asyncrat | 83fd2015a5499a8c2703d91aa047d0f099b85e8aa5ef9f2643a4eda4144a8772

Analysis

max time kernel
135s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

Executes dropped EXE 3 IoCs

pid	Process
1660	SolidAudio.exe
3068	SolidAudio.exe
2956	SolidAudio.exe

Loads dropped DLL 3 IoCs

pid	Process
2016	cmd.exe
1660	SolidAudio.exe
1660	SolidAudio.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 1660 set thread context of 2956	1660	SolidAudio.exe	44

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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1900	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
1724	schtasks.exe
1292	schtasks.exe
1452	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
1660	SolidAudio.exe
1660	SolidAudio.exe
1660	SolidAudio.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Token: SeDebugPrivilege	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
Token: SeDebugPrivilege	1660	SolidAudio.exe
Token: SeDebugPrivilege	2956	SolidAudio.exe

Suspicious use of WriteProcessMemory 50 IoCs

description	pid	Process	procid_target
PID 2736 wrote to memory of 1724	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	31
PID 2736 wrote to memory of 1724	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	31
PID 2736 wrote to memory of 1724	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	31
PID 2736 wrote to memory of 1724	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	31
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2736 wrote to memory of 2440	2736	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	33
PID 2440 wrote to memory of 2528	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	34
PID 2440 wrote to memory of 2528	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	34
PID 2440 wrote to memory of 2528	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	34
PID 2440 wrote to memory of 2528	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	34
PID 2440 wrote to memory of 2016	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	36
PID 2440 wrote to memory of 2016	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	36
PID 2440 wrote to memory of 2016	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	36
PID 2440 wrote to memory of 2016	2440	1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe	36
PID 2528 wrote to memory of 1292	2528	cmd.exe	38
PID 2528 wrote to memory of 1292	2528	cmd.exe	38
PID 2528 wrote to memory of 1292	2528	cmd.exe	38
PID 2528 wrote to memory of 1292	2528	cmd.exe	38
PID 2016 wrote to memory of 1900	2016	cmd.exe	39
PID 2016 wrote to memory of 1900	2016	cmd.exe	39
PID 2016 wrote to memory of 1900	2016	cmd.exe	39
PID 2016 wrote to memory of 1900	2016	cmd.exe	39
PID 2016 wrote to memory of 1660	2016	cmd.exe	40
PID 2016 wrote to memory of 1660	2016	cmd.exe	40
PID 2016 wrote to memory of 1660	2016	cmd.exe	40
PID 2016 wrote to memory of 1660	2016	cmd.exe	40
PID 1660 wrote to memory of 1452	1660	SolidAudio.exe	41
PID 1660 wrote to memory of 1452	1660	SolidAudio.exe	41
PID 1660 wrote to memory of 1452	1660	SolidAudio.exe	41
PID 1660 wrote to memory of 1452	1660	SolidAudio.exe	41
PID 1660 wrote to memory of 3068	1660	SolidAudio.exe	43
PID 1660 wrote to memory of 3068	1660	SolidAudio.exe	43
PID 1660 wrote to memory of 3068	1660	SolidAudio.exe	43
PID 1660 wrote to memory of 3068	1660	SolidAudio.exe	43
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44
PID 1660 wrote to memory of 2956	1660	SolidAudio.exe	44

C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
"C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HRjAKJCvzE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFE0E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1724
- C:\Users\Admin\AppData\Local\Temp\1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2440
- - 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:2528
  - - 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:1292
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD59.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2016
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1900
  - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
      "C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1660
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HRjAKJCvzE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA303.tmp"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1452
    - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
        
        "{path}"
        5⤵
        Executes dropped EXE
        
        PID:3068
    - - C:\Users\Admin\AppData\Local\Temp\SolidAudio.exe
        
        "{path}"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:2956

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

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\Temp\tmpD59.tmp.bat

Filesize
156B

MD5
d1215c21171d54e1825e40d35b1a4bca

SHA1
9bf0abb76d8f5709d7f68e1012e1f6e3a83cdc02

SHA256
38b4886109c45f93ce72e80bd38d75639b8c8d784fc63715145f5b1d7e387f6b

SHA512
718a72773715b92739bae911db5b377d018d6f20dd42673de5026dd572e9575f64dc46108504b57fcb1532555a434dd45c912348834fa62fe32c67b47100343d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFE0E.tmp

Filesize
1KB

MD5
95d1d3787c567e2c300828206efddad9

SHA1
afa3aa770eb8df1abde76d79f0beb9eb6d8281a7

SHA256
24a73f17b3547e93cc380d26e4ec5259051a9db2b2221745c430cd05f0651cbe

SHA512
a03cbc9bf28690430156439e4fc47e659a998597db22baa5e588a75f18408f350fae76227c50625cc2d54dc4d3611645056e405e1b893e2b329e6fc1d6ffd26a

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

Filesize
347KB

MD5
5bffb8d7b5c57858b0e815d4b8de8af0

SHA1
9024405039522915bba1139bbbddbb396e167393

SHA256
1b812937c39179ae1fbd25f82d70d98d3d718ded40c08357e4ec36a372cfba1a

SHA512
d2137bdd45e62705d09086c399013b71a5761ea8e3c8aacb556cca6471a27431a53b36f377109e44473724137114a068d59a136f4ad8b1e35ac3d5b92eea327c

Download Submit
memory/1660-42-0x00000000006D0000-0x00000000006E2000-memory.dmp

Filesize
72KB

Download
memory/1660-41-0x0000000001330000-0x000000000138E000-memory.dmp

Filesize
376KB

Download
memory/2440-36-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-25-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-27-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-19-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2440-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2440-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2736-6-0x00000000043F0000-0x0000000004456000-memory.dmp

Filesize
408KB

Download
memory/2736-5-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2736-26-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2736-7-0x00000000002A0000-0x00000000002B2000-memory.dmp

Filesize
72KB

Download
memory/2736-4-0x000000007475E000-0x000000007475F000-memory.dmp

Filesize
4KB

Download
memory/2736-0-0x000000007475E000-0x000000007475F000-memory.dmp

Filesize
4KB

Download
memory/2736-3-0x0000000000270000-0x000000000027A000-memory.dmp

Filesize
40KB

Download
memory/2736-2-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2736-1-0x0000000000960000-0x00000000009BE000-memory.dmp

Filesize
376KB

Download
memory/2956-56-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-60-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2956-59-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download