asyncrat | b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547

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
08/09/2026, 00:52

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General

Target
b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
Size 45KB
Sample260908-a8ebwscc52
SHA256 b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547
MD5 83b80ef793762efcbad29deed39fe37d
SHA1 c1d42c888417af77359ae90ec8c045df23b50716
SHA512 f14817893e70f3a55ede000fd05d3365d1901ddd20266afb7b81c9551ab6d749e20ff49354b2354695f537e0fce27c46944b8b897678a6920df1111d3263a85e
SSDEEP 768:4uLZZTUAoOSWUYZL8mo2qFrfBohEa+PIvkjbtgX3ib/w9+d0UjKjJlB8x5BDZbx:4uLZZTUTn2a4EaHvkb6XSb49+WUO1lBW
TLSH
T10B231B003BE8822BF2BE5F7899F261454A7EF2632603D54D2CC452DB5713FC69A426F9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

heovl.im:80
heovl.im:22
heovl.im:8080
heovl.im:8880
heovl.im:2052
heovl.im:2082
heovl.im:2086
heovl.im:2095
heovl.im:443
heovl.im:2053
heovl.im:2083
heovl.im:2087
heovl.im:2096
heovl.im:8443
www.heovl.im:80
www.heovl.im:22
www.heovl.im:8080
www.heovl.im:8880
www.heovl.im:2052
www.heovl.im:2082
www.heovl.im:2086
www.heovl.im:2095
www.heovl.im:443
www.heovl.im:2053
www.heovl.im:2083
www.heovl.im:2087
www.heovl.im:2096
www.heovl.im:8443
ursnif.heovl.im:80
ursnif.heovl.im:22
ursnif.heovl.im:8080
ursnif.heovl.im:8880
ursnif.heovl.im:2052
ursnif.heovl.im:2082
ursnif.heovl.im:2086
ursnif.heovl.im:2095
ursnif.heovl.im:443
ursnif.heovl.im:2053
ursnif.heovl.im:2083
ursnif.heovl.im:2087
ursnif.heovl.im:2096
ursnif.heovl.im:8443
zbot.heovl.im:80
zbot.heovl.im:22
zbot.heovl.im:8080
zbot.heovl.im:8880
zbot.heovl.im:2052
zbot.heovl.im:2082
zbot.heovl.im:2086
zbot.heovl.im:2095
zbot.heovl.im:443
zbot.heovl.im:2053
zbot.heovl.im:2083
zbot.heovl.im:2087
zbot.heovl.im:2096
zbot.heovl.im:8443

Mutex

FFO2qBTGdrO6

Attributes

delay
0
install
true
install_file
wqy48.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/0x002400000001c2fc-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1972	wqy48.exe
4640	wqy48.exe

Outbound SSH connection to public host 2 TTPs 6 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc
SSH destination	10	104.26.6.168:22
SSH destination	4	172.67.71.133:22
SSH destination	5	104.26.7.168:22
SSH destination	7	104.26.6.168:22
SSH destination	8	172.67.71.133:22
SSH destination	9	104.26.7.168:22

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
5116	cmd.exe
1280	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	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.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	wqy48.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wqy48.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1804	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
2280	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
Token: SeDebugPrivilege	1972	wqy48.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 5116	2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe	89
PID 2884 wrote to memory of 1280	2884	b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe	91
PID 5116 wrote to memory of 2280	5116	cmd.exe	93
PID 1280 wrote to memory of 1804	1280	cmd.exe	94
PID 1280 wrote to memory of 4640	1280	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe
"C:\Users\Admin\AppData\Local\Temp\b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "wqy48" /tr '"C:\Users\Admin\AppData\Roaming\wqy48.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5116
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "wqy48" /tr '"C:\Users\Admin\AppData\Roaming\wqy48.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2280
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFE4.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1804
- - C:\Users\Admin\AppData\Roaming\wqy48.exe
    "C:\Users\Admin\AppData\Roaming\wqy48.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4640

C:\Users\Admin\AppData\Roaming\wqy48.exe
"C:\Users\Admin\AppData\Roaming\wqy48.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1972

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

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

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Downloads

tmpFE4.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpFE4.tmp.bat
Size 148B
SHA256 3a7c0b6b38453da0dd168c88a6ddc72e40e98598c7d4f96942be7ac95702fac9
MD5 3b8338df2333bc30e28360c914437365
SHA1 fd531ca10af68448bb7ccf6bd6e1babc0176c222
SHA512 01443b29737e41243570033b4d9c92753874a57bf3d6f0186ac79938dbb7e25f206fbd3d89b4639ce69b6c93526cbb221c1d8fb0be60769a4f14026c7f080358
TLSH
T16DC08C47A1C5AA4E6805245302BA958C91626D5D3E40BB00C7444C0E1280448F4DD381
MD5 SHA1 SHA512 TLSH

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wqy48.exe

Path C:\Users\Admin\AppData\Roaming\wqy48.exe
Size 45KB
SHA256 b4d136d1142ec6a4e7af54aa5d2d35706e8c6e6248abe0e21d03c5beb9002547
MD5 83b80ef793762efcbad29deed39fe37d
SHA1 c1d42c888417af77359ae90ec8c045df23b50716
SHA512 f14817893e70f3a55ede000fd05d3365d1901ddd20266afb7b81c9551ab6d749e20ff49354b2354695f537e0fce27c46944b8b897678a6920df1111d3263a85e
SSDEEP 768:4uLZZTUAoOSWUYZL8mo2qFrfBohEa+PIvkjbtgX3ib/w9+d0UjKjJlB8x5BDZbx:4uLZZTUTn2a4EaHvkb6XSb49+WUO1lBW
TLSH
T10B231B003BE8822BF2BE5F7899F261454A7EF2632603D54D2CC452DB5713FC69A426F9
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1972-12-0x00000000742B0000-0x0000000074A6C000-memory.dmp

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memory/1972-14-0x00000000742B0000-0x0000000074A6C000-memory.dmp

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memory/2884-0-0x00000000744B2000-0x00000000744B3000-memory.dmp

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memory/2884-1-0x0000000000E60000-0x0000000000E72000-memory.dmp

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memory/2884-2-0x00000000744A0000-0x0000000074C5C000-memory.dmp

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memory/2884-3-0x00000000058A0000-0x000000000593C000-memory.dmp

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memory/2884-8-0x00000000744A0000-0x0000000074C5C000-memory.dmp

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