quasar | 8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732

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

C2

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 1 IoCs

resource	yara_rule
behavioral2/memory/1368-2-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2104 set thread context of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.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
4248	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4248	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 2104 wrote to memory of 1368	2104	8e0d5671ea32cf623eff250232c51c26d17ecac3351a3b45e10fc042b827c732.exe	90
PID 1368 wrote to memory of 1520	1368	AppLaunch.exe	91
PID 1368 wrote to memory of 1520	1368	AppLaunch.exe	91
PID 1368 wrote to memory of 1520	1368	AppLaunch.exe	91
PID 1520 wrote to memory of 4696	1520	cmd.exe	93
PID 1520 wrote to memory of 4696	1520	cmd.exe	93
PID 1520 wrote to memory of 4696	1520	cmd.exe	93
PID 1520 wrote to memory of 4248	1520	cmd.exe	94
PID 1520 wrote to memory of 4248	1520	cmd.exe	94
PID 1520 wrote to memory of 4248	1520	cmd.exe	94
PID 1520 wrote to memory of 4712	1520	cmd.exe	96
PID 1520 wrote to memory of 4712	1520	cmd.exe	96
PID 1520 wrote to memory of 4712	1520	cmd.exe	96

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:2104
- 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:1368
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WyBppTE6JNb7.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1520
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:4696
  - - 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:4248
  - - 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:4712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\WyBppTE6JNb7.bat

Filesize
218B

MD5
ddf9ad64ac3d6dc8b5277d625a4493a0

SHA1
a67228049d1baadf25cb11fe86974101faffe3a6

SHA256
f4c29062f27a8719b74845e12cea93bed84181676a8b66adb16f2124a50ed2bb

SHA512
508c3747ae670f044a30130e34942d0b9d6a70d38a2818c5141bb0f7f754b4d2b590f39dcdb48a8b4656eb9736e8cece368f7136121ded2604975b780789b973

Download Submit
memory/1368-2-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1368-3-0x0000000074E7E000-0x0000000074E7F000-memory.dmp

Filesize
4KB

Download
memory/1368-4-0x00000000059A0000-0x0000000005F44000-memory.dmp

Filesize
5.6MB

Download
memory/1368-5-0x00000000052A0000-0x0000000005332000-memory.dmp

Filesize
584KB

Download
memory/1368-6-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download
memory/1368-7-0x0000000005350000-0x000000000535A000-memory.dmp

Filesize
40KB

Download
memory/1368-8-0x0000000006570000-0x0000000006B88000-memory.dmp

Filesize
6.1MB

Download
memory/1368-9-0x0000000005710000-0x0000000005760000-memory.dmp

Filesize
320KB

Download
memory/1368-10-0x0000000006030000-0x00000000060E2000-memory.dmp

Filesize
712KB

Download
memory/1368-15-0x0000000074E70000-0x0000000075620000-memory.dmp

Filesize
7.7MB

Download

Analysis

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