quasar | ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4

General

Target

ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe
Size

3.1MB
MD5

ff7d780fa5f307da8d52650d52c9f0f7
SHA1

3d687e6aa07995b8415a74cb5700b1abdb48ae3b
SHA256

ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4
SHA512

4ba9b40ae829bec98a7bb156cb574d820b4aaaf4958d0543c9946afa2f5cbfc6989e6bed9ef507f16d9d540e7e85aab24be8d7a87689242610e586f270271e8f
SSDEEP

49152:Svht62XlaSFNWPjljiFa2RoUYIz5aqVkooGdoxTHHB72eh2NT:SvL62XlaSFNWPjljiFXRoUYIz5aqVN4

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

0.tcp.us-cal-1.ngrok.io:15579

Mutex

11bbf22e-826e-486b-b024-adbd86228a9e

Attributes

encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
ctfmon
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/1996-1-0x0000000000880000-0x0000000000BA4000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023cbf-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1920	Client.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
15	0.tcp.us-cal-1.ngrok.io
48	0.tcp.us-cal-1.ngrok.io
63	0.tcp.us-cal-1.ngrok.io

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
752	schtasks.exe
2008	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1996	ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe
Token: SeDebugPrivilege	1920	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1920	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1920	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1920	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 752	1996	ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe	85
PID 1996 wrote to memory of 752	1996	ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe	85
PID 1996 wrote to memory of 1920	1996	ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe	87
PID 1996 wrote to memory of 1920	1996	ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe	87
PID 1920 wrote to memory of 2008	1920	Client.exe	88
PID 1920 wrote to memory of 2008	1920	Client.exe	88

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\ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe
"C:\Users\Admin\AppData\Local\Temp\ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:752
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.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:1920
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
ff7d780fa5f307da8d52650d52c9f0f7

SHA1
3d687e6aa07995b8415a74cb5700b1abdb48ae3b

SHA256
ed340526b36db90f266db2a5f1c48c109ecc51ea6bdb9e907240c3da858b74e4

SHA512
4ba9b40ae829bec98a7bb156cb574d820b4aaaf4958d0543c9946afa2f5cbfc6989e6bed9ef507f16d9d540e7e85aab24be8d7a87689242610e586f270271e8f

Download Submit
memory/1920-9-0x00007FFC0F4F0000-0x00007FFC0FFB1000-memory.dmp

Filesize
10.8MB

Download
memory/1920-11-0x00007FFC0F4F0000-0x00007FFC0FFB1000-memory.dmp

Filesize
10.8MB

Download
memory/1920-12-0x000000001CBE0000-0x000000001CC30000-memory.dmp

Filesize
320KB

Download
memory/1920-13-0x000000001CCF0000-0x000000001CDA2000-memory.dmp

Filesize
712KB

Download
memory/1920-14-0x00007FFC0F4F0000-0x00007FFC0FFB1000-memory.dmp

Filesize
10.8MB

Download
memory/1996-0-0x00007FFC0F4F3000-0x00007FFC0F4F5000-memory.dmp

Filesize
8KB

Download
memory/1996-1-0x0000000000880000-0x0000000000BA4000-memory.dmp

Filesize
3.1MB

Download
memory/1996-2-0x00007FFC0F4F0000-0x00007FFC0FFB1000-memory.dmp

Filesize
10.8MB

Download
memory/1996-10-0x00007FFC0F4F0000-0x00007FFC0FFB1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads