quasar | 8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732

Analysis

max time kernel
75s
max time network
32s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-01-2025 04:31

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General

Target

8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe
Size

787KB
MD5

4c8e8ac8d9ca4c1e6179eca7f222a757
SHA1

e621aababa1e434b214073f72608009c9ae0751d
SHA256

8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732
SHA512

f8083fd22458d88b068fd4672e5c33bb5c5ea8674f9f603f3f5f115d5b400a582145fb8297ca2e8c33c720a2c4fed4e8022cdc41e0caf26c7b4e07fbd95d954a
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/2320-2-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/2320-6-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/2320-4-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2348 set thread context of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31

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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AppLaunch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.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

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
2144	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2144	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2348 wrote to memory of 2320	2348	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	31
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2320 wrote to memory of 2656	2320	AppLaunch.exe	32
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2372	2656	cmd.exe	34
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2144	2656	cmd.exe	35
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36
PID 2656 wrote to memory of 2548	2656	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe
"C:\Users\Admin\AppData\Local\Temp\8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2348
- 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 WriteProcessMemory
  PID:2320
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\r3rAuDMej7Gn.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2656
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:2372
  - - 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:2144
  - - 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:2548

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\r3rAuDMej7Gn.bat

Filesize
218B

MD5
1cc5ff9c006708d1a22d3531201d6197

SHA1
2e03ac898f5681897a4b55a58316e71fdcb06cf8

SHA256
9603b49878a83f6f4e0783cbebc0e0999d33abdc8f31bdd210fd97ed815b1589

SHA512
ba301b78bf1579a7687eacd3ec2f3b3ef5b0d0cca60c4a06a710c1129e3bbc8e511e05eeb5f72a7821f305e731f5920faf84427a609ee5e92c6913f57b7e409f

Download Submit
memory/2320-2-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2320-6-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2320-4-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2320-7-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2320-8-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-18-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download