asyncrat | 7c607526feaf1f53ac61c84b4d95fba30c7209b86a0426a1b8c72dbb94ec3747

General

Target

Server.exe
Size

175KB
MD5

afd5b15ef7e12b0c6469d5a6e853ba7c
SHA1

fd004564b996b2aa7838264322c39c3e043f83d6
SHA256

7c607526feaf1f53ac61c84b4d95fba30c7209b86a0426a1b8c72dbb94ec3747
SHA512

46dc3e43df92888461104f9d6579bae87fb62b318a7d0f01bad7ff643ffd649527c877769feb3fe4821ed7d99b2a45c2bdf198369be5a250cc4ad84d2ea106ce
SSDEEP

3072:3e8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTTwARE+WpCc:v6ewwIwQJ6vKX0c5MlYZ0b2w

Score

10^/10

asyncrat stormkitty default discovery persistence privilege_escalation rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

https://api.telegram.org/bot7926380598:AAFjRd_Ca7fbAplbMEhSA_VRzJUZjWDMlws/sendMessage?chat_id=6632870164

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
behavioral3/memory/3116-1-0x0000000000170000-0x00000000001A2000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Downloads MZ/PE file 1 IoCs

flow	pid	Process
15	1176	Process not Found

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) 8 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Server.exe
File opened for modification	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	Server.exe
File created	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Server.exe
File opened for modification	C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	Server.exe

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

Web Service

T1102

flow	ioc
18	pastebin.com
19	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
1	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

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 9 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	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
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	cmd.exe
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4460	MicrosoftEdgeUpdate.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
1404	cmd.exe
4456	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	Server.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Server.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe
3116	Server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3116	Server.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 3116 wrote to memory of 1404	3116	Server.exe	84
PID 3116 wrote to memory of 1404	3116	Server.exe	84
PID 3116 wrote to memory of 1404	3116	Server.exe	84
PID 1404 wrote to memory of 4480	1404	cmd.exe	86
PID 1404 wrote to memory of 4480	1404	cmd.exe	86
PID 1404 wrote to memory of 4480	1404	cmd.exe	86
PID 1404 wrote to memory of 4456	1404	cmd.exe	87
PID 1404 wrote to memory of 4456	1404	cmd.exe	87
PID 1404 wrote to memory of 4456	1404	cmd.exe	87
PID 1404 wrote to memory of 2920	1404	cmd.exe	88
PID 1404 wrote to memory of 2920	1404	cmd.exe	88
PID 1404 wrote to memory of 2920	1404	cmd.exe	88
PID 3116 wrote to memory of 1088	3116	Server.exe	89
PID 3116 wrote to memory of 1088	3116	Server.exe	89
PID 3116 wrote to memory of 1088	3116	Server.exe	89
PID 1088 wrote to memory of 2808	1088	cmd.exe	91
PID 1088 wrote to memory of 2808	1088	cmd.exe	91
PID 1088 wrote to memory of 2808	1088	cmd.exe	91
PID 1088 wrote to memory of 1112	1088	cmd.exe	92
PID 1088 wrote to memory of 1112	1088	cmd.exe	92
PID 1088 wrote to memory of 1112	1088	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- 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:3116
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Wi-Fi Discovery
  - Suspicious use of WriteProcessMemory
  PID:1404
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4480
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:4456
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2920
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1088
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2808
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:1112

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PG9lbSBwcm9kdWN0X21hbnVmYWN0dXJlcj0iIiBwcm9kdWN0X25hbWU9IiIvPjxleHAgZXRhZz0iJnF1b3Q7RSt4YkF6Nlk2c1UxMjg5YlM2cWw0VlJMYmtqZkJVR1RNSnNqckhyNDRpST0mcXVvdDsiLz48YXBwIGFwcGlkPSJ7OEE2OUQzNDUtRDU2NC00NjNjLUFGRjEtQTY5RDlFNTMwRjk2fSIgdmVyc2lvbj0iMTIzLjAuNjMxMi4xMjMiIG5leHR2ZXJzaW9uPSIiIGxhbmc9ImVuIiBicmFuZD0iR0dMUyIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjAiIGluc3RhbGxkYXRldGltZT0iMTczODk1NzQxMiIgb29iZV9pbnN0YWxsX3RpbWU9IjEzMzgzNDMwMDQxNTY3MDAwMCI-PGV2ZW50IGV2ZW50dHlwZT0iMzEiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjIxNzk4NjIiIHN5c3RlbV91cHRpbWVfdGlja3M9IjQ5OTQ3Njg3MDkiLz48L2FwcD48L3JlcXVlc3Q-
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:4460

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

2

T1016

Internet Connection Discovery

1

T1016.001

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\2ed6ce17ffff0865d9375a8a9f0b26ed\Admin@TRLDLHLZ_en-US\System\Process.txt

Filesize
4KB

MD5
701c1b6812f7cd493596fe5028e7c8e0

SHA1
cffa40efe5288bda797c448e1a1ea0c22df00d6a

SHA256
9c1be0f3eb1ee34058a9598e1e7c027ab6cfab9c315c185251b9e7c8c9bea9d3

SHA512
950da352f7a19488097afdcb8d0354f6e6287d63e8178c03534a6d7dfe28c35dbd63ab60294933cc832924f39688bdc7401469f45d4ba740b2e55864cc4d351f

Download Submit
C:\Users\Admin\AppData\Local\5f3179f77aba0f540b1bd7b810b99182\msgid.dat

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/3116-113-0x0000000074030000-0x00000000747E1000-memory.dmp

Filesize
7.7MB

Download
memory/3116-3-0x0000000004BE0000-0x0000000004C46000-memory.dmp

Filesize
408KB

Download
memory/3116-96-0x000000007403E000-0x000000007403F000-memory.dmp

Filesize
4KB

Download
memory/3116-0-0x000000007403E000-0x000000007403F000-memory.dmp

Filesize
4KB

Download
memory/3116-2-0x0000000074030000-0x00000000747E1000-memory.dmp

Filesize
7.7MB

Download
memory/3116-145-0x0000000005450000-0x00000000054E2000-memory.dmp

Filesize
584KB

Download
memory/3116-146-0x0000000074030000-0x00000000747E1000-memory.dmp

Filesize
7.7MB

Download
memory/3116-147-0x0000000005AA0000-0x0000000006046000-memory.dmp

Filesize
5.6MB

Download
memory/3116-151-0x0000000005570000-0x000000000557A000-memory.dmp

Filesize
40KB

Download
memory/3116-152-0x0000000074030000-0x00000000747E1000-memory.dmp

Filesize
7.7MB

Download
memory/3116-1-0x0000000000170000-0x00000000001A2000-memory.dmp

Filesize
200KB

Download
memory/3116-159-0x00000000050B0000-0x00000000050C2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads