asyncrat | 3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3

Analysis

max time kernel
6s
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
18/07/2026, 16:49

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General

Target
3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
Size 45KB
Sample260718-vbpftaf15r
SHA256 3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3
MD5 45c704d3a524838b6c03f13ec55bda63
SHA1 0f668a329f212059f6dfe7e03bc9493134e3f500
SHA512 6616cf1025103759207b53cb6caad26c27c68cefcb16af8a0b90ff32f6e9520bf7f0b8a001b667c25b6e1a454ad02b05e99b5b01d29a150509cf2d2293628211
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1nT9Qpm9PIGzjbUgX3iy7cadBE0QBDZUx:cu6YepTPso2GQG3b7XSy7cmVGdUx
TLSH
T13A231A003BE8812BF2BE4F78ACF26145867AF6672603D54D6CC451DB5723FC68A426ED
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

chichgai.one:80
chichgai.one:22
chichgai.one:8080
chichgai.one:8880
chichgai.one:2052
chichgai.one:2082
chichgai.one:2086
chichgai.one:2095
chichgai.one:443
chichgai.one:2053
chichgai.one:2083
chichgai.one:2087
chichgai.one:2096
chichgai.one:8443
www.chichgai.one:80
www.chichgai.one:22
www.chichgai.one:8080
www.chichgai.one:8880
www.chichgai.one:2052
www.chichgai.one:2082
www.chichgai.one:2086
www.chichgai.one:2095
www.chichgai.one:443
www.chichgai.one:2053
www.chichgai.one:2083
www.chichgai.one:2087
www.chichgai.one:2096
www.chichgai.one:8443
klez.chichgai.one:80
klez.chichgai.one:22
klez.chichgai.one:8080
klez.chichgai.one:8880
klez.chichgai.one:2052
klez.chichgai.one:2082
klez.chichgai.one:2086
klez.chichgai.one:2095
klez.chichgai.one:443
klez.chichgai.one:2053
klez.chichgai.one:2083
klez.chichgai.one:2087
klez.chichgai.one:2096
klez.chichgai.one:8443
rat.chichgai.one:80
rat.chichgai.one:22
rat.chichgai.one:8080
rat.chichgai.one:8880
rat.chichgai.one:2052
rat.chichgai.one:2082
rat.chichgai.one:2086
rat.chichgai.one:2095
rat.chichgai.one:443
rat.chichgai.one:2053
rat.chichgai.one:2083
rat.chichgai.one:2087
rat.chichgai.one:2096
rat.chichgai.one:8443
gozi.chichgai.one:80
gozi.chichgai.one:22
gozi.chichgai.one:8080
gozi.chichgai.one:8880
gozi.chichgai.one:2052
gozi.chichgai.one:2082
gozi.chichgai.one:2086
gozi.chichgai.one:2095
gozi.chichgai.one:443
gozi.chichgai.one:2053
gozi.chichgai.one:2083
gozi.chichgai.one:2087
gozi.chichgai.one:2096
gozi.chichgai.one:8443
blacklotus.chichgai.one:80
blacklotus.chichgai.one:22
blacklotus.chichgai.one:8080
blacklotus.chichgai.one:8880
blacklotus.chichgai.one:2052
blacklotus.chichgai.one:2082
blacklotus.chichgai.one:2086
blacklotus.chichgai.one:2095
blacklotus.chichgai.one:443
blacklotus.chichgai.one:2053
blacklotus.chichgai.one:2083
blacklotus.chichgai.one:2087
blacklotus.chichgai.one:2096
blacklotus.chichgai.one:8443

Mutex

32O1lzCg7wP2

Attributes

delay
0
install
true
install_file
f4zz94h5.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/0x000e00000001c52a-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4220	f4zz94h5.exe
5520	f4zz94h5.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
2964	cmd.exe
3256	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	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	f4zz94h5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4zz94h5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1092	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
4540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
Token: SeDebugPrivilege	4220	f4zz94h5.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 2964	4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe	89
PID 4344 wrote to memory of 3256	4344	3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe	90
PID 2964 wrote to memory of 4540	2964	cmd.exe	93
PID 3256 wrote to memory of 1092	3256	cmd.exe	94
PID 3256 wrote to memory of 5520	3256	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe
"C:\Users\Admin\AppData\Local\Temp\3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "f4zz94h5" /tr '"C:\Users\Admin\AppData\Roaming\f4zz94h5.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "f4zz94h5" /tr '"C:\Users\Admin\AppData\Roaming\f4zz94h5.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4540
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1B5E.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3256
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1092
- - C:\Users\Admin\AppData\Roaming\f4zz94h5.exe
    "C:\Users\Admin\AppData\Roaming\f4zz94h5.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5520

C:\Users\Admin\AppData\Roaming\f4zz94h5.exe
"C:\Users\Admin\AppData\Roaming\f4zz94h5.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4220

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

tmp1B5E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1B5E.tmp.bat
Size 152B
SHA256 8f2686f60007ad9cedec49ec251472d3848977be03e323a3522dce7bf891e432
MD5 04f3062dafa874f1581cdb8ccc537562
SHA1 6e76f866c6d9d9c9b582745dd119768425b2e2fe
SHA512 6c9f65ee537c6b36f233949f2bd9cc337a7b4af3a05efc559175126429a198f6bd37fc7a4176c2be0dd6b4dbfdf59ffa50479d8fc403a80ba4495e79373ebd1a
TLSH
T1E2C02B4375C9EA0FED09781303FAD88D9172BC193F40BB40D748440D228044DF0E9345
MD5 SHA1 SHA512 TLSH

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f4zz94h5.exe

Path C:\Users\Admin\AppData\Roaming\f4zz94h5.exe
Size 45KB
SHA256 3d31fd01617505597b063650a17544d185a9a8036f34a43488ffff743f8991c3
MD5 45c704d3a524838b6c03f13ec55bda63
SHA1 0f668a329f212059f6dfe7e03bc9493134e3f500
SHA512 6616cf1025103759207b53cb6caad26c27c68cefcb16af8a0b90ff32f6e9520bf7f0b8a001b667c25b6e1a454ad02b05e99b5b01d29a150509cf2d2293628211
SSDEEP 768:cu6RaepTPYzbs8WU+Xaamo2q1nT9Qpm9PIGzjbUgX3iy7cadBE0QBDZUx:cu6YepTPso2GQG3b7XSy7cmVGdUx
TLSH
T13A231A003BE8812BF2BE4F78ACF26145867AF6672603D54D6CC451DB5723FC68A426ED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4220-12-0x0000000074540000-0x0000000074CFC000-memory.dmp

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memory/4220-14-0x0000000074540000-0x0000000074CFC000-memory.dmp

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memory/4344-0-0x00000000746C2000-0x00000000746C3000-memory.dmp

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memory/4344-1-0x0000000000090000-0x00000000000A2000-memory.dmp

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memory/4344-2-0x00000000746B0000-0x0000000074E6C000-memory.dmp

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memory/4344-3-0x0000000004C30000-0x0000000004CCC000-memory.dmp

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memory/4344-8-0x00000000746B0000-0x0000000074E6C000-memory.dmp

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