quasar | fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413

General

Target

fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe
Size

3.1MB
MD5

f1dd84b637552358cfc4b9dda1dc04f7
SHA1

118d8a8f4df0bd95303c977f2fa2883dbd8f4222
SHA256

fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413
SHA512

ff54ac3d296fa0907a073922b19067c942b398290c86d7b2b176f5d15c49b6486348499ac5f121aef8e5bb9ecbd1c4c6d00320528ac6b82701ccec64cf91f5da
SSDEEP

49152:GvUt62XlaSFNWPjljiFa2RoUYI5zbvsBx3AoGdkTHHB72eh2NT:GvI62XlaSFNWPjljiFXRoUYI5fvr

Score

10^/10

quasar krampus.gg spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Krampus.gg

C2

10.0.0.76:4782

Mutex

b2297f47-c39d-4f55-91d6-74d9f38e9fd1

Attributes

encryption_key
21407C13DE42FCCADE77E86119A8CD11B5DCC515
install_name
Krampus.gg.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4076-1-0x0000000000A40000-0x0000000000D64000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe	family_quasar

Detects Windows executables referencing non-Windows User-Agents 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4076-1-0x0000000000A40000-0x0000000000D64000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4076-1-0x0000000000A40000-0x0000000000D64000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables containing common artifacts observed in infostealers 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4076-1-0x0000000000A40000-0x0000000000D64000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer
C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe	INDICATOR_SUSPICIOUS_GENInfoStealer

Executes dropped EXE 1 IoCs

Processes:

Krampus.gg.exe

pid process

3044 Krampus.gg.exe
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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

840 schtasks.exe
5012 schtasks.exe

pid	process
3044	Krampus.gg.exe

pid	process
840	schtasks.exe
5012	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exeKrampus.gg.exe

description	pid	process
Token: SeDebugPrivilege	4076	fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe
Token: SeDebugPrivilege	3044	Krampus.gg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Krampus.gg.exe

pid process

3044 Krampus.gg.exe

pid	process
3044	Krampus.gg.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exeKrampus.gg.exe

description	pid	process	target process
PID 4076 wrote to memory of 840	4076	fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe	schtasks.exe
PID 4076 wrote to memory of 840	4076	fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe	schtasks.exe
PID 4076 wrote to memory of 3044	4076	fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe	Krampus.gg.exe
PID 4076 wrote to memory of 3044	4076	fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe	Krampus.gg.exe
PID 3044 wrote to memory of 5012	3044	Krampus.gg.exe	schtasks.exe
PID 3044 wrote to memory of 5012	3044	Krampus.gg.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\fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe
"C:\Users\Admin\AppData\Local\Temp\fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4076

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:840

C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3044

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:5012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Krampus.gg.exe

Filesize
3.1MB

MD5
f1dd84b637552358cfc4b9dda1dc04f7

SHA1
118d8a8f4df0bd95303c977f2fa2883dbd8f4222

SHA256
fc3e553270ca9ee914c8b813393d3a2a659a2a18e51b6a730036348bc4cae413

SHA512
ff54ac3d296fa0907a073922b19067c942b398290c86d7b2b176f5d15c49b6486348499ac5f121aef8e5bb9ecbd1c4c6d00320528ac6b82701ccec64cf91f5da

Download Submit
memory/3044-10-0x00007FFE995F0000-0x00007FFE9A0B1000-memory.dmp

Filesize
10.8MB

Download
memory/3044-11-0x00007FFE995F0000-0x00007FFE9A0B1000-memory.dmp

Filesize
10.8MB

Download
memory/3044-12-0x0000000002820000-0x0000000002870000-memory.dmp

Filesize
320KB

Download
memory/3044-13-0x000000001B970000-0x000000001BA22000-memory.dmp

Filesize
712KB

Download
memory/3044-14-0x00007FFE995F0000-0x00007FFE9A0B1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-0-0x00007FFE995F3000-0x00007FFE995F5000-memory.dmp

Filesize
8KB

Download
memory/4076-1-0x0000000000A40000-0x0000000000D64000-memory.dmp

Filesize
3.1MB

Download
memory/4076-2-0x00007FFE995F0000-0x00007FFE9A0B1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-9-0x00007FFE995F0000-0x00007FFE9A0B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads