asyncrat | 33e6321d98c24b4effb796dc13f1655138dd78aa8c51f82ffa600ce7cb056421

Analysis

max time kernel
146s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2024, 11:00

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General

Target

a079cae4d890636c6efa593478a3f660N.exe
Size

120KB
MD5

a079cae4d890636c6efa593478a3f660
SHA1

9bc58bc0f01ed32acff41d5f1252029f347d29cb
SHA256

33e6321d98c24b4effb796dc13f1655138dd78aa8c51f82ffa600ce7cb056421
SHA512

47cc1928c53a63c948b4369edc8dcdc51eb721ed59f6dcfd3b69814f7655a51274c58634e70a931d09113a78fca81bfb5a754d329f63634f082bb6097285b07d
SSDEEP

384:bh3Z2HU/6wUNldJX7Un9NJzySa3XmIupYSgIXAnR+G:32HUcNFENJO32mRwIR

Score

10^/10

asyncrat stormkitty default credential_access discovery 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/bot7176059714:AAHLQAohqhJW7FGmgGL4d1LQXdAckM2UGto/sendMessage?chat_id=1498157292

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 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000235d1-43.dat	family_stormkitty
behavioral2/memory/3816-52-0x0000000000100000-0x0000000000132000-memory.dmp	family_stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00070000000235d1-43.dat	family_asyncrat

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	a079cae4d890636c6efa593478a3f660N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Superiority.exe

Executes dropped EXE 3 IoCs

pid	Process
1048	Superiority.exe
2852	SuperiorityLoader.exe
3816	423.exe

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\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	423.exe
File created	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	423.exe
File created	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	423.exe
File opened for modification	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	423.exe
File created	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	423.exe
File opened for modification	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	423.exe
File created	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	423.exe
File created	C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	423.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\Z:	SuperiorityLoader.exe
File opened (read-only)	\??\K:	SuperiorityLoader.exe
File opened (read-only)	\??\Q:	SuperiorityLoader.exe
File opened (read-only)	\??\T:	SuperiorityLoader.exe
File opened (read-only)	\??\V:	SuperiorityLoader.exe
File opened (read-only)	\??\W:	SuperiorityLoader.exe
File opened (read-only)	\??\B:	SuperiorityLoader.exe
File opened (read-only)	\??\J:	SuperiorityLoader.exe
File opened (read-only)	\??\U:	SuperiorityLoader.exe
File opened (read-only)	\??\X:	SuperiorityLoader.exe
File opened (read-only)	\??\Y:	SuperiorityLoader.exe
File opened (read-only)	\??\E:	SuperiorityLoader.exe
File opened (read-only)	\??\G:	SuperiorityLoader.exe
File opened (read-only)	\??\L:	SuperiorityLoader.exe
File opened (read-only)	\??\M:	SuperiorityLoader.exe
File opened (read-only)	\??\N:	SuperiorityLoader.exe
File opened (read-only)	\??\O:	SuperiorityLoader.exe
File opened (read-only)	\??\P:	SuperiorityLoader.exe
File opened (read-only)	\??\R:	SuperiorityLoader.exe
File opened (read-only)	\??\A:	SuperiorityLoader.exe
File opened (read-only)	\??\H:	SuperiorityLoader.exe
File opened (read-only)	\??\I:	SuperiorityLoader.exe
File opened (read-only)	\??\S:	SuperiorityLoader.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
60	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 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

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Superiority.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	423.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	findstr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4508	cmd.exe
2452	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	423.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	423.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings	Superiority.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2852	SuperiorityLoader.exe
2852	SuperiorityLoader.exe
2852	SuperiorityLoader.exe
2852	SuperiorityLoader.exe
2852	SuperiorityLoader.exe
2852	SuperiorityLoader.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe
3816	423.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3816	423.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2852	SuperiorityLoader.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 1048	2716	a079cae4d890636c6efa593478a3f660N.exe	102
PID 2716 wrote to memory of 1048	2716	a079cae4d890636c6efa593478a3f660N.exe	102
PID 2716 wrote to memory of 1048	2716	a079cae4d890636c6efa593478a3f660N.exe	102
PID 1048 wrote to memory of 4204	1048	Superiority.exe	104
PID 1048 wrote to memory of 4204	1048	Superiority.exe	104
PID 1048 wrote to memory of 4204	1048	Superiority.exe	104
PID 1048 wrote to memory of 2852	1048	Superiority.exe	105
PID 1048 wrote to memory of 2852	1048	Superiority.exe	105
PID 1048 wrote to memory of 3816	1048	Superiority.exe	108
PID 1048 wrote to memory of 3816	1048	Superiority.exe	108
PID 1048 wrote to memory of 3816	1048	Superiority.exe	108
PID 3816 wrote to memory of 4508	3816	423.exe	110
PID 3816 wrote to memory of 4508	3816	423.exe	110
PID 3816 wrote to memory of 4508	3816	423.exe	110
PID 4508 wrote to memory of 4976	4508	cmd.exe	112
PID 4508 wrote to memory of 4976	4508	cmd.exe	112
PID 4508 wrote to memory of 4976	4508	cmd.exe	112
PID 4508 wrote to memory of 2452	4508	cmd.exe	113
PID 4508 wrote to memory of 2452	4508	cmd.exe	113
PID 4508 wrote to memory of 2452	4508	cmd.exe	113
PID 4508 wrote to memory of 4164	4508	cmd.exe	114
PID 4508 wrote to memory of 4164	4508	cmd.exe	114
PID 4508 wrote to memory of 4164	4508	cmd.exe	114
PID 3816 wrote to memory of 3836	3816	423.exe	115
PID 3816 wrote to memory of 3836	3816	423.exe	115
PID 3816 wrote to memory of 3836	3816	423.exe	115
PID 3836 wrote to memory of 1532	3836	cmd.exe	117
PID 3836 wrote to memory of 1532	3836	cmd.exe	117
PID 3836 wrote to memory of 1532	3836	cmd.exe	117
PID 3836 wrote to memory of 2224	3836	cmd.exe	118
PID 3836 wrote to memory of 2224	3836	cmd.exe	118
PID 3836 wrote to memory of 2224	3836	cmd.exe	118

C:\Users\Admin\AppData\Local\Temp\a079cae4d890636c6efa593478a3f660N.exe
"C:\Users\Admin\AppData\Local\Temp\a079cae4d890636c6efa593478a3f660N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Roaming\Superiority.exe
  "C:\Users\Admin\AppData\Roaming\Superiority.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\msComBrowserdrivercrt\XVggw8UvBKM1risQ.vbe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4204
- - C:\msComBrowserdrivercrt\SuperiorityLoader.exe
    "C:\msComBrowserdrivercrt\SuperiorityLoader.exe"
    3⤵
    - Executes dropped EXE
    - Enumerates connected drives
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    PID:2852
- - C:\msComBrowserdrivercrt\423.exe
    "C:\msComBrowserdrivercrt\423.exe"
    3⤵
    - Executes dropped EXE
    - Drops desktop.ini file(s)
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3816
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Wi-Fi Discovery
      Suspicious use of WriteProcessMemory
      PID:4508
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4976
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh wlan show profile
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        System Network Configuration Discovery: Wi-Fi Discovery
        
        PID:2452
    - - C:\Windows\SysWOW64\findstr.exe
        
        findstr All
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4164
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3836
    - - C:\Windows\SysWOW64\chcp.com
        
        chcp 65001
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1532
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh wlan show networks mode=bssid
        5⤵
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        
        PID:2224

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 --field-trial-handle=4400,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=1044 /prefetch:8
1⤵
PID:3280

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Wi-Fi Discovery

T1016.002

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\14e42aa695ddfa31ff5a764fc6b5f882\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\bc12c5b12918061caa4a8f7825168fa6\Admin@SYMRKCCU_en-US\System\Process.txt

Filesize
4KB

MD5
1364c60d304a0f718c86a66618b5a08f

SHA1
087689918bcd6d3feea0335d8dec29793707cc98

SHA256
f8091af78bf50c010e0a523106e3fba8e98b936c62f4cd408b7defb7b9e1bea6

SHA512
46f762326f8e9f17c256ad9368312e68efeee98a857a506f05d7b7e8d7db4382e9c6aee2aceae6affcbafd473659bc63b17bcbd74ae39240c8a2b5f272abea20

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

Filesize
2.4MB

MD5
ba5dff2a76bc704537ed03ab69c37e68

SHA1
53fd46f75852f42ad751faea1442eb2defe06f95

SHA256
f7f95eb014eb1bf6e6e407337c711f5f12de1e8597e3e2ed4a550af7b6933ea0

SHA512
1fae12ae2c703b6df480add6de1f8cec647f400058f27da3ce7d4043cfabfac9a325283ad17662f24dc76d32ba6266c8091a26b1af26a64ff641cb25ecc97fe4

Download Submit
C:\msComBrowserdrivercrt\423.exe

Filesize
175KB

MD5
681b156c2e17de536e4a087304366f38

SHA1
c7f25d8edbc735b883a596b907a9b691ffa8e61d

SHA256
4168d869c228ed66c4645bfd8aed5df82d02d71679f44a9a6621c37abb301da8

SHA512
54b9d74c3b30f2a84fcc3377a5547fb7d12bdcad51f434491df56864519c1e11b7a90c550a147e6bf3fa5b0df9085a0c25a73e8000ce03b3abbe8c48cc5a78a1

Download Submit
C:\msComBrowserdrivercrt\SuperiorityLoader.exe

Filesize
47KB

MD5
3396277dbe3d29d4586ec1058340fb87

SHA1
f1dbae47689f5932aeb788e89fd6af443090fe77

SHA256
47ee4512d50b54d78ca0e7b7204256bdb546cffd580320cc131d572a5af2a97d

SHA512
c8976d769815100a2fd7735535ca4716fe85499d8a1163a4b3fb865b30270e027113c5299044bf52d39bf45d4b4e32164e66972051345ae26d8b224450195b3e

Download Submit
C:\msComBrowserdrivercrt\XVggw8UvBKM1risQ.vbe

Filesize
227B

MD5
b210756c259b3359c99b28588ecab7b5

SHA1
9f537cfa395fe0f42f00bd90b1c869ec6a6caec5

SHA256
159a22b81656b9049e28400e3c9017f104cfe1f282367522edb74d2a045513ec

SHA512
ba5f4c35d16ab0fe4ba205ad29e27a780152b84d6e05f504fa9a6cb6c0ed428a052e34c209bd2cfad198c7ee0b0ad549dafdb3a6b3878c290d1c8457248bec06

Download Submit
memory/3816-53-0x0000000004A10000-0x0000000004A76000-memory.dmp

Filesize
408KB

Download
memory/3816-52-0x0000000000100000-0x0000000000132000-memory.dmp

Filesize
200KB

Download
memory/3816-211-0x00000000055A0000-0x0000000005632000-memory.dmp

Filesize
584KB

Download
memory/3816-212-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/3816-216-0x0000000005590000-0x000000000559A000-memory.dmp

Filesize
40KB

Download
memory/3816-222-0x0000000005700000-0x0000000005712000-memory.dmp

Filesize
72KB

Download