asyncrat | 6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3

Analysis

max time kernel
6s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
10/07/2026, 11:42

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General

Target
6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
Size 45KB
Sample260710-nt85lsax2j
SHA256 6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3
MD5 642be6bed842d301494830622a91db47
SHA1 067feede630c32707f5ebbcb7d800923747ff1ae
SHA512 a29d61df2a9e5e72711a685628f2ce2a66b852431ac81f93f20cd647c74f4a7fd1e15249b2735524ddc651ba24e57942d87c7455c16f008c2a38bbdacb73558a
SSDEEP 768:4uBGJTP0BQ0UWUWHaimo2qVzsD/pneqPIkzjbFgX3iuSWA2ZaSi14UcGx1BDZ4x:4uBGJTPho2QsjJeTk3bCXSuSWA2Ub7cN
TLSH
T106232B1037E9812BF2BE4F78A8F26145867AF6633603D54A1CC051DB5613FC6CA52AFD
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
wannacry.phimsexvn.work:80
wannacry.phimsexvn.work:22
wannacry.phimsexvn.work:8080
wannacry.phimsexvn.work:8880
wannacry.phimsexvn.work:2052
wannacry.phimsexvn.work:2082
wannacry.phimsexvn.work:2086
wannacry.phimsexvn.work:2095
wannacry.phimsexvn.work:443
wannacry.phimsexvn.work:2053
wannacry.phimsexvn.work:2083
wannacry.phimsexvn.work:2087
wannacry.phimsexvn.work:2096
wannacry.phimsexvn.work:8443
malware.phimsexvn.work:80
malware.phimsexvn.work:22
malware.phimsexvn.work:8080
malware.phimsexvn.work:8880
malware.phimsexvn.work:2052
malware.phimsexvn.work:2082
malware.phimsexvn.work:2086
malware.phimsexvn.work:2095
malware.phimsexvn.work:443
malware.phimsexvn.work:2053
malware.phimsexvn.work:2083
malware.phimsexvn.work:2087
malware.phimsexvn.work:2096
malware.phimsexvn.work:8443
conti.phimsexvn.work:80
conti.phimsexvn.work:22
conti.phimsexvn.work:8080
conti.phimsexvn.work:8880
conti.phimsexvn.work:2052
conti.phimsexvn.work:2082
conti.phimsexvn.work:2086
conti.phimsexvn.work:2095
conti.phimsexvn.work:443
conti.phimsexvn.work:2053
conti.phimsexvn.work:2083
conti.phimsexvn.work:2087
conti.phimsexvn.work:2096
conti.phimsexvn.work:8443

Mutex

0KL0TuP3yiqB

Attributes

delay
0
install
true
install_file
vy4v.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/0x000f00000001b87e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2108	vy4v.exe
1408	vy4v.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vy4v.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vy4v.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4852	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
2236	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 1452	3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe	87
PID 3312 wrote to memory of 4140	3312	6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe	89
PID 4140 wrote to memory of 4852	4140	cmd.exe	91
PID 1452 wrote to memory of 2236	1452	cmd.exe	92
PID 4140 wrote to memory of 1408	4140	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe
"C:\Users\Admin\AppData\Local\Temp\6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "vy4v" /tr '"C:\Users\Admin\AppData\Roaming\vy4v.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1452
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "vy4v" /tr '"C:\Users\Admin\AppData\Roaming\vy4v.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2236
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2EB7.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4140
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4852
- - C:\Users\Admin\AppData\Roaming\vy4v.exe
    "C:\Users\Admin\AppData\Roaming\vy4v.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1408

C:\Users\Admin\AppData\Roaming\vy4v.exe
"C:\Users\Admin\AppData\Roaming\vy4v.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2108

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

tmp2EB7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp2EB7.tmp.bat
Size 148B
SHA256 ec4d8d6f1d2e5c24af5dffaf687ac86a62c3f167439b7b3978db450c78839123
MD5 9dcf9bb22e9743921469b14c848e53bc
SHA1 7a724d7fc3da5153e996fddd53d5481e8f8c6790
SHA512 9567026650a3c8ef4ce5251a31c9829e671ab2bde6cc68525456ce38e76c2d49dd6dfab5853323cd4f3e21a492f82e1c53dc26ff442d067327019f83e2c45e70
TLSH
T1E7C02B4772C5EE1F3805149702FAD48C91736C2D3F40BB10C744405D228084CF1EA346
MD5 SHA1 SHA512 TLSH

Submit Download

vy4v.exe

Path C:\Users\Admin\AppData\Roaming\vy4v.exe
Size 45KB
SHA256 6be763926f9221bb82ae13e71a67cc03de979cff7c7ba65b40f689a68ffee1b3
MD5 642be6bed842d301494830622a91db47
SHA1 067feede630c32707f5ebbcb7d800923747ff1ae
SHA512 a29d61df2a9e5e72711a685628f2ce2a66b852431ac81f93f20cd647c74f4a7fd1e15249b2735524ddc651ba24e57942d87c7455c16f008c2a38bbdacb73558a
SSDEEP 768:4uBGJTP0BQ0UWUWHaimo2qVzsD/pneqPIkzjbFgX3iuSWA2ZaSi14UcGx1BDZ4x:4uBGJTPho2QsjJeTk3bCXSuSWA2Ub7cN
TLSH
T106232B1037E9812BF2BE4F78A8F26145867AF6633603D54A1CC051DB5613FC6CA52AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2108-12-0x00000000750E0000-0x000000007589C000-memory.dmp

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memory/2108-14-0x00000000750E0000-0x000000007589C000-memory.dmp

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memory/3312-0-0x00000000750F2000-0x00000000750F3000-memory.dmp

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memory/3312-1-0x0000000000DD0000-0x0000000000DE2000-memory.dmp

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memory/3312-2-0x00000000750E0000-0x000000007589C000-memory.dmp

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memory/3312-3-0x00000000058D0000-0x000000000596C000-memory.dmp

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memory/3312-9-0x00000000750E0000-0x000000007589C000-memory.dmp

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