asyncrat | 98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/06/2026, 19:09

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General

Target
98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
Size 45KB
Sample260622-xtzevafx5j
SHA256 98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795
MD5 dda970b8a10b5baa90e575fe0ca732f5
SHA1 55d6f831d8024455a24db7b04d541a6632cec5f4
SHA512 81c26bf039f5a323426a935ded6cee39ded51aef984cfba413709f299cdf92869d933a7bf49cd0b9a48dbbfb1973800b5c6e044e82e26b2fd5328abe81926c2e
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVe0ewtDc30oiZPI/zjb8gX3ia6yEEMBDZEx:MuBGJTPho2twR2iW/3bTXSsKdEx
TLSH
T1C0232A003BE9813BF2BE4F7899F26145867AF6636603D5491CC451DB4A23FC68A436FE
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

a1aflooring.com:80
a1aflooring.com:22
a1aflooring.com:8080
a1aflooring.com:8880
a1aflooring.com:2052
a1aflooring.com:2082
a1aflooring.com:2086
a1aflooring.com:2095
a1aflooring.com:443
a1aflooring.com:2053
a1aflooring.com:2083
a1aflooring.com:2087
a1aflooring.com:2096
a1aflooring.com:8443
www.a1aflooring.com:80
www.a1aflooring.com:22
www.a1aflooring.com:8080
www.a1aflooring.com:8880
www.a1aflooring.com:2052
www.a1aflooring.com:2082
www.a1aflooring.com:2086
www.a1aflooring.com:2095
www.a1aflooring.com:443
www.a1aflooring.com:2053
www.a1aflooring.com:2083
www.a1aflooring.com:2087
www.a1aflooring.com:2096
www.a1aflooring.com:8443
trisis.a1aflooring.com:80
trisis.a1aflooring.com:22
trisis.a1aflooring.com:8080
trisis.a1aflooring.com:8880
trisis.a1aflooring.com:2052
trisis.a1aflooring.com:2082
trisis.a1aflooring.com:2086
trisis.a1aflooring.com:2095
trisis.a1aflooring.com:443
trisis.a1aflooring.com:2053
trisis.a1aflooring.com:2083
trisis.a1aflooring.com:2087
trisis.a1aflooring.com:2096
trisis.a1aflooring.com:8443
hacker.a1aflooring.com:80
hacker.a1aflooring.com:22
hacker.a1aflooring.com:8080
hacker.a1aflooring.com:8880
hacker.a1aflooring.com:2052
hacker.a1aflooring.com:2082
hacker.a1aflooring.com:2086
hacker.a1aflooring.com:2095
hacker.a1aflooring.com:443
hacker.a1aflooring.com:2053
hacker.a1aflooring.com:2083
hacker.a1aflooring.com:2087
hacker.a1aflooring.com:2096
hacker.a1aflooring.com:8443
rat.a1aflooring.com:80
rat.a1aflooring.com:22
rat.a1aflooring.com:8080
rat.a1aflooring.com:8880
rat.a1aflooring.com:2052
rat.a1aflooring.com:2082
rat.a1aflooring.com:2086
rat.a1aflooring.com:2095
rat.a1aflooring.com:443
rat.a1aflooring.com:2053
rat.a1aflooring.com:2083
rat.a1aflooring.com:2087
rat.a1aflooring.com:2096
rat.a1aflooring.com:8443

Mutex

6C3aPwtXHtwZ

Attributes

delay
0
install
true
install_file
wtkf.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/0x000d00000001c5eb-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2660	wtkf.exe
1776	wtkf.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	wtkf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wtkf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2464	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
3768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
Token: SeDebugPrivilege	2660	wtkf.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 1104	1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe	88
PID 1140 wrote to memory of 5076	1140	98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe	89
PID 1104 wrote to memory of 3768	1104	cmd.exe	92
PID 5076 wrote to memory of 2464	5076	cmd.exe	93
PID 5076 wrote to memory of 1776	5076	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe
"C:\Users\Admin\AppData\Local\Temp\98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "wtkf" /tr '"C:\Users\Admin\AppData\Roaming\wtkf.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1104
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "wtkf" /tr '"C:\Users\Admin\AppData\Roaming\wtkf.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3768
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDC90.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5076
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2464
- - C:\Users\Admin\AppData\Roaming\wtkf.exe
    "C:\Users\Admin\AppData\Roaming\wtkf.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1776

C:\Users\Admin\AppData\Roaming\wtkf.exe
"C:\Users\Admin\AppData\Roaming\wtkf.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2660

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

Replay Monitor

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Downloads

tmpDC90.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpDC90.tmp.bat
Size 148B
SHA256 5f21842ffbe06b002fcb3fd6944cdb4a694461f473a64794bc095f9e3a5853c8
MD5 00bd1556cc2825da391f77b59615a919
SHA1 156535ea9aa3feaad6e97335eb324f50667989ac
SHA512 e9e27452499ec0ff262008ef8c083d6424fb50e6b14337b21fd29dbdfdaf5ba7bd915500a798ccc9785612dbbe484daa52129b8df64430c413fefb74a790d87e
TLSH
T1FBC02B5255C5EA1E6D05141313FAD5CDF1726C6E3F40BF00C708402E2280458F0DE382
MD5 SHA1 SHA512 TLSH

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wtkf.exe

Path C:\Users\Admin\AppData\Roaming\wtkf.exe
Size 45KB
SHA256 98b88da106319ac03c93c0b190dee81b3d3af9d643e2eb883b5d5f38f39f8795
MD5 dda970b8a10b5baa90e575fe0ca732f5
SHA1 55d6f831d8024455a24db7b04d541a6632cec5f4
SHA512 81c26bf039f5a323426a935ded6cee39ded51aef984cfba413709f299cdf92869d933a7bf49cd0b9a48dbbfb1973800b5c6e044e82e26b2fd5328abe81926c2e
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVe0ewtDc30oiZPI/zjb8gX3ia6yEEMBDZEx:MuBGJTPho2twR2iW/3bTXSsKdEx
TLSH
T1C0232A003BE9813BF2BE4F7899F26145867AF6636603D5491CC451DB4A23FC68A436FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1140-0-0x00000000742D2000-0x00000000742D3000-memory.dmp

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memory/1140-1-0x00000000004D0000-0x00000000004E2000-memory.dmp

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memory/1140-2-0x00000000742C0000-0x0000000074A7C000-memory.dmp

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memory/1140-3-0x0000000005030000-0x00000000050CC000-memory.dmp

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memory/1140-8-0x00000000742C0000-0x0000000074A7C000-memory.dmp

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memory/2660-12-0x0000000074150000-0x000000007490C000-memory.dmp

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memory/2660-14-0x0000000074150000-0x000000007490C000-memory.dmp

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