quasar | 3ecb28af0fe4d7a3ef6fafc0569f53fa737d2c5dca49730ff33ae11266ee157d

General

Target

SolaraSpooferv5.exe
Size

3.1MB
MD5

b6c53afca6be00fa7760ee1af48ce8da
SHA1

1d99e96bcadf2e02ca78915708cd60b64d4a15d3
SHA256

3ecb28af0fe4d7a3ef6fafc0569f53fa737d2c5dca49730ff33ae11266ee157d
SHA512

4cf67f8e846788f4cce050e77267bda7b303edea52f878bde28e58bc065b43917e74f87a26c9b66d751a0a7da925adfbc788540e5ec1981a200d9b0e1cd4924c
SSDEEP

49152:jv8lL26AaNeWgPhlmVqvMQ7XSKq4mFmz4LoGdDTHHB72eh2NT:jvsL26AaNeWgPhlmVqkQ7XSKq4mn

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.110:4782

Mutex

305720bb-a77a-4a7f-bf78-3909eb625683

Attributes

encryption_key
43E9A55589BB4A34A5EA0C5AA34EE82318BB46C3
install_name
SolaraSpooferv5.exe
log_directory
Logs
reconnect_delay
0
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

resource	yara_rule
behavioral1/memory/1064-1-0x00000000001B0000-0x00000000004D4000-memory.dmp	family_quasar
behavioral1/files/0x0007000000023c8d-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3332	SolaraSpooferv5.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
4728	schtasks.exe
3060	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3520	vlc.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3520	vlc.exe
3332	SolaraSpooferv5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	SolaraSpooferv5.exe
Token: SeDebugPrivilege	3332	SolaraSpooferv5.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
3520	vlc.exe
3520	vlc.exe
3520	vlc.exe
3520	vlc.exe
3520	vlc.exe
3520	vlc.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3520	vlc.exe
3520	vlc.exe
3520	vlc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3332	SolaraSpooferv5.exe
3520	vlc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1064 wrote to memory of 4728	1064	SolaraSpooferv5.exe	86
PID 1064 wrote to memory of 4728	1064	SolaraSpooferv5.exe	86
PID 1064 wrote to memory of 3332	1064	SolaraSpooferv5.exe	88
PID 1064 wrote to memory of 3332	1064	SolaraSpooferv5.exe	88
PID 3332 wrote to memory of 3060	3332	SolaraSpooferv5.exe	91
PID 3332 wrote to memory of 3060	3332	SolaraSpooferv5.exe	91

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\SolaraSpooferv5.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraSpooferv5.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraSpooferv5.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4728
- C:\Users\Admin\AppData\Roaming\SubDir\SolaraSpooferv5.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\SolaraSpooferv5.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3332
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\SolaraSpooferv5.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3060

C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SaveProtect.wma"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
PID:3520

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\.txt
1⤵
PID:4068

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\SolaraSpooferv5.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\SolaraSpooferv5.exe

Filesize
3.1MB

MD5
b6c53afca6be00fa7760ee1af48ce8da

SHA1
1d99e96bcadf2e02ca78915708cd60b64d4a15d3

SHA256
3ecb28af0fe4d7a3ef6fafc0569f53fa737d2c5dca49730ff33ae11266ee157d

SHA512
4cf67f8e846788f4cce050e77267bda7b303edea52f878bde28e58bc065b43917e74f87a26c9b66d751a0a7da925adfbc788540e5ec1981a200d9b0e1cd4924c

Download Submit
memory/1064-0-0x00007FFCF2A03000-0x00007FFCF2A05000-memory.dmp

Filesize
8KB

Download
memory/1064-1-0x00000000001B0000-0x00000000004D4000-memory.dmp

Filesize
3.1MB

Download
memory/1064-2-0x00007FFCF2A00000-0x00007FFCF34C1000-memory.dmp

Filesize
10.8MB

Download
memory/1064-10-0x00007FFCF2A00000-0x00007FFCF34C1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-13-0x000000001BD90000-0x000000001BDE0000-memory.dmp

Filesize
320KB

Download
memory/3332-12-0x00007FFCF2A00000-0x00007FFCF34C1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-11-0x00007FFCF2A00000-0x00007FFCF34C1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-14-0x000000001BEA0000-0x000000001BF52000-memory.dmp

Filesize
712KB

Download
memory/3332-15-0x00007FFCF2A00000-0x00007FFCF34C1000-memory.dmp

Filesize
10.8MB

Download
memory/3332-16-0x000000001C800000-0x000000001CD28000-memory.dmp

Filesize
5.2MB

Download
memory/3520-25-0x00007FFCF39C0000-0x00007FFCF39F4000-memory.dmp

Filesize
208KB

Download
memory/3520-24-0x00007FF6E8090000-0x00007FF6E8188000-memory.dmp

Filesize
992KB

Download
memory/3520-26-0x00007FFCEB660000-0x00007FFCEB916000-memory.dmp

Filesize
2.7MB

Download
memory/3520-27-0x00007FFCE4C50000-0x00007FFCE5D00000-memory.dmp

Filesize
16.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads