quasar | 6008de3f1a1d175cc66844a23a4b07c7bf009c29dc6e81a96d7d0ed4658e4e64

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
12-11-2024 08:47

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General

Target

Zamówienie 89118 _ Metal-Constructions.pdf.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

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/2180-18-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2180-16-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2180-14-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2180-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2180-9-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 6 IoCs

Processes:

workbook.exeworkbook.exeworkbook.exeworkbook.exeworkbook.exeworkbook.exe

pid	Process
2344	workbook.exe
1960	workbook.exe
2136	workbook.exe
2656	workbook.exe
1824	workbook.exe
3004	workbook.exe

Loads dropped DLL 1 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.exe

pid	Process
2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Zamówienie 89118 _ Metal-Constructions.pdf.exe

description	pid	Process	procid_target
PID 1996 set thread context of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31

System Location Discovery: System Language Discovery 1 TTPs 4 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.exeschtasks.exeworkbook.exeZamówienie 89118 _ Metal-Constructions.pdf.exe

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

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
2820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

workbook.exe

pid	Process
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe
2344	workbook.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

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

description	pid	Process
Token: SeDebugPrivilege	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe
Token: SeDebugPrivilege	2344	workbook.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

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

description	pid	Process	procid_target
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 1996 wrote to memory of 2180	1996	Zamówienie 89118 _ Metal-Constructions.pdf.exe	31
PID 2180 wrote to memory of 2820	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	32
PID 2180 wrote to memory of 2820	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	32
PID 2180 wrote to memory of 2820	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	32
PID 2180 wrote to memory of 2820	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	32
PID 2180 wrote to memory of 2344	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	34
PID 2180 wrote to memory of 2344	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	34
PID 2180 wrote to memory of 2344	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	34
PID 2180 wrote to memory of 2344	2180	Zamówienie 89118 _ Metal-Constructions.pdf.exe	34
PID 2344 wrote to memory of 1960	2344	workbook.exe	35
PID 2344 wrote to memory of 1960	2344	workbook.exe	35
PID 2344 wrote to memory of 1960	2344	workbook.exe	35
PID 2344 wrote to memory of 1960	2344	workbook.exe	35
PID 2344 wrote to memory of 2136	2344	workbook.exe	36
PID 2344 wrote to memory of 2136	2344	workbook.exe	36
PID 2344 wrote to memory of 2136	2344	workbook.exe	36
PID 2344 wrote to memory of 2136	2344	workbook.exe	36
PID 2344 wrote to memory of 2656	2344	workbook.exe	37
PID 2344 wrote to memory of 2656	2344	workbook.exe	37
PID 2344 wrote to memory of 2656	2344	workbook.exe	37
PID 2344 wrote to memory of 2656	2344	workbook.exe	37
PID 2344 wrote to memory of 1824	2344	workbook.exe	38
PID 2344 wrote to memory of 1824	2344	workbook.exe	38
PID 2344 wrote to memory of 1824	2344	workbook.exe	38
PID 2344 wrote to memory of 1824	2344	workbook.exe	38
PID 2344 wrote to memory of 3004	2344	workbook.exe	39
PID 2344 wrote to memory of 3004	2344	workbook.exe	39
PID 2344 wrote to memory of 3004	2344	workbook.exe	39
PID 2344 wrote to memory of 3004	2344	workbook.exe	39

C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Zamówienie 89118 _ Metal-Constructions.pdf.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2180
- - 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:2820
- - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2344
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      PID:1960
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      PID:2136
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      PID:2656
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      PID:1824
  - - C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\workbook.exe"
      4⤵
      Executes dropped EXE
      PID:3004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

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/1996-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1996-1-0x00000000010B0000-0x0000000001440000-memory.dmp

Filesize
3.6MB

Download
memory/1996-2-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1996-3-0x00000000004B0000-0x00000000004C2000-memory.dmp

Filesize
72KB

Download
memory/1996-4-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1996-5-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1996-6-0x0000000005C10000-0x0000000005F78000-memory.dmp

Filesize
3.4MB

Download
memory/1996-20-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2180-16-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-18-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-14-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2180-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-9-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-19-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2180-7-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-21-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2180-8-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2180-29-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-30-0x0000000000130000-0x00000000004C0000-memory.dmp

Filesize
3.6MB

Download
memory/2344-31-0x00000000006A0000-0x00000000006B2000-memory.dmp

Filesize
72KB

Download