quasar | 0d69a444fa9c4b6fe43db02f63cb7fa91ba1ab7f1161b8ad660706853955e83e

General

Target

Runtimes.exe
Size

506KB
MD5

0d5bd8080ffea16a28c91cacf5b532d4
SHA1

a7b23b3e075d9c6e338a0c9f9e95d59c706e8f73
SHA256

0d69a444fa9c4b6fe43db02f63cb7fa91ba1ab7f1161b8ad660706853955e83e
SHA512

3ad95044b6d285c9b59e39969b082a87a35721b01ea15565c6ded2f936ba12905be5a1a02e88ee6d75e94492414329e116c7cd8323241381d4cac4865d4a242b
SSDEEP

6144:BTEgdc0Y2X7IxUpGREWLOHAZTPwbb2cEFEb8F9omJhAn9AucTR3i:BTEgdfYXxU2G21PKOhwcdi

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

0.tcp.ngrok.io:12508

Mutex

43d3e5de-3573-4168-9254-edea557688f4

Attributes

encryption_key
ACAA20F8D9EB02A78F450224DE77825C125872E8
install_name
Runtimes.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Cortana
subdirectory
SubDir

Signatures

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

Quasar payload 5 IoCs

resource	yara_rule
behavioral1/memory/1972-54-0x00000000008D0000-0x0000000000954000-memory.dmp	family_quasar
behavioral1/memory/1972-55-0x000000001B110000-0x000000001B190000-memory.dmp	family_quasar
behavioral1/files/0x000a000000012314-58.dat	family_quasar
behavioral1/files/0x000a000000012314-59.dat	family_quasar
behavioral1/memory/672-60-0x0000000001080000-0x0000000001104000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
672	Runtimes.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

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
568	schtasks.exe
544	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1972	Runtimes.exe
Token: SeDebugPrivilege	672	Runtimes.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
672	Runtimes.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
672	Runtimes.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 544	1972	Runtimes.exe	28
PID 1972 wrote to memory of 544	1972	Runtimes.exe	28
PID 1972 wrote to memory of 544	1972	Runtimes.exe	28
PID 1972 wrote to memory of 672	1972	Runtimes.exe	29
PID 1972 wrote to memory of 672	1972	Runtimes.exe	29
PID 1972 wrote to memory of 672	1972	Runtimes.exe	29
PID 672 wrote to memory of 568	672	Runtimes.exe	30
PID 672 wrote to memory of 568	672	Runtimes.exe	30
PID 672 wrote to memory of 568	672	Runtimes.exe	30

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\Runtimes.exe
"C:\Users\Admin\AppData\Local\Temp\Runtimes.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Cortana" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Runtimes.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:544
- C:\Users\Admin\AppData\Roaming\SubDir\Runtimes.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Runtimes.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:672
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Cortana" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtimes.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Runtimes.exe

Filesize
506KB

MD5
0d5bd8080ffea16a28c91cacf5b532d4

SHA1
a7b23b3e075d9c6e338a0c9f9e95d59c706e8f73

SHA256
0d69a444fa9c4b6fe43db02f63cb7fa91ba1ab7f1161b8ad660706853955e83e

SHA512
3ad95044b6d285c9b59e39969b082a87a35721b01ea15565c6ded2f936ba12905be5a1a02e88ee6d75e94492414329e116c7cd8323241381d4cac4865d4a242b

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Runtimes.exe

Filesize
506KB

MD5
0d5bd8080ffea16a28c91cacf5b532d4

SHA1
a7b23b3e075d9c6e338a0c9f9e95d59c706e8f73

SHA256
0d69a444fa9c4b6fe43db02f63cb7fa91ba1ab7f1161b8ad660706853955e83e

SHA512
3ad95044b6d285c9b59e39969b082a87a35721b01ea15565c6ded2f936ba12905be5a1a02e88ee6d75e94492414329e116c7cd8323241381d4cac4865d4a242b

Download Submit
memory/672-60-0x0000000001080000-0x0000000001104000-memory.dmp

Filesize
528KB

Download
memory/672-61-0x000000001AFA0000-0x000000001B020000-memory.dmp

Filesize
512KB

Download
memory/672-62-0x000000001AFA0000-0x000000001B020000-memory.dmp

Filesize
512KB

Download
memory/1972-54-0x00000000008D0000-0x0000000000954000-memory.dmp

Filesize
528KB

Download
memory/1972-55-0x000000001B110000-0x000000001B190000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads