quasar | 7dc1fd4a138be818ea68ea646718e202e386b0ed202108f6958309ff3455693c

Analysis

max time kernel
63s
max time network
67s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-01-2025 06:36

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General

Target

minko.exe
Size

3.1MB
MD5

f58a18b8929f009586495b2607a8b806
SHA1

524c72a260cc4f80e2e4c92acad39aa16a05254c
SHA256

7dc1fd4a138be818ea68ea646718e202e386b0ed202108f6958309ff3455693c
SHA512

3c2449f8fbb9a19543163bb37bb8909208a45754ed317cdb7c8707b7bd3682c105e36712c070a8ec22217cc54b93cd042e834bbad076187455a8b4f0995b9c7f
SSDEEP

49152:Gvkt62XlaSFNWPjljiFa2RoUYIT59oCLNLoGdBhTHHB72eh2NT:Gv462XlaSFNWPjljiFXRoUYIT59bx

Score

10^/10

quasar minko spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

minko

192.168.1.104:4782

Mutex

7f791aa9-cb89-4d49-8582-d2bee1e4c964

Attributes

encryption_key
EDB1628352F4EB382035992E9E2540BB09AFD0AA
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Client
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/3180-1-0x00000000001E0000-0x0000000000504000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023cab-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1456	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

pid	Process
4056	schtasks.exe
4084	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3180	minko.exe
Token: SeDebugPrivilege	1456	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1456	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4056	3180	minko.exe	85
PID 3180 wrote to memory of 4056	3180	minko.exe	85
PID 3180 wrote to memory of 1456	3180	minko.exe	87
PID 3180 wrote to memory of 1456	3180	minko.exe	87
PID 1456 wrote to memory of 4084	1456	Client.exe	88
PID 1456 wrote to memory of 4084	1456	Client.exe	88

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\minko.exe
"C:\Users\Admin\AppData\Local\Temp\minko.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Client" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4056
- 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:1456
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Client" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4084

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\Client.exe

Filesize
3.1MB

MD5
f58a18b8929f009586495b2607a8b806

SHA1
524c72a260cc4f80e2e4c92acad39aa16a05254c

SHA256
7dc1fd4a138be818ea68ea646718e202e386b0ed202108f6958309ff3455693c

SHA512
3c2449f8fbb9a19543163bb37bb8909208a45754ed317cdb7c8707b7bd3682c105e36712c070a8ec22217cc54b93cd042e834bbad076187455a8b4f0995b9c7f

Download Submit
memory/1456-10-0x00007FFDF70D0000-0x00007FFDF7B91000-memory.dmp

Filesize
10.8MB

Download
memory/1456-11-0x00007FFDF70D0000-0x00007FFDF7B91000-memory.dmp

Filesize
10.8MB

Download
memory/1456-12-0x000000001C530000-0x000000001C580000-memory.dmp

Filesize
320KB

Download
memory/1456-13-0x000000001C640000-0x000000001C6F2000-memory.dmp

Filesize
712KB

Download
memory/1456-14-0x00007FFDF70D0000-0x00007FFDF7B91000-memory.dmp

Filesize
10.8MB

Download
memory/3180-0-0x00007FFDF70D3000-0x00007FFDF70D5000-memory.dmp

Filesize
8KB

Download
memory/3180-1-0x00000000001E0000-0x0000000000504000-memory.dmp

Filesize
3.1MB

Download
memory/3180-2-0x00007FFDF70D0000-0x00007FFDF7B91000-memory.dmp

Filesize
10.8MB

Download
memory/3180-9-0x00007FFDF70D0000-0x00007FFDF7B91000-memory.dmp

Filesize
10.8MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads