asyncrat | ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70b

Analysis

max time kernel
119s
max time network
29s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 12:20

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General

Target

ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe
Size

601KB
MD5

bc46bbd5fe4f4757b7ad1a5d21c206e0
SHA1

a27abe34871d10067cf7584abe42a8f39a5f7f5c
SHA256

ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70b
SHA512

a839e50825b0098736baba544ee345764160ebc3d35d5f966dcfe621217edf0753bba96677e3d1f2f1782cb78c3b7d2a0107b9d5ac1a0e1eb34d6a08848aa162
SSDEEP

6144:EYM2tZrIHSGn6MCInzvZEgpEIQIl4yLA8bBHP4+m46RtHK:EIrIHFnfCyhEqll4wAJ+mXRtH

Score

10^/10

asyncrat stormkitty default discovery execution persistence privilege_escalation 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/bot5048659266:AAFJQRcRFhUzXFoT4Bj40d1LFuM0IyNZ7y4/sendMessage?chat_id=5038570348

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
Asyncrat family
asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral1/memory/2356-32-0x00000000006A0000-0x00000000006D2000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2356-32-0x00000000006A0000-0x00000000006D2000-memory.dmp	family_asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
672	powershell.exe
3008	powershell.exe

Deletes itself 1 IoCs

pid	Process
2040	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2356	SearchApp.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	SearchApp.exe
File opened for modification	C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	SearchApp.exe
File created	C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	SearchApp.exe
File created	C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	SearchApp.exe
File created	C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	SearchApp.exe

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

Web Service

T1102

flow	ioc
6	discord.com
7	discord.com

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com
9	icanhazip.com

Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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 queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
1980	cmd.exe
396	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	SearchApp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	SearchApp.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1696	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
672	powershell.exe
3008	powershell.exe
2356	SearchApp.exe
2356	SearchApp.exe
2356	SearchApp.exe
2356	SearchApp.exe
2356	SearchApp.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe
Token: SeBackupPrivilege	2892	vssvc.exe
Token: SeRestorePrivilege	2892	vssvc.exe
Token: SeAuditPrivilege	2892	vssvc.exe
Token: SeDebugPrivilege	672	powershell.exe
Token: SeDebugPrivilege	3008	powershell.exe
Token: SeDebugPrivilege	2356	SearchApp.exe
Token: SeDebugPrivilege	2356	SearchApp.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 672	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	34
PID 2524 wrote to memory of 672	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	34
PID 2524 wrote to memory of 672	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	34
PID 2524 wrote to memory of 3008	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	36
PID 2524 wrote to memory of 3008	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	36
PID 2524 wrote to memory of 3008	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	36
PID 2524 wrote to memory of 2040	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	39
PID 2524 wrote to memory of 2040	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	39
PID 2524 wrote to memory of 2040	2524	ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe	39
PID 2040 wrote to memory of 1696	2040	cmd.exe	41
PID 2040 wrote to memory of 1696	2040	cmd.exe	41
PID 2040 wrote to memory of 1696	2040	cmd.exe	41
PID 2868 wrote to memory of 2356	2868	taskeng.exe	42
PID 2868 wrote to memory of 2356	2868	taskeng.exe	42
PID 2868 wrote to memory of 2356	2868	taskeng.exe	42
PID 2356 wrote to memory of 1980	2356	SearchApp.exe	44
PID 2356 wrote to memory of 1980	2356	SearchApp.exe	44
PID 2356 wrote to memory of 1980	2356	SearchApp.exe	44
PID 1980 wrote to memory of 2628	1980	cmd.exe	46
PID 1980 wrote to memory of 2628	1980	cmd.exe	46
PID 1980 wrote to memory of 2628	1980	cmd.exe	46
PID 1980 wrote to memory of 396	1980	cmd.exe	47
PID 1980 wrote to memory of 396	1980	cmd.exe	47
PID 1980 wrote to memory of 396	1980	cmd.exe	47
PID 1980 wrote to memory of 2596	1980	cmd.exe	48
PID 1980 wrote to memory of 2596	1980	cmd.exe	48
PID 1980 wrote to memory of 2596	1980	cmd.exe	48
PID 2356 wrote to memory of 1768	2356	SearchApp.exe	49
PID 2356 wrote to memory of 1768	2356	SearchApp.exe	49
PID 2356 wrote to memory of 1768	2356	SearchApp.exe	49
PID 1768 wrote to memory of 2288	1768	cmd.exe	51
PID 1768 wrote to memory of 2288	1768	cmd.exe	51
PID 1768 wrote to memory of 2288	1768	cmd.exe	51
PID 1768 wrote to memory of 1916	1768	cmd.exe	52
PID 1768 wrote to memory of 1916	1768	cmd.exe	52
PID 1768 wrote to memory of 1916	1768	cmd.exe	52

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe
"C:\Users\Admin\AppData\Local\Temp\ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70bN.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\SearchApp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SearchApp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3008
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpBFE5.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1696

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2892

C:\Windows\system32\taskeng.exe
taskeng.exe {A7071B48-EEB6-4ABF-A8B3-CC28150DF60B} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Roaming\SearchApp.exe
  C:\Users\Admin\AppData\Roaming\SearchApp.exe
  2⤵
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
    3⤵
    - System Network Configuration Discovery: Wi-Fi Discovery
    - Suspicious use of WriteProcessMemory
    PID:1980
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2628
  - - C:\Windows\system32\netsh.exe
      netsh wlan show profile
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      System Network Configuration Discovery: Wi-Fi Discovery
      PID:396
  - - C:\Windows\system32\findstr.exe
      findstr All
      4⤵
      PID:2596
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1768
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2288
  - - C:\Windows\system32\netsh.exe
      netsh wlan show networks mode=bssid
      4⤵
      Event Triggered Execution: Netsh Helper DLL
      PID:1916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\652307a61cc0458b6d86878c31512a79\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\9e499e3fea56ef224d09d8bee80fd77b\Admin@PIDEURYY_en-US\System\Process.txt

Filesize
1KB

MD5
7814eca448ff38a5e441c5733708502e

SHA1
6786e1e387bdd35ff2f3d2d73fa83ad48470a43f

SHA256
89be88ff712fbc1d55d2774e94d57b29fbb97734a8c0f8163ae51c88558b4428

SHA512
dd810cc6671fe1d3c2dfa19bcd58a69df3733e8dd08ad4c6c9a08468cc5d5591f4be314f698539d542f598e849e122694b8da2283114fa7286cbcaad05f04b1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBFE5.tmp.bat

Filesize
217B

MD5
f55b9f577f49261d69cbcc785a173438

SHA1
c803a503e042aa2b4836b90913ce68ce75bce447

SHA256
2b42bb5a1f3c0662cc116ed8ba55245ce90349d550b2d3b4c356c04ec734b93a

SHA512
6b6c4e65039559335841b1d8aa5a438eba1fab285a937ea138f300ec2dcd98ddeb963302c61bb8f82c162b1c2a88ecd40844f368fbac09ef375d4d3a9e88d928

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
9e3af005895d5aa6213aaac52e4d6f4c

SHA1
e51e5f20687a4f818acc9599e1675df4b80dc8fb

SHA256
c9923ab6a634222b3ab90ac11ae513bad0d7b374b2428f5335fd494e5096b720

SHA512
aa5772b9197455c6b4210e7f703585397afc76c091c1f0c11d516fe13d6f013a0ea5a206bf9d91d6869b4335bad4184bda6f45d99e533ea953a8a5e228303d44

Download Submit
C:\Users\Admin\AppData\Roaming\SearchApp.exe

Filesize
601KB

MD5
bc46bbd5fe4f4757b7ad1a5d21c206e0

SHA1
a27abe34871d10067cf7584abe42a8f39a5f7f5c

SHA256
ca3c0d446c24ff7deec82756789d84b6e33b0f8c7d5b0100c31afb30663ee70b

SHA512
a839e50825b0098736baba544ee345764160ebc3d35d5f966dcfe621217edf0753bba96677e3d1f2f1782cb78c3b7d2a0107b9d5ac1a0e1eb34d6a08848aa162

Download Submit
memory/672-7-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/672-8-0x00000000026E0000-0x00000000026E8000-memory.dmp

Filesize
32KB

Download
memory/2356-31-0x00000000009D0000-0x0000000000A6C000-memory.dmp

Filesize
624KB

Download
memory/2356-32-0x00000000006A0000-0x00000000006D2000-memory.dmp

Filesize
200KB

Download
memory/2524-18-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2524-27-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2524-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/2524-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2524-1-0x0000000000A20000-0x0000000000ABC000-memory.dmp

Filesize
624KB

Download
memory/3008-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/3008-14-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download