asyncrat | 09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
02-07-2024 01:03

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General

Target

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
Size

514KB
MD5

395c4070233d059b2f1661fbdc6af0b4
SHA1

c4e8741e9c21d4a5d9a45138232da82c751cc390
SHA256

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669
SHA512

b3214c512ad6cde7f64ec1d9e8fab416917a248e77268f8516505d8f319168445e184c0182679ed8fdbc967fb6cb94b4e4fc4e2a760bc0f50aa154da81d6b3b9
SSDEEP

12288:IOK+cDtCaKVvTkLsDSdWg51DKWpw06aioXy3FMk:xGAZVL1D5W2Hckmk

Score

10^/10

asyncrat stormkitty default persistence privilege_escalation rat 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/bot7322917184:AAEZSbuOE5wiEr26jHjFYvUlp0J9RAox2lU/sendMessage?chat_id=5635047295

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

behavioral2/memory/3712-13-0x0000000000400000-0x0000000000432000-memory.dmp family_stormkitty

resource	yara_rule
behavioral2/memory/3712-13-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty

Drops desktop.ini file(s) 8 IoCs

Processes:

MSBuild.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	MSBuild.exe
File opened for modification	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	MSBuild.exe
File opened for modification	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	MSBuild.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

61 pastebin.com
62 pastebin.com
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

51 icanhazip.com
Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Suspicious use of SetThreadContext 1 IoCs

Processes:

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe

description pid process target process

PID 696 set thread context of 3712 696 09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe MSBuild.exe

flow	ioc
61	pastebin.com
62	pastebin.com

flow	ioc
51	icanhazip.com

description	pid	process	target process
PID 696 set thread context of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe

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

Processes:

netsh.exenetsh.exe

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

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

Processes:

MSBuild.exe

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

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exeMSBuild.exe

pid	process
696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe
3712	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 696 09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
Token: SeDebugPrivilege 3712 MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
Token: SeDebugPrivilege	3712	MSBuild.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exeMSBuild.execmd.execmd.exe

description	pid	process	target process
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 696 wrote to memory of 3712	696	09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe	MSBuild.exe
PID 3712 wrote to memory of 3116	3712	MSBuild.exe	cmd.exe
PID 3712 wrote to memory of 3116	3712	MSBuild.exe	cmd.exe
PID 3712 wrote to memory of 3116	3712	MSBuild.exe	cmd.exe
PID 3116 wrote to memory of 3052	3116	cmd.exe	chcp.com
PID 3116 wrote to memory of 3052	3116	cmd.exe	chcp.com
PID 3116 wrote to memory of 3052	3116	cmd.exe	chcp.com
PID 3116 wrote to memory of 880	3116	cmd.exe	netsh.exe
PID 3116 wrote to memory of 880	3116	cmd.exe	netsh.exe
PID 3116 wrote to memory of 880	3116	cmd.exe	netsh.exe
PID 3116 wrote to memory of 4212	3116	cmd.exe	findstr.exe
PID 3116 wrote to memory of 4212	3116	cmd.exe	findstr.exe
PID 3116 wrote to memory of 4212	3116	cmd.exe	findstr.exe
PID 3712 wrote to memory of 1252	3712	MSBuild.exe	cmd.exe
PID 3712 wrote to memory of 1252	3712	MSBuild.exe	cmd.exe
PID 3712 wrote to memory of 1252	3712	MSBuild.exe	cmd.exe
PID 1252 wrote to memory of 2196	1252	cmd.exe	chcp.com
PID 1252 wrote to memory of 2196	1252	cmd.exe	chcp.com
PID 1252 wrote to memory of 2196	1252	cmd.exe	chcp.com
PID 1252 wrote to memory of 1400	1252	cmd.exe	netsh.exe
PID 1252 wrote to memory of 1400	1252	cmd.exe	netsh.exe
PID 1252 wrote to memory of 1400	1252	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe
"C:\Users\Admin\AppData\Local\Temp\09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:696

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3712

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
3⤵
- Suspicious use of WriteProcessMemory
PID:3116

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:3052

C:\Windows\SysWOW64\netsh.exe
netsh wlan show profile
4⤵
- Event Triggered Execution: Netsh Helper DLL
PID:880

C:\Windows\SysWOW64\findstr.exe
findstr All
4⤵
PID:4212

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
3⤵
- Suspicious use of WriteProcessMemory
PID:1252

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:2196

C:\Windows\SysWOW64\netsh.exe
netsh wlan show networks mode=bssid
4⤵
- Event Triggered Execution: Netsh Helper DLL
PID:1400

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=4056,i,8447163055677043976,7218082390179600880,262144 --variations-seed-version --mojo-platform-channel-handle=4572 /prefetch:8
1⤵
PID:4392

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\10c099b054d4fb1c0fb406152849cbcb\msgid.dat
Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\fde07eb82f9e35ee698e139a3491c49f\Admin@PXHSTPPU_en-US\System\Process.txt
Filesize
4KB

MD5
351702de90f8b701f79e09812bec4c35

SHA1
db8b5a0e8d956f2aba70c1654bccadb7360c3bde

SHA256
e898d6b3354f96c78d28a28821c6dc652d980b7310d65559d60806244d816ca0

SHA512
088299271b4c393fcec07b97fa66519d716d38e4443db870d3145b0144c83410b1f1789a8fe9e64f1bc49bddc0cbc026bb1177f1434e04e8f2a0b23240ce72bd

Download Submit
memory/696-6-0x0000000005A10000-0x0000000005A54000-memory.dmp

Filesize
272KB

Download
memory/696-2-0x0000000005DE0000-0x0000000006384000-memory.dmp

Filesize
5.6MB

Download
memory/696-4-0x0000000005970000-0x0000000005A0C000-memory.dmp

Filesize
624KB

Download
memory/696-5-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/696-0-0x0000000074F8E000-0x0000000074F8F000-memory.dmp

Filesize
4KB

Download
memory/696-7-0x0000000005CD0000-0x0000000005CDA000-memory.dmp

Filesize
40KB

Download
memory/696-8-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/696-9-0x0000000006E20000-0x0000000006E3A000-memory.dmp

Filesize
104KB

Download
memory/696-10-0x0000000009B30000-0x0000000009B36000-memory.dmp

Filesize
24KB

Download
memory/696-11-0x0000000074F8E000-0x0000000074F8F000-memory.dmp

Filesize
4KB

Download
memory/696-12-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/696-1-0x0000000000860000-0x00000000008E4000-memory.dmp

Filesize
528KB

Download
memory/696-3-0x00000000058D0000-0x0000000005962000-memory.dmp

Filesize
584KB

Download
memory/696-15-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-16-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-18-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download
memory/3712-17-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-168-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-173-0x0000000006110000-0x000000000611A000-memory.dmp

Filesize
40KB

Download
memory/3712-180-0x0000000006480000-0x0000000006492000-memory.dmp

Filesize
72KB

Download
memory/3712-179-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-13-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3712-203-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3712-204-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download