quasar | d78baa99cdaa1c5037167f9a0b2f4aa65f694ac32af8c84d71e152542a970850

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2024 08:59

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General

Target

Zamówienie 89118 _ Metal-Constructions.pdf.exe
Size

3.9MB
MD5

00ffe69dfb698299710ce724102c38d0
SHA1

f34a894792a087ccc190149a60b5ebd778205254
SHA256

94ebfdfd713a28f05375cb3db05fa5223f67ef6d0e79d724c1d1fb808476227b
SHA512

21cc0557ccdc228d358430dc0783c55c3d4cc54ca48241ae212fa97e8d7cfc475fad1247ff7b967b3cdc5187984cd918736687c23cea84cddd2ca70c3ab2f37d
SSDEEP

98304:Amfx0pcD2HsO4ntgdgxkvS4qdtdFRm5J0j0BTh2zR:Amf2ppHb+koMSRtJpkQt

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 1 IoCs

resource	yara_rule
behavioral2/memory/1308-12-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
4924	workbook.exe
2380	workbook.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 4924 set thread context of 2380	4924	workbook.exe	107

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

description	ioc	Process
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.exe
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	workbook.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
4652	schtasks.exe
2584	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe
2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe
Token: SeDebugPrivilege	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe
Token: SeDebugPrivilege	2380	workbook.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2380	workbook.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 428	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	99
PID 2896 wrote to memory of 428	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	99
PID 2896 wrote to memory of 428	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	99
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 2896 wrote to memory of 1308	2896	Zamówienie 89118 _ Metal-Constructions.pdf.exe	100
PID 1308 wrote to memory of 2584	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	101
PID 1308 wrote to memory of 2584	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	101
PID 1308 wrote to memory of 2584	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	101
PID 1308 wrote to memory of 4924	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	103
PID 1308 wrote to memory of 4924	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	103
PID 1308 wrote to memory of 4924	1308	Zamówienie 89118 _ Metal-Constructions.pdf.exe	103
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 4924 wrote to memory of 2380	4924	workbook.exe	107
PID 2380 wrote to memory of 4652	2380	workbook.exe	108
PID 2380 wrote to memory of 4652	2380	workbook.exe	108
PID 2380 wrote to memory of 4652	2380	workbook.exe	108

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896
- 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⤵
  PID:428
- 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⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1308
- - 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:2584
- - 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:4924
  - - 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:2380
    - - 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:4652

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Zamówienie 89118 _ Metal-Constructions.pdf.exe.log

Filesize
1KB

MD5
b7b9acb869ccc7f7ecb5304ec0384dee

SHA1
6a90751c95817903ee833d59a0abbef425a613b3

SHA256
8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

SHA512
7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

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

Filesize
3.9MB

MD5
00ffe69dfb698299710ce724102c38d0

SHA1
f34a894792a087ccc190149a60b5ebd778205254

SHA256
94ebfdfd713a28f05375cb3db05fa5223f67ef6d0e79d724c1d1fb808476227b

SHA512
21cc0557ccdc228d358430dc0783c55c3d4cc54ca48241ae212fa97e8d7cfc475fad1247ff7b967b3cdc5187984cd918736687c23cea84cddd2ca70c3ab2f37d

Download Submit
memory/1308-12-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/1308-23-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1308-17-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1308-15-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/2380-34-0x0000000006690000-0x0000000006742000-memory.dmp

Filesize
712KB

Download
memory/2380-33-0x0000000006420000-0x0000000006470000-memory.dmp

Filesize
320KB

Download
memory/2380-32-0x0000000006880000-0x0000000006E98000-memory.dmp

Filesize
6.1MB

Download
memory/2896-5-0x0000000005D90000-0x0000000005D9A000-memory.dmp

Filesize
40KB

Download
memory/2896-3-0x0000000005C00000-0x0000000005C92000-memory.dmp

Filesize
584KB

Download
memory/2896-11-0x0000000008DB0000-0x0000000009118000-memory.dmp

Filesize
3.4MB

Download
memory/2896-9-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/2896-8-0x0000000005D80000-0x0000000005D92000-memory.dmp

Filesize
72KB

Download
memory/2896-7-0x0000000006000000-0x000000000609C000-memory.dmp

Filesize
624KB

Download
memory/2896-16-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/2896-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/2896-6-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/2896-10-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/2896-4-0x0000000006760000-0x0000000006AB4000-memory.dmp

Filesize
3.3MB

Download
memory/2896-1-0x0000000000E80000-0x000000000126C000-memory.dmp

Filesize
3.9MB

Download
memory/2896-2-0x00000000061B0000-0x0000000006754000-memory.dmp

Filesize
5.6MB

Download
memory/4924-24-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-31-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-27-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-26-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4924-25-0x0000000006010000-0x0000000006364000-memory.dmp

Filesize
3.3MB

Download