asyncrat | db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c

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
18/07/2026, 16:49

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General

Target
db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
Size 45KB
Sample260718-vbv9csbs81
SHA256 db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c
MD5 0607ff2fc8d6312b9a5189aa8abe000c
SHA1 de0137a84bebe796af7015cd70e9cb1701e0dac7
SHA512 77696f45b61eeedc203e892c138c0552714a1de54ff396795c8fa301bc4b2aa399858f866c172aaf238c59c57cfbfab70694e4729919d7b19b0d70f9b9779303
SSDEEP 768:Au1YJTHwAUgQWUaT2Wmo2q90GFZQjB4PIFfzjbugX3ilCV2f6cOnp+dq9aDBDZQx:Au1YJTHcw2MqF9Ff3bRXSofc4p8XFdQx
TLSH
T119230A003BE9823BF2BE5F7898F26145867AF6733603D5491CC451D75623BC68A42AFE
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

zephimsexhay.com:80
zephimsexhay.com:22
zephimsexhay.com:8080
zephimsexhay.com:8880
zephimsexhay.com:2052
zephimsexhay.com:2082
zephimsexhay.com:2086
zephimsexhay.com:2095
zephimsexhay.com:443
zephimsexhay.com:2053
zephimsexhay.com:2083
zephimsexhay.com:2087
zephimsexhay.com:2096
zephimsexhay.com:8443
www.zephimsexhay.com:80
www.zephimsexhay.com:22
www.zephimsexhay.com:8080
www.zephimsexhay.com:8880
www.zephimsexhay.com:2052
www.zephimsexhay.com:2082
www.zephimsexhay.com:2086
www.zephimsexhay.com:2095
www.zephimsexhay.com:443
www.zephimsexhay.com:2053
www.zephimsexhay.com:2083
www.zephimsexhay.com:2087
www.zephimsexhay.com:2096
www.zephimsexhay.com:8443
client.zephimsexhay.com:80
client.zephimsexhay.com:22
client.zephimsexhay.com:8080
client.zephimsexhay.com:8880
client.zephimsexhay.com:2052
client.zephimsexhay.com:2082
client.zephimsexhay.com:2086
client.zephimsexhay.com:2095
client.zephimsexhay.com:443
client.zephimsexhay.com:2053
client.zephimsexhay.com:2083
client.zephimsexhay.com:2087
client.zephimsexhay.com:2096
client.zephimsexhay.com:8443
remcos.zephimsexhay.com:80
remcos.zephimsexhay.com:22
remcos.zephimsexhay.com:8080
remcos.zephimsexhay.com:8880
remcos.zephimsexhay.com:2052
remcos.zephimsexhay.com:2082
remcos.zephimsexhay.com:2086
remcos.zephimsexhay.com:2095
remcos.zephimsexhay.com:443
remcos.zephimsexhay.com:2053
remcos.zephimsexhay.com:2083
remcos.zephimsexhay.com:2087
remcos.zephimsexhay.com:2096
remcos.zephimsexhay.com:8443

Mutex

ASvtLTFvpFcH

Attributes

delay
0
install
true
install_file
zdifiv.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/0x000d00000001c5b9-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5608	zdifiv.exe
4964	zdifiv.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
2824	cmd.exe
6072	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	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.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	zdifiv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zdifiv.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2204	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
1920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
Token: SeDebugPrivilege	5608	zdifiv.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5800 wrote to memory of 2824	5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe	89
PID 5800 wrote to memory of 6072	5800	db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe	90
PID 2824 wrote to memory of 1920	2824	cmd.exe	93
PID 6072 wrote to memory of 2204	6072	cmd.exe	94
PID 6072 wrote to memory of 4964	6072	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe
"C:\Users\Admin\AppData\Local\Temp\db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "zdifiv" /tr '"C:\Users\Admin\AppData\Roaming\zdifiv.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2824
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "zdifiv" /tr '"C:\Users\Admin\AppData\Roaming\zdifiv.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9716.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6072
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2204
- - C:\Users\Admin\AppData\Roaming\zdifiv.exe
    "C:\Users\Admin\AppData\Roaming\zdifiv.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4964

C:\Users\Admin\AppData\Roaming\zdifiv.exe
"C:\Users\Admin\AppData\Roaming\zdifiv.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5608

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

tmp9716.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9716.tmp.bat
Size 150B
SHA256 509ee805f1af6e138b48abda37517825330bee97ce36e63173fae4d92e3614b7
MD5 bb188adb8c570e8e316bc8ea8bc18a4d
SHA1 494bb184c1a11732def9e6a1f7ac160558dbf9a6
SHA512 72412124a7fd3c5c7e5c6f1b55c9e7c1561ee799fd928c6a3396ea036bedae098d0f56353ee65c646a28f76556b98bda7a7f4771245b5f09b43cfda72185c926
TLSH
T107C02B4762C5FA5F3805185317FED99CE2B26DAD3F40FB00C344804D128044CF0D9341
MD5 SHA1 SHA512 TLSH

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zdifiv.exe

Path C:\Users\Admin\AppData\Roaming\zdifiv.exe
Size 45KB
SHA256 db98268ff957251163911dff8eabbbf4b264e6dbeab6df67aff88f5d31f47a5c
MD5 0607ff2fc8d6312b9a5189aa8abe000c
SHA1 de0137a84bebe796af7015cd70e9cb1701e0dac7
SHA512 77696f45b61eeedc203e892c138c0552714a1de54ff396795c8fa301bc4b2aa399858f866c172aaf238c59c57cfbfab70694e4729919d7b19b0d70f9b9779303
SSDEEP 768:Au1YJTHwAUgQWUaT2Wmo2q90GFZQjB4PIFfzjbugX3ilCV2f6cOnp+dq9aDBDZQx:Au1YJTHcw2MqF9Ff3bRXSofc4p8XFdQx
TLSH
T119230A003BE9823BF2BE5F7898F26145867AF6733603D5491CC451D75623BC68A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/5608-12-0x0000000074960000-0x000000007511C000-memory.dmp

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memory/5608-14-0x0000000074960000-0x000000007511C000-memory.dmp

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memory/5800-0-0x0000000074B12000-0x0000000074B13000-memory.dmp

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memory/5800-1-0x0000000000B90000-0x0000000000BA2000-memory.dmp

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memory/5800-2-0x0000000074B00000-0x00000000752BC000-memory.dmp

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memory/5800-3-0x00000000056B0000-0x000000000574C000-memory.dmp

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memory/5800-8-0x0000000074B00000-0x00000000752BC000-memory.dmp

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