asyncrat | 2a8becdaca63e9d003e3111a01cc556d354cdb7b167c0b47e32f011bfb19654d

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
29/06/2026, 17:05

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General

Target
mko4.exe
Size 47KB
Sample260629-vmcldsat4v
SHA256 2a8becdaca63e9d003e3111a01cc556d354cdb7b167c0b47e32f011bfb19654d
MD5 f2648f2dcb5f92d8298de88e3fa68c7d
SHA1 c0bdb29c4144f9fc8680d4beb31128d3e4d20eb4
SHA512 9237da1e2673605a76f0cb185e6f0350cf6578760d63c2b6ab1eb08c3df7b5f0ae5a6777d9bb1466ecff42d35ec9008fc7fd6555ccb670e3f204ac9443dfee4b
SSDEEP 768:UuyJNTAoZjRWUJd9bmo2qLmOkA1on71aPILVrBRuIP0blLJGFvgM1G7lHr81oyFs:UuyJNTAGL2yZ1G7pLV5MblLIFIM1Gp8I
TLSH
T147233B003BE98167F2BE5F78ADF32145467AF2633603D6492CC442D75B13BC29A526FA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

tdmedia.com:8443
tdmedia.com:81
tdmedia.com:7878
tdmedia.com:8787
tdmedia.com:6789

Mutex

CfNs5llhzGBe

Attributes

delay
3
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000e00000001c543-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5824	svchost.exe
2436	svchost.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 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	mko4.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1064	timeout.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
2224	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe
3284	mko4.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3284	mko4.exe
Token: SeDebugPrivilege	5824	svchost.exe
Token: SeDebugPrivilege	5824	svchost.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 5664	3284	mko4.exe	88
PID 3284 wrote to memory of 1092	3284	mko4.exe	90
PID 5664 wrote to memory of 2224	5664	cmd.exe	92
PID 1092 wrote to memory of 1064	1092	cmd.exe	93
PID 1092 wrote to memory of 2436	1092	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\mko4.exe
"C:\Users\Admin\AppData\Local\Temp\mko4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5664
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2224
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp27E1.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1092
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1064
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2436

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5824

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

tmp27E1.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp27E1.tmp.bat
Size 151B
SHA256 22eea0430193964c585faf5e2d53828db830bc635f49663589d103389b0b43ca
MD5 9977e68e78573b63c823968fe1574dd8
SHA1 7d2f887afaca8e2cc9d9faf2d5642c33c9dffdde
SHA512 04def7f6507150b38d3febda82a3dbefc204b0f9a925865f2144640771cacfd7cbee174d684e57817590b412c48281f14ba2dae3bb23836cf581368546071249
TLSH
T1DAC02B5271C5EB1E3805149312FBD58DD2B36C5A3F40BF80C384401D23C045CF4EA342
MD5 SHA1 SHA512 TLSH

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 47KB
SHA256 2a8becdaca63e9d003e3111a01cc556d354cdb7b167c0b47e32f011bfb19654d
MD5 f2648f2dcb5f92d8298de88e3fa68c7d
SHA1 c0bdb29c4144f9fc8680d4beb31128d3e4d20eb4
SHA512 9237da1e2673605a76f0cb185e6f0350cf6578760d63c2b6ab1eb08c3df7b5f0ae5a6777d9bb1466ecff42d35ec9008fc7fd6555ccb670e3f204ac9443dfee4b
SSDEEP 768:UuyJNTAoZjRWUJd9bmo2qLmOkA1on71aPILVrBRuIP0blLJGFvgM1G7lHr81oyFs:UuyJNTAGL2yZ1G7pLV5MblLIFIM1Gp8I
TLSH
T147233B003BE98167F2BE5F78ADF32145467AF2633603D6492CC442D75B13BC29A526FA
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3284-0-0x0000000075072000-0x0000000075073000-memory.dmp

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memory/3284-1-0x0000000000880000-0x0000000000892000-memory.dmp

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memory/3284-2-0x0000000075060000-0x000000007581C000-memory.dmp

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memory/3284-3-0x0000000005400000-0x0000000005466000-memory.dmp

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memory/3284-4-0x0000000005810000-0x00000000058AC000-memory.dmp

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memory/3284-9-0x0000000075060000-0x000000007581C000-memory.dmp

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memory/5824-13-0x0000000074EF0000-0x00000000756AC000-memory.dmp

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memory/5824-15-0x0000000074EF0000-0x00000000756AC000-memory.dmp

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