quasar | 70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2025, 17:22

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General

Target

minico.exe
Size

3.1MB
MD5

3c967ba67c97bd75f817c034d7c5180a
SHA1

03e417a484aedcf7694ec1d25d2b8fb4d15236e3
SHA256

70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2
SHA512

0734747ec59585892f17a113e1a296d4a5635d4e12485fd76d42aa8aa1737f713ac78ace901b952c3aa8091cb1bcec316f1de39d43f0473d3135c6b9628700e7
SSDEEP

49152:zvHlL26AaNeWgPhlmVqvMQ7XSKApRJ6GbR3LoGd+THHB72eh2NT:zvFL26AaNeWgPhlmVqkQ7XSKApRJ6A

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

vewifow477-24147.portmap.host:24147

Mutex

c774d406-1616-403d-b459-8701fe187966

Attributes

encryption_key
437867A53E12884A81A466934A01D12C44465D37
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
DisplayResolutionRuntimes
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4744-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c7a-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2640	Client.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	minico.exe
Token: SeDebugPrivilege	2640	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2640	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2640	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2640	Client.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 2640	4744	minico.exe	86
PID 4744 wrote to memory of 2640	4744	minico.exe	86

C:\Users\Admin\AppData\Local\Temp\minico.exe
"C:\Users\Admin\AppData\Local\Temp\minico.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4744
- 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 FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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
3c967ba67c97bd75f817c034d7c5180a

SHA1
03e417a484aedcf7694ec1d25d2b8fb4d15236e3

SHA256
70bceb4e3e62015b87de30e1063f0dd64c2d43255211845d64ef508d05e17ff2

SHA512
0734747ec59585892f17a113e1a296d4a5635d4e12485fd76d42aa8aa1737f713ac78ace901b952c3aa8091cb1bcec316f1de39d43f0473d3135c6b9628700e7

Download Submit
memory/2640-8-0x00007FF972800000-0x00007FF9732C1000-memory.dmp

Filesize
10.8MB

Download
memory/2640-10-0x00007FF972800000-0x00007FF9732C1000-memory.dmp

Filesize
10.8MB

Download
memory/2640-11-0x000000001C1E0000-0x000000001C230000-memory.dmp

Filesize
320KB

Download
memory/2640-12-0x000000001C2F0000-0x000000001C3A2000-memory.dmp

Filesize
712KB

Download
memory/2640-13-0x00007FF972800000-0x00007FF9732C1000-memory.dmp

Filesize
10.8MB

Download
memory/4744-0-0x00007FF972803000-0x00007FF972805000-memory.dmp

Filesize
8KB

Download
memory/4744-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp

Filesize
3.1MB

Download
memory/4744-2-0x00007FF972800000-0x00007FF9732C1000-memory.dmp

Filesize
10.8MB

Download
memory/4744-9-0x00007FF972800000-0x00007FF9732C1000-memory.dmp

Filesize
10.8MB

Download