quasar | 0cbcab350f25f5764dc967cf6f764eccdd094b1f8ca14d60a731713ace6b1aec

General

Target

Modification11910275.exe
Size

3.1MB
MD5

fa9b1524e725c4a251d07007f15fa947
SHA1

5c023619d8180b611acb544fa1cd8bd31de9e61c
SHA256

0cbcab350f25f5764dc967cf6f764eccdd094b1f8ca14d60a731713ace6b1aec
SHA512

dac63f0970092186a909dafeb75cee3e1ad3b393984cf78a1d88e339a39ef235567f74b7a874b237762b8a46e74f8cb319add4bcbc4bdf8f76ec8e1476fb44db
SSDEEP

49152:nvKlL26AaNeWgPhlmVqvMQ7XSKrCW1JeLoGdeSTHHB72eh2NT:nvyL26AaNeWgPhlmVqkQ7XSKrCN

Score

10^/10

quasar bot spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

bot

C2

wooting2000-47095.portmap.host:47095

Mutex

2e05f1ef-743b-4020-b18a-7f4276517e8b

Attributes

encryption_key
E83D6FC31962786DAEA703F111D2381786DF06CA
install_name
Modification1.5.14.12.exe
log_directory
Logs
reconnect_delay
3126
startup_key
explorer.dll
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2376-1-0x0000000000E70000-0x0000000001194000-memory.dmp	family_quasar
C:\Windows\System32\SubDir\Modification1.5.14.12.exe	family_quasar
behavioral1/memory/2384-10-0x0000000001020000-0x0000000001344000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Modification1.5.14.12.exe

pid process

2384 Modification1.5.14.12.exe

pid	process
2384	Modification1.5.14.12.exe

Drops file in System32 directory 5 IoCs

Processes:

Modification11910275.exeModification1.5.14.12.exe

description	ioc	process
File opened for modification	C:\Windows\system32\SubDir\Modification1.5.14.12.exe	Modification11910275.exe
File opened for modification	C:\Windows\system32\SubDir	Modification11910275.exe
File opened for modification	C:\Windows\system32\SubDir\Modification1.5.14.12.exe	Modification1.5.14.12.exe
File opened for modification	C:\Windows\system32\SubDir	Modification1.5.14.12.exe
File created	C:\Windows\system32\SubDir\Modification1.5.14.12.exe	Modification11910275.exe

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

Processes:

schtasks.exeschtasks.exe

pid process

2520 schtasks.exe
2892 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Modification11910275.exeModification1.5.14.12.exe

description pid process

Token: SeDebugPrivilege 2376 Modification11910275.exe
Token: SeDebugPrivilege 2384 Modification1.5.14.12.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Modification1.5.14.12.exe

pid process

2384 Modification1.5.14.12.exe

pid	process
2520	schtasks.exe
2892	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2376	Modification11910275.exe
Token: SeDebugPrivilege	2384	Modification1.5.14.12.exe

pid	process
2384	Modification1.5.14.12.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Modification11910275.exeModification1.5.14.12.exe

description	pid	process	target process
PID 2376 wrote to memory of 2520	2376	Modification11910275.exe	schtasks.exe
PID 2376 wrote to memory of 2520	2376	Modification11910275.exe	schtasks.exe
PID 2376 wrote to memory of 2520	2376	Modification11910275.exe	schtasks.exe
PID 2376 wrote to memory of 2384	2376	Modification11910275.exe	Modification1.5.14.12.exe
PID 2376 wrote to memory of 2384	2376	Modification11910275.exe	Modification1.5.14.12.exe
PID 2376 wrote to memory of 2384	2376	Modification11910275.exe	Modification1.5.14.12.exe
PID 2384 wrote to memory of 2892	2384	Modification1.5.14.12.exe	schtasks.exe
PID 2384 wrote to memory of 2892	2384	Modification1.5.14.12.exe	schtasks.exe
PID 2384 wrote to memory of 2892	2384	Modification1.5.14.12.exe	schtasks.exe

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\Modification11910275.exe
"C:\Users\Admin\AppData\Local\Temp\Modification11910275.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "explorer.dll" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Modification1.5.14.12.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2520
- C:\Windows\system32\SubDir\Modification1.5.14.12.exe
  "C:\Windows\system32\SubDir\Modification1.5.14.12.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "explorer.dll" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Modification1.5.14.12.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2892

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\SubDir\Modification1.5.14.12.exe

Filesize
3.1MB

MD5
fa9b1524e725c4a251d07007f15fa947

SHA1
5c023619d8180b611acb544fa1cd8bd31de9e61c

SHA256
0cbcab350f25f5764dc967cf6f764eccdd094b1f8ca14d60a731713ace6b1aec

SHA512
dac63f0970092186a909dafeb75cee3e1ad3b393984cf78a1d88e339a39ef235567f74b7a874b237762b8a46e74f8cb319add4bcbc4bdf8f76ec8e1476fb44db

Download Submit
memory/2376-0-0x000007FEF5903000-0x000007FEF5904000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x0000000000E70000-0x0000000001194000-memory.dmp

Filesize
3.1MB

Download
memory/2376-2-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2376-8-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2384-10-0x0000000001020000-0x0000000001344000-memory.dmp

Filesize
3.1MB

Download
memory/2384-9-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2384-11-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download
memory/2384-12-0x000007FEF5900000-0x000007FEF62EC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads