quasar | 12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b

General

Target

12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
Size

1.7MB
MD5

aba4aae2a1f0ab9149cce695d254782e
SHA1

41b5ef7a15aa23bbb43e4ca9349a87529bd6a49c
SHA256

12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b
SHA512

7ebb27e2b7ec50506421eecd95babb4ae8e1aef92eb0f79136ca29b0323d80c5a41b452fc05c9395097406d2413cd558e9bc02899247a4eda19f8da5931741a3
SSDEEP

24576:PUxJIRCRoenYQb6VOJ8Kgn1beVuumyEU:

Score

10^/10

quasar cio persistence spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Cio

C2

162.19.131.197:4782

Mutex

c5fdf017-8f44-47ea-a69e-0b82e4044ca7

Attributes

encryption_key
59A92039F951E5069C9F50FD9F340E759713B058
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 6 IoCs

resource	yara_rule
behavioral1/memory/784-65-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/784-66-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/784-67-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/784-68-0x000000000047E79E-mapping.dmp	family_quasar
behavioral1/memory/784-70-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar
behavioral1/memory/784-72-0x0000000000400000-0x0000000000484000-memory.dmp	family_quasar

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Jlnprgcxco = "\"C:\\Users\\Admin\\AppData\\Roaming\\Eqbuy\\Jlnprgcxco.exe\""	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 912 set thread context of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
1316	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
Token: SeDebugPrivilege	1316	powershell.exe
Token: SeDebugPrivilege	784	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
784	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 912 wrote to memory of 1316	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	28
PID 912 wrote to memory of 1316	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	28
PID 912 wrote to memory of 1316	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	28
PID 912 wrote to memory of 1316	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	28
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30
PID 912 wrote to memory of 784	912	12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe	30

C:\Users\Admin\AppData\Local\Temp\12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
"C:\Users\Admin\AppData\Local\Temp\12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:912
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1316
- C:\Users\Admin\AppData\Local\Temp\12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
  C:\Users\Admin\AppData\Local\Temp\12db007413571ceab4f4e4aecd5270f015b027a671c17efbc07db4967167b46b.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/784-67-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-65-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-72-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-70-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-66-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-62-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/784-63-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/912-55-0x0000000000D70000-0x0000000000E52000-memory.dmp

Filesize
904KB

Download
memory/912-54-0x0000000001020000-0x00000000011E0000-memory.dmp

Filesize
1.8MB

Download
memory/912-56-0x00000000048B0000-0x0000000004942000-memory.dmp

Filesize
584KB

Download
memory/1316-61-0x000000006F940000-0x000000006FEEB000-memory.dmp

Filesize
5.7MB

Download
memory/1316-60-0x000000006F940000-0x000000006FEEB000-memory.dmp

Filesize
5.7MB

Download
memory/1316-59-0x000000006F940000-0x000000006FEEB000-memory.dmp

Filesize
5.7MB

Download
memory/1316-58-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download

Analysis

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