asyncrat | 5c43677f344e5f1bfaf29aeba0e69a020eef92b8555d6637f74de0e404a640f2

General

Target

47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
Size

1.5MB
MD5

26454b46bef46b885e8477922d3d08d4
SHA1

add2c041f12ce35e621dd3e162a61a7196eee48c
SHA256

47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282
SHA512

a9a41ccbc6b98cbfb7a0b6c2843f35fc895e6ec9556848ac4dd93e8e2a40b2079b906c2ee6fa90857cf267215cf2088c8f97828c9b3e40f80e6ad2e57d67da98
SSDEEP

49152:Ag6cnCiIkofSoKkVOUUi12RK27PB6yy0E6MenVeUQu:4VdSF3i12XDB62thUUj

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

190.123.44.184:8012

190.123.44.184:8201

190.123.44.184:3321

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

Checks computer location settings 2 TTPs 1 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe

Executes dropped EXE 1 IoCs

pid	Process
3924	DllHelper.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3924 set thread context of 4928	3924	DllHelper.exe	103

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHelper.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	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1712	cmd.exe
2704	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2704	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1156	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe
3924	DllHelper.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 544 wrote to memory of 1156	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	84
PID 544 wrote to memory of 1156	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	84
PID 544 wrote to memory of 1156	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	84
PID 544 wrote to memory of 3924	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	86
PID 544 wrote to memory of 3924	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	86
PID 544 wrote to memory of 3924	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	86
PID 544 wrote to memory of 1712	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	87
PID 544 wrote to memory of 1712	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	87
PID 544 wrote to memory of 1712	544	47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe	87
PID 1712 wrote to memory of 3496	1712	cmd.exe	89
PID 1712 wrote to memory of 3496	1712	cmd.exe	89
PID 1712 wrote to memory of 3496	1712	cmd.exe	89
PID 1712 wrote to memory of 2704	1712	cmd.exe	90
PID 1712 wrote to memory of 2704	1712	cmd.exe	90
PID 1712 wrote to memory of 2704	1712	cmd.exe	90
PID 3924 wrote to memory of 444	3924	DllHelper.exe	102
PID 3924 wrote to memory of 444	3924	DllHelper.exe	102
PID 3924 wrote to memory of 444	3924	DllHelper.exe	102
PID 3924 wrote to memory of 4928	3924	DllHelper.exe	103
PID 3924 wrote to memory of 4928	3924	DllHelper.exe	103
PID 3924 wrote to memory of 4928	3924	DllHelper.exe	103
PID 3924 wrote to memory of 4928	3924	DllHelper.exe	103
PID 3924 wrote to memory of 4928	3924	DllHelper.exe	103

C:\Users\Admin\AppData\Local\Temp\47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe
"C:\Users\Admin\AppData\Local\Temp\47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:544
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\system32\schtasks.exe" /create /tn COMSurrogate /f /sc onlogon /rl highest /tr "C:\Users\Admin\AppVerif\DllHelper.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1156
- C:\Users\Admin\AppVerif\DllHelper.exe
  "C:\Users\Admin\AppVerif\DllHelper.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3924
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    PID:444
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\47999d24a62260aceac07d042e065e8000173124ca9b8d13ac2516338b5cd282.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3496
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/544-1-0x0000000002480000-0x0000000002BC6000-memory.dmp

Filesize
7.3MB

Download
memory/544-3-0x0000000002BD0000-0x0000000002D4A000-memory.dmp

Filesize
1.5MB

Download
memory/544-10-0x0000000002480000-0x0000000002BC6000-memory.dmp

Filesize
7.3MB

Download
memory/3924-15-0x0000000002370000-0x0000000002AB2000-memory.dmp

Filesize
7.3MB

Download
memory/3924-17-0x0000000002AC0000-0x0000000002C2D000-memory.dmp

Filesize
1.4MB

Download
memory/3924-18-0x000000000E890000-0x000000000E942000-memory.dmp

Filesize
712KB

Download
memory/4928-19-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4928-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads