asyncrat | 06da872afe3d9c80535c2fccdbe7054d299de1285cdf3666fa1a69a1a288c287

General

Target

NLBruteACTIVATEOR.exe
Size

226KB
MD5

dbd8368aacabeb2f3007f2e41651e43e
SHA1

fc83221eca35d6fe5e71d12caa63d6b19fc702b5
SHA256

06da872afe3d9c80535c2fccdbe7054d299de1285cdf3666fa1a69a1a288c287
SHA512

4580870152c081843e0d6de2d6ad6a7b4b6fda017b09722720bb87c3ca790765cf355a6abf20810217085d8dc00a6fc2fe517d069214f64387ad59880a632f32
SSDEEP

3072:Z+STW8djpN6izj8mZw/Zf7/dFoUbBjXpW+WQwARPzjjyCYNMUL6+Wp0:m8XN6W8mm/VgUbfNBdnGd

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/bot5787513945:AAHk4B_J3fjaWnYKNH9snbwB6zLOSTidL0E/sendMessage?chat_id=5611920321

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/864-1-0x0000000000600000-0x000000000063E000-memory.dmp	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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	NLBruteACTIVATEOR.exe
File opened for modification	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	NLBruteACTIVATEOR.exe
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	NLBruteACTIVATEOR.exe
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	NLBruteACTIVATEOR.exe
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	NLBruteACTIVATEOR.exe
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	NLBruteACTIVATEOR.exe
File created	C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	NLBruteACTIVATEOR.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
30	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 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
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	NLBruteACTIVATEOR.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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
4344	netsh.exe
4364	cmd.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	NLBruteACTIVATEOR.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	NLBruteACTIVATEOR.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe
864	NLBruteACTIVATEOR.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	864	NLBruteACTIVATEOR.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 4364	864	NLBruteACTIVATEOR.exe	95
PID 864 wrote to memory of 4364	864	NLBruteACTIVATEOR.exe	95
PID 864 wrote to memory of 4364	864	NLBruteACTIVATEOR.exe	95
PID 4364 wrote to memory of 100	4364	cmd.exe	97
PID 4364 wrote to memory of 100	4364	cmd.exe	97
PID 4364 wrote to memory of 100	4364	cmd.exe	97
PID 4364 wrote to memory of 4344	4364	cmd.exe	98
PID 4364 wrote to memory of 4344	4364	cmd.exe	98
PID 4364 wrote to memory of 4344	4364	cmd.exe	98
PID 4364 wrote to memory of 4352	4364	cmd.exe	99
PID 4364 wrote to memory of 4352	4364	cmd.exe	99
PID 4364 wrote to memory of 4352	4364	cmd.exe	99
PID 864 wrote to memory of 1120	864	NLBruteACTIVATEOR.exe	100
PID 864 wrote to memory of 1120	864	NLBruteACTIVATEOR.exe	100
PID 864 wrote to memory of 1120	864	NLBruteACTIVATEOR.exe	100
PID 1120 wrote to memory of 840	1120	cmd.exe	102
PID 1120 wrote to memory of 840	1120	cmd.exe	102
PID 1120 wrote to memory of 840	1120	cmd.exe	102
PID 1120 wrote to memory of 3188	1120	cmd.exe	103
PID 1120 wrote to memory of 3188	1120	cmd.exe	103
PID 1120 wrote to memory of 3188	1120	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\NLBruteACTIVATEOR.exe
"C:\Users\Admin\AppData\Local\Temp\NLBruteACTIVATEOR.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:864
- 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:4364
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:100
- - 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:4344
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4352
- 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:1120
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:840
- - 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:3188

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\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\1fbde7e52610841e99573eb395c9db73\Admin@ZTSLLRFH_en-US\System\Process.txt

Filesize
4KB

MD5
9851b8a5a1c7f4b6d194abf8c1e07115

SHA1
163399602636496a3f11d4246ebac68c6b1a4e8f

SHA256
3b8dfcb3f00d11a0818e5b53e9478170278cce1775f28b01a07aba7daf71ac51

SHA512
3bcdf287d26cb904b0a00d688f1b1b19f546a0e3ff336b9f39a1b691d81cce3937fc3e372819aa64b893a9ad73868eb6236359c74677fea9b3bb2a5b175f88f0

Download Submit
C:\Users\Admin\AppData\Local\f32c2c68095064bb9a07d7bd0a831944\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/864-3-0x00000000050E0000-0x0000000005146000-memory.dmp

Filesize
408KB

Download
memory/864-0-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/864-126-0x0000000074CBE000-0x0000000074CBF000-memory.dmp

Filesize
4KB

Download
memory/864-2-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/864-151-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/864-152-0x0000000074CB0000-0x0000000075460000-memory.dmp

Filesize
7.7MB

Download
memory/864-154-0x0000000005B10000-0x0000000005BA2000-memory.dmp

Filesize
584KB

Download
memory/864-155-0x0000000006160000-0x0000000006704000-memory.dmp

Filesize
5.6MB

Download
memory/864-159-0x0000000005C30000-0x0000000005C3A000-memory.dmp

Filesize
40KB

Download
memory/864-1-0x0000000000600000-0x000000000063E000-memory.dmp

Filesize
248KB

Download
memory/864-165-0x0000000074CB0000-0x0000000075460000-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