quasar | 06f7a5380d0d2f23e9c481071e7766486806d38c6cd5785b5897863b481d56d1

Analysis

max time kernel
128s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
21/03/2023, 02:57

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General

Target
Dell-Spoofer.exe
Size 3.1MB
Sample230321-dfk6hsae8w
SHA256 06f7a5380d0d2f23e9c481071e7766486806d38c6cd5785b5897863b481d56d1
MD5 bb5e24ae449c14d485bffb194bb3326b
SHA1 9e28d1c69ce22f5345c287a7d5fab3aece14ae2d
SHA512 ec00f7318c2ae98d8da730779ee6e85ac7ece211b402f479cef9a4204bddb76fa5073c0d4afc45dcb7a5a48567efa36b8639e4ed39681706d432030df035cf97
SSDEEP 49152:rveI22SsaNYfdPBldt698dBcjHBpRJ6DbR3LoGdnTTHHB72eh2NT:rvT22SsaNYfdPBldt6+dBcjHBpRJ61X
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

ihateniggers5544.ddns.net:8809

Mutex

b70e724b-4202-4eaf-b98a-4e60321e81b1

Attributes

encryption_key
17A6263AC244917D1D2FCDF862A8A170BBA832F9
install_name
Spoofer39.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Explorer Management
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral2/memory/1528-133-0x0000000000890000-0x0000000000BB4000-memory.dmp	family_quasar
behavioral2/files/0x0001000000023105-136.dat	family_quasar
behavioral2/files/0x0001000000023105-139.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3800	Spoofer39.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
3684	schtasks.exe
3216	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1528	Dell-Spoofer.exe
Token: SeDebugPrivilege	3800	Spoofer39.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3800	Spoofer39.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3800	Spoofer39.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3800	Spoofer39.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 3216	1528	Dell-Spoofer.exe	87
PID 1528 wrote to memory of 3216	1528	Dell-Spoofer.exe	87
PID 1528 wrote to memory of 3800	1528	Dell-Spoofer.exe	88
PID 1528 wrote to memory of 3800	1528	Dell-Spoofer.exe	88
PID 3800 wrote to memory of 3684	3800	Spoofer39.exe	91
PID 3800 wrote to memory of 3684	3800	Spoofer39.exe	91

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\Dell-Spoofer.exe
"C:\Users\Admin\AppData\Local\Temp\Dell-Spoofer.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1528
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Windows Explorer Management" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:3216
- C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Windows Explorer Management" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:3684

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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

Spoofer39.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe
Size 3.1MB
SHA256 06f7a5380d0d2f23e9c481071e7766486806d38c6cd5785b5897863b481d56d1
MD5 bb5e24ae449c14d485bffb194bb3326b
SHA1 9e28d1c69ce22f5345c287a7d5fab3aece14ae2d
SHA512 ec00f7318c2ae98d8da730779ee6e85ac7ece211b402f479cef9a4204bddb76fa5073c0d4afc45dcb7a5a48567efa36b8639e4ed39681706d432030df035cf97
SSDEEP 49152:rveI22SsaNYfdPBldt698dBcjHBpRJ6DbR3LoGdnTTHHB72eh2NT:rvT22SsaNYfdPBldt6+dBcjHBpRJ61X
MD5 SHA1 SHA512 SSDEEP

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Spoofer39.exe

Path C:\Users\Admin\AppData\Roaming\SubDir\Spoofer39.exe
Size 3.1MB
SHA256 06f7a5380d0d2f23e9c481071e7766486806d38c6cd5785b5897863b481d56d1
MD5 bb5e24ae449c14d485bffb194bb3326b
SHA1 9e28d1c69ce22f5345c287a7d5fab3aece14ae2d
SHA512 ec00f7318c2ae98d8da730779ee6e85ac7ece211b402f479cef9a4204bddb76fa5073c0d4afc45dcb7a5a48567efa36b8639e4ed39681706d432030df035cf97
SSDEEP 49152:rveI22SsaNYfdPBldt698dBcjHBpRJ6DbR3LoGdnTTHHB72eh2NT:rvT22SsaNYfdPBldt6+dBcjHBpRJ61X
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1528-133-0x0000000000890000-0x0000000000BB4000-memory.dmp

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memory/1528-134-0x0000000002CA0000-0x0000000002CB0000-memory.dmp

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memory/3800-140-0x000000001CAB0000-0x000000001CAC0000-memory.dmp

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memory/3800-141-0x000000001D840000-0x000000001D890000-memory.dmp

Download

memory/3800-142-0x000000001D950000-0x000000001DA02000-memory.dmp

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memory/3800-143-0x000000001CAB0000-0x000000001CAC0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads