asyncrat | 38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
15/07/2026, 11:39

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General

Target
38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
Size 45KB
Sample260715-nsa67abs7k
SHA256 38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208
MD5 d3f3a544069174377566320272f34f2d
SHA1 3563e497f2d800079764bca635c23b5a8d25eda6
SHA512 17ab2624cf1abac5c02c4059ccdca284efab24f441ee939876fce09ba6f3f12521026f3875096775ffcd9fd35022a4532bab6e8bb3013856a9883c50e7c3c325
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYEZoQTMtPI4njbUgX3i4HmV8QGe0UROqdynBDZ0x:8uuSpTgyf2sL34jb7XS4GVAHd0x
TLSH
T1E5232B0037E9812BF2BE4F7898F26145867AF6673A03D58D1CC451DB1623FC69A426FE
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

sexviet11.com:80
sexviet11.com:22
sexviet11.com:8080
sexviet11.com:8880
sexviet11.com:2052
sexviet11.com:2082
sexviet11.com:2086
sexviet11.com:2095
sexviet11.com:443
sexviet11.com:2053
sexviet11.com:2083
sexviet11.com:2087
sexviet11.com:2096
sexviet11.com:8443
www.sexviet11.com:80
www.sexviet11.com:22
www.sexviet11.com:8080
www.sexviet11.com:8880
www.sexviet11.com:2052
www.sexviet11.com:2082
www.sexviet11.com:2086
www.sexviet11.com:2095
www.sexviet11.com:443
www.sexviet11.com:2053
www.sexviet11.com:2083
www.sexviet11.com:2087
www.sexviet11.com:2096
www.sexviet11.com:8443
malware.sexviet11.com:80
malware.sexviet11.com:22
malware.sexviet11.com:8080
malware.sexviet11.com:8880
malware.sexviet11.com:2052
malware.sexviet11.com:2082
malware.sexviet11.com:2086
malware.sexviet11.com:2095
malware.sexviet11.com:443
malware.sexviet11.com:2053
malware.sexviet11.com:2083
malware.sexviet11.com:2087
malware.sexviet11.com:2096
malware.sexviet11.com:8443
client.sexviet11.com:80
client.sexviet11.com:22
client.sexviet11.com:8080
client.sexviet11.com:8880
client.sexviet11.com:2052
client.sexviet11.com:2082
client.sexviet11.com:2086
client.sexviet11.com:2095
client.sexviet11.com:443
client.sexviet11.com:2053
client.sexviet11.com:2083
client.sexviet11.com:2087
client.sexviet11.com:2096
client.sexviet11.com:8443
iloveyou.sexviet11.com:80
iloveyou.sexviet11.com:22
iloveyou.sexviet11.com:8080
iloveyou.sexviet11.com:8880
iloveyou.sexviet11.com:2052
iloveyou.sexviet11.com:2082
iloveyou.sexviet11.com:2086
iloveyou.sexviet11.com:2095
iloveyou.sexviet11.com:443
iloveyou.sexviet11.com:2053
iloveyou.sexviet11.com:2083
iloveyou.sexviet11.com:2087
iloveyou.sexviet11.com:2096
iloveyou.sexviet11.com:8443
nanocore.sexviet11.com:80
nanocore.sexviet11.com:22
nanocore.sexviet11.com:8080
nanocore.sexviet11.com:8880
nanocore.sexviet11.com:2052
nanocore.sexviet11.com:2082
nanocore.sexviet11.com:2086
nanocore.sexviet11.com:2095
nanocore.sexviet11.com:443
nanocore.sexviet11.com:2053
nanocore.sexviet11.com:2083
nanocore.sexviet11.com:2087
nanocore.sexviet11.com:2096
nanocore.sexviet11.com:8443

Mutex

Hxh9LDbd4bS4

Attributes

delay
0
install
true
install_file
pprexc.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/0x000e00000001c505-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3244	pprexc.exe
5232	pprexc.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pprexc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pprexc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4496	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
2504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 2544	624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe	87
PID 624 wrote to memory of 4588	624	38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe	89
PID 2544 wrote to memory of 2504	2544	cmd.exe	91
PID 4588 wrote to memory of 4496	4588	cmd.exe	92
PID 4588 wrote to memory of 5232	4588	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe
"C:\Users\Admin\AppData\Local\Temp\38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "pprexc" /tr '"C:\Users\Admin\AppData\Roaming\pprexc.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "pprexc" /tr '"C:\Users\Admin\AppData\Roaming\pprexc.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2504
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3E38.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4496
- - C:\Users\Admin\AppData\Roaming\pprexc.exe
    "C:\Users\Admin\AppData\Roaming\pprexc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5232

C:\Users\Admin\AppData\Roaming\pprexc.exe
"C:\Users\Admin\AppData\Roaming\pprexc.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3244

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

tmp3E38.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp3E38.tmp.bat
Size 150B
SHA256 21f74bc5822332f4fb9f7f6c183df1edf0896ce2dc1a8bb7a625eacecb06228b
MD5 57311fdbfc931d45d944e9497b21e0c1
SHA1 ca0a4c494b0242aaef96f0d3c8000c8d6b9ea241
SHA512 91dc5ce9856c60427c06c23a181f510cc11cd0c1e827fe9d0821ff895acf12c38f2c40472a6c9f46105b3a59bf4a10cf95c328e99b436b403d7349ab1b5fea78
TLSH
T1F7C02B5795C6EB4E6D09189313FAD48CA1736C193F84BB10D308804D2280849F0DD349
MD5 SHA1 SHA512 TLSH

Submit Download

pprexc.exe

Path C:\Users\Admin\AppData\Roaming\pprexc.exe
Size 45KB
SHA256 38a4ecc24ee77c4de5860550530fb5bf75702b5fde298ef332397e98e64f1208
MD5 d3f3a544069174377566320272f34f2d
SHA1 3563e497f2d800079764bca635c23b5a8d25eda6
SHA512 17ab2624cf1abac5c02c4059ccdca284efab24f441ee939876fce09ba6f3f12521026f3875096775ffcd9fd35022a4532bab6e8bb3013856a9883c50e7c3c325
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYEZoQTMtPI4njbUgX3i4HmV8QGe0UROqdynBDZ0x:8uuSpTgyf2sL34jb7XS4GVAHd0x
TLSH
T1E5232B0037E9812BF2BE4F7898F26145867AF6673A03D58D1CC451DB1623FC69A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/624-0-0x0000000074C32000-0x0000000074C33000-memory.dmp

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memory/624-1-0x0000000000070000-0x0000000000082000-memory.dmp

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memory/624-2-0x0000000074C20000-0x00000000753DC000-memory.dmp

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memory/624-3-0x0000000004BC0000-0x0000000004C5C000-memory.dmp

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memory/624-8-0x0000000074C20000-0x00000000753DC000-memory.dmp

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memory/3244-12-0x0000000074C20000-0x00000000753DC000-memory.dmp

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memory/3244-14-0x0000000074C20000-0x00000000753DC000-memory.dmp

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