quasar | cff0e57630d92a40cb239230dfb9d293b2406f91c8374fda5d4ff70b6c8310f6

Analysis

max time kernel
5s
max time network
6s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 09:21

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General

Target

OneDrive.exe
Size

3.1MB
MD5

12bcc06c6099dfa56cce7a20fda7c8ab
SHA1

3b5e6d75d161b21e5a89602c509832d0a416eaf2
SHA256

cff0e57630d92a40cb239230dfb9d293b2406f91c8374fda5d4ff70b6c8310f6
SHA512

2d1ce86d47ba9ea2ebbcc3db2249c5374d90873ac5117464b50acc554b3936f910ab1f1f5745b7652a892e3090c12c52d56feaec4bd835264d033ed0a1a8ee89
SSDEEP

49152:ivxt62XlaSFNWPjljiFa2RoUYIcDxNESEYk/i8LoGd8JTHHB72eh2NT:iv762XlaSFNWPjljiFXRoUYI4xjC

Score

10^/10

quasar new spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

new

194.26.192.167:2768

Mutex

67b58d78-e769-403e-bf6e-e83f8f31b2f5

Attributes

encryption_key
BE2B0B270E4DB19CAA5C42E9D2EBF64645A2D055
install_name
OneDrive.exe
log_directory
Logs
reconnect_delay
3000
startup_key
OneDrive
subdirectory
OneDrive

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/1620-1-0x00000000002E0000-0x0000000000604000-memory.dmp	family_quasar

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1144	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	OneDrive.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1620	OneDrive.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 1144	1620	OneDrive.exe	30
PID 1620 wrote to memory of 1144	1620	OneDrive.exe	30
PID 1620 wrote to memory of 1144	1620	OneDrive.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\OneDrive.exe
"C:\Users\Admin\AppData\Local\Temp\OneDrive.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "OneDrive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1144

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

memory/1620-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

Filesize
4KB

Download
memory/1620-1-0x00000000002E0000-0x0000000000604000-memory.dmp

Filesize
3.1MB

Download
memory/1620-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads