asyncrat | b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5

Analysis

max time kernel
148s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/08/2026, 17:49

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General

Target
b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
Size 45KB
Sample260801-webjssee26
SHA256 b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5
MD5 9212c9d85df0e21a54bb7c1e6474db0a
SHA1 518b3c1139c54bb42c38028277c8c4218d5a7bb6
SHA512 a0ead650b4536eca2fbca82c5df885bc56a2ee3243672d7d80bcea7f69873f57d7b6fa885eb8ab47ac205d31e6ddbc14cb64ab1fa68ee047bf2d3b9818707921
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNvozfy3CKPI0VjbKgX3ifpwKcIrsWOu/pBDZ0x:5uSy6pTpoo2xTR09bdXSmKcIrs7md0x
TLSH
T104232B0037E9822BF2BE5F789DF26145867AF5633603D6891CC4119B5723FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

xemsexmy.org:80
xemsexmy.org:22
xemsexmy.org:8080
xemsexmy.org:8880
xemsexmy.org:2052
xemsexmy.org:2082
xemsexmy.org:2086
xemsexmy.org:2095
xemsexmy.org:443
xemsexmy.org:2053
xemsexmy.org:2083
xemsexmy.org:2087
xemsexmy.org:2096
xemsexmy.org:8443
www.xemsexmy.org:80
www.xemsexmy.org:22
www.xemsexmy.org:8080
www.xemsexmy.org:8880
www.xemsexmy.org:2052
www.xemsexmy.org:2082
www.xemsexmy.org:2086
www.xemsexmy.org:2095
www.xemsexmy.org:443
www.xemsexmy.org:2053
www.xemsexmy.org:2083
www.xemsexmy.org:2087
www.xemsexmy.org:2096
www.xemsexmy.org:8443
conficker.xemsexmy.org:80
conficker.xemsexmy.org:22
conficker.xemsexmy.org:8080
conficker.xemsexmy.org:8880
conficker.xemsexmy.org:2052
conficker.xemsexmy.org:2082
conficker.xemsexmy.org:2086
conficker.xemsexmy.org:2095
conficker.xemsexmy.org:443
conficker.xemsexmy.org:2053
conficker.xemsexmy.org:2083
conficker.xemsexmy.org:2087
conficker.xemsexmy.org:2096
conficker.xemsexmy.org:8443
hacker.xemsexmy.org:80
hacker.xemsexmy.org:22
hacker.xemsexmy.org:8080
hacker.xemsexmy.org:8880
hacker.xemsexmy.org:2052
hacker.xemsexmy.org:2082
hacker.xemsexmy.org:2086
hacker.xemsexmy.org:2095
hacker.xemsexmy.org:443
hacker.xemsexmy.org:2053
hacker.xemsexmy.org:2083
hacker.xemsexmy.org:2087
hacker.xemsexmy.org:2096
hacker.xemsexmy.org:8443

Mutex

I74vqBemXOgo

Attributes

delay
0
install
true
install_file
zsotr5c.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/0x000e00000001c581-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
856	zsotr5c.exe
2748	zsotr5c.exe

Outbound SSH connection to public host 2 TTPs 2 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc
SSH destination	17	104.21.32.163:22
SSH destination	18	172.67.152.224:22

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
860	cmd.exe
3080	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	zsotr5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zsotr5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.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	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1544	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
2620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
Token: SeDebugPrivilege	856	zsotr5c.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4004 wrote to memory of 860	4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe	89
PID 4004 wrote to memory of 3080	4004	b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe	91
PID 3080 wrote to memory of 1544	3080	cmd.exe	93
PID 860 wrote to memory of 2620	860	cmd.exe	94
PID 3080 wrote to memory of 2748	3080	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe
"C:\Users\Admin\AppData\Local\Temp\b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "zsotr5c" /tr '"C:\Users\Admin\AppData\Roaming\zsotr5c.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:860
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "zsotr5c" /tr '"C:\Users\Admin\AppData\Roaming\zsotr5c.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2620
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAA8E.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3080
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1544
- - C:\Users\Admin\AppData\Roaming\zsotr5c.exe
    "C:\Users\Admin\AppData\Roaming\zsotr5c.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2748

C:\Users\Admin\AppData\Roaming\zsotr5c.exe
"C:\Users\Admin\AppData\Roaming\zsotr5c.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:856

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

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

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Downloads

tmpAA8E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpAA8E.tmp.bat
Size 151B
SHA256 084ac54123bb7eb2c98ceda3ead7b42ae4e2c3e996dba7e6bd79480ebdf5c72d
MD5 945601ed0939dbd72bbcfe844a899fc0
SHA1 ed17f2cf1552b6f5f4edc30d877146367dccb39b
SHA512 c9a1386886fc02cd5de3cd3bf9f057a16abe003df2cf1e9530855d3563d98757f4a261c31025976a86dafc20478ae0a7479769978188dc598b2938d41217bc66
TLSH
T1D0C02BC291C6EB7F2806241302FBDC8E92766C5D3F44BB40C308400D268045DF0E9341
MD5 SHA1 SHA512 TLSH

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zsotr5c.exe

Path C:\Users\Admin\AppData\Roaming\zsotr5c.exe
Size 45KB
SHA256 b505b4f7d50138d6933cd2860ad61c379c429d072ee72a0670a865ac1bef8cc5
MD5 9212c9d85df0e21a54bb7c1e6474db0a
SHA1 518b3c1139c54bb42c38028277c8c4218d5a7bb6
SHA512 a0ead650b4536eca2fbca82c5df885bc56a2ee3243672d7d80bcea7f69873f57d7b6fa885eb8ab47ac205d31e6ddbc14cb64ab1fa68ee047bf2d3b9818707921
SSDEEP 768:5uSy6pTpwrSWWUE3/WImo2qNvozfy3CKPI0VjbKgX3ifpwKcIrsWOu/pBDZ0x:5uSy6pTpoo2xTR09bdXSmKcIrs7md0x
TLSH
T104232B0037E9822BF2BE5F789DF26145867AF5633603D6891CC4119B5723FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/856-12-0x0000000075090000-0x000000007584C000-memory.dmp

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memory/856-14-0x0000000075090000-0x000000007584C000-memory.dmp

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memory/4004-0-0x00000000750A2000-0x00000000750A3000-memory.dmp

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memory/4004-1-0x00000000004A0000-0x00000000004B2000-memory.dmp

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memory/4004-2-0x0000000075090000-0x000000007584C000-memory.dmp

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memory/4004-3-0x0000000004FD0000-0x000000000506C000-memory.dmp

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memory/4004-9-0x0000000075090000-0x000000007584C000-memory.dmp

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