quasar | fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c

General

Target

Zamówienie 89118 _ Metal-Constructions.pdf.com.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 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2536-13-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2536-15-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2536-18-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2536-10-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2536-9-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

workbook.exeworkbook.exe

pid process

2580 workbook.exe
812 workbook.exe
Loads dropped DLL 1 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.com.exe

pid process

2536 Zamówienie 89118 _ Metal-Constructions.pdf.com.exe

pid	process
2580	workbook.exe
812	workbook.exe

pid	process
2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.com.exeworkbook.exe

description	pid	process	target process
PID 2636 set thread context of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2580 set thread context of 812	2580	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:

Zamówienie 89118 _ Metal-Constructions.pdf.com.exeschtasks.exeworkbook.exeworkbook.exeschtasks.exeZamówienie 89118 _ Metal-Constructions.pdf.com.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
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	Zamówienie 89118 _ Metal-Constructions.pdf.com.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

2640 schtasks.exe
2180 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.com.exeworkbook.exe

description pid process

Token: SeDebugPrivilege 2536 Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
Token: SeDebugPrivilege 812 workbook.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

workbook.exe

pid process

812 workbook.exe

pid	process
2640	schtasks.exe
2180	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
Token: SeDebugPrivilege	812	workbook.exe

pid	process
812	workbook.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.com.exeZamówienie 89118 _ Metal-Constructions.pdf.com.exeworkbook.exeworkbook.exe

description	pid	process	target process
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2636 wrote to memory of 2536	2636	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
PID 2536 wrote to memory of 2640	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	schtasks.exe
PID 2536 wrote to memory of 2640	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	schtasks.exe
PID 2536 wrote to memory of 2640	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	schtasks.exe
PID 2536 wrote to memory of 2640	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	schtasks.exe
PID 2536 wrote to memory of 2580	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	workbook.exe
PID 2536 wrote to memory of 2580	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	workbook.exe
PID 2536 wrote to memory of 2580	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	workbook.exe
PID 2536 wrote to memory of 2580	2536	Zamówienie 89118 _ Metal-Constructions.pdf.com.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 2580 wrote to memory of 812	2580	workbook.exe	workbook.exe
PID 812 wrote to memory of 2180	812	workbook.exe	schtasks.exe
PID 812 wrote to memory of 2180	812	workbook.exe	schtasks.exe
PID 812 wrote to memory of 2180	812	workbook.exe	schtasks.exe
PID 812 wrote to memory of 2180	812	workbook.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
"C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.com.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.com.exe
  "C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.com.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2536
- - 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:2640
- - 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:2580
  - - 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:812
    - - 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:2180

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

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Downloads

\Users\Admin\AppData\Roaming\SubDir\workbook.exe

Filesize
3.5MB

MD5
1834eaa9099724ef4fe227478fed783a

SHA1
61176db35c4cda5a118bd4f3505d5bda26ebced0

SHA256
fd12d28d6b8030ec8e3d28c13ce562dc0f42b085806401b02a1155a6f44eb19c

SHA512
04191f86b0f2d9c1eecf71b4ff26ad20dacda5e4840b073a4c2a40b0927e8d3ec58ed6c12b4934eeaaef0e8311fe9877886ae1d4ec0970377ac6f9c00e2eced1

Download Submit
memory/812-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-20-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2536-19-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2536-29-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2536-7-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-9-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-8-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-13-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-15-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-18-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-10-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2536-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-30-0x0000000000FB0000-0x0000000001340000-memory.dmp

Filesize
3.6MB

Download
memory/2636-3-0x0000000000440000-0x0000000000452000-memory.dmp

Filesize
72KB

Download
memory/2636-6-0x0000000005C20000-0x0000000005F88000-memory.dmp

Filesize
3.4MB

Download
memory/2636-0-0x000000007421E000-0x000000007421F000-memory.dmp

Filesize
4KB

Download
memory/2636-21-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2636-5-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2636-2-0x0000000074210000-0x00000000748FE000-memory.dmp

Filesize
6.9MB

Download
memory/2636-4-0x000000007421E000-0x000000007421F000-memory.dmp

Filesize
4KB

Download
memory/2636-1-0x0000000000C30000-0x0000000000FC0000-memory.dmp

Filesize
3.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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