quasar | 15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 12:23

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General

Target

15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe
Size

786KB
MD5

9c4894438cde81f24f332662f3c2aae0
SHA1

0f4da3fd7ff45e65a13cfbc4268be143f9e9d7dd
SHA256

15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909
SHA512

9448231e8619904ce115fd8b66488eef462f010dced19fc4ef2f327474b9019cac779e28b4fda2dda4cf8f0be4295b53014911831213a25eb925c9a555c1a30e
SSDEEP

12288:SBMYGfKGK1IisTAkFTw7Z5LnZfHKVN88r0o5+593ZBIop2Eg6oXHQSSjl1HU:SxI1MnZfHKw8Be3ZGx36oXw9l10

Score

10^/10

quasar office04 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

judicial.con-ip.com:53890

Mutex

cfa7b428-b778-4bda-8f78-8027f433ab1e

Attributes

encryption_key
BCB3D7E61EBFADA295CE4E370B5FC34D54533AA8
install_name
fdxfdx.exe
log_directory
Logs
reconnect_delay
3000
startup_key
fdxnvidia
subdirectory
SubDir

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2556-2-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/2556-4-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/2556-6-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29

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	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2488	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2488	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	AppLaunch.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe
2556	AppLaunch.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2592 wrote to memory of 2556	2592	15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe	29
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2556 wrote to memory of 2608	2556	AppLaunch.exe	30
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2444	2608	cmd.exe	32
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2488	2608	cmd.exe	33
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34
PID 2608 wrote to memory of 2208	2608	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe
"C:\Users\Admin\AppData\Local\Temp\15a67fe07697ed47c8307e23665050ae7959575266053f3161019e96fb7fc909N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2592
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2556
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\NvG9EpvsI4Uz.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2608
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2444
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2488
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\NvG9EpvsI4Uz.bat

Filesize
218B

MD5
a075b81096f62f90e1c0717524ebc1e4

SHA1
d76991e1f6d103396656111e420659da175c50c2

SHA256
30095dc5fb57f9ec3a4066152020164a9005a5e6758c5a839a615da5918538b3

SHA512
0609ae128a72ae4d684f08b5287bbca02c5b80903757b4822a2a507d417292d6dd7c67cbe839e50c18e13b009b246f5d0bda3b80aa70682e1ab6253ca4ddbb29

Download Submit
memory/2556-2-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2556-4-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2556-6-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2556-7-0x0000000074B2E000-0x0000000074B2F000-memory.dmp

Filesize
4KB

Download
memory/2556-8-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download
memory/2556-18-0x0000000074B20000-0x000000007520E000-memory.dmp

Filesize
6.9MB

Download