asyncrat | a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/07/2026, 11:40

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General

Target
a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
Size 45KB
Sample260722-nsvktsec75
SHA256 a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257
MD5 b15b44a6c5b07c088c3146fc9a039fff
SHA1 66f8925662869e138e3c9c32a8044ba9758736cc
SHA512 2d5d52597525775858dfd4213e3f77eedb2c13fa7729318d9af2719b44222d9336048df3362cdb73eb0305f4ba5986057e86cde3e419df5e0867fac42e48753b
SSDEEP 768:5udApTNctooWUS7C+mo2qtkZo3TMtPImbjbmgX3iht8HBDZ0x:5udApTNmU2lU3mPb5XSed0x
TLSH
T169232B0037E9812BF2BE4F7868F26245467AF6673603D54A2CC4519B5723FC68A427FE
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

flimora.top:80
flimora.top:22
flimora.top:8080
flimora.top:8880
flimora.top:2052
flimora.top:2082
flimora.top:2086
flimora.top:2095
flimora.top:443
flimora.top:2053
flimora.top:2083
flimora.top:2087
flimora.top:2096
flimora.top:8443
www.flimora.top:80
www.flimora.top:22
www.flimora.top:8080
www.flimora.top:8880
www.flimora.top:2052
www.flimora.top:2082
www.flimora.top:2086
www.flimora.top:2095
www.flimora.top:443
www.flimora.top:2053
www.flimora.top:2083
www.flimora.top:2087
www.flimora.top:2096
www.flimora.top:8443
malware.flimora.top:80
malware.flimora.top:22
malware.flimora.top:8080
malware.flimora.top:8880
malware.flimora.top:2052
malware.flimora.top:2082
malware.flimora.top:2086
malware.flimora.top:2095
malware.flimora.top:443
malware.flimora.top:2053
malware.flimora.top:2083
malware.flimora.top:2087
malware.flimora.top:2096
malware.flimora.top:8443
invasive.flimora.top:80
invasive.flimora.top:22
invasive.flimora.top:8080
invasive.flimora.top:8880
invasive.flimora.top:2052
invasive.flimora.top:2082
invasive.flimora.top:2086
invasive.flimora.top:2095
invasive.flimora.top:443
invasive.flimora.top:2053
invasive.flimora.top:2083
invasive.flimora.top:2087
invasive.flimora.top:2096
invasive.flimora.top:8443

Mutex

idFaW9ZblZn6

Attributes

delay
0
install
true
install_file
34jjsb.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/0x0005000000016b49-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3088	34jjsb.exe
2640	34jjsb.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
3428	cmd.exe
4384	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	34jjsb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	34jjsb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.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
5236	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
5508	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
Token: SeDebugPrivilege	3088	34jjsb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 4384	2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe	89
PID 2000 wrote to memory of 3428	2000	a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe	91
PID 4384 wrote to memory of 5508	4384	cmd.exe	93
PID 3428 wrote to memory of 5236	3428	cmd.exe	94
PID 3428 wrote to memory of 2640	3428	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe
"C:\Users\Admin\AppData\Local\Temp\a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "34jjsb" /tr '"C:\Users\Admin\AppData\Roaming\34jjsb.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4384
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "34jjsb" /tr '"C:\Users\Admin\AppData\Roaming\34jjsb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5508
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1BBC.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3428
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5236
- - C:\Users\Admin\AppData\Roaming\34jjsb.exe
    "C:\Users\Admin\AppData\Roaming\34jjsb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2640

C:\Users\Admin\AppData\Roaming\34jjsb.exe
"C:\Users\Admin\AppData\Roaming\34jjsb.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3088

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

tmp1BBC.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1BBC.tmp.bat
Size 150B
SHA256 1f80ffe6b998bd6590ead8c6b5ba97bfb36e2793a0aee25da85e3dd0ab1bdda2
MD5 3d95669b4aece7ea12742f3b1827a38c
SHA1 bbf80b24154b4f1fd7ee91965ac30efd7b57b7bb
SHA512 3b63f6f96400df13736294e0d1fd786a337c9c8737d7e3c4545701bd44ffa6868c4c77caf8268e78b242a33ddf184574ae4a260ee6801087ca29d526b472c9e2
TLSH
T1E9C02B5291D5EA8F2C8DA45302FAD48D91B2EC1D3F40BF10D304880D1280888F0DD346
MD5 SHA1 SHA512 TLSH

Submit Download

34jjsb.exe

Path C:\Users\Admin\AppData\Roaming\34jjsb.exe
Size 45KB
SHA256 a6dfefc18e1a3a0316f51b3aede1d4ed8b04050ecd3af8fd6db31af4bd092257
MD5 b15b44a6c5b07c088c3146fc9a039fff
SHA1 66f8925662869e138e3c9c32a8044ba9758736cc
SHA512 2d5d52597525775858dfd4213e3f77eedb2c13fa7729318d9af2719b44222d9336048df3362cdb73eb0305f4ba5986057e86cde3e419df5e0867fac42e48753b
SSDEEP 768:5udApTNctooWUS7C+mo2qtkZo3TMtPImbjbmgX3iht8HBDZ0x:5udApTNmU2lU3mPb5XSed0x
TLSH
T169232B0037E9812BF2BE4F7868F26245467AF6673603D54A2CC4519B5723FC68A427FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2000-0-0x0000000074DB2000-0x0000000074DB3000-memory.dmp

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memory/2000-1-0x0000000000690000-0x00000000006A2000-memory.dmp

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memory/2000-2-0x0000000074DA0000-0x000000007555C000-memory.dmp

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memory/2000-3-0x00000000052D0000-0x000000000536C000-memory.dmp

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memory/2000-9-0x0000000074DA0000-0x000000007555C000-memory.dmp

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memory/3088-12-0x0000000074DA0000-0x000000007555C000-memory.dmp

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memory/3088-14-0x0000000074DA0000-0x000000007555C000-memory.dmp

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