quasar | 828b9961731797b0a487f095d9980d3771599eb54feab35d1e856b925558e61a

General

Target

Seron_protected.exe
Size

2.3MB
MD5

a1e7539d32cd463c86540e00607e274b
SHA1

537b182c080ddd6fa8e89b31d67297abf7aef554
SHA256

828b9961731797b0a487f095d9980d3771599eb54feab35d1e856b925558e61a
SHA512

33c8ff00732e04a360c57aef401467f54a649563c5820c81c19b5de1607102bd9c29c65ca4f8c914885a0031b0c415339efa01122fbda58e17d8ff632d48b567
SSDEEP

49152:M55We0VQ+028J5gyUjjp5bCt7S275L6MP/J2H76gYSt98H9Y08ChNB/n:M55We0VCN6jjp5bC5Ft6MX4H76XStCdz

Score

10^/10

quasar seron discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Seron

C2

nigeboc465-58875.portmap.host:58875

Mutex

eb8602ec-8a0d-4322-b9a0-544571be5a2d

Attributes

encryption_key
8BD9150EEC3DA71ED82080D7AEB7C165A58C889F
install_name
f8mk7ZGwVUpulm.exe
log_directory
Logs
reconnect_delay
3000
startup_key
f8mk7ZGwVUpulm
subdirectory
SubDir

Signatures

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

Quasar payload 5 IoCs

resource	yara_rule
behavioral2/memory/5348-12-0x0000000000380000-0x0000000000A54000-memory.dmp	family_quasar
behavioral2/memory/5348-25-0x0000000000380000-0x0000000000A54000-memory.dmp	family_quasar
behavioral2/memory/1924-32-0x0000000000C60000-0x0000000001334000-memory.dmp	family_quasar
behavioral2/memory/1924-29-0x0000000000C60000-0x0000000001334000-memory.dmp	family_quasar
behavioral2/memory/1924-34-0x0000000000C60000-0x0000000001334000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1924	f8mk7ZGwVUpulm.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5348	Seron_protected.exe
1924	f8mk7ZGwVUpulm.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Seron_protected.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8mk7ZGwVUpulm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
5984	schtasks.exe
740	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5348	Seron_protected.exe
Token: SeDebugPrivilege	1924	f8mk7ZGwVUpulm.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5348	Seron_protected.exe
1924	f8mk7ZGwVUpulm.exe
1924	f8mk7ZGwVUpulm.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5348 wrote to memory of 5984	5348	Seron_protected.exe	77
PID 5348 wrote to memory of 5984	5348	Seron_protected.exe	77
PID 5348 wrote to memory of 5984	5348	Seron_protected.exe	77
PID 5348 wrote to memory of 1924	5348	Seron_protected.exe	79
PID 5348 wrote to memory of 1924	5348	Seron_protected.exe	79
PID 5348 wrote to memory of 1924	5348	Seron_protected.exe	79
PID 1924 wrote to memory of 740	1924	f8mk7ZGwVUpulm.exe	80
PID 1924 wrote to memory of 740	1924	f8mk7ZGwVUpulm.exe	80
PID 1924 wrote to memory of 740	1924	f8mk7ZGwVUpulm.exe	80

C:\Users\Admin\AppData\Local\Temp\Seron_protected.exe
"C:\Users\Admin\AppData\Local\Temp\Seron_protected.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5348
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "f8mk7ZGwVUpulm" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:5984
- C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "f8mk7ZGwVUpulm" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\f8mk7ZGwVUpulm.exe

Filesize
2.3MB

MD5
a1e7539d32cd463c86540e00607e274b

SHA1
537b182c080ddd6fa8e89b31d67297abf7aef554

SHA256
828b9961731797b0a487f095d9980d3771599eb54feab35d1e856b925558e61a

SHA512
33c8ff00732e04a360c57aef401467f54a649563c5820c81c19b5de1607102bd9c29c65ca4f8c914885a0031b0c415339efa01122fbda58e17d8ff632d48b567

Download Submit
memory/1924-33-0x0000000074060000-0x0000000074811000-memory.dmp

Filesize
7.7MB

Download
memory/1924-30-0x0000000077874000-0x0000000077875000-memory.dmp

Filesize
4KB

Download
memory/1924-40-0x000000000B970000-0x000000000B982000-memory.dmp

Filesize
72KB

Download
memory/1924-37-0x000000000A420000-0x000000000A4D2000-memory.dmp

Filesize
712KB

Download
memory/1924-36-0x000000000A1B0000-0x000000000A200000-memory.dmp

Filesize
320KB

Download
memory/1924-35-0x000000000A700000-0x000000000AD18000-memory.dmp

Filesize
6.1MB

Download
memory/1924-41-0x000000000B9D0000-0x000000000BA0C000-memory.dmp

Filesize
240KB

Download
memory/1924-32-0x0000000000C60000-0x0000000001334000-memory.dmp

Filesize
6.8MB

Download
memory/1924-34-0x0000000000C60000-0x0000000001334000-memory.dmp

Filesize
6.8MB

Download
memory/1924-42-0x000000000BA80000-0x000000000BAE6000-memory.dmp

Filesize
408KB

Download
memory/1924-22-0x0000000000C60000-0x0000000001334000-memory.dmp

Filesize
6.8MB

Download
memory/1924-31-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/1924-26-0x0000000001AF0000-0x0000000001AF1000-memory.dmp

Filesize
4KB

Download
memory/1924-29-0x0000000000C60000-0x0000000001334000-memory.dmp

Filesize
6.8MB

Download
memory/1924-28-0x0000000000C60000-0x0000000001334000-memory.dmp

Filesize
6.8MB

Download
memory/5348-14-0x0000000009060000-0x00000000090F2000-memory.dmp

Filesize
584KB

Download
memory/5348-27-0x0000000074060000-0x0000000074811000-memory.dmp

Filesize
7.7MB

Download
memory/5348-25-0x0000000000380000-0x0000000000A54000-memory.dmp

Filesize
6.8MB

Download
memory/5348-16-0x0000000008FA0000-0x0000000008FAA000-memory.dmp

Filesize
40KB

Download
memory/5348-15-0x0000000074060000-0x0000000074811000-memory.dmp

Filesize
7.7MB

Download
memory/5348-0-0x0000000000380000-0x0000000000A54000-memory.dmp

Filesize
6.8MB

Download
memory/5348-13-0x0000000009490000-0x0000000009A36000-memory.dmp

Filesize
5.6MB

Download
memory/5348-12-0x0000000000380000-0x0000000000A54000-memory.dmp

Filesize
6.8MB

Download
memory/5348-11-0x000000007406E000-0x000000007406F000-memory.dmp

Filesize
4KB

Download
memory/5348-10-0x0000000077874000-0x0000000077875000-memory.dmp

Filesize
4KB

Download
memory/5348-2-0x0000000000380000-0x0000000000A54000-memory.dmp

Filesize
6.8MB

Download
memory/5348-1-0x00000000034C0000-0x00000000034C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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