quasar | e8156e44befb5335f9c18acdd0d428c3a8fa316546a71fbbbd2c64c08f697a3e

Reason

Machine shutdown

General

Target

RegEdit.exe
Size

3.1MB
MD5

bfacb0c11a720d61c03412d7f68fb8df
SHA1

06c5304b3d6d75734ae3f8f30c9486dd855f0335
SHA256

e8156e44befb5335f9c18acdd0d428c3a8fa316546a71fbbbd2c64c08f697a3e
SHA512

89a8dcf157e7b390f946925273d34c3f6bf2cdef62e2908f96ceb64e4dbd12d5cb353c7b0e2a37ff59187dd33d3c95ab640295c433ff8e4df760baca3a127cda
SSDEEP

49152:uvHI22SsaNYfdPBldt698dBcjHqEFlymzknoGd9UTHHB72eh2NT:uvo22SsaNYfdPBldt6+dBcjHqEFlE

Score

10^/10

quasar dumby bo got ratted lolol spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

dumby bo got ratted LOLOL

C2

p-surplus.gl.at.ply.gg:7938

Mutex

6f229673-e6d0-41b5-a1e4-1cbc29eeffd8

Attributes

encryption_key
84EEFDB37698E582E7732B4568EC490426D1D6DF
install_name
d1aler.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Java updater
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4380-1-0x0000000000C40000-0x0000000000F64000-memory.dmp	family_quasar
behavioral1/files/0x00280000000450e9-3.dat	family_quasar

Executes dropped EXE 1 IoCs

Processes:

d1aler.exe

pid	Process
228	d1aler.exe

Drops file in System32 directory 5 IoCs

Processes:

RegEdit.exed1aler.exe

description	ioc	Process
File created	C:\Windows\system32\SubDir\d1aler.exe	RegEdit.exe
File opened for modification	C:\Windows\system32\SubDir\d1aler.exe	RegEdit.exe
File opened for modification	C:\Windows\system32\SubDir	RegEdit.exe
File opened for modification	C:\Windows\system32\SubDir\d1aler.exe	d1aler.exe
File opened for modification	C:\Windows\system32\SubDir	d1aler.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "70"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe

Runs regedit.exe 1 IoCs

Processes:

RegEdit.exe

pid	Process
4380	RegEdit.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

Processes:

schtasks.exeschtasks.exe

pid	Process
2412	schtasks.exe
4768	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegEdit.exed1aler.exe

description	pid	Process
Token: SeDebugPrivilege	4380	RegEdit.exe
Token: SeDebugPrivilege	228	d1aler.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

d1aler.exe

pid	Process
228	d1aler.exe
228	d1aler.exe
228	d1aler.exe
228	d1aler.exe

Suspicious use of SendNotifyMessage 4 IoCs

Processes:

d1aler.exe

pid	Process
228	d1aler.exe
228	d1aler.exe
228	d1aler.exe
228	d1aler.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

d1aler.exeLogonUI.exe

pid	Process
228	d1aler.exe
2272	LogonUI.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

RegEdit.exed1aler.exe

description	pid	Process	procid_target
PID 4380 wrote to memory of 2412	4380	RegEdit.exe	80
PID 4380 wrote to memory of 2412	4380	RegEdit.exe	80
PID 4380 wrote to memory of 228	4380	RegEdit.exe	82
PID 4380 wrote to memory of 228	4380	RegEdit.exe	82
PID 228 wrote to memory of 4768	228	d1aler.exe	83
PID 228 wrote to memory of 4768	228	d1aler.exe	83

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\RegEdit.exe
"C:\Users\Admin\AppData\Local\Temp\RegEdit.exe"
1⤵
- Drops file in System32 directory
- Runs regedit.exe
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Java updater" /sc ONLOGON /tr "C:\Windows\system32\SubDir\d1aler.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2412
- C:\Windows\system32\SubDir\d1aler.exe
  "C:\Windows\system32\SubDir\d1aler.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Java updater" /sc ONLOGON /tr "C:\Windows\system32\SubDir\d1aler.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4768

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3a1c055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2272

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\System32\SubDir\d1aler.exe

Filesize
3.1MB

MD5
bfacb0c11a720d61c03412d7f68fb8df

SHA1
06c5304b3d6d75734ae3f8f30c9486dd855f0335

SHA256
e8156e44befb5335f9c18acdd0d428c3a8fa316546a71fbbbd2c64c08f697a3e

SHA512
89a8dcf157e7b390f946925273d34c3f6bf2cdef62e2908f96ceb64e4dbd12d5cb353c7b0e2a37ff59187dd33d3c95ab640295c433ff8e4df760baca3a127cda

Download Submit
memory/228-7-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/228-6-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/228-8-0x000000001D890000-0x000000001D8E0000-memory.dmp

Filesize
320KB

Download
memory/228-9-0x000000001D9A0000-0x000000001DA52000-memory.dmp

Filesize
712KB

Download
memory/228-12-0x000000001D920000-0x000000001D932000-memory.dmp

Filesize
72KB

Download
memory/228-13-0x000000001E1A0000-0x000000001E1DC000-memory.dmp

Filesize
240KB

Download
memory/228-14-0x000000001E710000-0x000000001EC38000-memory.dmp

Filesize
5.2MB

Download
memory/228-15-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/228-21-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/4380-2-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/4380-1-0x0000000000C40000-0x0000000000F64000-memory.dmp

Filesize
3.1MB

Download
memory/4380-5-0x00007FFCF3540000-0x00007FFCF4002000-memory.dmp

Filesize
10.8MB

Download
memory/4380-0-0x00007FFCF3543000-0x00007FFCF3545000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads