asyncrat | b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c

General

Target

b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
Size

170KB
MD5

75d9913194a42bcaf3c1d33167ab584f
SHA1

6c77a871e5c67f265ed5c7c0df7ebb63ba0d7da8
SHA256

b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c
SHA512

aace4ee38e7343515937c1586e5b41b299e2299b402e5f41bdca544a6afdbb54bd539a3f4472969163e138d6df5f63c67fe955b2c9c271545b3f19c92cdba383
SSDEEP

3072:2+STW8djpN6izj8mZwNVOHq0HyKqIPu/C9bcJ2cKPfV76+WpT:L8XN6W8mm/eHXPSC9b4MV

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/bot7734385742:AAHKSj_7Tq8Z69W2PH2MrHKyblq4d4tM3vE/sendMessage?chat_id=7571391032

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
behavioral2/memory/4756-1-0x0000000000280000-0x00000000002B0000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty
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\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File opened for modification	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File opened for modification	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File created	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Downloads\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File created	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Desktop\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File created	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Camera Roll\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File created	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Pictures\Saved Pictures\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
File created	C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Grabber\DRIVE-C\Users\Admin\Documents\desktop.ini	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.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
21	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 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
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.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	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	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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
1272	cmd.exe
3660	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 1272	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	89
PID 4756 wrote to memory of 1272	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	89
PID 4756 wrote to memory of 1272	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	89
PID 1272 wrote to memory of 448	1272	cmd.exe	91
PID 1272 wrote to memory of 448	1272	cmd.exe	91
PID 1272 wrote to memory of 448	1272	cmd.exe	91
PID 1272 wrote to memory of 3660	1272	cmd.exe	92
PID 1272 wrote to memory of 3660	1272	cmd.exe	92
PID 1272 wrote to memory of 3660	1272	cmd.exe	92
PID 1272 wrote to memory of 3880	1272	cmd.exe	93
PID 1272 wrote to memory of 3880	1272	cmd.exe	93
PID 1272 wrote to memory of 3880	1272	cmd.exe	93
PID 4756 wrote to memory of 444	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	94
PID 4756 wrote to memory of 444	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	94
PID 4756 wrote to memory of 444	4756	b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe	94
PID 444 wrote to memory of 3288	444	cmd.exe	96
PID 444 wrote to memory of 3288	444	cmd.exe	96
PID 444 wrote to memory of 3288	444	cmd.exe	96
PID 444 wrote to memory of 1572	444	cmd.exe	97
PID 444 wrote to memory of 1572	444	cmd.exe	97
PID 444 wrote to memory of 1572	444	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.exe
"C:\Users\Admin\AppData\Local\Temp\b3e3a88f9cb278546154087f76d8a2d55750592733b3e4d01c757f75972fa83c.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:4756
- 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:1272
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:448
- - 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:3660
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3880
- 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:444
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3288
- - 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:1572

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

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Local\a4fe4682e5a95fac9abc7d78ca88df61\Admin@HGNBWBGW_en-US\System\Process.txt

Filesize
4KB

MD5
ca7b5b648eed23e10ba5174797fd8763

SHA1
41d41141713cb83a551c0e502d554411ea7ff8de

SHA256
5f359b19bd0cf881980915369e6c48ef0fe73e5ce66f66be33f470261f09a04d

SHA512
42c97a32a1c6989bcb0313288cd406c0a66234e97eeb4eba4e35114917ae43bbc8abba1913ee4989e526e6236df7a942e26f2c449eaa13917fddb1e9ced74c6c

Download Submit
C:\Users\Admin\AppData\Local\dfb609e2a7ae0b0fab490ff79f15c6f7\msgid.dat

Filesize
4B

MD5
a6d5ab67798f3a675dc50c1d5b6c03d4

SHA1
2975f7aec55e5d7f098fe8c53c2f3088a5b5fcd4

SHA256
8eb23fb822ff0175c6ed79eabec412502399402fd7ea29ba26b8fcf999728b75

SHA512
5178d1f14e781533cdd8527e716f8d5f93d976d641a7dabb6b137766c9d41994dcb98a01017c6933e1a7e1301f20567b068638e135b80bd7d8614bfe07c2930d

Download Submit
memory/4756-3-0x0000000004CA0000-0x0000000004D06000-memory.dmp

Filesize
408KB

Download
memory/4756-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4756-122-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/4756-2-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4756-148-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4756-149-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download
memory/4756-151-0x00000000055D0000-0x0000000005662000-memory.dmp

Filesize
584KB

Download
memory/4756-152-0x0000000005C20000-0x00000000061C4000-memory.dmp

Filesize
5.6MB

Download
memory/4756-156-0x00000000056D0000-0x00000000056DA000-memory.dmp

Filesize
40KB

Download
memory/4756-1-0x0000000000280000-0x00000000002B0000-memory.dmp

Filesize
192KB

Download
memory/4756-162-0x0000000005770000-0x0000000005782000-memory.dmp

Filesize
72KB

Download
memory/4756-187-0x0000000074660000-0x0000000074E10000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads