asyncrat | 09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669

Analysis

max time kernel
143s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/07/2024, 07:16

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
395c4070233d059b2f1661fbdc6af0b4.exe
Size 514KB
Sample240701-h3slbssdkm
SHA256 09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669
MD5 395c4070233d059b2f1661fbdc6af0b4
SHA1 c4e8741e9c21d4a5d9a45138232da82c751cc390
SHA512 b3214c512ad6cde7f64ec1d9e8fab416917a248e77268f8516505d8f319168445e184c0182679ed8fdbc967fb6cb94b4e4fc4e2a760bc0f50aa154da81d6b3b9
SSDEEP 12288:IOK+cDtCaKVvTkLsDSdWg51DKWpw06aioXy3FMk:xGAZVL1D5W2Hckmk
MD5 SHA1 SHA512 SSDEEP

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

resource	yara_rule
behavioral2/memory/4192-13-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	MSBuild.exe
File created	C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	MSBuild.exe

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

Web Service

T1102

flow	ioc
53	pastebin.com
54	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
43	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

description	pid	Process	procid_target
PID 4556 set thread context of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91

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

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

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4556	395c4070233d059b2f1661fbdc6af0b4.exe
4556	395c4070233d059b2f1661fbdc6af0b4.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe
4192	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	395c4070233d059b2f1661fbdc6af0b4.exe
Token: SeDebugPrivilege	4192	MSBuild.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4556 wrote to memory of 4192	4556	395c4070233d059b2f1661fbdc6af0b4.exe	91
PID 4192 wrote to memory of 2580	4192	MSBuild.exe	101
PID 4192 wrote to memory of 2580	4192	MSBuild.exe	101
PID 4192 wrote to memory of 2580	4192	MSBuild.exe	101
PID 2580 wrote to memory of 4292	2580	cmd.exe	103
PID 2580 wrote to memory of 4292	2580	cmd.exe	103
PID 2580 wrote to memory of 4292	2580	cmd.exe	103
PID 2580 wrote to memory of 892	2580	cmd.exe	104
PID 2580 wrote to memory of 892	2580	cmd.exe	104
PID 2580 wrote to memory of 892	2580	cmd.exe	104
PID 2580 wrote to memory of 3560	2580	cmd.exe	105
PID 2580 wrote to memory of 3560	2580	cmd.exe	105
PID 2580 wrote to memory of 3560	2580	cmd.exe	105
PID 4192 wrote to memory of 2524	4192	MSBuild.exe	106
PID 4192 wrote to memory of 2524	4192	MSBuild.exe	106
PID 4192 wrote to memory of 2524	4192	MSBuild.exe	106
PID 2524 wrote to memory of 1264	2524	cmd.exe	108
PID 2524 wrote to memory of 1264	2524	cmd.exe	108
PID 2524 wrote to memory of 1264	2524	cmd.exe	108
PID 2524 wrote to memory of 3216	2524	cmd.exe	109
PID 2524 wrote to memory of 3216	2524	cmd.exe	109
PID 2524 wrote to memory of 3216	2524	cmd.exe	109

C:\Users\Admin\AppData\Local\Temp\395c4070233d059b2f1661fbdc6af0b4.exe
"C:\Users\Admin\AppData\Local\Temp\395c4070233d059b2f1661fbdc6af0b4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4556
- 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:4192
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2580
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:4292
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show profile
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      PID:892
  - - C:\Windows\SysWOW64\findstr.exe
      findstr All
      4⤵
      PID:3560
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2524
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      PID:1264
  - - C:\Windows\SysWOW64\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      PID:3216

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 --no-appcompat-clear --field-trial-handle=3684,i,14648456027158448592,4956305794400220180,262144 --variations-seed-version --mojo-platform-channel-handle=2668 /prefetch:8
1⤵
PID:1632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

msgid.dat

Path C:\Users\Admin\AppData\Local\a2db29681c17170709bc843333c42824\msgid.dat
Size 1B
SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
MD5 cfcd208495d565ef66e7dff9f98764da
SHA1 b6589fc6ab0dc82cf12099d1c2d40ab994e8410c
SHA512 31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99
MD5 SHA1 SHA512

Submit Download

Process.txt

Path C:\Users\Admin\AppData\Local\c1ef39315d8b11f4242f44984887bd84\Admin@GYLQWJCN_en-US\System\Process.txt
Size 4KB
SHA256 9527c2a464c4e0d6bc394a416bcd8d40e8f8a052fb7d4635027c6d70a735319f
MD5 51fa53843e7bfa020ec3922590a46eb2
SHA1 c5a94b3275142505f1d68df23e093e2333f1d175
SHA512 3da213e5cbeb99f44efaf2d0421b0c3f31495d073365b4956246bcce605b14702c54ba4350d385cba54a651775213c948a5128ddce3ba8c0e3a6471a7607172c
SSDEEP 48:z7zg9hEQ+LnMEXljzvzHkrBy23uvsPbcBf25huVFMlDq:zXcWQ+LnMolfbiy23RwE5huVqlW
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4192-13-0x0000000000400000-0x0000000000432000-memory.dmp

Download

memory/4192-201-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4192-200-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4192-199-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4192-176-0x0000000005B90000-0x0000000005BA2000-memory.dmp

Download

memory/4192-170-0x00000000059A0000-0x00000000059AA000-memory.dmp

Download

memory/4192-165-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4192-18-0x0000000004D60000-0x0000000004DC6000-memory.dmp

Download

memory/4192-17-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4192-15-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4556-6-0x0000000005890000-0x00000000058D4000-memory.dmp

Download

memory/4556-7-0x00000000059F0000-0x00000000059FA000-memory.dmp

Download

memory/4556-16-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4556-11-0x000000007517E000-0x000000007517F000-memory.dmp

Download

memory/4556-10-0x0000000009D30000-0x0000000009D36000-memory.dmp

Download

memory/4556-9-0x00000000070F0000-0x000000000710A000-memory.dmp

Download

memory/4556-8-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4556-12-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4556-0-0x000000007517E000-0x000000007517F000-memory.dmp

Download

memory/4556-5-0x0000000075170000-0x0000000075920000-memory.dmp

Download

memory/4556-4-0x00000000057F0000-0x000000000588C000-memory.dmp

Download

memory/4556-3-0x00000000056B0000-0x0000000005742000-memory.dmp

Download

memory/4556-2-0x0000000005BC0000-0x0000000006164000-memory.dmp

Download

memory/4556-1-0x0000000000D40000-0x0000000000DC4000-memory.dmp

Download