

Filesize
10.8MB

Download
memory/3136-11-0x00007FF8B17D0000-0x00007FF8B2291000-memory.dmp

Filesize
10.8MB

Download
memory/3136-12-0x000000001B5F0000-0x000000001B640000-memory.dmp

Filesize
320KB

Download
memory/3136-13-0x000000001D7D0000-0x000000001D882000-memory.dmp

Filesize
712KB

Download
memory/3136-14-0x00007FF8B17D0000-0x00007FF8B2291000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads