asyncrat | c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
07/09/2026, 10:40

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General

Target
c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
Size 45KB
Sample260907-mqqnesgd39
SHA256 c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8
MD5 617f4f6e08002836e77cf3d828d8cda7
SHA1 ff2fb96e4e1e2c29ef30dd5e713b7ba6017517c8
SHA512 7c7d65e3630a94e66290a800265a03ae14d7f867c84a25eed380cafb0d6358c3aef66a7252c72c590999e5491d074cc5bd38ce7a704d8686027335295b9e12d9
SSDEEP 768:EufspTfzcR6uWUcb+wmo2q9oozfy3CKPI0Jjb2gX3iqzRtQzyPO/D6wTBDZsx:EufspTf2g20TR0pbpXSqzRtQj1dsx
TLSH
T1E7231B0037E8C12BF2BE5F789DF26145457AF6632A03D6891CC412DB5623FC68A526FE
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

topsexviet.one:80
topsexviet.one:22
topsexviet.one:8080
topsexviet.one:8880
topsexviet.one:2052
topsexviet.one:2082
topsexviet.one:2086
topsexviet.one:2095
topsexviet.one:443
topsexviet.one:2053
topsexviet.one:2083
topsexviet.one:2087
topsexviet.one:2096
topsexviet.one:8443
www.topsexviet.one:80
www.topsexviet.one:22
www.topsexviet.one:8080
www.topsexviet.one:8880
www.topsexviet.one:2052
www.topsexviet.one:2082
www.topsexviet.one:2086
www.topsexviet.one:2095
www.topsexviet.one:443
www.topsexviet.one:2053
www.topsexviet.one:2083
www.topsexviet.one:2087
www.topsexviet.one:2096
www.topsexviet.one:8443
iloveyou.topsexviet.one:80
iloveyou.topsexviet.one:22
iloveyou.topsexviet.one:8080
iloveyou.topsexviet.one:8880
iloveyou.topsexviet.one:2052
iloveyou.topsexviet.one:2082
iloveyou.topsexviet.one:2086
iloveyou.topsexviet.one:2095
iloveyou.topsexviet.one:443
iloveyou.topsexviet.one:2053
iloveyou.topsexviet.one:2083
iloveyou.topsexviet.one:2087
iloveyou.topsexviet.one:2096
iloveyou.topsexviet.one:8443
industroyer.topsexviet.one:80
industroyer.topsexviet.one:22
industroyer.topsexviet.one:8080
industroyer.topsexviet.one:8880
industroyer.topsexviet.one:2052
industroyer.topsexviet.one:2082
industroyer.topsexviet.one:2086
industroyer.topsexviet.one:2095
industroyer.topsexviet.one:443
industroyer.topsexviet.one:2053
industroyer.topsexviet.one:2083
industroyer.topsexviet.one:2087
industroyer.topsexviet.one:2096
industroyer.topsexviet.one:8443
fakeupdates.topsexviet.one:80
fakeupdates.topsexviet.one:22
fakeupdates.topsexviet.one:8080
fakeupdates.topsexviet.one:8880
fakeupdates.topsexviet.one:2052
fakeupdates.topsexviet.one:2082
fakeupdates.topsexviet.one:2086
fakeupdates.topsexviet.one:2095
fakeupdates.topsexviet.one:443
fakeupdates.topsexviet.one:2053
fakeupdates.topsexviet.one:2083
fakeupdates.topsexviet.one:2087
fakeupdates.topsexviet.one:2096
fakeupdates.topsexviet.one:8443

Mutex

r9H7tOe19Q3o

Attributes

delay
0
install
true
install_file
c4lcmib.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/0x001000000001c47e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2624	c4lcmib.exe
4928	c4lcmib.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1160	cmd.exe
5008	cmd.exe

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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c4lcmib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c4lcmib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4532	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
3388	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
Token: SeDebugPrivilege	2624	c4lcmib.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 1160	4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe	89
PID 4664 wrote to memory of 5008	4664	c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe	91
PID 1160 wrote to memory of 3388	1160	cmd.exe	93
PID 5008 wrote to memory of 4532	5008	cmd.exe	94
PID 5008 wrote to memory of 4928	5008	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe
"C:\Users\Admin\AppData\Local\Temp\c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "c4lcmib" /tr '"C:\Users\Admin\AppData\Roaming\c4lcmib.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "c4lcmib" /tr '"C:\Users\Admin\AppData\Roaming\c4lcmib.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3388
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF102.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5008
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4532
- - C:\Users\Admin\AppData\Roaming\c4lcmib.exe
    "C:\Users\Admin\AppData\Roaming\c4lcmib.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4928

C:\Users\Admin\AppData\Roaming\c4lcmib.exe
"C:\Users\Admin\AppData\Roaming\c4lcmib.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2624

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

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

tmpF102.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF102.tmp.bat
Size 151B
SHA256 23923f3e70bcd9447fa77a1ef7ce55ee861a4dba1986478353d429e7e04fa3be
MD5 e43c7529889680efb8a3a13c229fa67e
SHA1 be68ea1dd80f9041565337f8aca74dd65264bf72
SHA512 2d877626c2164d969f879b846253e04c86d6a1cc95eca2fddb0589c823caaa29f9443fff0639d7ce3474e93b2d5d1e7d928c9ae624fc207aa8d685f5a534d673
TLSH
T1BDC02B9256C6FB1E6805681307FBDD8D92BA7D1D3F40BB10C308480E12C0488F4D9381
MD5 SHA1 SHA512 TLSH

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c4lcmib.exe

Path C:\Users\Admin\AppData\Roaming\c4lcmib.exe
Size 45KB
SHA256 c16fc33d0d01091c7eebae9c86e42c6fbd0d2ecf2f28784f2c7add66ab8039f8
MD5 617f4f6e08002836e77cf3d828d8cda7
SHA1 ff2fb96e4e1e2c29ef30dd5e713b7ba6017517c8
SHA512 7c7d65e3630a94e66290a800265a03ae14d7f867c84a25eed380cafb0d6358c3aef66a7252c72c590999e5491d074cc5bd38ce7a704d8686027335295b9e12d9
SSDEEP 768:EufspTfzcR6uWUcb+wmo2q9oozfy3CKPI0Jjb2gX3iqzRtQzyPO/D6wTBDZsx:EufspTf2g20TR0pbpXSqzRtQj1dsx
TLSH
T1E7231B0037E8C12BF2BE5F789DF26145457AF6632A03D6891CC412DB5623FC68A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2624-12-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/2624-14-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/4664-0-0x0000000074D42000-0x0000000074D43000-memory.dmp

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memory/4664-1-0x0000000000130000-0x0000000000142000-memory.dmp

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memory/4664-2-0x0000000074D30000-0x00000000754EC000-memory.dmp

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memory/4664-3-0x0000000004B00000-0x0000000004B9C000-memory.dmp

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memory/4664-8-0x0000000074D30000-0x00000000754EC000-memory.dmp

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