asyncrat | 026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260630-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/07/2026, 13:55

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General

Target
026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
Size 45KB
Sample260703-q73wvsft9n
SHA256 026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4
MD5 cae54e635459de5c9aadd729937d370c
SHA1 c74265239034c4cd6f38d0119df25aba866f19f0
SHA512 1ad2f747ff3fe2807c1efa077841ff0212277f5b20d634893154c76b96b9fb6d7bb55ff50c9bdbbca457cb7dc911fa61771dfbd3bd9d63ae891007a70dbddac6
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVufPLzizpvtLjZPI9zjbtgXmigwcyiVa8/BDZEx:MuBGJTPho2HfHi1VjW93b6XPgwicWdEx
TLSH
T131233B003BE8C12BF2BE4B78A9F26145867AF6677603D54D1CC441DB5A13FC68A426FE
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

phimsexvn.work:80
phimsexvn.work:22
phimsexvn.work:8080
phimsexvn.work:8880
phimsexvn.work:2052
phimsexvn.work:2082
phimsexvn.work:2086
phimsexvn.work:2095
phimsexvn.work:443
phimsexvn.work:2053
phimsexvn.work:2083
phimsexvn.work:2087
phimsexvn.work:2096
phimsexvn.work:8443
www.phimsexvn.work:80
www.phimsexvn.work:22
www.phimsexvn.work:8080
www.phimsexvn.work:8880
www.phimsexvn.work:2052
www.phimsexvn.work:2082
www.phimsexvn.work:2086
www.phimsexvn.work:2095
www.phimsexvn.work:443
www.phimsexvn.work:2053
www.phimsexvn.work:2083
www.phimsexvn.work:2087
www.phimsexvn.work:2096
www.phimsexvn.work:8443
trickbot.phimsexvn.work:80
trickbot.phimsexvn.work:22
trickbot.phimsexvn.work:8080
trickbot.phimsexvn.work:8880
trickbot.phimsexvn.work:2052
trickbot.phimsexvn.work:2082
trickbot.phimsexvn.work:2086
trickbot.phimsexvn.work:2095
trickbot.phimsexvn.work:443
trickbot.phimsexvn.work:2053
trickbot.phimsexvn.work:2083
trickbot.phimsexvn.work:2087
trickbot.phimsexvn.work:2096
trickbot.phimsexvn.work:8443
agenttesla.phimsexvn.work:80
agenttesla.phimsexvn.work:22
agenttesla.phimsexvn.work:8080
agenttesla.phimsexvn.work:8880
agenttesla.phimsexvn.work:2052
agenttesla.phimsexvn.work:2082
agenttesla.phimsexvn.work:2086
agenttesla.phimsexvn.work:2095
agenttesla.phimsexvn.work:443
agenttesla.phimsexvn.work:2053
agenttesla.phimsexvn.work:2083
agenttesla.phimsexvn.work:2087
agenttesla.phimsexvn.work:2096
agenttesla.phimsexvn.work:8443
blaster.phimsexvn.work:80
blaster.phimsexvn.work:22
blaster.phimsexvn.work:8080
blaster.phimsexvn.work:8880
blaster.phimsexvn.work:2052
blaster.phimsexvn.work:2082
blaster.phimsexvn.work:2086
blaster.phimsexvn.work:2095
blaster.phimsexvn.work:443
blaster.phimsexvn.work:2053
blaster.phimsexvn.work:2083
blaster.phimsexvn.work:2087
blaster.phimsexvn.work:2096
blaster.phimsexvn.work:8443

Mutex

e3FzL7NW3omD

Attributes

delay
0
install
true
install_file
tuuo.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/0x001000000001c584-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3296	tuuo.exe
5512	tuuo.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	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.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	tuuo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tuuo.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5940	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
2060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
Token: SeDebugPrivilege	3296	tuuo.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4852 wrote to memory of 2412	4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe	88
PID 4852 wrote to memory of 3668	4852	026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe	89
PID 2412 wrote to memory of 2060	2412	cmd.exe	92
PID 3668 wrote to memory of 5940	3668	cmd.exe	93
PID 3668 wrote to memory of 5512	3668	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe
"C:\Users\Admin\AppData\Local\Temp\026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tuuo" /tr '"C:\Users\Admin\AppData\Roaming\tuuo.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "tuuo" /tr '"C:\Users\Admin\AppData\Roaming\tuuo.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2060
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF383.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5940
- - C:\Users\Admin\AppData\Roaming\tuuo.exe
    "C:\Users\Admin\AppData\Roaming\tuuo.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5512

C:\Users\Admin\AppData\Roaming\tuuo.exe
"C:\Users\Admin\AppData\Roaming\tuuo.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3296

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

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Downloads

tmpF383.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF383.tmp.bat
Size 148B
SHA256 c12b4a75c23bdad727d1205106ecfe1d7bcc03e91c455df2065e28f493ccf132
MD5 ac3c8f68767c4bbc33981fb778842ae0
SHA1 4416cfb88fcc890cb24802558520b6805da98453
SHA512 b22e9f1183ea97bba44defad0b3e6b0086092d0d0ece466d28eaf6b483a7cc78947a98e7f083785ccc7df2182bf78a1014bcca4e4c5d84a0d49b11044edb6066
TLSH
T1D0C02B4251C6FA4F6805249703FAD48D91737C293F44BB00D3844C0F62804B8F4ED341
MD5 SHA1 SHA512 TLSH

Submit Download

tuuo.exe

Path C:\Users\Admin\AppData\Roaming\tuuo.exe
Size 45KB
SHA256 026fdd4998f0b36057fc0d038f4ba8acaaf7ad7e973f00fc119f5427a57175d4
MD5 cae54e635459de5c9aadd729937d370c
SHA1 c74265239034c4cd6f38d0119df25aba866f19f0
SHA512 1ad2f747ff3fe2807c1efa077841ff0212277f5b20d634893154c76b96b9fb6d7bb55ff50c9bdbbca457cb7dc911fa61771dfbd3bd9d63ae891007a70dbddac6
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVufPLzizpvtLjZPI9zjbtgXmigwcyiVa8/BDZEx:MuBGJTPho2HfHi1VjW93b6XPgwicWdEx
TLSH
T131233B003BE8C12BF2BE4B78A9F26145867AF6677603D54D1CC441DB5A13FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3296-12-0x0000000074560000-0x0000000074D1C000-memory.dmp

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memory/3296-14-0x0000000074560000-0x0000000074D1C000-memory.dmp

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memory/4852-0-0x00000000746E2000-0x00000000746E3000-memory.dmp

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memory/4852-1-0x0000000000F20000-0x0000000000F32000-memory.dmp

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memory/4852-2-0x00000000746D0000-0x0000000074E8C000-memory.dmp

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memory/4852-3-0x0000000005B20000-0x0000000005BBC000-memory.dmp

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memory/4852-8-0x00000000746D0000-0x0000000074E8C000-memory.dmp

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