asyncrat | 103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4

Analysis

max time kernel
148s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
17/08/2026, 16:59

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General

Target
103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
Size 45KB
Sample260817-vhsf2svema
SHA256 103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4
MD5 2d1f81c46fad72f5f3414443bc38a21e
SHA1 6c20c487511a2b285d6863c9120d2f925b67adfc
SHA512 a012fc5480e49a44d15477760db059b686fba7c399e3c21b1aca07296dd23035fa275eb77ec314bba4234dd125260959d3b67b86ae8a104a1062e8859841e0ab
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlLlsHoPEaMPI1sjbLgX3ipgeT1FWByonBDZMx:wuDWZTpMZSB2OuuEax1cb0XSpgI1FWkj
TLSH
T1EB232B003BE8C12BF2BE5F7898F26145867AF1A37603D64A1CC451DB5A13FC696426FE
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

ads.zorvec.name:80
ads.zorvec.name:22
ads.zorvec.name:8080
ads.zorvec.name:8880
ads.zorvec.name:2052
ads.zorvec.name:2082
ads.zorvec.name:2086
ads.zorvec.name:2095
ads.zorvec.name:443
ads.zorvec.name:2053
ads.zorvec.name:2083
ads.zorvec.name:2087
ads.zorvec.name:2096
ads.zorvec.name:8443
www.ads.zorvec.name:80
www.ads.zorvec.name:22
www.ads.zorvec.name:8080
www.ads.zorvec.name:8880
www.ads.zorvec.name:2052
www.ads.zorvec.name:2082
www.ads.zorvec.name:2086
www.ads.zorvec.name:2095
www.ads.zorvec.name:443
www.ads.zorvec.name:2053
www.ads.zorvec.name:2083
www.ads.zorvec.name:2087
www.ads.zorvec.name:2096
www.ads.zorvec.name:8443
locky.ads.zorvec.name:80
locky.ads.zorvec.name:22
locky.ads.zorvec.name:8080
locky.ads.zorvec.name:8880
locky.ads.zorvec.name:2052
locky.ads.zorvec.name:2082
locky.ads.zorvec.name:2086
locky.ads.zorvec.name:2095
locky.ads.zorvec.name:443
locky.ads.zorvec.name:2053
locky.ads.zorvec.name:2083
locky.ads.zorvec.name:2087
locky.ads.zorvec.name:2096
locky.ads.zorvec.name:8443
nimda.ads.zorvec.name:80
nimda.ads.zorvec.name:22
nimda.ads.zorvec.name:8080
nimda.ads.zorvec.name:8880
nimda.ads.zorvec.name:2052
nimda.ads.zorvec.name:2082
nimda.ads.zorvec.name:2086
nimda.ads.zorvec.name:2095
nimda.ads.zorvec.name:443
nimda.ads.zorvec.name:2053
nimda.ads.zorvec.name:2083
nimda.ads.zorvec.name:2087
nimda.ads.zorvec.name:2096
nimda.ads.zorvec.name:8443

Mutex

p3XDN2v8vCYj

Attributes

delay
0
install
true
install_file
ejlfb.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/0x000b00000001b87f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4932	ejlfb.exe
3760	ejlfb.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
4072	cmd.exe
4872	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ejlfb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ejlfb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2672	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
5480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
Token: SeDebugPrivilege	4932	ejlfb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 4872	4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe	89
PID 4956 wrote to memory of 4072	4956	103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe	91
PID 4872 wrote to memory of 5480	4872	cmd.exe	93
PID 4072 wrote to memory of 2672	4072	cmd.exe	94
PID 4072 wrote to memory of 3760	4072	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe
"C:\Users\Admin\AppData\Local\Temp\103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ejlfb" /tr '"C:\Users\Admin\AppData\Roaming\ejlfb.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ejlfb" /tr '"C:\Users\Admin\AppData\Roaming\ejlfb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5480
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp48C7.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4072
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2672
- - C:\Users\Admin\AppData\Roaming\ejlfb.exe
    "C:\Users\Admin\AppData\Roaming\ejlfb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3760

C:\Users\Admin\AppData\Roaming\ejlfb.exe
"C:\Users\Admin\AppData\Roaming\ejlfb.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4932

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

tmp48C7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp48C7.tmp.bat
Size 149B
SHA256 94ed70e80efb6c74a84124f4200476b9e4c983915d9c5197d7d071428b6f66b9
MD5 85d71a8a3969bf8a91ce9672a4f64d6f
SHA1 790c0eed8ffd1d8b5b311452cdc3322f19cb1143
SHA512 99061c102bba039516a7069639aff6386ce1102cca43c62d6321c292dc87c632a72811a2094cccf9e05641bafcb1a12ca3264909c671f0173bc190d1585b97e1
TLSH
T10FC02B8252C5EB4F2809746312FAD48C92B26D1A3F80BB10C344488D228044AF0D93C1
MD5 SHA1 SHA512 TLSH

Submit Download

ejlfb.exe

Path C:\Users\Admin\AppData\Roaming\ejlfb.exe
Size 45KB
SHA256 103021b7749094362982fafb0f288d2f472a4d6915067f1092ec458d07f74ac4
MD5 2d1f81c46fad72f5f3414443bc38a21e
SHA1 6c20c487511a2b285d6863c9120d2f925b67adfc
SHA512 a012fc5480e49a44d15477760db059b686fba7c399e3c21b1aca07296dd23035fa275eb77ec314bba4234dd125260959d3b67b86ae8a104a1062e8859841e0ab
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlLlsHoPEaMPI1sjbLgX3ipgeT1FWByonBDZMx:wuDWZTpMZSB2OuuEax1cb0XSpgI1FWkj
TLSH
T1EB232B003BE8C12BF2BE5F7898F26145867AF1A37603D64A1CC451DB5A13FC696426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4932-12-0x0000000074870000-0x000000007502C000-memory.dmp

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memory/4932-14-0x0000000074870000-0x000000007502C000-memory.dmp

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memory/4956-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

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memory/4956-1-0x00000000004D0000-0x00000000004E2000-memory.dmp

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memory/4956-2-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/4956-3-0x0000000004ED0000-0x0000000004F6C000-memory.dmp

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memory/4956-8-0x00000000749E0000-0x000000007519C000-memory.dmp

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