quasar | 8a9718d2658c908e0ced599e637ce1ab27cfc22e43829ae6bcf784a8591825eb

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21/08/2024, 05:10

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General

Target

DOX !Aka team ‮gnp.scr
Size

1.5MB
MD5

8cb48770ef48c80f07c8a7a3ef1586ee
SHA1

1d1083098c4841ff23e3b040fb209af9887feb59
SHA256

8a9718d2658c908e0ced599e637ce1ab27cfc22e43829ae6bcf784a8591825eb
SHA512

befee76662064711a8ee60adf9aaaa3ccc3f4203db06974314d3d620d6e65e8789b5c2357bf75cfec5b65eb8258b07fc34887e4f8a632617b2927b2988a3365f
SSDEEP

49152:zDjlabwz95bKxxiXIHLyoltXyYfyu7aOCwI:/qw/2xqIHL5tCl7OCwI

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.0.27:4782

Mutex

52f67a9c-ccc2-4eec-a61c-1567fbfeab31

Attributes

encryption_key
E57D88E5AA0EFBFC2E93ADCD1BD6BB2BCF4B3BAA
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 payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000800000002343e-6.dat	family_quasar
behavioral2/memory/4436-15-0x0000000000DB0000-0x00000000010D4000-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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	DOX !Aka team ‮gnp.scr

Executes dropped EXE 1 IoCs

pid	Process
4436	Client-built.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4436	Client-built.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4436	Client-built.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4436	Client-built.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 4436	4900	DOX !Aka team ‮gnp.scr	92
PID 4900 wrote to memory of 4436	4900	DOX !Aka team ‮gnp.scr	92

C:\Users\Admin\AppData\Local\Temp\DOX !Aka team ‮gnp.scr
"C:\Users\Admin\AppData\Local\Temp\DOX !Aka team ‮gnp.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:4436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

Filesize
3.1MB

MD5
6594c1c527c01d4a3031cd531f4d9feb

SHA1
3ac67da27beeee7089030f45b7b46cd83e8f38d4

SHA256
4b751e42cb5775f3ba47a7fdfe6864e3a48d39ed58d3ba678c8a16f8ab741bd1

SHA512
d241cc0597c3da66b64a3bfc0479990d4fff506d70f94a656dda620fe426369989e26c54e395b2a82f0cd9b21ad9e3ed9595b927c356b0f7651f0784ac831e38

Download Submit
memory/4436-14-0x00007FFA7A603000-0x00007FFA7A605000-memory.dmp

Filesize
8KB

Download
memory/4436-15-0x0000000000DB0000-0x00000000010D4000-memory.dmp

Filesize
3.1MB

Download
memory/4436-16-0x00007FFA7A600000-0x00007FFA7B0C1000-memory.dmp

Filesize
10.8MB

Download
memory/4436-17-0x000000001C7C0000-0x000000001C810000-memory.dmp

Filesize
320KB

Download
memory/4436-18-0x000000001C8D0000-0x000000001C982000-memory.dmp

Filesize
712KB

Download
memory/4436-19-0x00007FFA7A603000-0x00007FFA7A605000-memory.dmp

Filesize
8KB

Download
memory/4436-20-0x00007FFA7A600000-0x00007FFA7B0C1000-memory.dmp

Filesize
10.8MB

Download