asyncrat | 068e727f7a752a65815025756376baa1ae5622a6518cf8056764cfffa7d0b815

General

Target

cheat-Client-18.4/cheat ddnet.exe
Size

13.8MB
MD5

c243a4b95f7bd67a1787ca5637506d28
SHA1

c9d77c9c982d3b74057ddf39bc394c1089ebe762
SHA256

10e075782de89b66ee1780aa15ee50b3f1aa7caaeffa86d3855a27c19f1fed5f
SHA512

400b1906a3a1b5bb00109d2e067c7e0a86589275f0c1106942e4a056019a5f0b00dbeec233a3eb92d33cbd9783cd030453bd0623e6b3dc3863de6e31e6dfd9a7
SSDEEP

393216:UZogBso8b4gFr5jSpEVCZPQmlgoWNuQ4Le:UZoK8b/im0ZYmlgAQ4Le

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/bot7559842378:AAEO5G-UvKkJGXAkNr6mdPi4Yrgvo7GFhDE/sendMessage?chat_id=1426495159

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 2 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233af-6.dat	family_stormkitty
behavioral2/memory/1332-22-0x00000000001C0000-0x0000000000268000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000a0000000233af-6.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	cheat ddnet.exe

Executes dropped EXE 2 IoCs

pid	Process
1332	KRX Clients.exe
4216	KRX Client.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

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	KRX Clients.exe
File created	C:\Users\Admin\AppData\Local\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	KRX Clients.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
19	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
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 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	KRX Clients.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
1008	cmd.exe
2464	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	KRX Clients.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	KRX Clients.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe
1332	KRX Clients.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	KRX Clients.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 1332	1576	cheat ddnet.exe	81
PID 1576 wrote to memory of 1332	1576	cheat ddnet.exe	81
PID 1576 wrote to memory of 1332	1576	cheat ddnet.exe	81
PID 1576 wrote to memory of 4216	1576	cheat ddnet.exe	83
PID 1576 wrote to memory of 4216	1576	cheat ddnet.exe	83
PID 1332 wrote to memory of 1008	1332	KRX Clients.exe	85
PID 1332 wrote to memory of 1008	1332	KRX Clients.exe	85
PID 1332 wrote to memory of 1008	1332	KRX Clients.exe	85
PID 1008 wrote to memory of 3296	1008	cmd.exe	87
PID 1008 wrote to memory of 3296	1008	cmd.exe	87
PID 1008 wrote to memory of 3296	1008	cmd.exe	87
PID 1008 wrote to memory of 2464	1008	cmd.exe	88
PID 1008 wrote to memory of 2464	1008	cmd.exe	88
PID 1008 wrote to memory of 2464	1008	cmd.exe	88
PID 1008 wrote to memory of 4672	1008	cmd.exe	89
PID 1008 wrote to memory of 4672	1008	cmd.exe	89
PID 1008 wrote to memory of 4672	1008	cmd.exe	89
PID 1332 wrote to memory of 2584	1332	KRX Clients.exe	90
PID 1332 wrote to memory of 2584	1332	KRX Clients.exe	90
PID 1332 wrote to memory of 2584	1332	KRX Clients.exe	90
PID 2584 wrote to memory of 3904	2584	cmd.exe	92
PID 2584 wrote to memory of 3904	2584	cmd.exe	92
PID 2584 wrote to memory of 3904	2584	cmd.exe	92
PID 2584 wrote to memory of 2208	2584	cmd.exe	93
PID 2584 wrote to memory of 2208	2584	cmd.exe	93
PID 2584 wrote to memory of 2208	2584	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\cheat-Client-18.4\cheat ddnet.exe
"C:\Users\Admin\AppData\Local\Temp\cheat-Client-18.4\cheat ddnet.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\KRX Clients.exe
  "C:\Users\Admin\AppData\Local\Temp\KRX Clients.exe"
  2⤵
  - Executes dropped EXE
  - 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:1332
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    - Suspicious use of WriteProcessMemory
    PID:1008
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:3296
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show profile
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Wi-Fi Discovery
      PID:2464
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      System Location Discovery: System Language Discovery
      PID:4672
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2584
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:3904
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:2208
- C:\Users\Admin\AppData\Local\Temp\KRX Client.exe
  "C:\Users\Admin\AppData\Local\Temp\KRX Client.exe"
  2⤵
  - Executes dropped EXE
  PID:4216

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

3

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\244afb72866c8b52ebeea553725abc3a\Admin@KZYBFHMK_en-US\System\Process.txt

Filesize
4KB

MD5
4bccd7a339c1d67f2be91851cb427097

SHA1
78968f2fab2e24f7a030bb4722de1299c20623ef

SHA256
48f9d26c3ca0766abb76fbcd8db2cf94b1b5a91085af15fd96d9648d0699d712

SHA512
c6160f24cba4e88798839330ce0a3be7aea68d00d10e34ef9f7ed8c4316c34749cdb9e9113e6bd875f95f03946cea0d3ea25ee04e89d32ee25f6fae8a8302e57

Download Submit
C:\Users\Admin\AppData\Local\8a3972323b525bba344ad1d0f9f91669\msgid.dat

Filesize
3B

MD5
45fbc6d3e05ebd93369ce542e8f2322d

SHA1
0bad865a02d82f4970687ffe1b80822b76cc0626

SHA256
0f4121d0ef1df4c86854c7ebb47ae1c93de8aec8f944035eeaa6495dd71a0678

SHA512
1028363d99ff555a6b72cb48bcf75fbc019fcb98ebd52bcfd07be0a82347f1046192b020630a35798fa1b1a644ff86bf51b3d411eb540afbf427c679e693e736

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

Filesize
13.1MB

MD5
4576b168071792af058f9247646c0211

SHA1
3a65b8aaa74fe1f0c519de3a3fb1ebb7c11d636e

SHA256
4361a46dc16dd11d11d9d83e06ebb8332049be65c4589b3e331e51e97502bb18

SHA512
f397fc6227e1f8b9b7a3cbe1aafdbb2f161bc4d116b83e6dd70da38c0de68098ea8d00defcbe1051291e3982b42dbc2956384403d892745952059b1b768dcdcf

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

Filesize
648KB

MD5
9ce354a36d22e83dfffbd0153d199a7b

SHA1
0dc32906c6c0549bc321968fd690c57597e4b25d

SHA256
39e63e086fe73f3accc83c134107419cb346887f1574399cf4d73bac28c9c3e5

SHA512
ab934189c487e1496ba5e82010aa85a71b860d78170fb88773494be800a9ff92c8366d41f70997291f7adf4db159fc7d36856a07a101b9bfa77089bab70566f1

Download Submit
memory/1332-22-0x00000000001C0000-0x0000000000268000-memory.dmp

Filesize
672KB

Download
memory/1332-24-0x0000000004D10000-0x0000000004D76000-memory.dmp

Filesize
408KB

Download
memory/1332-168-0x0000000005770000-0x0000000005802000-memory.dmp

Filesize
584KB

Download
memory/1332-169-0x0000000005DC0000-0x0000000006364000-memory.dmp

Filesize
5.6MB

Download
memory/1332-171-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/1332-174-0x00000000058A0000-0x00000000058AA000-memory.dmp

Filesize
40KB

Download
memory/1332-21-0x0000000074EDE000-0x0000000074EDF000-memory.dmp

Filesize
4KB

Download
memory/1332-180-0x0000000006730000-0x0000000006742000-memory.dmp

Filesize
72KB

Download
memory/4216-23-0x0000000140000000-0x0000000141FED000-memory.dmp

Filesize
31.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads