asyncrat | 3ec778942e2d803125fa551096a19a7f1e3cf0a9f513aa6633c96dd584dfe204

General

Target

Infected.exe
Size

63KB
MD5

f9caeabd873c3735af9b6bf7118d4955
SHA1

ce94b174c93e8716d5ea69cdffd8f83cc138c1cd
SHA256

3ec778942e2d803125fa551096a19a7f1e3cf0a9f513aa6633c96dd584dfe204
SHA512

12fdaa215362ef00d8258d3764d6bf0fe58241034f468d072fd748ac04cbc5df0c6fe5090ed1cdd7112af334ce47e9c881896c92761c7a3d5f12c0a2fc5b3dbc
SSDEEP

768:UURIVdHlA78rAC8A+XQaazcBRL5JTk1+T4KSBGHmDbD/ph0oXs0efLm3SuodpqKX:fwlgLdSJYUbdh9sxKiuodpqKmY7

Score

10^/10

asyncrat stealerium default collection discovery persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:8878

127.0.0.1:51852

born-me.gl.at.ply.gg:8878

born-me.gl.at.ply.gg:51852

Attributes

delay
1
install
true
install_file
1.exe
install_folder
%Temp%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0009000000024128-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Control Panel\International\Geo\Nation	Infected.exe

Executes dropped EXE 1 IoCs

pid	Process
392	1.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.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.

flow	ioc
76	icanhazip.com
78	ip-api.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
3496	cmd.exe
2408	netsh.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1168	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4100	schtasks.exe

Suspicious behavior: EnumeratesProcesses 45 IoCs

pid	Process
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
632	Infected.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe
392	1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	632	Infected.exe
Token: SeDebugPrivilege	392	1.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 632 wrote to memory of 4332	632	Infected.exe	89
PID 632 wrote to memory of 4332	632	Infected.exe	89
PID 632 wrote to memory of 3216	632	Infected.exe	91
PID 632 wrote to memory of 3216	632	Infected.exe	91
PID 4332 wrote to memory of 4100	4332	cmd.exe	93
PID 4332 wrote to memory of 4100	4332	cmd.exe	93
PID 3216 wrote to memory of 1168	3216	cmd.exe	94
PID 3216 wrote to memory of 1168	3216	cmd.exe	94
PID 3216 wrote to memory of 392	3216	cmd.exe	99
PID 3216 wrote to memory of 392	3216	cmd.exe	99
PID 392 wrote to memory of 3496	392	1.exe	113
PID 392 wrote to memory of 3496	392	1.exe	113
PID 3496 wrote to memory of 4956	3496	cmd.exe	115
PID 3496 wrote to memory of 4956	3496	cmd.exe	115
PID 3496 wrote to memory of 2408	3496	cmd.exe	116
PID 3496 wrote to memory of 2408	3496	cmd.exe	116
PID 3496 wrote to memory of 2152	3496	cmd.exe	117
PID 3496 wrote to memory of 2152	3496	cmd.exe	117
PID 392 wrote to memory of 4484	392	1.exe	118
PID 392 wrote to memory of 4484	392	1.exe	118
PID 4484 wrote to memory of 1612	4484	cmd.exe	120
PID 4484 wrote to memory of 1612	4484	cmd.exe	120
PID 4484 wrote to memory of 2004	4484	cmd.exe	121
PID 4484 wrote to memory of 2004	4484	cmd.exe	121

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

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-83325578-304917428-1200496059-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1.exe

C:\Users\Admin\AppData\Local\Temp\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:632
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "1" /tr '"C:\Users\Admin\AppData\Local\Temp\1.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "1" /tr '"C:\Users\Admin\AppData\Local\Temp\1.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4100
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp53CD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3216
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1168
- - C:\Users\Admin\AppData\Local\Temp\1.exe
    "C:\Users\Admin\AppData\Local\Temp\1.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    - outlook_office_path
    - outlook_win_path
    PID:392
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      4⤵
      System Network Configuration Discovery: Wi-Fi Discovery
      Suspicious use of WriteProcessMemory
      PID:3496
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:4956
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show profile
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:2408
    - - C:\Windows\system32\findstr.exe
        
        findstr All
        5⤵
        
        PID:2152
  - - C:\Windows\SYSTEM32\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4484
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:1612
    - - C:\Windows\system32\netsh.exe
        
        netsh wlan show networks mode=bssid
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        
        PID:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

3

T1082

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\760c63a83baacba6c2f27c7d96382396\Admin@ISKSVYMX_en-US\Browsers\Mozilla\Firefox\Bookmarks.txt

Filesize
81B

MD5
ea511fc534efd031f852fcf490b76104

SHA1
573e5fa397bc953df5422abbeb1a52bf94f7cf00

SHA256
e5fe7f327ae62df007bd1117aa7f522dbbcd371ec67953f66d786424cb1d7995

SHA512
f7d8e575a2332b0fbd491b5e092b7ed6b0942a5165557fcc5d215d873b05103aa6ba01843133871c1c7ac81b10182a15895be49885c98d1a379dd55f88004fae

Download Submit
C:\Users\Admin\AppData\Local\760c63a83baacba6c2f27c7d96382396\Admin@ISKSVYMX_en-US\System\Process.txt

Filesize
3KB

MD5
0270adde645bff1bef54407e1beca863

SHA1
0f14f56ec22bbdde989cbc74672eb359787c8a13

SHA256
5776427b7513f6f422f3eb3205124b223abd9721f7ce0900a9790818d88c158c

SHA512
037c668b51c91d9ee49af3c251cbb22f9415377acf30f9f2817c6d7a3d731448c1b355e0708671e5de557d4bd7d7cef37299ab0c919cd7209667a0a8e69ffb43

Download Submit
C:\Users\Admin\AppData\Local\760c63a83baacba6c2f27c7d96382396\Admin@ISKSVYMX_en-US\System\Process.txt

Filesize
4KB

MD5
3c8b00a561ebb0810a5518851145d99e

SHA1
e19afccc8b4073a3e1447cf562bf29ac1c40456d

SHA256
647d71932f8665f75325ad4a7479829b4364abdc90c193dd80e6667539289162

SHA512
11dd2a22574b4721bead8e6b4232c581495643c1ee5f03ec1f10b5a797b775b7a51c4dee8a4028bd5e4ffbb750cd622b1b0c0243fc37f89c72576c4866aa3f54

Download Submit
C:\Users\Admin\AppData\Local\760c63a83baacba6c2f27c7d96382396\Admin@ISKSVYMX_en-US\System\Process.txt

Filesize
2KB

MD5
0b734cab1f6295e67cb4c391dcd335e2

SHA1
ef1228d1449066482fc1c6f7e1e593c1377c9dd0

SHA256
eb239077e16a3be854645c408788f342109ee0e0592f63ebc563d5bf81253931

SHA512
507a2f2d4598238e8748e5f9a1db75ed9d3bec8005246955a62327355ee9f03838b7985ce619004779a4f96be56bfa7c9b62b63e3cb53124d2653eb395edd345

Download Submit
C:\Users\Admin\AppData\Local\Temp\1.exe

Filesize
63KB

MD5
f9caeabd873c3735af9b6bf7118d4955

SHA1
ce94b174c93e8716d5ea69cdffd8f83cc138c1cd

SHA256
3ec778942e2d803125fa551096a19a7f1e3cf0a9f513aa6633c96dd584dfe204

SHA512
12fdaa215362ef00d8258d3764d6bf0fe58241034f468d072fd748ac04cbc5df0c6fe5090ed1cdd7112af334ce47e9c881896c92761c7a3d5f12c0a2fc5b3dbc

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp53CD.tmp.bat

Filesize
148B

MD5
c2b472d28d9ca6c546c80cbdaca9b62f

SHA1
1a663a650c7573fdf86315dd2d35ee42b2f0a5f1

SHA256
654fba240635c208c016f448caa0b5f798370b0c7cca721d4b9a8dd0351a303d

SHA512
ac5ffa0f407d91d9a8b9ab07efb4f92b7e354d21ececd291024387d6983d1c8213c490944c78d2b8ba8d6184969bcb501fba0362e2d73e2b56ec21f122304d18

Download Submit
memory/392-24-0x0000000000B80000-0x0000000000B8A000-memory.dmp

Filesize
40KB

Download
memory/392-15-0x000000001CF20000-0x000000001CF96000-memory.dmp

Filesize
472KB

Download
memory/392-16-0x0000000000BD0000-0x0000000000C04000-memory.dmp

Filesize
208KB

Download
memory/392-17-0x0000000002630000-0x000000000264E000-memory.dmp

Filesize
120KB

Download
memory/392-18-0x000000001AE50000-0x000000001AE82000-memory.dmp

Filesize
200KB

Download
memory/392-19-0x000000001ED80000-0x000000001EF08000-memory.dmp

Filesize
1.5MB

Download
memory/392-175-0x000000001CD20000-0x000000001CD9A000-memory.dmp

Filesize
488KB

Download
memory/632-0-0x00007FFEC1343000-0x00007FFEC1345000-memory.dmp

Filesize
8KB

Download
memory/632-8-0x00007FFEC1340000-0x00007FFEC1E01000-memory.dmp

Filesize
10.8MB

Download
memory/632-3-0x00007FFEC1340000-0x00007FFEC1E01000-memory.dmp

Filesize
10.8MB

Download
memory/632-2-0x00007FFEC1340000-0x00007FFEC1E01000-memory.dmp

Filesize
10.8MB

Download
memory/632-1-0x0000000000010000-0x0000000000026000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads