asyncrat | 8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b

Analysis

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

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 05:42

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General

Target
8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
Size 45KB
Sample260804-gea6psdg74
SHA256 8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b
MD5 676a43ccca091cf2d654fcdb738467c4
SHA1 11f1aa18bf20a3733081a92cb0bf2c0456e48030
SHA512 0270d35b8222937445e284f83e9ed404f77c192d9a603f842e1166000b099c0e309953e48ddabe91581c0018c121f84a1d91b22c84502377cf573db16c7987e0
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9voopCBK9INJPIZzjbwgX3isSNhuysaHBDZ8x:0uPrpT/qY2ao6bIwZ3b3XSr6ysahd8x
TLSH
T14B232B003BE9C12BF2BE4F7898F26105867AF6637503D54E1CC4529B5613FC69A42AEE
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

phimsexvnn.com:80
phimsexvnn.com:22
phimsexvnn.com:8080
phimsexvnn.com:8880
phimsexvnn.com:2052
phimsexvnn.com:2082
phimsexvnn.com:2086
phimsexvnn.com:2095
phimsexvnn.com:443
phimsexvnn.com:2053
phimsexvnn.com:2083
phimsexvnn.com:2087
phimsexvnn.com:2096
phimsexvnn.com:8443
www.phimsexvnn.com:80
www.phimsexvnn.com:22
www.phimsexvnn.com:8080
www.phimsexvnn.com:8880
www.phimsexvnn.com:2052
www.phimsexvnn.com:2082
www.phimsexvnn.com:2086
www.phimsexvnn.com:2095
www.phimsexvnn.com:443
www.phimsexvnn.com:2053
www.phimsexvnn.com:2083
www.phimsexvnn.com:2087
www.phimsexvnn.com:2096
www.phimsexvnn.com:8443
malware.phimsexvnn.com:80
malware.phimsexvnn.com:22
malware.phimsexvnn.com:8080
malware.phimsexvnn.com:8880
malware.phimsexvnn.com:2052
malware.phimsexvnn.com:2082
malware.phimsexvnn.com:2086
malware.phimsexvnn.com:2095
malware.phimsexvnn.com:443
malware.phimsexvnn.com:2053
malware.phimsexvnn.com:2083
malware.phimsexvnn.com:2087
malware.phimsexvnn.com:2096
malware.phimsexvnn.com:8443
cryptolocker.phimsexvnn.com:80
cryptolocker.phimsexvnn.com:22
cryptolocker.phimsexvnn.com:8080
cryptolocker.phimsexvnn.com:8880
cryptolocker.phimsexvnn.com:2052
cryptolocker.phimsexvnn.com:2082
cryptolocker.phimsexvnn.com:2086
cryptolocker.phimsexvnn.com:2095
cryptolocker.phimsexvnn.com:443
cryptolocker.phimsexvnn.com:2053
cryptolocker.phimsexvnn.com:2083
cryptolocker.phimsexvnn.com:2087
cryptolocker.phimsexvnn.com:2096
cryptolocker.phimsexvnn.com:8443

Mutex

AdDA9Ntyngcp

Attributes

delay
0
install
true
install_file
ofautkv.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/0x000c00000001c660-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
6524	ofautkv.exe
6420	ofautkv.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
5460	cmd.exe
2520	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	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.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	ofautkv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ofautkv.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3400	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
4900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
Token: SeDebugPrivilege	6524	ofautkv.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2520	1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe	90
PID 1984 wrote to memory of 5460	1984	8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe	92
PID 2520 wrote to memory of 4900	2520	cmd.exe	94
PID 5460 wrote to memory of 3400	5460	cmd.exe	95
PID 5460 wrote to memory of 6420	5460	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe
"C:\Users\Admin\AppData\Local\Temp\8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ofautkv" /tr '"C:\Users\Admin\AppData\Roaming\ofautkv.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ofautkv" /tr '"C:\Users\Admin\AppData\Roaming\ofautkv.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4900
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA6C5.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5460
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3400
- - C:\Users\Admin\AppData\Roaming\ofautkv.exe
    "C:\Users\Admin\AppData\Roaming\ofautkv.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6420

C:\Users\Admin\AppData\Roaming\ofautkv.exe
"C:\Users\Admin\AppData\Roaming\ofautkv.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:6524

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

tmpA6C5.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA6C5.tmp.bat
Size 151B
SHA256 64170e7e79fb0d8d7e0d7568c55edf9fd8a8aa1ad3e686850d17567002add6fd
MD5 54f8a3d4a113c625c735ed46526f2a20
SHA1 91947e76c2a1b705b17aa1c8d6bb29183cc6ddb1
SHA512 46c3521aaae8cb9ffca189e1e51c99321375e06f4180b9eefc1c9fe8d1045ab5d703ca8f9b4ae8e99b30e21531e8594d729e63d2be7ee3d3b55bb762988dffc4
TLSH
T1B7C08C4266C6EA0E6805542306FAE48D91A268693E40EB10C70880991280498E099241
MD5 SHA1 SHA512 TLSH

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ofautkv.exe

Path C:\Users\Admin\AppData\Roaming\ofautkv.exe
Size 45KB
SHA256 8efc4cbfe435e2f99dff3fd913859e3fcf4d50ae8daa63e8eedb9de0fac4693b
MD5 676a43ccca091cf2d654fcdb738467c4
SHA1 11f1aa18bf20a3733081a92cb0bf2c0456e48030
SHA512 0270d35b8222937445e284f83e9ed404f77c192d9a603f842e1166000b099c0e309953e48ddabe91581c0018c121f84a1d91b22c84502377cf573db16c7987e0
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9voopCBK9INJPIZzjbwgX3isSNhuysaHBDZ8x:0uPrpT/qY2ao6bIwZ3b3XSr6ysahd8x
TLSH
T14B232B003BE9C12BF2BE4F7898F26105867AF6637503D54E1CC4529B5613FC69A42AEE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1984-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

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memory/1984-1-0x00000000002A0000-0x00000000002B2000-memory.dmp

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memory/1984-2-0x0000000074EE0000-0x000000007569C000-memory.dmp

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memory/1984-3-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

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memory/1984-8-0x0000000074EE0000-0x000000007569C000-memory.dmp

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memory/6524-12-0x0000000074CE0000-0x000000007549C000-memory.dmp

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memory/6524-14-0x0000000074CE0000-0x000000007549C000-memory.dmp

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