quasar | 5251e4fdc0598977d7fb7f23d24e1d6e552d109fec4edbae49189006a1e8ba01

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

b1d32c55a9fa7867f4c17a69b98ab938
SHA1

0afb54930a17369c274602d7500d4419f0d66a6b
SHA256

5251e4fdc0598977d7fb7f23d24e1d6e552d109fec4edbae49189006a1e8ba01
SHA512

cd89d57d9710ce543a03128834b683249979382886e4cfc131e41fa6ec92d9de2931bf593d332affe664ce8781ea2706c0e3a4fbe3f2e0e75bd0cf99ec28860c
SSDEEP

49152:+vCI22SsaNYfdPBldt698dBcjHG3/DBxjLoGdvXTHHB72eh2NT:+vP22SsaNYfdPBldt6+dBcjHG///

Score

10^/10

quasar svchost spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

cnet-considering.gl.at.ply.gg:5050

Mutex

a6f51a31-6052-48f4-9bc0-7acafa4802f5

Attributes

encryption_key
7AC4D01862AC71A180B8FAEE5694E9D7B88EF662
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
System32

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/2676-1-0x00000000008C0000-0x0000000000BE4000-memory.dmp	family_quasar
behavioral1/files/0x000c000000015dac-5.dat	family_quasar
behavioral1/memory/2128-7-0x0000000000AA0000-0x0000000000DC4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2128	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.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
2808	schtasks.exe
2764	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2128	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2764	2676	FlashingSoftwarePRO.exe	31
PID 2676 wrote to memory of 2764	2676	FlashingSoftwarePRO.exe	31
PID 2676 wrote to memory of 2764	2676	FlashingSoftwarePRO.exe	31
PID 2676 wrote to memory of 2128	2676	FlashingSoftwarePRO.exe	33
PID 2676 wrote to memory of 2128	2676	FlashingSoftwarePRO.exe	33
PID 2676 wrote to memory of 2128	2676	FlashingSoftwarePRO.exe	33
PID 2128 wrote to memory of 2808	2128	svchost.exe	34
PID 2128 wrote to memory of 2808	2128	svchost.exe	34
PID 2128 wrote to memory of 2808	2128	svchost.exe	34

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\FlashingSoftwarePRO.exe
"C:\Users\Admin\AppData\Local\Temp\FlashingSoftwarePRO.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2764
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2808

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

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\System32\System32\svchost.exe

Filesize
3.1MB

MD5
b1d32c55a9fa7867f4c17a69b98ab938

SHA1
0afb54930a17369c274602d7500d4419f0d66a6b

SHA256
5251e4fdc0598977d7fb7f23d24e1d6e552d109fec4edbae49189006a1e8ba01

SHA512
cd89d57d9710ce543a03128834b683249979382886e4cfc131e41fa6ec92d9de2931bf593d332affe664ce8781ea2706c0e3a4fbe3f2e0e75bd0cf99ec28860c

Download Submit
memory/2128-7-0x0000000000AA0000-0x0000000000DC4000-memory.dmp

Filesize
3.1MB

Download
memory/2128-9-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp

Filesize
9.9MB

Download
memory/2128-10-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp

Filesize
9.9MB

Download
memory/2128-11-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp

Filesize
9.9MB

Download
memory/2676-0-0x000007FEF51C3000-0x000007FEF51C4000-memory.dmp

Filesize
4KB

Download
memory/2676-1-0x00000000008C0000-0x0000000000BE4000-memory.dmp

Filesize
3.1MB

Download
memory/2676-2-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp

Filesize
9.9MB

Download
memory/2676-8-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads