asyncrat | 58b1013f511e61f2ddfb547939895ec161ab8bc03f5413529f85f1a3272d38d4

General

Target

Client.exe
Size

170KB
MD5

e29ab30e42348ecf2831928b7b95d5d8
SHA1

70ae302ae078326efbe444fd8158d2b104a06a69
SHA256

58b1013f511e61f2ddfb547939895ec161ab8bc03f5413529f85f1a3272d38d4
SHA512

34a3209dc0856ea0e4d0573eca4dd53b238ebb317f10cb84683d99c64c1264693390d42193fcbac190ce9d9e0a33c9f32de8c4a57e4d38ec267ad16ad5d3138d
SSDEEP

3072:3+STW8djpN6izj8mZw0YaeiJFqIPu/i9bVJ2cxO06+Wpz:c8XN6W8mm0YmfXPSi9bDD

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/bot5344934242:AAF3rLeFDCGd-IVKJG_PU99MSQjdKyNgeR0/sendMessage?chat_id=1619136628

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

Processes:

resource	yara_rule
behavioral1/memory/1048-1-0x0000000000250000-0x0000000000280000-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) 12 IoCs

Processes:

Client.exeClient.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\725fc1e90bce03fb0056b3a0e914e563\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\725fc1e90bce03fb0056b3a0e914e563\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\725fc1e90bce03fb0056b3a0e914e563\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\401b4fa360dd932a2802c6eba8ad6725\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Client.exe
File created	C:\Users\Admin\AppData\Local\725fc1e90bce03fb0056b3a0e914e563\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Client.exe
File opened for modification	C:\Users\Admin\AppData\Local\725fc1e90bce03fb0056b3a0e914e563\Admin@PDIZKVQX_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Client.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.

Processes:

flow ioc

4 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

flow	ioc
4	icanhazip.com

Event Triggered Execution: Netsh Helper DLL 1 TTPs 12 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

Processes:

netsh.exenetsh.exenetsh.exenetsh.exe

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 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
Key opened	\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

System Location Discovery: System Language Discovery 1 TTPs 16 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

Processes:

chcp.comnetsh.execmd.exefindstr.exenetsh.execmd.exenetsh.exechcp.comnetsh.exeClient.exechcp.comClient.execmd.execmd.exechcp.comfindstr.exe

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	cmd.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	netsh.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	Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 4 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

Processes:

cmd.exenetsh.execmd.exenetsh.exe

pid process

2952 cmd.exe
2064 netsh.exe
2116 cmd.exe
2596 netsh.exe

pid	process
2952	cmd.exe
2064	netsh.exe
2116	cmd.exe
2596	netsh.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Client.exeClient.exe

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

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

Client.exeClient.exe

pid	process
1048	Client.exe
1048	Client.exe
1048	Client.exe
1048	Client.exe
1048	Client.exe
3024	Client.exe
3024	Client.exe
3024	Client.exe
3024	Client.exe
3024	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client.exeClient.exe

description pid process

Token: SeDebugPrivilege 1048 Client.exe
Token: SeDebugPrivilege 3024 Client.exe

description	pid	process
Token: SeDebugPrivilege	1048	Client.exe
Token: SeDebugPrivilege	3024	Client.exe

Suspicious use of WriteProcessMemory 56 IoCs

Processes:

Client.execmd.execmd.exeClient.execmd.execmd.exe

description	pid	process	target process
PID 1048 wrote to memory of 2952	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2952	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2952	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2952	1048	Client.exe	cmd.exe
PID 2952 wrote to memory of 2944	2952	cmd.exe	chcp.com
PID 2952 wrote to memory of 2944	2952	cmd.exe	chcp.com
PID 2952 wrote to memory of 2944	2952	cmd.exe	chcp.com
PID 2952 wrote to memory of 2944	2952	cmd.exe	chcp.com
PID 2952 wrote to memory of 2064	2952	cmd.exe	netsh.exe
PID 2952 wrote to memory of 2064	2952	cmd.exe	netsh.exe
PID 2952 wrote to memory of 2064	2952	cmd.exe	netsh.exe
PID 2952 wrote to memory of 2064	2952	cmd.exe	netsh.exe
PID 2952 wrote to memory of 1544	2952	cmd.exe	findstr.exe
PID 2952 wrote to memory of 1544	2952	cmd.exe	findstr.exe
PID 2952 wrote to memory of 1544	2952	cmd.exe	findstr.exe
PID 2952 wrote to memory of 1544	2952	cmd.exe	findstr.exe
PID 1048 wrote to memory of 2500	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2500	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2500	1048	Client.exe	cmd.exe
PID 1048 wrote to memory of 2500	1048	Client.exe	cmd.exe
PID 2500 wrote to memory of 768	2500	cmd.exe	chcp.com
PID 2500 wrote to memory of 768	2500	cmd.exe	chcp.com
PID 2500 wrote to memory of 768	2500	cmd.exe	chcp.com
PID 2500 wrote to memory of 768	2500	cmd.exe	chcp.com
PID 2500 wrote to memory of 532	2500	cmd.exe	netsh.exe
PID 2500 wrote to memory of 532	2500	cmd.exe	netsh.exe
PID 2500 wrote to memory of 532	2500	cmd.exe	netsh.exe
PID 2500 wrote to memory of 532	2500	cmd.exe	netsh.exe
PID 3024 wrote to memory of 2116	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 2116	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 2116	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 2116	3024	Client.exe	cmd.exe
PID 2116 wrote to memory of 2864	2116	cmd.exe	chcp.com
PID 2116 wrote to memory of 2864	2116	cmd.exe	chcp.com
PID 2116 wrote to memory of 2864	2116	cmd.exe	chcp.com
PID 2116 wrote to memory of 2864	2116	cmd.exe	chcp.com
PID 2116 wrote to memory of 2596	2116	cmd.exe	netsh.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	netsh.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	netsh.exe
PID 2116 wrote to memory of 2596	2116	cmd.exe	netsh.exe
PID 2116 wrote to memory of 2544	2116	cmd.exe	findstr.exe
PID 2116 wrote to memory of 2544	2116	cmd.exe	findstr.exe
PID 2116 wrote to memory of 2544	2116	cmd.exe	findstr.exe
PID 2116 wrote to memory of 2544	2116	cmd.exe	findstr.exe
PID 3024 wrote to memory of 1392	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 1392	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 1392	3024	Client.exe	cmd.exe
PID 3024 wrote to memory of 1392	3024	Client.exe	cmd.exe
PID 1392 wrote to memory of 1868	1392	cmd.exe	chcp.com
PID 1392 wrote to memory of 1868	1392	cmd.exe	chcp.com
PID 1392 wrote to memory of 1868	1392	cmd.exe	chcp.com
PID 1392 wrote to memory of 1868	1392	cmd.exe	chcp.com
PID 1392 wrote to memory of 2940	1392	cmd.exe	netsh.exe
PID 1392 wrote to memory of 2940	1392	cmd.exe	netsh.exe
PID 1392 wrote to memory of 2940	1392	cmd.exe	netsh.exe
PID 1392 wrote to memory of 2940	1392	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.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:1048
- 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:2952
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2944
- - 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:2064
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1544
- 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:2500
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:768
- - 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:532

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2664

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.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:3024
- 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:2116
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2864
- - 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:2596
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2544
- 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:1392
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1868
- - 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:2940

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\Temp\places.raw

Filesize
5.0MB

MD5
533fa0d156958b754f04d378798605a5

SHA1
d98c7f2baa6c4318e872136ff31ee7e3c60af720

SHA256
e9684ca668f610af058f7185880564680946e3f5c722b29dfd441e7d08e52f14

SHA512
5a2c90a59d4c7b6cf7105de3aa8a12908b374d76502cc27732f809118d70dbabaead7fe531f6a14f7d58125a4ff200d71a97d358e09044f9023d1a9294b2d809

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8797.tmp.dat

Filesize
92KB

MD5
df8f707fde4a4e68ffee7c48f6a9b7db

SHA1
6852a7a4c463c3853643439794ed130a41d0c90b

SHA256
dc4e84de932df42fc1d78aa17751a6e21e723ae60796cd400e0b01c26d1b0449

SHA512
9c99fb4dc2c7727a75a632e28d3d18b6b4736f4484720788f9410a4567bf4aa4ed74fc6448a6a7d7cdff7bb4787e906a0f1c4e05c41ba02473e900f6aee9b7ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8799.tmp.dat

Filesize
148KB

MD5
90a1d4b55edf36fa8b4cc6974ed7d4c4

SHA1
aba1b8d0e05421e7df5982899f626211c3c4b5c1

SHA256
7cf3e9e8619904e72ea6608cc43e9b6c9f8aa2af02476f60c2b3daf33075981c

SHA512
ea0838be754e1258c230111900c5937d2b0788f90bbf7c5f82b2ceda7868e50afb86c301f313267eaa912778da45755560b5434885521bf915967a7863922ae2

Download Submit
C:\Users\Admin\AppData\Local\bcb319a67e76fc323354ac161a62680a\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/1048-0-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/1048-1-0x0000000000250000-0x0000000000280000-memory.dmp

Filesize
192KB

Download
memory/1048-2-0x0000000074760000-0x0000000074E4E000-memory.dmp

Filesize
6.9MB

Download
memory/1048-73-0x0000000074760000-0x0000000074E4E000-memory.dmp

Filesize
6.9MB

Download
memory/1048-77-0x000000007476E000-0x000000007476F000-memory.dmp

Filesize
4KB

Download
memory/1048-78-0x0000000074760000-0x0000000074E4E000-memory.dmp

Filesize
6.9MB

Download
memory/1048-84-0x0000000074760000-0x0000000074E4E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads