quasar | 5eb26eb056480f6083f7565a572b2dd6ebc992a99d8220dbf0d736c7b4a12077

Analysis

max time kernel
148s
max time network
150s
platform
windows10_x64
resource
win10v20201028
submitted
09/11/2020, 19:27

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General

Target
file.exe
Size 348KB
Sample201109-hfxbs3tnfa
SHA256 5eb26eb056480f6083f7565a572b2dd6ebc992a99d8220dbf0d736c7b4a12077
MD5 fd8ca662ec7eebf8c0433dd7a7aec732
SHA1 a8c0a6e632000dc0ff0bc31643b26ed52616336a
SHA512 9f13e18d77404d950794c3b3407e59aff92fa6647f7a9d59e18916fa7fc90783a1b0c81c46fd9baac989431712f8696bf22e3e921fd8942e8cf3a0946bc1e08b
MD5 SHA1 SHA512

Score

10^/10

quasar spyware trojan

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4248	0ffice.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
10	ip-api.com

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
1252	schtasks.exe
3100	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	file.exe
Token: SeDebugPrivilege	4248	0ffice.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4248	0ffice.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 3100	4760	file.exe	75
PID 4760 wrote to memory of 3100	4760	file.exe	75
PID 4760 wrote to memory of 3100	4760	file.exe	75
PID 4760 wrote to memory of 4248	4760	file.exe	77
PID 4760 wrote to memory of 4248	4760	file.exe	77
PID 4760 wrote to memory of 4248	4760	file.exe	77
PID 4248 wrote to memory of 1252	4248	0ffice.exe	81
PID 4248 wrote to memory of 1252	4248	0ffice.exe	81
PID 4248 wrote to memory of 1252	4248	0ffice.exe	81

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "msg" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\file.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:3100
- C:\Users\Admin\AppData\Roaming\Office\0ffice.exe
  "C:\Users\Admin\AppData\Roaming\Office\0ffice.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4248
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "msg" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Office\0ffice.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1252

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4248-21-0x0000000006680000-0x0000000006681000-memory.dmp

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memory/4248-12-0x0000000073370000-0x0000000073A5E000-memory.dmp

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memory/4760-4-0x0000000005060000-0x0000000005061000-memory.dmp

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memory/4760-7-0x00000000061A0000-0x00000000061A1000-memory.dmp

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memory/4760-6-0x0000000005DB0000-0x0000000005DB1000-memory.dmp

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memory/4760-5-0x0000000005220000-0x0000000005221000-memory.dmp

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memory/4760-0-0x0000000073370000-0x0000000073A5E000-memory.dmp

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memory/4760-3-0x0000000005450000-0x0000000005451000-memory.dmp

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memory/4760-1-0x00000000007A0000-0x00000000007A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads