quasar | 1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1

General

Target

1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe
Size

3.1MB
MD5

7aa529f2db5a30ed1b868c90e872ec57
SHA1

f384f3c375411eea2c72cdc15c6252102535656a
SHA256

1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1
SHA512

404f3ba56677f362129b8352f0585e13f86e8f6a6570ca1deaed9551f01fea43b523d0318e314d5d99b371a2c44ac8ed9a4dae19788b10df325147b17d0a2120
SSDEEP

49152:avht62XlaSFNWPjljiFa2RoUYIb3RJ6PbR3LoGdarTHHB72eh2NT:avL62XlaSFNWPjljiFXRoUYIb3RJ6h

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/2684-1-0x0000000000100000-0x0000000000424000-memory.dmp	family_quasar
behavioral2/files/0x0008000000023bf9-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1012	Client.exe

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

Web Service

T1102

flow	ioc
13	0.tcp.us-cal-1.ngrok.io
47	0.tcp.us-cal-1.ngrok.io
60	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
2524	schtasks.exe
3012	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2684	1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe
Token: SeDebugPrivilege	1012	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1012	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1012	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1012	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2524	2684	1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe	82
PID 2684 wrote to memory of 2524	2684	1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe	82
PID 2684 wrote to memory of 1012	2684	1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe	84
PID 2684 wrote to memory of 1012	2684	1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe	84
PID 1012 wrote to memory of 3012	1012	Client.exe	85
PID 1012 wrote to memory of 3012	1012	Client.exe	85

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\1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe
"C:\Users\Admin\AppData\Local\Temp\1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2684
- 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:2524
- 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:1012
- - 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:3012

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
7aa529f2db5a30ed1b868c90e872ec57

SHA1
f384f3c375411eea2c72cdc15c6252102535656a

SHA256
1df46d513e053da3765c3b5572fda399872f69f734a8eaf9345948a6331eefa1

SHA512
404f3ba56677f362129b8352f0585e13f86e8f6a6570ca1deaed9551f01fea43b523d0318e314d5d99b371a2c44ac8ed9a4dae19788b10df325147b17d0a2120

Download Submit
memory/1012-10-0x00007FFD22060000-0x00007FFD22B21000-memory.dmp

Filesize
10.8MB

Download
memory/1012-11-0x00007FFD22060000-0x00007FFD22B21000-memory.dmp

Filesize
10.8MB

Download
memory/1012-12-0x000000001D870000-0x000000001D8C0000-memory.dmp

Filesize
320KB

Download
memory/1012-13-0x000000001D980000-0x000000001DA32000-memory.dmp

Filesize
712KB

Download
memory/1012-14-0x00007FFD22060000-0x00007FFD22B21000-memory.dmp

Filesize
10.8MB

Download
memory/2684-0-0x00007FFD22063000-0x00007FFD22065000-memory.dmp

Filesize
8KB

Download
memory/2684-1-0x0000000000100000-0x0000000000424000-memory.dmp

Filesize
3.1MB

Download
memory/2684-2-0x00007FFD22060000-0x00007FFD22B21000-memory.dmp

Filesize
10.8MB

Download
memory/2684-9-0x00007FFD22060000-0x00007FFD22B21000-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