quasar | e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52

General

Target

Seron.exe
Size

3.1MB
MD5

3d3c3272d41c20dd8a12826e75af36a9
SHA1

33f41b11b07bb5bfd07b6eefc1df6b898e1d052f
SHA256

e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52
SHA512

3700538f7796f5254c0c5ef7be1f43e117ad65af2836dc2d6ec5faaa99651b4796bab77b53118e5ce24032540a5674df7027709a762a305b6007c9126ca417ef
SSDEEP

49152:DvqlL26AaNeWgPhlmVqvMQ7XSKDS8wbR4LoGdzTHHB72eh2NT:DvSL26AaNeWgPhlmVqkQ7XSKDS83

Score

10^/10

quasar seron spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Seron

C2

a4hrb4kc9z-59858.portmap.host:59858

Mutex

2ac9af47-8868-455d-8ff0-aea73f3bb28f

Attributes

encryption_key
8BD9150EEC3DA71ED82080D7AEB7C165A58C889F
install_name
vn3gqb4ZDoPYX3.exe
log_directory
Logs
reconnect_delay
3000
startup_key
sKnqGpLs82z7bl
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/2488-1-0x00000000009D0000-0x0000000000CF4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000015d0e-6.dat	family_quasar
behavioral1/memory/2476-10-0x0000000000EA0000-0x00000000011C4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2476	vn3gqb4ZDoPYX3.exe

Drops file in Program Files directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	vn3gqb4ZDoPYX3.exe
File opened for modification	C:\Program Files\SubDir	vn3gqb4ZDoPYX3.exe
File created	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	Seron.exe
File opened for modification	C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe	Seron.exe
File opened for modification	C:\Program Files\SubDir	Seron.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
2248	schtasks.exe
2660	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2488	Seron.exe
Token: SeDebugPrivilege	2476	vn3gqb4ZDoPYX3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2476	vn3gqb4ZDoPYX3.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2248	2488	Seron.exe	31
PID 2488 wrote to memory of 2248	2488	Seron.exe	31
PID 2488 wrote to memory of 2248	2488	Seron.exe	31
PID 2488 wrote to memory of 2476	2488	Seron.exe	33
PID 2488 wrote to memory of 2476	2488	Seron.exe	33
PID 2488 wrote to memory of 2476	2488	Seron.exe	33
PID 2476 wrote to memory of 2660	2476	vn3gqb4ZDoPYX3.exe	34
PID 2476 wrote to memory of 2660	2476	vn3gqb4ZDoPYX3.exe	34
PID 2476 wrote to memory of 2660	2476	vn3gqb4ZDoPYX3.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\Seron.exe
"C:\Users\Admin\AppData\Local\Temp\Seron.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2488
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "sKnqGpLs82z7bl" /sc ONLOGON /tr "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2248
- C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe
  "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2476
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "sKnqGpLs82z7bl" /sc ONLOGON /tr "C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2660

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

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Downloads

C:\Program Files\SubDir\vn3gqb4ZDoPYX3.exe

Filesize
3.1MB

MD5
3d3c3272d41c20dd8a12826e75af36a9

SHA1
33f41b11b07bb5bfd07b6eefc1df6b898e1d052f

SHA256
e54a374dac36e9aa6ca9cfcb32b2828bdff03411259adddbbd3a032465843b52

SHA512
3700538f7796f5254c0c5ef7be1f43e117ad65af2836dc2d6ec5faaa99651b4796bab77b53118e5ce24032540a5674df7027709a762a305b6007c9126ca417ef

Download Submit
memory/2476-8-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2476-10-0x0000000000EA0000-0x00000000011C4000-memory.dmp

Filesize
3.1MB

Download
memory/2476-11-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2476-12-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x00000000009D0000-0x0000000000CF4000-memory.dmp

Filesize
3.1MB

Download
memory/2488-2-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-9-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads