quasar | fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c

General

Target

fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
Size

3.5MB
MD5

1834eaa9099724ef4fe227478fed783a
SHA1

61176db35c4cda5a118bd4f3505d5bda26ebced0
SHA256

fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c
SHA512

04191f86b0f2d9c1eecf71b4ff26ad20dacda5e4840b073a4c2a40b0927e8d3ec58ed6c12b4934eeaaef0e8311fe9877886ae1d4ec0970377ac6f9c00e2eced1
SSDEEP

98304:DApiYNYRIkC6rLk+hXKUXPHCU+6VbgAs25XXQn5lE1kU7:DAtYPjxJHCogAs25XAn5lEt

Score

10^/10

quasar code discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

CODE

C2

twart.myfirewall.org:9792

rency.ydns.eu:5287

wqo9.firewall-gateway.de:8841

Mutex

02351e291-5d041-4fa37-932c7-869aeiQec514992

Attributes

encryption_key
3145298725BA5E0DD56E87FFE3F8898EA81E6EDA
install_name
workbook.exe
log_directory
Logs
reconnect_delay
6000
startup_key
workbook
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4576-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

workbook.exeworkbook.exe

pid process

3052 workbook.exe
3656 workbook.exe

pid	process
3052	workbook.exe
3656	workbook.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exeworkbook.exe

description	pid	process	target process
PID 4956 set thread context of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 3052 set thread context of 3656	3052	workbook.exe	workbook.exe

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

workbook.exeworkbook.exeschtasks.exefd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exefd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exeschtasks.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	workbook.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	workbook.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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

4964 schtasks.exe
1988 schtasks.exe

pid	process
4964	schtasks.exe
1988	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exeworkbook.exe

description	pid	process
Token: SeDebugPrivilege	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
Token: SeDebugPrivilege	3656	workbook.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

workbook.exe

pid process

3656 workbook.exe

pid	process
3656	workbook.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exefd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exeworkbook.exeworkbook.exe

description	pid	process	target process
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4956 wrote to memory of 4576	4956	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
PID 4576 wrote to memory of 4964	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	schtasks.exe
PID 4576 wrote to memory of 4964	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	schtasks.exe
PID 4576 wrote to memory of 4964	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	schtasks.exe
PID 4576 wrote to memory of 3052	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	workbook.exe
PID 4576 wrote to memory of 3052	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	workbook.exe
PID 4576 wrote to memory of 3052	4576	fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3052 wrote to memory of 3656	3052	workbook.exe	workbook.exe
PID 3656 wrote to memory of 1988	3656	workbook.exe	schtasks.exe
PID 3656 wrote to memory of 1988	3656	workbook.exe	schtasks.exe
PID 3656 wrote to memory of 1988	3656	workbook.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
"C:\Users\Admin\AppData\Local\Temp\fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Users\Admin\AppData\Local\Temp\fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe
  "C:\Users\Admin\AppData\Local\Temp\fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4576
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "workbook" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4964
- - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3052
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3656
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "workbook" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1988

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe

Filesize
3.5MB

MD5
1834eaa9099724ef4fe227478fed783a

SHA1
61176db35c4cda5a118bd4f3505d5bda26ebced0

SHA256
fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c

SHA512
04191f86b0f2d9c1eecf71b4ff26ad20dacda5e4840b073a4c2a40b0927e8d3ec58ed6c12b4934eeaaef0e8311fe9877886ae1d4ec0970377ac6f9c00e2eced1

Download Submit
memory/3052-22-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-30-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-25-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/3052-24-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/3656-33-0x0000000006B80000-0x0000000006C32000-memory.dmp

Filesize
712KB

Download
memory/3656-32-0x0000000006910000-0x0000000006960000-memory.dmp

Filesize
320KB

Download
memory/3656-31-0x0000000006DA0000-0x00000000073B8000-memory.dmp

Filesize
6.1MB

Download
memory/4576-14-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4576-23-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4576-16-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4576-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/4956-8-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/4956-4-0x00000000056C0000-0x00000000056CA000-memory.dmp

Filesize
40KB

Download
memory/4956-15-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-1-0x0000000000930000-0x0000000000CC0000-memory.dmp

Filesize
3.6MB

Download
memory/4956-10-0x0000000007DC0000-0x0000000008128000-memory.dmp

Filesize
3.4MB

Download
memory/4956-0-0x000000007463E000-0x000000007463F000-memory.dmp

Filesize
4KB

Download
memory/4956-9-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-3-0x0000000005720000-0x00000000057B2000-memory.dmp

Filesize
584KB

Download
memory/4956-7-0x0000000005950000-0x0000000005962000-memory.dmp

Filesize
72KB

Download
memory/4956-6-0x0000000074630000-0x0000000074DE0000-memory.dmp

Filesize
7.7MB

Download
memory/4956-5-0x0000000005990000-0x0000000005A2C000-memory.dmp

Filesize
624KB

Download
memory/4956-2-0x0000000005C30000-0x00000000061D4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads