asyncrat | 6a307f1adf1b502d218dca101b9c9731fb44ffda5a4a2eb0de5c5120b380386b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01-05-2024 15:54

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General

Target

Infected.exe
Size

63KB
MD5

ad7b88bdcbeb87873c4fa8c164fd91bb
SHA1

4a248ffe2f4bd1d9570421f1aa892f9b2c69b0bf
SHA256

6a307f1adf1b502d218dca101b9c9731fb44ffda5a4a2eb0de5c5120b380386b
SHA512

2e7904e3a40be399af2d883c1a2982a23c67990597a77df83dfe1fd8dd05e5de918cb6573bbdb3261131f8b88163c82763d72758b644399d1e894426c1417c0e
SSDEEP

768:jnuguX1wbgyX78dIC8A+XkuazcBRL5JTk1+T4KSBGHmDbD/ph0oXN3p7JZuwSuEV:rvCCPTDdSJYUbdh9pp7JsuEdpqKmY7

Score

10^/10

asyncrat stealerium default collection rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

193.161.193.99:50291

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium
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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Infected.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Infected.exe
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Infected.exe
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Infected.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

58 ip-api.com
56 icanhazip.com
Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

flow	ioc
58	ip-api.com
56	icanhazip.com

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Infected.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Infected.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Infected.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

Infected.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	Infected.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	Infected.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

Infected.exe

pid	process
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe
5380	Infected.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Infected.exe

description pid process

Token: SeDebugPrivilege 5380 Infected.exe

description	pid	process
Token: SeDebugPrivilege	5380	Infected.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Infected.execmd.execmd.exe

description	pid	process	target process
PID 5380 wrote to memory of 68	5380	Infected.exe	cmd.exe
PID 5380 wrote to memory of 68	5380	Infected.exe	cmd.exe
PID 68 wrote to memory of 5064	68	cmd.exe	chcp.com
PID 68 wrote to memory of 5064	68	cmd.exe	chcp.com
PID 68 wrote to memory of 4600	68	cmd.exe	netsh.exe
PID 68 wrote to memory of 4600	68	cmd.exe	netsh.exe
PID 68 wrote to memory of 5988	68	cmd.exe	findstr.exe
PID 68 wrote to memory of 5988	68	cmd.exe	findstr.exe
PID 5380 wrote to memory of 5124	5380	Infected.exe	cmd.exe
PID 5380 wrote to memory of 5124	5380	Infected.exe	cmd.exe
PID 5124 wrote to memory of 4532	5124	cmd.exe	chcp.com
PID 5124 wrote to memory of 4532	5124	cmd.exe	chcp.com
PID 5124 wrote to memory of 3460	5124	cmd.exe	netsh.exe
PID 5124 wrote to memory of 3460	5124	cmd.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Infected.exe

description ioc process

Key opened \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Infected.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Infected.exe

outlook_win_path 1 IoCs

Processes:

Infected.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Infected.exe

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:5380

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
2⤵
- Suspicious use of WriteProcessMemory
PID:68

C:\Windows\system32\chcp.com
chcp 65001
3⤵
PID:5064

C:\Windows\system32\netsh.exe
netsh wlan show profile
3⤵
PID:4600

C:\Windows\system32\findstr.exe
findstr All
3⤵
PID:5988

C:\Windows\SYSTEM32\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
2⤵
- Suspicious use of WriteProcessMemory
PID:5124

C:\Windows\system32\chcp.com
chcp 65001
3⤵
PID:4532

C:\Windows\system32\netsh.exe
netsh wlan show networks mode=bssid
3⤵
PID:3460

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\64a445384ed8259e6ef178a00d59628a\Admin@RHATQEDQ_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt
Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\64a445384ed8259e6ef178a00d59628a\Admin@RHATQEDQ_en-US\System\Process.txt
Filesize
4KB

MD5
cd9981db6f1fa558813787674ebf2eac

SHA1
9dd84159d3bc324796331139a84cb0fdce25f08a

SHA256
269b6c0bd30401829ab9cefcea33e203a36da44cdc54b2614eb4f8f65239aa9c

SHA512
a1bd9b26de1aa3a90f65e62908c29acc832f1fcb983e1971567811686fcea2724b8fed2874131b49cb42678f16451c4edd370bda61cdbe46aeb154371a254121

Download Submit
memory/5380-5-0x000000001CBA0000-0x000000001CBBE000-memory.dmp

Filesize
120KB

Download
memory/5380-11-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-4-0x000000001CB70000-0x000000001CBA4000-memory.dmp

Filesize
208KB

Download
memory/5380-1-0x00007FF990903000-0x00007FF990905000-memory.dmp

Filesize
8KB

Download
memory/5380-6-0x00007FF990903000-0x00007FF990905000-memory.dmp

Filesize
8KB

Download
memory/5380-7-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-8-0x000000001CCA0000-0x000000001CCD2000-memory.dmp

Filesize
200KB

Download
memory/5380-9-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-10-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-3-0x000000001CBF0000-0x000000001CC66000-memory.dmp

Filesize
472KB

Download
memory/5380-12-0x0000000000970000-0x000000000098C000-memory.dmp

Filesize
112KB

Download
memory/5380-13-0x000000001DCD0000-0x000000001DE58000-memory.dmp

Filesize
1.5MB

Download
memory/5380-18-0x0000000000A00000-0x0000000000A0A000-memory.dmp

Filesize
40KB

Download
memory/5380-2-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-151-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-159-0x00007FF990900000-0x00007FF9913C1000-memory.dmp

Filesize
10.8MB

Download
memory/5380-164-0x000000001C630000-0x000000001C6AA000-memory.dmp

Filesize
488KB

Download
memory/5380-0-0x0000000000220000-0x0000000000236000-memory.dmp

Filesize
88KB

Download
memory/5380-199-0x00000000007F0000-0x000000000080C000-memory.dmp

Filesize
112KB

Download