asyncrat | 92ec5fd1a2c0aa1c565b93b5c2f8d9e472346014a0927182865b7c830aa3c7cd

Analysis

max time kernel
150s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 17:18

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General

Target

XBinderOutput.exe
Size

64KB
MD5

7ca5852a9d6d8c6d86ed1d0c0814a9f6
SHA1

692ef8e9600163e66508dd27cbbded5be2f9dda5
SHA256

92ec5fd1a2c0aa1c565b93b5c2f8d9e472346014a0927182865b7c830aa3c7cd
SHA512

3fb5c4a95b6c1fb4db20810d824192aa8b4dc35535151eaad02a60e0a24df38e452d52a8912fb8d114d7d0d58456763cf3eb739086fdb72f838f235e88f877b8
SSDEEP

1536:YzUmkjlbRxKrE99uExdTlM28i5pzDwl2qay:e50lb7KrE93Mw7wl2S

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

one-accordance.gl.at.ply.gg:9590

Attributes

delay
1
install
true
install_file
Windows Defender.exe
install_folder
%AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

66.66.146.74:9511

Mutex

nwJFeGdDXcL2

Attributes

delay
3
install
true
install_file
System32.exe
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

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x000b000000023b73-6.dat	family_asyncrat
behavioral2/files/0x000a000000023b76-16.dat	family_asyncrat

Checks computer location settings 2 TTPs 4 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Loader.exeStart.exeSystem32.exeXBinderOutput.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Loader.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Start.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	System32.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	XBinderOutput.exe

Executes dropped EXE 4 IoCs

Processes:

Loader.exeStart.exeWindows Defender.exeSystem32.exe

pid	Process
224	Loader.exe
2104	Start.exe
2960	Windows Defender.exe
4640	System32.exe

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

Processes:

Start.execmd.exeschtasks.exeSystem32.execmd.exetimeout.execmd.exetimeout.execmd.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Start.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	System32.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 3 IoCs

evasion

Processes:

timeout.exetimeout.exetimeout.exe

pid	Process
4464	timeout.exe
552	timeout.exe
4860	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exe

pid	Process
2980	schtasks.exe
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Loader.exeStart.exeWindows Defender.exe

pid	Process
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
224	Loader.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2104	Start.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe
2960	Windows Defender.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Loader.exeStart.exeWindows Defender.exeSystem32.exe

description	pid	Process
Token: SeDebugPrivilege	224	Loader.exe
Token: SeDebugPrivilege	2104	Start.exe
Token: SeDebugPrivilege	2960	Windows Defender.exe
Token: SeDebugPrivilege	4640	System32.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

XBinderOutput.exeLoader.execmd.execmd.exeStart.execmd.execmd.exeSystem32.execmd.execmd.exe

description	pid	Process	procid_target
PID 700 wrote to memory of 224	700	XBinderOutput.exe	83
PID 700 wrote to memory of 224	700	XBinderOutput.exe	83
PID 700 wrote to memory of 2104	700	XBinderOutput.exe	84
PID 700 wrote to memory of 2104	700	XBinderOutput.exe	84
PID 700 wrote to memory of 2104	700	XBinderOutput.exe	84
PID 224 wrote to memory of 388	224	Loader.exe	88
PID 224 wrote to memory of 388	224	Loader.exe	88
PID 224 wrote to memory of 5080	224	Loader.exe	90
PID 224 wrote to memory of 5080	224	Loader.exe	90
PID 5080 wrote to memory of 4464	5080	cmd.exe	92
PID 5080 wrote to memory of 4464	5080	cmd.exe	92
PID 388 wrote to memory of 2980	388	cmd.exe	93
PID 388 wrote to memory of 2980	388	cmd.exe	93
PID 2104 wrote to memory of 4136	2104	Start.exe	98
PID 2104 wrote to memory of 4136	2104	Start.exe	98
PID 2104 wrote to memory of 4136	2104	Start.exe	98
PID 2104 wrote to memory of 4556	2104	Start.exe	100
PID 2104 wrote to memory of 4556	2104	Start.exe	100
PID 2104 wrote to memory of 4556	2104	Start.exe	100
PID 4556 wrote to memory of 552	4556	cmd.exe	102
PID 4556 wrote to memory of 552	4556	cmd.exe	102
PID 4556 wrote to memory of 552	4556	cmd.exe	102
PID 4136 wrote to memory of 4104	4136	cmd.exe	103
PID 4136 wrote to memory of 4104	4136	cmd.exe	103
PID 4136 wrote to memory of 4104	4136	cmd.exe	103
PID 5080 wrote to memory of 2960	5080	cmd.exe	104
PID 5080 wrote to memory of 2960	5080	cmd.exe	104
PID 4556 wrote to memory of 4640	4556	cmd.exe	108
PID 4556 wrote to memory of 4640	4556	cmd.exe	108
PID 4556 wrote to memory of 4640	4556	cmd.exe	108
PID 4640 wrote to memory of 628	4640	System32.exe	117
PID 4640 wrote to memory of 628	4640	System32.exe	117
PID 4640 wrote to memory of 628	4640	System32.exe	117
PID 4640 wrote to memory of 4256	4640	System32.exe	119
PID 4640 wrote to memory of 4256	4640	System32.exe	119
PID 4640 wrote to memory of 4256	4640	System32.exe	119
PID 628 wrote to memory of 2240	628	cmd.exe	121
PID 628 wrote to memory of 2240	628	cmd.exe	121
PID 628 wrote to memory of 2240	628	cmd.exe	121
PID 4256 wrote to memory of 4860	4256	cmd.exe	122
PID 4256 wrote to memory of 4860	4256	cmd.exe	122
PID 4256 wrote to memory of 4860	4256	cmd.exe	122

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XBinderOutput.exe
"C:\Users\Admin\AppData\Local\Temp\XBinderOutput.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:700
- C:\Users\Admin\AppData\Local\Temp\Loader.exe
  "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender" /tr '"C:\Users\Admin\AppData\Roaming\Windows Defender.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:388
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "Windows Defender" /tr '"C:\Users\Admin\AppData\Roaming\Windows Defender.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2980
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8DE8.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:5080
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:4464
  - - C:\Users\Admin\AppData\Roaming\Windows Defender.exe
      "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2960
- C:\Users\Admin\AppData\Local\Temp\Start.exe
  "C:\Users\Admin\AppData\Local\Temp\Start.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4136
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:4104
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9829.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4556
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:552
  - - C:\Users\Admin\AppData\Roaming\System32.exe
      "C:\Users\Admin\AppData\Roaming\System32.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4640
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "System32"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:628
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /delete /f /tn "System32"
        6⤵
        System Location Discovery: System Language Discovery
        
        PID:2240
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCBA8.tmp.bat""
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4256
      - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        6⤵
        System Location Discovery: System Language Discovery
        Delays execution with timeout.exe
        
        PID:4860

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\Temp\Loader.exe

Filesize
63KB

MD5
aba726ec9183c855cfa084ee66f49f7f

SHA1
f12f9cf0920b0d3a76bb16027539ba0c13da035d

SHA256
fb680425e6edc0fa4d2fe526cd78d6ec69683fcafe57744993c8b7192b2c0a71

SHA512
a03a1c596e9570c6766d051d76e1a14894852cfa3889dd567f9e187be1055a49479355b8ed3a876a2934308aac945b232c1b206664614b66791ed0cc1f0b5c1f

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

Filesize
45KB

MD5
b733e729705bf66c1e5c66d97e247701

SHA1
25eec814abdf1fc6afe621e16aa89c4eb42616b9

SHA256
9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023

SHA512
09b59b8942c1409a03ca4e7f77c6007160af4d557386b766516dba392750869c017d0fd5d6fbbfcbb3e559a70ad42adcb498595df186be180cfc04e921d74320

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8DE8.tmp.bat

Filesize
160B

MD5
abad90da2679fe64f05dfae23928c56d

SHA1
0eebe95fbf61584b67b537646a013ed6a5d0545d

SHA256
aa958828000af00f7a1b5eddfa768124c4e2abd7946378cd4eefc84153a585dd

SHA512
9b239ceea31da4f6a652b894bb79200f291dbd356cd6d96659fbc76e73ec6ffd21befe4998e8cea23955055aeaa8a84f15911b07ca6a23ddb0474aff19d728a9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9829.tmp.bat

Filesize
152B

MD5
c26334459fabc4583558a82915575a4e

SHA1
0679a788f459a2fe3fc62ba54827f48e8a838a01

SHA256
f5e6f824c9041458aca8cbd02b9cf288ae216967423dcb843030435f8945b432

SHA512
e51a589fc8d575e5dde777850a094f936a65bf79c05298bb35ab38f8448d4dc44780abc49b27ffdaef558e47c45052c545bf666cba9ee7b11615aa8c5d1a0081

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCBA8.tmp.bat

Filesize
157B

MD5
d8452555ba11b232716a0bd3d7325014

SHA1
9f6f0e8dee0719c7b50fa5553453b4ae64bc599b

SHA256
8e86df5d9d97af4aca8824cd48c3b4643dc00fe1e493fa804cf85fac291b5c02

SHA512
b5124d4cee302fee549aa04b65cb7b783cc521c7f0a4c485560b9e195ada61933c6532fe6259269687cbff57839789f2e140b88feac8f084cf690670d0078e5f

Download Submit
memory/224-24-0x00000000002D0000-0x00000000002E6000-memory.dmp

Filesize
88KB

Download
memory/224-33-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/224-26-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/700-1-0x0000000000D40000-0x0000000000D56000-memory.dmp

Filesize
88KB

Download
memory/700-0-0x00007FFBC4243000-0x00007FFBC4245000-memory.dmp

Filesize
8KB

Download
memory/700-10-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/700-45-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/2104-27-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/2104-28-0x0000000000300000-0x0000000000312000-memory.dmp

Filesize
72KB

Download
memory/2104-35-0x0000000004BB0000-0x0000000004C4C000-memory.dmp

Filesize
624KB

Download
memory/2960-62-0x000000001B650000-0x000000001B66E000-memory.dmp

Filesize
120KB

Download
memory/2960-61-0x000000001B620000-0x000000001B654000-memory.dmp

Filesize
208KB

Download
memory/2960-60-0x000000001D300000-0x000000001D376000-memory.dmp

Filesize
472KB

Download
memory/4640-51-0x0000000005AC0000-0x0000000006064000-memory.dmp

Filesize
5.6MB

Download
memory/4640-55-0x0000000006520000-0x000000000653E000-memory.dmp

Filesize
120KB

Download
memory/4640-54-0x00000000010B0000-0x0000000001114000-memory.dmp

Filesize
400KB

Download
memory/4640-53-0x0000000001130000-0x00000000011A6000-memory.dmp

Filesize
472KB

Download
memory/4640-52-0x0000000005510000-0x0000000005576000-memory.dmp

Filesize
408KB

Download