asyncrat | 20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b

Analysis

max time kernel
145s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18-04-2024 19:38

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General

Target

20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
Size

162KB
MD5

48f3578add712ad477de43a61079f6e2
SHA1

4b6a625d66abee564bc3fc0a4927ebceab88a0e7
SHA256

20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b
SHA512

e9d7e06a61e187538313c0935b05ce453afd77f9c04046112818c2044ae6a66c6bb5b2c3aaf88eadeedda2648b2162dce5171eea9e7e2b4fb0dc1b0fe1f5b149
SSDEEP

3072:qeIM6syPKcys1v6LCNrhwBafeQt0siX7mIBbVaibI+wARE+WpC5:V6syicyst6LCwAfeJlr1xvb1

Score

10^/10

asyncrat stormkitty rat spyware stealer

Malware Config

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/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	family_stormkitty

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

Detects executables (downlaoders) containing URLs to raw contents of a paste 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawPaste_URL

Detects executables containing URLs to raw contents of a Github gist 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL

Detects executables referencing Discord tokens regular expressions 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Discord_Regex

Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing credit card regular expressions 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_CC_Regex

Detects executables referencing many VPN software clients. Observed in infosteslers 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_VPN

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables using Telegram Chat Bot 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

Detects executables with interest in wireless interface using netsh 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon

Detects file containing reversed ASEP Autorun registry keys 1 IoCs

resource	yara_rule
behavioral2/memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

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 created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File opened for modification	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File opened for modification	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
File created	C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe

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

Web Service

T1102

flow	ioc
36	pastebin.com
37	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.

flow	ioc
26	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	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 4936	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	92
PID 2520 wrote to memory of 4936	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	92
PID 2520 wrote to memory of 4936	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	92
PID 4936 wrote to memory of 1688	4936	cmd.exe	94
PID 4936 wrote to memory of 1688	4936	cmd.exe	94
PID 4936 wrote to memory of 1688	4936	cmd.exe	94
PID 4936 wrote to memory of 3660	4936	cmd.exe	95
PID 4936 wrote to memory of 3660	4936	cmd.exe	95
PID 4936 wrote to memory of 3660	4936	cmd.exe	95
PID 4936 wrote to memory of 2812	4936	cmd.exe	96
PID 4936 wrote to memory of 2812	4936	cmd.exe	96
PID 4936 wrote to memory of 2812	4936	cmd.exe	96
PID 2520 wrote to memory of 3960	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	97
PID 2520 wrote to memory of 3960	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	97
PID 2520 wrote to memory of 3960	2520	20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe	97
PID 3960 wrote to memory of 4188	3960	cmd.exe	99
PID 3960 wrote to memory of 4188	3960	cmd.exe	99
PID 3960 wrote to memory of 4188	3960	cmd.exe	99
PID 3960 wrote to memory of 1912	3960	cmd.exe	100
PID 3960 wrote to memory of 1912	3960	cmd.exe	100
PID 3960 wrote to memory of 1912	3960	cmd.exe	100

C:\Users\Admin\AppData\Local\Temp\20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe
"C:\Users\Admin\AppData\Local\Temp\20209b1782561498aae9640d8032d3663636c0f10a094dd1b69f413097d7c41b.exe"
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:1688
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:3660
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:2812
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3960
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4188
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:1912

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\a4c6399717db92ed687fc897f834ecd1\Admin@QUBJEIMO_en-US\System\Process.txt

Filesize
4KB

MD5
6e52b88f490871e325b130b65f871520

SHA1
00fd7fc1d74ce29748be7b9905a7f85b841e1525

SHA256
542c926bad300697ba39519291dd4f79cd11960b715d7bab30e160a7db49c5bf

SHA512
95788620169540091f79bc15b8e5f866b9a63384f83cf40169f75768848b190f76a8f08d7abff6632278e7b2c97e32f2df4bb9c168815fd8ac77b7605a41bcaa

Download Submit
C:\Users\Admin\AppData\Local\afff578373bd878288baa0e41a2c5c3b\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2520-3-0x0000000004FB0000-0x0000000005016000-memory.dmp

Filesize
408KB

Download
memory/2520-1-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2520-2-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/2520-150-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/2520-152-0x00000000059A0000-0x0000000005A32000-memory.dmp

Filesize
584KB

Download
memory/2520-153-0x0000000005FF0000-0x0000000006594000-memory.dmp

Filesize
5.6MB

Download
memory/2520-157-0x0000000005CC0000-0x0000000005CCA000-memory.dmp

Filesize
40KB

Download
memory/2520-0-0x0000000000460000-0x000000000048E000-memory.dmp

Filesize
184KB

Download
memory/2520-163-0x0000000005CD0000-0x0000000005CE2000-memory.dmp

Filesize
72KB

Download
memory/2520-188-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2520-189-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download
memory/2520-190-0x0000000002A80000-0x0000000002A90000-memory.dmp

Filesize
64KB

Download