asyncrat | c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 14:58

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General

Target
c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
Size 45KB
Sample260710-scdplabv5q
SHA256 c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63
MD5 45c0513feb896e73690297e154796aca
SHA1 11f5a3ea76b378dbf14a86b6f4a9c41568667b5b
SHA512 40e7e05f8fd410ae9e6f3243f012db82364f9acc61a8f3099c121a9bbc19643edd4a6fd635071c0e50a81ce79dda3f5265d8734dbc75307cfea6154785e8c9bc
SSDEEP 768:EulCJTHESwgWUK3aGmo2q9hELO9YjMHPICUzjbQgX3iOgEOg1UMSaL11yc2BDZsx:EulCJTHl4206wgCU3bXXSOLOgnSgycYc
TLSH
T16B2309003BD9C12BF2BE4F78A9F26145867AF6633603D6891CC451DB5623FC68A426FD
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

phimsexvn.work:80
phimsexvn.work:22
phimsexvn.work:8080
phimsexvn.work:8880
phimsexvn.work:2052
phimsexvn.work:2082
phimsexvn.work:2086
phimsexvn.work:2095
phimsexvn.work:443
phimsexvn.work:2053
phimsexvn.work:2083
phimsexvn.work:2087
phimsexvn.work:2096
phimsexvn.work:8443
www.phimsexvn.work:80
www.phimsexvn.work:22
www.phimsexvn.work:8080
www.phimsexvn.work:8880
www.phimsexvn.work:2052
www.phimsexvn.work:2082
www.phimsexvn.work:2086
www.phimsexvn.work:2095
www.phimsexvn.work:443
www.phimsexvn.work:2053
www.phimsexvn.work:2083
www.phimsexvn.work:2087
www.phimsexvn.work:2096
www.phimsexvn.work:8443
invasive.phimsexvn.work:80
invasive.phimsexvn.work:22
invasive.phimsexvn.work:8080
invasive.phimsexvn.work:8880
invasive.phimsexvn.work:2052
invasive.phimsexvn.work:2082
invasive.phimsexvn.work:2086
invasive.phimsexvn.work:2095
invasive.phimsexvn.work:443
invasive.phimsexvn.work:2053
invasive.phimsexvn.work:2083
invasive.phimsexvn.work:2087
invasive.phimsexvn.work:2096
invasive.phimsexvn.work:8443
cl0p.phimsexvn.work:80
cl0p.phimsexvn.work:22
cl0p.phimsexvn.work:8080
cl0p.phimsexvn.work:8880
cl0p.phimsexvn.work:2052
cl0p.phimsexvn.work:2082
cl0p.phimsexvn.work:2086
cl0p.phimsexvn.work:2095
cl0p.phimsexvn.work:443
cl0p.phimsexvn.work:2053
cl0p.phimsexvn.work:2083
cl0p.phimsexvn.work:2087
cl0p.phimsexvn.work:2096
cl0p.phimsexvn.work:8443
gootloader.phimsexvn.work:80
gootloader.phimsexvn.work:22
gootloader.phimsexvn.work:8080
gootloader.phimsexvn.work:8880
gootloader.phimsexvn.work:2052
gootloader.phimsexvn.work:2082
gootloader.phimsexvn.work:2086
gootloader.phimsexvn.work:2095
gootloader.phimsexvn.work:443
gootloader.phimsexvn.work:2053
gootloader.phimsexvn.work:2083
gootloader.phimsexvn.work:2087
gootloader.phimsexvn.work:2096
gootloader.phimsexvn.work:8443

Mutex

qEmV2xYn68HT

Attributes

delay
0
install
true
install_file
n378sy.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/0x000e00000001c5b7-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3368	n378sy.exe
4924	n378sy.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	n378sy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	n378sy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.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
4900	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
1288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
Token: SeDebugPrivilege	3368	n378sy.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5968 wrote to memory of 3800	5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe	86
PID 5968 wrote to memory of 4624	5968	c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe	88
PID 3800 wrote to memory of 1288	3800	cmd.exe	90
PID 4624 wrote to memory of 4900	4624	cmd.exe	91
PID 4624 wrote to memory of 4924	4624	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe
"C:\Users\Admin\AppData\Local\Temp\c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "n378sy" /tr '"C:\Users\Admin\AppData\Roaming\n378sy.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3800
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "n378sy" /tr '"C:\Users\Admin\AppData\Roaming\n378sy.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1288
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF58.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4624
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4900
- - C:\Users\Admin\AppData\Roaming\n378sy.exe
    "C:\Users\Admin\AppData\Roaming\n378sy.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4924

C:\Users\Admin\AppData\Roaming\n378sy.exe
"C:\Users\Admin\AppData\Roaming\n378sy.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3368

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

tmpF58.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF58.tmp.bat
Size 149B
SHA256 0d5e49ed3552c65284087a7fbfa36309ca26172f7644a52a3103319e50cc8e08
MD5 092c50d3e142dfa91076e4371d5d2f53
SHA1 44aea43aa022ee2a9ec1c89e3d9a8f0cf37549ff
SHA512 1fdf45eeb9fc64c7b39b88a790ad40db5f85ac2a5e2320003d6c74af326a5808a852201f3fd4cc1fbdc4747661f9ce257500bd54a1d52269b86b9e774a09ad48
TLSH
T130C02B42D5C5FA0E38055C1302FAD4ADA1B6AC2E3F44FB20C304440D1280C58F4D9382
MD5 SHA1 SHA512 TLSH

Submit Download

n378sy.exe

Path C:\Users\Admin\AppData\Roaming\n378sy.exe
Size 45KB
SHA256 c50fcd4be44283ddd87bce9c546cf1bf0742b480b702d9d377157cf96c2dfa63
MD5 45c0513feb896e73690297e154796aca
SHA1 11f5a3ea76b378dbf14a86b6f4a9c41568667b5b
SHA512 40e7e05f8fd410ae9e6f3243f012db82364f9acc61a8f3099c121a9bbc19643edd4a6fd635071c0e50a81ce79dda3f5265d8734dbc75307cfea6154785e8c9bc
SSDEEP 768:EulCJTHESwgWUK3aGmo2q9hELO9YjMHPICUzjbQgX3iOgEOg1UMSaL11yc2BDZsx:EulCJTHl4206wgCU3bXXSOLOgnSgycYc
TLSH
T16B2309003BD9C12BF2BE4F78A9F26145867AF6633603D6891CC451DB5623FC68A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3368-12-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/3368-14-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/5968-0-0x00000000749F2000-0x00000000749F3000-memory.dmp

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memory/5968-1-0x0000000000A40000-0x0000000000A52000-memory.dmp

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memory/5968-2-0x00000000749E0000-0x000000007519C000-memory.dmp

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memory/5968-3-0x0000000005470000-0x000000000550C000-memory.dmp

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memory/5968-8-0x00000000749E0000-0x000000007519C000-memory.dmp

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