asyncrat | 9c98af46658c1d03d1befdb088719d324f3891f05c1a6b1b2ee436a5a5552ec4

Analysis

max time kernel
144s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
02/08/2023, 12:13

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General

Target
9c.exe
Size 226KB
Sample230802-pdqtrsef38
SHA256 9c98af46658c1d03d1befdb088719d324f3891f05c1a6b1b2ee436a5a5552ec4
MD5 53ddfe229bb020d36166edb9b5d722f8
SHA1 f0035ce182a1c107ef8e08fa96ea22c558db8c18
SHA512 24b1b279f8b90a185dd6ded087878ff83c61469b1266fec41276e2eb19ee6ac51089be7b02146f35364f7f567d3335746a7e6a4e57b460fb41b7f035e7daa6b1
SSDEEP 3072:2+STW8djpN6izj8mZw9KalFI8OSyz6UbB2a9w7F9d16ug6+WpP:L8XN6W8mm0OUbwrFzg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat stormkitty default 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/bot5012120140:AAFYUA4Q8F0hkeg6HHkMOWhAJcA6-6lhzvc/sendMessage?chat_id=265371884

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/2688-133-0x0000000000E50000-0x0000000000E8E000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/2688-133-0x0000000000E50000-0x0000000000E8E000-memory.dmp	asyncrat

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) 7 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	9c.exe
File opened for modification	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	9c.exe
File created	C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	9c.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
33	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe
2688	9c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	9c.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 1840	2688	9c.exe	92
PID 2688 wrote to memory of 1840	2688	9c.exe	92
PID 2688 wrote to memory of 1840	2688	9c.exe	92
PID 1840 wrote to memory of 2984	1840	cmd.exe	94
PID 1840 wrote to memory of 2984	1840	cmd.exe	94
PID 1840 wrote to memory of 2984	1840	cmd.exe	94
PID 1840 wrote to memory of 416	1840	cmd.exe	95
PID 1840 wrote to memory of 416	1840	cmd.exe	95
PID 1840 wrote to memory of 416	1840	cmd.exe	95
PID 1840 wrote to memory of 1232	1840	cmd.exe	96
PID 1840 wrote to memory of 1232	1840	cmd.exe	96
PID 1840 wrote to memory of 1232	1840	cmd.exe	96
PID 2688 wrote to memory of 3824	2688	9c.exe	97
PID 2688 wrote to memory of 3824	2688	9c.exe	97
PID 2688 wrote to memory of 3824	2688	9c.exe	97
PID 3824 wrote to memory of 2660	3824	cmd.exe	99
PID 3824 wrote to memory of 2660	3824	cmd.exe	99
PID 3824 wrote to memory of 2660	3824	cmd.exe	99
PID 3824 wrote to memory of 2916	3824	cmd.exe	100
PID 3824 wrote to memory of 2916	3824	cmd.exe	100
PID 3824 wrote to memory of 2916	3824	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\9c.exe
"C:\Users\Admin\AppData\Local\Temp\9c.exe"
1⤵
- Drops desktop.ini file(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1840
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2984
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:416
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:1232
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3824
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2660
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:2916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

msgid.dat

Path C:\Users\Admin\AppData\Local\9d53cfbb1850dd45cd0097d6b6e68eef\msgid.dat
Size 3B
SHA256 37834f2f25762f23e1f74a531cbe445db73d6765ebe60878a7dfbecd7d4af6e1
MD5 ec8956637a99787bd197eacd77acce5e
SHA1 c8306ae139ac98f432932286151dc0ec55580eca
SHA512 0e50f4ce9142e33141fe8dfcb55e4e5def5f12630c2f4e0dbcfe4ed49894ec5e3dd76215bd3f92f3035fe710f1bcc1f676e7d37114406d97983cc1fd8105914d
MD5 SHA1 SHA512

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Bookmarks.txt

Path C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

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Process.txt

Path C:\Users\Admin\AppData\Local\9f7ccb0d2e0ae688cc360dd5d8a4c41a\Admin@MSXGLQPS_en-US\System\Process.txt
Size 4KB
SHA256 672b51fe5f987e809c93f4ff8835eceaa0c35a1a434ebaeb11f992f6691e7dc2
MD5 8a8252ce95e53061ddfc5eeed9ee95b4
SHA1 50a76f02434baf9248dc128dce4a419425b7d705
SHA512 dddd840ed531dd986294a4a0173e66680e344fb7cdefeed64dfb24299d44805c7da4db8f883a67569b61faf60098e6bb6c39cb81c27cc1181cb31c1ef629b24b
SSDEEP 48:WzsabcXFq23oMOj62Jb1u2K0BV6mtzpwSupAZxTsFMvO:WzsawXFq23VG6EBbBV6mtVSpAHTsqG
MD5 SHA1 SHA512 SSDEEP

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memory/2688-202-0x0000000005820000-0x0000000005830000-memory.dmp

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memory/2688-136-0x00000000059A0000-0x0000000005A06000-memory.dmp

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memory/2688-194-0x00000000747C0000-0x0000000074F70000-memory.dmp

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memory/2688-133-0x0000000000E50000-0x0000000000E8E000-memory.dmp

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memory/2688-135-0x0000000005820000-0x0000000005830000-memory.dmp

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memory/2688-287-0x0000000005820000-0x0000000005830000-memory.dmp

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memory/2688-289-0x00000000067B0000-0x0000000006842000-memory.dmp

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memory/2688-290-0x0000000006E00000-0x00000000073A4000-memory.dmp

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memory/2688-294-0x00000000068D0000-0x00000000068DA000-memory.dmp

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memory/2688-134-0x00000000747C0000-0x0000000074F70000-memory.dmp

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memory/2688-300-0x0000000005D70000-0x0000000005D82000-memory.dmp

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memory/2688-325-0x0000000005820000-0x0000000005830000-memory.dmp

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