asyncrat | a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37

General

Target

a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
Size

170KB
MD5

1a0e44c80f16e988fff63e68ef3b5fe7
SHA1

014856e04597f480ff749bc3db8b06214acdaf6b
SHA256

a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37
SHA512

9d657943e86905bf22ca3c76e373bddf187ddddb84465fb50af4da9887920e9cacf17f91b0960d751c0ff99b1c282682f6d1d327d27dcfbb7aa9bb6d70b90144
SSDEEP

3072:++STW8djpN6izj8mZwdJqutB+YDpqIPu/i9bVK2cN/eU6+Wp7:j8XN6W8mmHPtppXPSi9b4D/

Score

10^/10

asyncrat stormkitty default discovery persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot8106600591:AAFkNO73MtTmQuvi4fBDGE7hd2H7FNOw8eg/sendMessage?chat_id=6355289079

Mutex

AsyncMutex_6SI8OkPnk

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
Asyncrat family
asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/4052-1-0x00000000008E0000-0x0000000000910000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
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

Drops desktop.ini file(s) 9 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File opened for modification	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File opened for modification	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File created	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
File opened for modification	C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	icanhazip.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

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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com

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
3036	cmd.exe
5176	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	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4052 wrote to memory of 3036	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	79
PID 4052 wrote to memory of 3036	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	79
PID 4052 wrote to memory of 3036	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	79
PID 3036 wrote to memory of 5472	3036	cmd.exe	81
PID 3036 wrote to memory of 5472	3036	cmd.exe	81
PID 3036 wrote to memory of 5472	3036	cmd.exe	81
PID 3036 wrote to memory of 5176	3036	cmd.exe	82
PID 3036 wrote to memory of 5176	3036	cmd.exe	82
PID 3036 wrote to memory of 5176	3036	cmd.exe	82
PID 3036 wrote to memory of 1676	3036	cmd.exe	83
PID 3036 wrote to memory of 1676	3036	cmd.exe	83
PID 3036 wrote to memory of 1676	3036	cmd.exe	83
PID 4052 wrote to memory of 5112	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	84
PID 4052 wrote to memory of 5112	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	84
PID 4052 wrote to memory of 5112	4052	a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe	84
PID 5112 wrote to memory of 3444	5112	cmd.exe	86
PID 5112 wrote to memory of 3444	5112	cmd.exe	86
PID 5112 wrote to memory of 3444	5112	cmd.exe	86
PID 5112 wrote to memory of 3384	5112	cmd.exe	87
PID 5112 wrote to memory of 3384	5112	cmd.exe	87
PID 5112 wrote to memory of 3384	5112	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe
"C:\Users\Admin\AppData\Local\Temp\a3c821a3e92efe77dfedd22a9628c8bc8db37618b1d0f4cd55ea881136585a37.exe"
1⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:3036
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5472
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:5176
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1676
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5112
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3444
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3384

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\15d4d109af221217140504be2cb96263\msgid.dat

Filesize
2B

MD5
7cbbc409ec990f19c78c75bd1e06f215

SHA1
b7103ca278a75cad8f7d065acda0c2e80da0b7dc

SHA256
ff5a1ae012afa5d4c889c50ad427aaf545d31a4fac04ffc1c4d03d403ba4250a

SHA512
c386662ba940c3dab369a16cc66bbfac61d14f0ffb789270a93cab315e7a297fa8765c105b3c735f509973e4771f5fa1a50ecf6e216d57715a044b662e59265b

Download Submit
C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
81B

MD5
ea511fc534efd031f852fcf490b76104

SHA1
573e5fa397bc953df5422abbeb1a52bf94f7cf00

SHA256
e5fe7f327ae62df007bd1117aa7f522dbbcd371ec67953f66d786424cb1d7995

SHA512
f7d8e575a2332b0fbd491b5e092b7ed6b0942a5165557fcc5d215d873b05103aa6ba01843133871c1c7ac81b10182a15895be49885c98d1a379dd55f88004fae

Download Submit
C:\Users\Admin\AppData\Local\ca4f9916ccff6866a1cd62550f2ae34f\Admin@LXCISCYC_en-US\System\Process.txt

Filesize
4KB

MD5
dc55d2a5671ce06d906a47993b27569e

SHA1
f10198f91cbf7afeba50b34c097e4a72faa0840a

SHA256
f75c6ec5d9efa9dbbb1d48f9e67f1301b5e9784be697cef5ae841fe807833d1e

SHA512
12b292cf3f9421266968d88de284bac112b3e626dd684613d693eb03c8e85183f601a247bd70120e9abb1e9dec155eff21b1bda5518630f37dcb9d59c014a87c

Download Submit
memory/4052-126-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/4052-107-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/4052-3-0x0000000005490000-0x00000000054F6000-memory.dmp

Filesize
408KB

Download
memory/4052-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/4052-138-0x0000000005F10000-0x0000000005FA2000-memory.dmp

Filesize
584KB

Download
memory/4052-139-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/4052-140-0x0000000006560000-0x0000000006B06000-memory.dmp

Filesize
5.6MB

Download
memory/4052-144-0x0000000006010000-0x000000000601A000-memory.dmp

Filesize
40KB

Download
memory/4052-2-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download
memory/4052-150-0x0000000006530000-0x0000000006542000-memory.dmp

Filesize
72KB

Download
memory/4052-1-0x00000000008E0000-0x0000000000910000-memory.dmp

Filesize
192KB

Download
memory/4052-174-0x0000000074DE0000-0x0000000075591000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads