quasar | 93a291be0837344a2f715c9941a23b03232294865835f1dce8e81fdce5382bc9

Analysis

max time kernel
103s
max time network
112s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
15-12-2024 15:42

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General

Target

app.exe
Size

3.1MB
MD5

b8f097d5264902c9a54edf5cb26b4731
SHA1

4c2670bc094f0ed3b44de87fca95403073ddd81d
SHA256

93a291be0837344a2f715c9941a23b03232294865835f1dce8e81fdce5382bc9
SHA512

983ae07639c872fbcf07aac883f76f9cc04e7ad3b743be3d500818830ff0db8a9626a32ff7c8a7c3e11ff991a94d8c942d6702f3ec9d2aba7f65a3b290e980d5
SSDEEP

49152:OvWI22SsaNYfdPBldt698dBcjHddRJ6xbR3LoGdyVTHHB72eh2NT:Ov722SsaNYfdPBldt6+dBcjHddRJ6T

Score

10^/10

quasar kdotcrypt discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

KDOTCrypt

fedx.ddns.net:7000

Mutex

70b69453-9c90-490b-81c2-83279615d904

Attributes

encryption_key
92470F4731518ABFA77DC89068544FB7E7B7C459
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 1 IoCs

resource	yara_rule
behavioral1/memory/3160-1-0x0000000000D60000-0x0000000001084000-memory.dmp	family_quasar

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3829776853-2076861744-2973657197-1000\Control Panel\International\Geo\Nation	app.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3804	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3804	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3160	app.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3160 wrote to memory of 220	3160	app.exe	85
PID 3160 wrote to memory of 220	3160	app.exe	85
PID 220 wrote to memory of 2184	220	cmd.exe	87
PID 220 wrote to memory of 2184	220	cmd.exe	87
PID 220 wrote to memory of 3804	220	cmd.exe	88
PID 220 wrote to memory of 3804	220	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\app.exe
"C:\Users\Admin\AppData\Local\Temp\app.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3160
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\rEVSJ41AB8P7.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:220
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2184
- - C:\Windows\system32\PING.EXE
    ping -n 10 localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rEVSJ41AB8P7.bat

Filesize
204B

MD5
dd34d9a2e8ddcf37836c33015392d31f

SHA1
161d7361c42829369837284451936b9bcfa96b35

SHA256
552e1270540594677c25996fcb1e0f8d4c8a2f0c18114566e69f6d4f723c2133

SHA512
1dc794fafbcee3e7f4e8c6a7620bafcfcdb67a18b0dbfe75ee852a857777dfebcbc7d0d7720cf6e5f20a3ef52213f8a23f219eef7956800ff8be1e4e946ce10a

Download Submit
memory/3160-0-0x00007FF849783000-0x00007FF849785000-memory.dmp

Filesize
8KB

Download
memory/3160-1-0x0000000000D60000-0x0000000001084000-memory.dmp

Filesize
3.1MB

Download
memory/3160-2-0x00007FF849780000-0x00007FF84A242000-memory.dmp

Filesize
10.8MB

Download
memory/3160-3-0x000000001BC00000-0x000000001BC50000-memory.dmp

Filesize
320KB

Download
memory/3160-4-0x000000001E2B0000-0x000000001E362000-memory.dmp

Filesize
712KB

Download
memory/3160-5-0x000000001BBE0000-0x000000001BBF2000-memory.dmp

Filesize
72KB

Download
memory/3160-6-0x000000001E230000-0x000000001E26C000-memory.dmp

Filesize
240KB

Download
memory/3160-7-0x00007FF849783000-0x00007FF849785000-memory.dmp

Filesize
8KB

Download
memory/3160-8-0x00007FF849780000-0x00007FF84A242000-memory.dmp

Filesize
10.8MB

Download
memory/3160-16-0x00007FF849780000-0x00007FF84A242000-memory.dmp

Filesize
10.8MB

Download