quasar | 061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

General

Target

061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
Size

3.1MB
MD5

ce560e01aa6d0a1848eacb577880f112
SHA1

ac6013ab7dec397c0f14368492047e5f54091f2c
SHA256

061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb
SHA512

988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec
SSDEEP

49152:GvUt62XlaSFNWPjljiFa2RoUYI1EF3mMnAfvAoGd5THHB72eh2NT:GvI62XlaSFNWPjljiFXRoUYI1K3L

Score

10^/10

quasar su-pc spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

su-pc

C2

192.168.100.2:4444

Mutex

47a88def-94f4-406d-86f5-8b0b767128df

Attributes

encryption_key
6B74F0C858B7E90573D4E97997F2A082B9781250
install_name
x.exe
log_directory
Logs
reconnect_delay
3000
startup_key
x
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/3312-1-0x0000000000260000-0x0000000000584000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c84-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3612	x.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\SubDir\x.exe	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
File opened for modification	C:\Windows\system32\SubDir\x.exe	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
File opened for modification	C:\Windows\system32\SubDir	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
File opened for modification	C:\Windows\system32\SubDir\x.exe	x.exe
File opened for modification	C:\Windows\system32\SubDir	x.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

pid	Process
3472	schtasks.exe
4732	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
Token: SeDebugPrivilege	3612	x.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3612	x.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 3472	3312	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe	82
PID 3312 wrote to memory of 3472	3312	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe	82
PID 3312 wrote to memory of 3612	3312	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe	84
PID 3312 wrote to memory of 3612	3312	061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe	84
PID 3612 wrote to memory of 4732	3612	x.exe	85
PID 3612 wrote to memory of 4732	3612	x.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\061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe
"C:\Users\Admin\AppData\Local\Temp\061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3472
- C:\Windows\system32\SubDir\x.exe
  "C:\Windows\system32\SubDir\x.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "x" /sc ONLOGON /tr "C:\Windows\system32\SubDir\x.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4732

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\x.exe

Filesize
3.1MB

MD5
ce560e01aa6d0a1848eacb577880f112

SHA1
ac6013ab7dec397c0f14368492047e5f54091f2c

SHA256
061f0c6e8d2aa06e218364b7d0f44e689d0c6b900a06844bf272efc516dabfdb

SHA512
988a405ec7c257c43e21ac721509478113c48ae5cdbfe25d7f0227a6ff473412ba662343365d4ca899fc621b6710437128505f29cb6939f45248ff255c4565ec

Download Submit
memory/3312-0-0x00007FFBFD203000-0x00007FFBFD205000-memory.dmp

Filesize
8KB

Download
memory/3312-1-0x0000000000260000-0x0000000000584000-memory.dmp

Filesize
3.1MB

Download
memory/3312-2-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/3312-9-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-10-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-11-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/3612-12-0x000000001D7F0000-0x000000001D840000-memory.dmp

Filesize
320KB

Download
memory/3612-13-0x000000001D900000-0x000000001D9B2000-memory.dmp

Filesize
712KB

Download
memory/3612-14-0x00007FFBFD200000-0x00007FFBFDCC1000-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