asyncrat | 1f65a0e05f395d15e1f8abce4088f754b9298bed46e0adec52d3968699a60d32

General

Target

WorldWindClient.exe
Size

170KB
MD5

d72548d2438f524ed8ef0bfecd9f9648
SHA1

fd90c2bbff083e48d9b35a4301cb34b2985dd82d
SHA256

1f65a0e05f395d15e1f8abce4088f754b9298bed46e0adec52d3968699a60d32
SHA512

689be9bf13fbf7aa7c42f9733051b8cba0807086a1f8ab3337152930a37b70fa6dbae483f16fd931c99dfa5c30ee42942f8b6270d4e9598ba94f9fa87d34c68e
SSDEEP

3072:++STW8djpN6izj8mZwdJqutB+YDpqIPu/i9bVK2cBWH7Xy6+Wp7:j8XN6W8mmHPtppXPSi9b4W

Score

10^/10

asyncrat stormkitty default credential_access 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/bot7141308019:AAFvbuyi4cX6OCqTVfOYVARrVfYTpen7uoA/sendMessage?chat_id=6234857847

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

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/2840-1-0x00000000000F0000-0x0000000000120000-memory.dmp	family_stormkitty

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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

Drops desktop.ini file(s) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	WorldWindClient.exe
File opened for modification	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	WorldWindClient.exe
File created	C:\Users\Admin\AppData\Local\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	WorldWindClient.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
23	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	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WorldWindClient.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	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
3308	cmd.exe
844	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	WorldWindClient.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	WorldWindClient.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe
2840	WorldWindClient.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2840	WorldWindClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 3308	2840	WorldWindClient.exe	100
PID 2840 wrote to memory of 3308	2840	WorldWindClient.exe	100
PID 2840 wrote to memory of 3308	2840	WorldWindClient.exe	100
PID 3308 wrote to memory of 3736	3308	cmd.exe	102
PID 3308 wrote to memory of 3736	3308	cmd.exe	102
PID 3308 wrote to memory of 3736	3308	cmd.exe	102
PID 3308 wrote to memory of 844	3308	cmd.exe	103
PID 3308 wrote to memory of 844	3308	cmd.exe	103
PID 3308 wrote to memory of 844	3308	cmd.exe	103
PID 3308 wrote to memory of 4472	3308	cmd.exe	104
PID 3308 wrote to memory of 4472	3308	cmd.exe	104
PID 3308 wrote to memory of 4472	3308	cmd.exe	104
PID 2840 wrote to memory of 1584	2840	WorldWindClient.exe	105
PID 2840 wrote to memory of 1584	2840	WorldWindClient.exe	105
PID 2840 wrote to memory of 1584	2840	WorldWindClient.exe	105
PID 1584 wrote to memory of 1096	1584	cmd.exe	107
PID 1584 wrote to memory of 1096	1584	cmd.exe	107
PID 1584 wrote to memory of 1096	1584	cmd.exe	107
PID 1584 wrote to memory of 3804	1584	cmd.exe	108
PID 1584 wrote to memory of 3804	1584	cmd.exe	108
PID 1584 wrote to memory of 3804	1584	cmd.exe	108

C:\Users\Admin\AppData\Local\Temp\WorldWindClient.exe
"C:\Users\Admin\AppData\Local\Temp\WorldWindClient.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:2840
- 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:3308
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3736
- - 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:844
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4472
- 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:1584
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1096
- - 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:3804

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4212,i,15436195446242760253,4000484513008731869,262144 --variations-seed-version --mojo-platform-channel-handle=3852 /prefetch:8
1⤵
PID:2908

Network

MITRE ATT&CK Enterprise v15

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\a66d568c4268d5486ffb31aa360bf99f\Admin@SYMRKCCU_en-US\System\Process.txt

Filesize
4KB

MD5
27575ca44546e9234e408cf61d123599

SHA1
85bf4c8062a21589b827348f128bd278bb745289

SHA256
8b398f2ad7b019629ed9b69dd56d1e4ad1fd21dda97502e5219ace4174f4d105

SHA512
31e51ef5f0d14af3e4404240a39c3b9dc607327353c4ff0f1f2e89cdcac0c78e12a0a385db23d668c0f71c1c5e4b71463325bc489672e0921918909125e23d98

Download Submit
C:\Users\Admin\AppData\Local\e8010a724b0954e844aaee2a36ab7edc\msgid.dat

Filesize
1B

MD5
c81e728d9d4c2f636f067f89cc14862c

SHA1
da4b9237bacccdf19c0760cab7aec4a8359010b0

SHA256
d4735e3a265e16eee03f59718b9b5d03019c07d8b6c51f90da3a666eec13ab35

SHA512
40b244112641dd78dd4f93b6c9190dd46e0099194d5a44257b7efad6ef9ff4683da1eda0244448cb343aa688f5d3efd7314dafe580ac0bcbf115aeca9e8dc114

Download Submit
memory/2840-154-0x00000000056B0000-0x0000000005742000-memory.dmp

Filesize
584KB

Download
memory/2840-3-0x0000000004AF0000-0x0000000004B56000-memory.dmp

Filesize
408KB

Download
memory/2840-2-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/2840-152-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/2840-0-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/2840-155-0x0000000005D00000-0x00000000062A4000-memory.dmp

Filesize
5.6MB

Download
memory/2840-159-0x0000000005860000-0x000000000586A000-memory.dmp

Filesize
40KB

Download
memory/2840-160-0x000000007441E000-0x000000007441F000-memory.dmp

Filesize
4KB

Download
memory/2840-1-0x00000000000F0000-0x0000000000120000-memory.dmp

Filesize
192KB

Download
memory/2840-166-0x0000000006530000-0x0000000006542000-memory.dmp

Filesize
72KB

Download
memory/2840-191-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download
memory/2840-192-0x0000000074410000-0x0000000074BC0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads