quasar | a4b343420149aabd8ef8af687bcb7b252af476c4c8fdad177c3cf5d65ccf912e

Analysis

max time kernel
142s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2024 20:57

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General

Target

Loltimo.exe
Size

3.1MB
MD5

afb2e5dad453db7cf42339f806f37532
SHA1

90fa9e8b4ed9d086d67b9f86dc57151db1637ca9
SHA256

a4b343420149aabd8ef8af687bcb7b252af476c4c8fdad177c3cf5d65ccf912e
SHA512

72c3474f11a90bd904957030d019611c460dfa66524e0113b40b18a4ae0f3d81d56ae125fa2f247b266e71a11fcaad5884987036563e9464dc2e973877f79f3f
SSDEEP

49152:Hv+lL26AaNeWgPhlmVqvMQ7XSKwkamEoXdl3THHB72eh2NT:HvuL26AaNeWgPhlmVqkQ7XSK9af8

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

Ingrid78-20703.portmap.host:20703

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes

encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
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 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1104-1-0x0000000000920000-0x0000000000C44000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

2452 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

Processes:

schtasks.exeschtasks.exe

pid process

1760 schtasks.exe
3712 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Loltimo.exeClient.exe

description pid process

Token: SeDebugPrivilege 1104 Loltimo.exe
Token: SeDebugPrivilege 2452 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

2452 Client.exe

pid	process
2452	Client.exe

pid	process
1760	schtasks.exe
3712	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1104	Loltimo.exe
Token: SeDebugPrivilege	2452	Client.exe

pid	process
2452	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Loltimo.exeClient.exe

description	pid	process	target process
PID 1104 wrote to memory of 1760	1104	Loltimo.exe	schtasks.exe
PID 1104 wrote to memory of 1760	1104	Loltimo.exe	schtasks.exe
PID 1104 wrote to memory of 2452	1104	Loltimo.exe	Client.exe
PID 1104 wrote to memory of 2452	1104	Loltimo.exe	Client.exe
PID 2452 wrote to memory of 3712	2452	Client.exe	schtasks.exe
PID 2452 wrote to memory of 3712	2452	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\Loltimo.exe
"C:\Users\Admin\AppData\Local\Temp\Loltimo.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104
- 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:1760
- 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:2452
- - 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:3712

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
afb2e5dad453db7cf42339f806f37532

SHA1
90fa9e8b4ed9d086d67b9f86dc57151db1637ca9

SHA256
a4b343420149aabd8ef8af687bcb7b252af476c4c8fdad177c3cf5d65ccf912e

SHA512
72c3474f11a90bd904957030d019611c460dfa66524e0113b40b18a4ae0f3d81d56ae125fa2f247b266e71a11fcaad5884987036563e9464dc2e973877f79f3f

Download Submit
memory/1104-0-0x00007FFF703D3000-0x00007FFF703D5000-memory.dmp

Filesize
8KB

Download
memory/1104-1-0x0000000000920000-0x0000000000C44000-memory.dmp

Filesize
3.1MB

Download
memory/1104-2-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/1104-9-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2452-11-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2452-10-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2452-12-0x000000001C690000-0x000000001C6E0000-memory.dmp

Filesize
320KB

Download
memory/2452-13-0x000000001C7A0000-0x000000001C852000-memory.dmp

Filesize
712KB

Download
memory/2452-16-0x000000001C700000-0x000000001C712000-memory.dmp

Filesize
72KB

Download
memory/2452-17-0x000000001C760000-0x000000001C79C000-memory.dmp

Filesize
240KB

Download
memory/2452-18-0x00007FFF703D0000-0x00007FFF70E91000-memory.dmp

Filesize
10.8MB

Download
memory/2452-19-0x000000001CCA0000-0x000000001CDA2000-memory.dmp

Filesize
1.0MB

Download