asyncrat | fbb41333d4ca06cace9a9d040cc9c2a95a644a03298da9789def5f48e34f5515

Analysis

max time kernel
282s
max time network
297s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
17-07-2024 18:49

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General

Target

Ujuax.exe
Size

4.8MB
MD5

cc0586b98c46e5ed73efb1b0e9181130
SHA1

ff4a38d4acb50e4385727ef5455b77344b9b01c6
SHA256

b32f304e47735f05127ca24f7094514ef8b2b6d4d23c2b34a519ada6dc93b628
SHA512

2a8e5c1f6a449abe949b7e1fab291a1919bb80859648fd2bad50cf46964a3292db7f63663a4aa9f62993f3f85fb1e14fd05dfc68f9632e25f19a59bdf9e22468
SSDEEP

24576:D0cxDzNN+hJELofuY4e9fB03aZTtjck/aCbycRZxE7EiMdwTBHPJArTJnC03Ud1E:4cnk

Score

10^/10

asyncrat scar rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

Scar

scar77747.duckdns.org:6606

scar77747.duckdns.org:7707

scar77747.duckdns.org:8808

Mutex

Alx_alx

Attributes

delay
3
install
false
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 2 IoCs

rat

resource	yara_rule
behavioral4/memory/1928-4901-0x0000000005EB0000-0x0000000005EC6000-memory.dmp	family_asyncrat
behavioral4/memory/1868-9836-0x0000000005530000-0x0000000005546000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1868	Scar.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1884	ipconfig.exe
1036	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1480	powershell.exe
1480	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	Ujuax.exe
Token: SeDebugPrivilege	1928	Ujuax.exe
Token: SeDebugPrivilege	1480	powershell.exe
Token: SeDebugPrivilege	1868	Scar.exe
Token: SeDebugPrivilege	1868	Scar.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2172	1928	Ujuax.exe	82
PID 1928 wrote to memory of 2172	1928	Ujuax.exe	82
PID 1928 wrote to memory of 2172	1928	Ujuax.exe	82
PID 2172 wrote to memory of 1036	2172	cmd.exe	84
PID 2172 wrote to memory of 1036	2172	cmd.exe	84
PID 2172 wrote to memory of 1036	2172	cmd.exe	84
PID 1928 wrote to memory of 1480	1928	Ujuax.exe	91
PID 1928 wrote to memory of 1480	1928	Ujuax.exe	91
PID 1928 wrote to memory of 1480	1928	Ujuax.exe	91
PID 1868 wrote to memory of 4280	1868	Scar.exe	98
PID 1868 wrote to memory of 4280	1868	Scar.exe	98
PID 1868 wrote to memory of 4280	1868	Scar.exe	98
PID 4280 wrote to memory of 1884	4280	cmd.exe	100
PID 4280 wrote to memory of 1884	4280	cmd.exe	100
PID 4280 wrote to memory of 1884	4280	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\Ujuax.exe
"C:\Users\Admin\AppData\Local\Temp\Ujuax.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2172
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:1036
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc 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
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1480

C:\Users\Admin\AppData\Roaming\Scar.exe
C:\Users\Admin\AppData\Roaming\Scar.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4280
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:1884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5uughgsn.bss.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Scar.exe

Filesize
4.8MB

MD5
cc0586b98c46e5ed73efb1b0e9181130

SHA1
ff4a38d4acb50e4385727ef5455b77344b9b01c6

SHA256
b32f304e47735f05127ca24f7094514ef8b2b6d4d23c2b34a519ada6dc93b628

SHA512
2a8e5c1f6a449abe949b7e1fab291a1919bb80859648fd2bad50cf46964a3292db7f63663a4aa9f62993f3f85fb1e14fd05dfc68f9632e25f19a59bdf9e22468

Download Submit
memory/1480-4931-0x0000000007400000-0x00000000074A4000-memory.dmp

Filesize
656KB

Download
memory/1480-4905-0x0000000005D90000-0x0000000005DF6000-memory.dmp

Filesize
408KB

Download
memory/1480-4941-0x0000000007A70000-0x0000000007A78000-memory.dmp

Filesize
32KB

Download
memory/1480-4940-0x0000000007A80000-0x0000000007A9A000-memory.dmp

Filesize
104KB

Download
memory/1480-4939-0x0000000007980000-0x0000000007995000-memory.dmp

Filesize
84KB

Download
memory/1480-4938-0x0000000007970000-0x000000000797E000-memory.dmp

Filesize
56KB

Download
memory/1480-4937-0x0000000007940000-0x0000000007951000-memory.dmp

Filesize
68KB

Download
memory/1480-4936-0x00000000079C0000-0x0000000007A56000-memory.dmp

Filesize
600KB

Download
memory/1480-4935-0x00000000077B0000-0x00000000077BA000-memory.dmp

Filesize
40KB

Download
memory/1480-4934-0x0000000007730000-0x000000000774A000-memory.dmp

Filesize
104KB

Download
memory/1480-4933-0x0000000007D70000-0x00000000083EA000-memory.dmp

Filesize
6.5MB

Download
memory/1480-4932-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1480-4900-0x00000000056F0000-0x0000000005D1A000-memory.dmp

Filesize
6.2MB

Download
memory/1480-4944-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1480-4917-0x00000000063E0000-0x00000000063FE000-memory.dmp

Filesize
120KB

Download
memory/1480-4929-0x00000000069A0000-0x00000000069BE000-memory.dmp

Filesize
120KB

Download
memory/1480-4920-0x000000006F970000-0x000000006F9BC000-memory.dmp

Filesize
304KB

Download
memory/1480-4918-0x0000000006470000-0x00000000064BC000-memory.dmp

Filesize
304KB

Download
memory/1480-4930-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1480-4912-0x0000000005E00000-0x0000000006157000-memory.dmp

Filesize
3.3MB

Download
memory/1480-4916-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1480-4903-0x0000000005520000-0x0000000005542000-memory.dmp

Filesize
136KB

Download
memory/1480-4898-0x0000000004F90000-0x0000000004FC6000-memory.dmp

Filesize
216KB

Download
memory/1480-4906-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1480-4904-0x0000000005D20000-0x0000000005D86000-memory.dmp

Filesize
408KB

Download
memory/1480-4919-0x00000000073C0000-0x00000000073F4000-memory.dmp

Filesize
208KB

Download
memory/1480-4902-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1868-9836-0x0000000005530000-0x0000000005546000-memory.dmp

Filesize
88KB

Download
memory/1928-48-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-40-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-20-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-18-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-16-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-12-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-6-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-5-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-4891-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1928-4892-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1928-4893-0x0000000005F70000-0x0000000005FCE000-memory.dmp

Filesize
376KB

Download
memory/1928-4894-0x0000000005FD0000-0x000000000601C000-memory.dmp

Filesize
304KB

Download
memory/1928-4895-0x00000000744EE000-0x00000000744EF000-memory.dmp

Filesize
4KB

Download
memory/1928-4896-0x00000000744E0000-0x0000000074C91000-memory.dmp

Filesize
7.7MB

Download
memory/1928-4897-0x0000000005DD0000-0x0000000005E24000-memory.dmp

Filesize
336KB

Download
memory/1928-24-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-26-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-4901-0x0000000005EB0000-0x0000000005EC6000-memory.dmp

Filesize
88KB

Download
memory/1928-28-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-32-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-34-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-36-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-38-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-23-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-42-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-46-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-44-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-0-0x00000000744EE000-0x00000000744EF000-memory.dmp

Filesize
4KB

Download
memory/1928-50-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-52-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-54-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-58-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-60-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-64-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-66-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-68-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-62-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-56-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-30-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-14-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-8-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-10-0x0000000007000000-0x000000000721D000-memory.dmp

Filesize
2.1MB

Download
memory/1928-4-0x00000000072C0000-0x0000000007352000-memory.dmp

Filesize
584KB

Download
memory/1928-3-0x00000000077D0000-0x0000000007D76000-memory.dmp

Filesize
5.6MB

Download
memory/1928-4947-0x0000000007700000-0x000000000779C000-memory.dmp

Filesize
624KB

Download
memory/1928-2-0x0000000007000000-0x0000000007224000-memory.dmp

Filesize
2.1MB

Download
memory/1928-1-0x0000000000E20000-0x00000000012E8000-memory.dmp

Filesize
4.8MB

Download