asyncrat | 04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/07/2026, 12:11

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General

Target
04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
Size 45KB
Sample260722-pc5arshl2s
SHA256 04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b
MD5 3625a5ab98f9bc35c80232487a5bedd1
SHA1 1fefa2f96b590f47bdc33a28119dd18cd5b06a0d
SHA512 d163a1515f8113537f558423ba3dfed6cda1bced3bf2aaef13bba15e0b248b187f3d172f68216cc2796571d7522d9095a3bbc296624a7571e298058bed703afa
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1WT9Qpm9PIHzjbZgX3iM9uK1f0gBDZcx:RuxkJTgip2BQH3b2XSQN/dcx
TLSH
T13B231B003BE8823AF27E4FB899F26145867AF6632603D54D6CC451DB5623FC6CA426FD
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

phimsexne.net:80
phimsexne.net:22
phimsexne.net:8080
phimsexne.net:8880
phimsexne.net:2052
phimsexne.net:2082
phimsexne.net:2086
phimsexne.net:2095
phimsexne.net:443
phimsexne.net:2053
phimsexne.net:2083
phimsexne.net:2087
phimsexne.net:2096
phimsexne.net:8443
www.phimsexne.net:80
www.phimsexne.net:22
www.phimsexne.net:8080
www.phimsexne.net:8880
www.phimsexne.net:2052
www.phimsexne.net:2082
www.phimsexne.net:2086
www.phimsexne.net:2095
www.phimsexne.net:443
www.phimsexne.net:2053
www.phimsexne.net:2083
www.phimsexne.net:2087
www.phimsexne.net:2096
www.phimsexne.net:8443
trisis.phimsexne.net:80
trisis.phimsexne.net:22
trisis.phimsexne.net:8080
trisis.phimsexne.net:8880
trisis.phimsexne.net:2052
trisis.phimsexne.net:2082
trisis.phimsexne.net:2086
trisis.phimsexne.net:2095
trisis.phimsexne.net:443
trisis.phimsexne.net:2053
trisis.phimsexne.net:2083
trisis.phimsexne.net:2087
trisis.phimsexne.net:2096
trisis.phimsexne.net:8443
gootloader.phimsexne.net:80
gootloader.phimsexne.net:22
gootloader.phimsexne.net:8080
gootloader.phimsexne.net:8880
gootloader.phimsexne.net:2052
gootloader.phimsexne.net:2082
gootloader.phimsexne.net:2086
gootloader.phimsexne.net:2095
gootloader.phimsexne.net:443
gootloader.phimsexne.net:2053
gootloader.phimsexne.net:2083
gootloader.phimsexne.net:2087
gootloader.phimsexne.net:2096
gootloader.phimsexne.net:8443

Mutex

eyJY5EyepnL3

Attributes

delay
0
install
true
install_file
mk83b5t5.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/0x000e00000001c52e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2648	mk83b5t5.exe
2560	mk83b5t5.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
4432	cmd.exe
5180	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	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	mk83b5t5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mk83b5t5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4796	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
4908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
Token: SeDebugPrivilege	2648	mk83b5t5.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4432	4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe	90
PID 4248 wrote to memory of 5180	4248	04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe	92
PID 4432 wrote to memory of 4908	4432	cmd.exe	94
PID 5180 wrote to memory of 4796	5180	cmd.exe	95
PID 5180 wrote to memory of 2560	5180	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe
"C:\Users\Admin\AppData\Local\Temp\04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mk83b5t5" /tr '"C:\Users\Admin\AppData\Roaming\mk83b5t5.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4432
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mk83b5t5" /tr '"C:\Users\Admin\AppData\Roaming\mk83b5t5.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4908
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD93.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5180
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4796
- - C:\Users\Admin\AppData\Roaming\mk83b5t5.exe
    "C:\Users\Admin\AppData\Roaming\mk83b5t5.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2560

C:\Users\Admin\AppData\Roaming\mk83b5t5.exe
"C:\Users\Admin\AppData\Roaming\mk83b5t5.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2648

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

tmpD93.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpD93.tmp.bat
Size 151B
SHA256 6d0b4bbeb6bd057f7e50512b2e0e8647a00f7cfd28f26590fd3406fb91382d4c
MD5 101ccf4b89dece41830a14a899e5f097
SHA1 9a2dbd6698101f229d4b7b540f4a8861a60bb7e3
SHA512 fa6068c875b8c899e3f48da7c7c6177f5dc6599ed11e7e229d83251f64a3fc415632afd1b1b585e03bc8ac5379a5bfdcae354f9ed6877c0c07b65ec37e0cbb4b
TLSH
T1BAC02B5391C9EE5E2805382316FAD8CCA1B26C1D3F44BF00CB04410D1680458F4D9781
MD5 SHA1 SHA512 TLSH

Submit Download

mk83b5t5.exe

Path C:\Users\Admin\AppData\Roaming\mk83b5t5.exe
Size 45KB
SHA256 04dce57f5206fbba208da0425a82e89d3586d304872c69c51c67377507abb98b
MD5 3625a5ab98f9bc35c80232487a5bedd1
SHA1 1fefa2f96b590f47bdc33a28119dd18cd5b06a0d
SHA512 d163a1515f8113537f558423ba3dfed6cda1bced3bf2aaef13bba15e0b248b187f3d172f68216cc2796571d7522d9095a3bbc296624a7571e298058bed703afa
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1WT9Qpm9PIHzjbZgX3iM9uK1f0gBDZcx:RuxkJTgip2BQH3b2XSQN/dcx
TLSH
T13B231B003BE8823AF27E4FB899F26145867AF6632603D54D6CC451DB5623FC6CA426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2648-12-0x0000000074AC0000-0x000000007527C000-memory.dmp

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memory/2648-14-0x0000000074AC0000-0x000000007527C000-memory.dmp

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memory/4248-0-0x0000000074C72000-0x0000000074C73000-memory.dmp

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memory/4248-1-0x0000000000150000-0x0000000000162000-memory.dmp

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memory/4248-2-0x0000000074C60000-0x000000007541C000-memory.dmp

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memory/4248-3-0x0000000004C50000-0x0000000004CEC000-memory.dmp

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memory/4248-8-0x0000000074C60000-0x000000007541C000-memory.dmp

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