asyncrat | a160b40dc1a11db87551502bcceab7b4bf8004ca1fc55f4644dcf02641b1844c

Analysis

max time kernel
56s
max time network
58s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
14/06/2024, 16:59

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Reason

Machine shutdown

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General

Target

ScythDox.exe
Size

47KB
MD5

06967a51ed6887c2bce5445e5f9ab039
SHA1

94d4ec13dd59fece5fd933cf1b0749313cb118ac
SHA256

a160b40dc1a11db87551502bcceab7b4bf8004ca1fc55f4644dcf02641b1844c
SHA512

75af9d504ac5b7769d1e54bafe36579cb9ecf07a52b301c35052ccba969e7a1db2140a2b110f755feaf7e45f1e75b55f5ba51314dae475a8c61566ed923091c5
SSDEEP

768:oZztILg+kM+bihtelDSN+iV08YbygebhM0vEgK/JXZVc6KN:oZP0htKDs4zb1ShtnkJXZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

127.0.0.1:8848

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
Doxxister!.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral3/files/0x000200000002a9d6-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1792	Doxxister!.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4496	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4860	timeout.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "191"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	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\ColorizationAfterglow = "3288365268"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
4796	ScythDox.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe
1792	Doxxister!.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4796	ScythDox.exe
Token: SeDebugPrivilege	1792	Doxxister!.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2288	LogonUI.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 4184	4796	ScythDox.exe	80
PID 4796 wrote to memory of 4184	4796	ScythDox.exe	80
PID 4796 wrote to memory of 904	4796	ScythDox.exe	82
PID 4796 wrote to memory of 904	4796	ScythDox.exe	82
PID 4184 wrote to memory of 4496	4184	cmd.exe	84
PID 4184 wrote to memory of 4496	4184	cmd.exe	84
PID 904 wrote to memory of 4860	904	cmd.exe	85
PID 904 wrote to memory of 4860	904	cmd.exe	85
PID 904 wrote to memory of 1792	904	cmd.exe	86
PID 904 wrote to memory of 1792	904	cmd.exe	86

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\ScythDox.exe
"C:\Users\Admin\AppData\Local\Temp\ScythDox.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Doxxister!" /tr '"C:\Users\Admin\AppData\Roaming\Doxxister!.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4184
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Doxxister!" /tr '"C:\Users\Admin\AppData\Roaming\Doxxister!.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:4496
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7C83.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4860
- - C:\Users\Admin\AppData\Roaming\Doxxister!.exe
    "C:\Users\Admin\AppData\Roaming\Doxxister!.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1792

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39bd055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7C83.tmp.bat

Filesize
154B

MD5
c38084dc221d2a6ea67a86839d05f29f

SHA1
0198e4f96c99e2f91b77447166f54e6c670aeca0

SHA256
7eef8667ed4ea238bef93b7ef924872f653a922416003563b365361a46cffc58

SHA512
a020be627cd42586c853de76d4e6d40e78e82770dd61564c50d9b516e08df39400785a8c18c09ee404faed956e295e120f82b58bab1573183374fd66ae969cac

Download Submit
C:\Users\Admin\AppData\Roaming\Doxxister!.exe

Filesize
47KB

MD5
06967a51ed6887c2bce5445e5f9ab039

SHA1
94d4ec13dd59fece5fd933cf1b0749313cb118ac

SHA256
a160b40dc1a11db87551502bcceab7b4bf8004ca1fc55f4644dcf02641b1844c

SHA512
75af9d504ac5b7769d1e54bafe36579cb9ecf07a52b301c35052ccba969e7a1db2140a2b110f755feaf7e45f1e75b55f5ba51314dae475a8c61566ed923091c5

Download Submit
memory/4796-1-0x00007FFF96EB3000-0x00007FFF96EB5000-memory.dmp

Filesize
8KB

Download
memory/4796-0-0x0000000000FB0000-0x0000000000FC2000-memory.dmp

Filesize
72KB

Download
memory/4796-2-0x00007FFF96EB0000-0x00007FFF97972000-memory.dmp

Filesize
10.8MB

Download
memory/4796-8-0x00007FFF96EB0000-0x00007FFF97972000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads