asyncrat | 83fd2015a5499a8c2703d91aa047d0f099b85e8aa5ef9f2643a4eda4144a8772

Analysis

max time kernel
136s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2025, 07:56

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General

Target

1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Size

347KB
MD5

5bffb8d7b5c57858b0e815d4b8de8af0
SHA1

9024405039522915bba1139bbbddbb396e167393
SHA256

1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a
SHA512

d2137bdd45e62705d09086c399013b71a5761ea8e3c8aacb556cca6471a27431a53b36f377109e44473724137114a068d59a136f4ad8b1e35ac3d5b92eea327c
SSDEEP

6144:YGTo8tqR6SuFSO86L/3NvZ12PbkOXJ/1v3D3Rl/ojdVhjAdHf:Rhq4FM6DvmVt1vz3Rl/ojdVhjAp

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

46.183.220.52:6200

sirbanty.ddnsgeek.com:6200

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
SolidAudio.exe
install_folder
%Temp%

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 3 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-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	SolidAudio.exe
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe

Executes dropped EXE 3 IoCs

pid	Process
1216	SolidAudio.exe
4848	SolidAudio.exe
4232	SolidAudio.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4072 set thread context of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 1216 set thread context of 4232	1216	SolidAudio.exe	119

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 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	SolidAudio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SolidAudio.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3640	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3708	schtasks.exe
3772	schtasks.exe
2364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
1216	SolidAudio.exe
1216	SolidAudio.exe
1216	SolidAudio.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Token: SeDebugPrivilege	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Token: SeDebugPrivilege	1216	SolidAudio.exe
Token: SeDebugPrivilege	4232	SolidAudio.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 4072 wrote to memory of 3708	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	103
PID 4072 wrote to memory of 3708	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	103
PID 4072 wrote to memory of 3708	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	103
PID 4072 wrote to memory of 2904	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	105
PID 4072 wrote to memory of 2904	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	105
PID 4072 wrote to memory of 2904	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	105
PID 4072 wrote to memory of 4820	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	106
PID 4072 wrote to memory of 4820	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	106
PID 4072 wrote to memory of 4820	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	106
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 4072 wrote to memory of 2164	4072	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	107
PID 2164 wrote to memory of 8	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	108
PID 2164 wrote to memory of 8	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	108
PID 2164 wrote to memory of 8	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	108
PID 2164 wrote to memory of 2696	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	110
PID 2164 wrote to memory of 2696	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	110
PID 2164 wrote to memory of 2696	2164	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	110
PID 8 wrote to memory of 3772	8	cmd.exe	112
PID 8 wrote to memory of 3772	8	cmd.exe	112
PID 8 wrote to memory of 3772	8	cmd.exe	112
PID 2696 wrote to memory of 3640	2696	cmd.exe	113
PID 2696 wrote to memory of 3640	2696	cmd.exe	113
PID 2696 wrote to memory of 3640	2696	cmd.exe	113
PID 2696 wrote to memory of 1216	2696	cmd.exe	114
PID 2696 wrote to memory of 1216	2696	cmd.exe	114
PID 2696 wrote to memory of 1216	2696	cmd.exe	114
PID 1216 wrote to memory of 2364	1216	SolidAudio.exe	116
PID 1216 wrote to memory of 2364	1216	SolidAudio.exe	116
PID 1216 wrote to memory of 2364	1216	SolidAudio.exe	116
PID 1216 wrote to memory of 4848	1216	SolidAudio.exe	118
PID 1216 wrote to memory of 4848	1216	SolidAudio.exe	118
PID 1216 wrote to memory of 4848	1216	SolidAudio.exe	118
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119
PID 1216 wrote to memory of 4232	1216	SolidAudio.exe	119

C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
"C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HRjAKJCvzE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp38ED.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3708
- C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
  "{path}"
  2⤵
  PID:2904
- C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
  "{path}"
  2⤵
  PID:4820
- C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SolidAudio" /tr '"C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:8
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "SolidAudio" /tr '"C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3772
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4A52.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:3640
  - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
      "C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1216
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HRjAKJCvzE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE21E.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2364
    - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
        
        "{path}"
        5⤵
        Executes dropped EXE
        
        PID:4848
    - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
        
        "{path}"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:4232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe.log

Filesize
1KB

MD5
84e77a587d94307c0ac1357eb4d3d46f

SHA1
83cc900f9401f43d181207d64c5adba7a85edc1e

SHA256
e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

SHA512
aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

Download Submit
C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe

Filesize
347KB

MD5
5bffb8d7b5c57858b0e815d4b8de8af0

SHA1
9024405039522915bba1139bbbddbb396e167393

SHA256
1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a

SHA512
d2137bdd45e62705d09086c399013b71a5761ea8e3c8aacb556cca6471a27431a53b36f377109e44473724137114a068d59a136f4ad8b1e35ac3d5b92eea327c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp38ED.tmp

Filesize
1KB

MD5
fd8efe3cf9b13698b35915172bf90802

SHA1
9fe41c0e49ea04afd23c0d6f5837cb1d0395d2b1

SHA256
f329641f5f7c6b53ea58e934212af9aa9558cce4c2d9a65ee9f0f7965b6efd78

SHA512
1e2d575aa79088f7b8fe72a031f7be8148f55186adfb3223d549873b3954f1158a201acc4ce2c97a7bacf8734885d8406d478cdfb4dd86b71365513556e07a7c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4A52.tmp.bat

Filesize
157B

MD5
163ba3d894e1da5d80ccfc6a83c5de7a

SHA1
59467c06735d4048f736ff55691c3c7a0ca6fa7d

SHA256
73204ff3645389fb6a9fd36292732da2fe29228202780f87ec1f36d9f7b71ed9

SHA512
b26babf94da620a95ee1175fd9f5227ffba7b9fcc23360bafbe0886c6d5c7140acf6a4785e3bc523edf1d326fe6feabb55adbd350fb77b28a2e2551cc681a05d

Download Submit
memory/1216-29-0x00000000055F0000-0x0000000005602000-memory.dmp

Filesize
72KB

Download
memory/2164-24-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/2164-20-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/2164-18-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/2164-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4072-10-0x0000000006480000-0x00000000064E6000-memory.dmp

Filesize
408KB

Download
memory/4072-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/4072-11-0x0000000008A40000-0x0000000008A52000-memory.dmp

Filesize
72KB

Download
memory/4072-9-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/4072-8-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/4072-7-0x00000000053A0000-0x00000000053AA000-memory.dmp

Filesize
40KB

Download
memory/4072-19-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/4072-6-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/4072-5-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/4072-4-0x0000000005060000-0x00000000050FC000-memory.dmp

Filesize
624KB

Download
memory/4072-3-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/4072-2-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/4072-1-0x0000000000530000-0x000000000058E000-memory.dmp

Filesize
376KB

Download