asyncrat | a302f5eb849f5873826ff3f2034075450430d65051809ca6489db3da754e3bea

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 12:18

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General

Target
kdmapper_stealer.exe
Size 175KB
Sample240511-pgnhtaae72
SHA256 a302f5eb849f5873826ff3f2034075450430d65051809ca6489db3da754e3bea
MD5 a5e04e2996186311ce58c25fef43a779
SHA1 3a3f2116116850fa52b82a12d6c052d0bd74e60b
SHA512 552d05803b2e41144cb9ba7852d6dea066dc03dbfec46688dd0c3e92b237b795a3bec03d4b737dd36b284f8a36ca61aaf466ecc7a56898d806480012f53834a7
SSDEEP 3072:Xe8F4hUIcmRtpGh0I/bv9Lv0cU+lL/dMlZZUZ0b2gTpXwARE+WpCz:34h3pRtEh0I90c5MlYZ0b2q9
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

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/864-1-0x0000000000200000-0x0000000000232000-memory.dmp	family_stormkitty

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) 8 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	kdmapper_stealer.exe
File opened for modification	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	kdmapper_stealer.exe
File created	C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	kdmapper_stealer.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.

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	kdmapper_stealer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	kdmapper_stealer.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe
864	kdmapper_stealer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	864	kdmapper_stealer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 3516	864	kdmapper_stealer.exe	88
PID 864 wrote to memory of 3516	864	kdmapper_stealer.exe	88
PID 864 wrote to memory of 3516	864	kdmapper_stealer.exe	88
PID 3516 wrote to memory of 2984	3516	cmd.exe	90
PID 3516 wrote to memory of 2984	3516	cmd.exe	90
PID 3516 wrote to memory of 2984	3516	cmd.exe	90
PID 3516 wrote to memory of 1224	3516	cmd.exe	91
PID 3516 wrote to memory of 1224	3516	cmd.exe	91
PID 3516 wrote to memory of 1224	3516	cmd.exe	91
PID 3516 wrote to memory of 2880	3516	cmd.exe	92
PID 3516 wrote to memory of 2880	3516	cmd.exe	92
PID 3516 wrote to memory of 2880	3516	cmd.exe	92
PID 864 wrote to memory of 3112	864	kdmapper_stealer.exe	93
PID 864 wrote to memory of 3112	864	kdmapper_stealer.exe	93
PID 864 wrote to memory of 3112	864	kdmapper_stealer.exe	93
PID 3112 wrote to memory of 3464	3112	cmd.exe	95
PID 3112 wrote to memory of 3464	3112	cmd.exe	95
PID 3112 wrote to memory of 3464	3112	cmd.exe	95
PID 3112 wrote to memory of 5056	3112	cmd.exe	96
PID 3112 wrote to memory of 5056	3112	cmd.exe	96
PID 3112 wrote to memory of 5056	3112	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\kdmapper_stealer.exe
"C:\Users\Admin\AppData\Local\Temp\kdmapper_stealer.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:864
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3516
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:2984
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:1224
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:2880
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3112
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:3464
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:5056

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

msgid.dat

Path C:\Users\Admin\AppData\Local\0986c286fd2f72d085cc01e5df670c97\msgid.dat
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

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Bookmarks.txt

Path C:\Users\Admin\AppData\Local\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_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\09b35d32f5e5e6a44f6d74cb0b679a5c\Admin@SNFVGQLU_en-US\System\Process.txt
Size 4KB
SHA256 f425c1c4eef58206fc2db1ebc2663299b13132ac154b95b2488930b75347dce2
MD5 7d5c04d6ef3e87928e337ffa8e563754
SHA1 a8dd150f0e765a1771289a2fd759483364a8e3af
SHA512 2ad363d9f3eab08b6e51543fcfd3026439028611b801b76a452e510234211899dc99646587c68ed73981d78b26e3f693ba1da4f1d46554ed18a34b28884bc6b0
SSDEEP 48:Wzhbc4ttsfpx2b1uay926lHFM+Fu23XG70UlJFBrXMm+:Wzhw4t8px2BWtlHq+Fu23XG70wJFBrXM
MD5 SHA1 SHA512 SSDEEP

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memory/864-144-0x00000000752C0000-0x0000000075A70000-memory.dmp

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memory/864-3-0x0000000004C10000-0x0000000004C76000-memory.dmp

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memory/864-2-0x00000000752C0000-0x0000000075A70000-memory.dmp

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memory/864-0-0x00000000752CE000-0x00000000752CF000-memory.dmp

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memory/864-146-0x0000000005720000-0x00000000057B2000-memory.dmp

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memory/864-147-0x0000000005D70000-0x0000000006314000-memory.dmp

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memory/864-151-0x0000000005830000-0x000000000583A000-memory.dmp

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memory/864-1-0x0000000000200000-0x0000000000232000-memory.dmp

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memory/864-157-0x00000000752CE000-0x00000000752CF000-memory.dmp

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memory/864-158-0x00000000752C0000-0x0000000075A70000-memory.dmp

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memory/864-159-0x00000000752C0000-0x0000000075A70000-memory.dmp

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