asyncrat | e574a3494f4b760d028ccb7c8c73d6997aa7fd422104fa9b56c9ab3ddb695b2b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15-12-2024 14:58

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

PryntVirus.exe
Size

232KB
MD5

ea10b6fdbb466c9e2bc1602efa14e4be
SHA1

f9144cda448d4cf8ff47ac9cdb56ed262c5f9de3
SHA256

e574a3494f4b760d028ccb7c8c73d6997aa7fd422104fa9b56c9ab3ddb695b2b
SHA512

81e076141d108f914008b29e2f7b350e832c1e1edb44d778a8150b8011c78452d29c1c563faf3da201cc8a91e61ac2b5bad7298be3ba36659a24298df4149fe9
SSDEEP

6144:jDubaBBOBIIj6HLLYLCYJqvc1DfNu4i8wb/SHbt5BasO5oUpNKEzoh:mbaYgh8wb6DY7XpQ

Score

10^/10

asyncrat stormkitty default discovery persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot8038687818:AAF7yfWLNIj0GslX51tOIFXZ_75cuFnZ9oc/sendMessage?chat_id=6378570062

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/4380-1-0x00000000006D0000-0x0000000000710000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	PryntVirus.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) 8 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	PryntVirus.exe
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	PryntVirus.exe
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	PryntVirus.exe
File opened for modification	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	PryntVirus.exe
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	PryntVirus.exe
File opened for modification	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	PryntVirus.exe
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	PryntVirus.exe
File created	C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	PryntVirus.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
16	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 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
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	PryntVirus.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
392	cmd.exe
4112	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	PryntVirus.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	PryntVirus.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4732	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe
4380	PryntVirus.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4380	PryntVirus.exe
Token: SeDebugPrivilege	4380	PryntVirus.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4380 wrote to memory of 392	4380	PryntVirus.exe	83
PID 4380 wrote to memory of 392	4380	PryntVirus.exe	83
PID 4380 wrote to memory of 392	4380	PryntVirus.exe	83
PID 392 wrote to memory of 3016	392	cmd.exe	85
PID 392 wrote to memory of 3016	392	cmd.exe	85
PID 392 wrote to memory of 3016	392	cmd.exe	85
PID 392 wrote to memory of 4112	392	cmd.exe	86
PID 392 wrote to memory of 4112	392	cmd.exe	86
PID 392 wrote to memory of 4112	392	cmd.exe	86
PID 392 wrote to memory of 3136	392	cmd.exe	87
PID 392 wrote to memory of 3136	392	cmd.exe	87
PID 392 wrote to memory of 3136	392	cmd.exe	87
PID 4380 wrote to memory of 4128	4380	PryntVirus.exe	90
PID 4380 wrote to memory of 4128	4380	PryntVirus.exe	90
PID 4380 wrote to memory of 4128	4380	PryntVirus.exe	90
PID 4128 wrote to memory of 1752	4128	cmd.exe	92
PID 4128 wrote to memory of 1752	4128	cmd.exe	92
PID 4128 wrote to memory of 1752	4128	cmd.exe	92
PID 4128 wrote to memory of 1464	4128	cmd.exe	93
PID 4128 wrote to memory of 1464	4128	cmd.exe	93
PID 4128 wrote to memory of 1464	4128	cmd.exe	93
PID 4380 wrote to memory of 4732	4380	PryntVirus.exe	98
PID 4380 wrote to memory of 4732	4380	PryntVirus.exe	98
PID 4380 wrote to memory of 4732	4380	PryntVirus.exe	98

C:\Users\Admin\AppData\Local\Temp\PryntVirus.exe
"C:\Users\Admin\AppData\Local\Temp\PryntVirus.exe"
1⤵
- Checks computer location settings
- 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:4380
- 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:392
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3016
- - 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:4112
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3136
- 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:4128
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1752
- - 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:1464
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Admin\AppData\Local\Temp\PryntVirus.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\630b4899141d9175ed6d909f71f6f076\msgid.dat

Filesize
4B

MD5
c9049d2a46feb0ae2de6b0636f32ea0d

SHA1
4bd1140f9e0082865ca95fc601532dcef465a1ac

SHA256
40f7da9e285605228c124dcf18ff5c3e3bfdf474074da8bb0633485c907ede7a

SHA512
3ca8d225325aa48b7732f82824280b977504cf9e7af1e25d7853ae18240aa89229ec677473670abebd55f1ff401e48bba51e05d45cfc17c967276a84f173f9cd

Download Submit
C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\a7e66168c532deaba931e9a4083d499e\Admin@SPDEBJWH_en-US\System\Process.txt

Filesize
4KB

MD5
4c36284779fda38acbe6de2905987f4e

SHA1
6b2e1873389b7ccaa68016ab1e1f6159fea0230d

SHA256
65a5da8a201bb4fcdc95cbb37b1cb60eede902821a3950f6f75b3764d1ffc585

SHA512
0877f01afa15c157e59ad30f0b40343fe64aff48faa5e359c6994b2704c65a9f962fdc5ab29e190496477fb541d769bbcdaba1c1351d39f31753fbe0dd759468

Download Submit
memory/4380-4-0x0000000005F90000-0x0000000006534000-memory.dmp

Filesize
5.6MB

Download
memory/4380-0-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/4380-5-0x0000000005A80000-0x0000000005B12000-memory.dmp

Filesize
584KB

Download
memory/4380-3-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4380-2-0x0000000005090000-0x00000000050F6000-memory.dmp

Filesize
408KB

Download
memory/4380-145-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4380-150-0x0000000005F30000-0x0000000005F3A000-memory.dmp

Filesize
40KB

Download
memory/4380-151-0x000000007533E000-0x000000007533F000-memory.dmp

Filesize
4KB

Download
memory/4380-152-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4380-1-0x00000000006D0000-0x0000000000710000-memory.dmp

Filesize
256KB

Download
memory/4380-158-0x0000000006EF0000-0x0000000006F02000-memory.dmp

Filesize
72KB

Download
memory/4380-181-0x0000000075330000-0x0000000075AE0000-memory.dmp

Filesize
7.7MB

Download
memory/4380-184-0x0000000007AA0000-0x0000000007AAA000-memory.dmp

Filesize
40KB

Download