xworm | 5332f713bef3ab58d7546f2b58e6eaf55c3e30969e15b6085a77e7fd9e7b65b4

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13/12/2024, 10:20

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General

Target
boleto.exe
Size 67KB
Sample241213-mc32laxkfk
SHA256 5332f713bef3ab58d7546f2b58e6eaf55c3e30969e15b6085a77e7fd9e7b65b4
MD5 2a4ccc3271d73fc4e17d21257ca9ee53
SHA1 931b0016cb82a0eb0fd390ac33bada4e646abae3
SHA512 00d6728fa5c2692dab96107187126a44e09976f0d26875f340b3ad0d3f202abb4fbc5426f2934096087ef6e404bc1dc21b6e6ebbacba172c383d57bdef185a74
SSDEEP 1536:5KENkX1OaEn4QcUwnnwIGTLT4EHdybUiW6pUWFgWLKd6Zm1OYPtdES:5++OnnRKXHUbflpVOEKIm1OYPcS
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

camp.zapto.org:7771

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1468-1-0x0000000000620000-0x0000000000638000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023b9c-49.dat	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3056	powershell.exe
4160	powershell.exe
4672	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	boleto.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1084	boleto.exe
5016	boleto.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\boleto = "C:\\Users\\Admin\\AppData\\Roaming\\boleto.exe"	boleto.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
14	ip-api.com

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3148	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4160	powershell.exe
4160	powershell.exe
4672	powershell.exe
4672	powershell.exe
3056	powershell.exe
3056	powershell.exe
1468	boleto.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1468	boleto.exe
Token: SeDebugPrivilege	4160	powershell.exe
Token: SeDebugPrivilege	4672	powershell.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	1468	boleto.exe
Token: SeDebugPrivilege	1084	boleto.exe
Token: SeDebugPrivilege	5016	boleto.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1468	boleto.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1468 wrote to memory of 4160	1468	boleto.exe	83
PID 1468 wrote to memory of 4160	1468	boleto.exe	83
PID 1468 wrote to memory of 4672	1468	boleto.exe	85
PID 1468 wrote to memory of 4672	1468	boleto.exe	85
PID 1468 wrote to memory of 3056	1468	boleto.exe	89
PID 1468 wrote to memory of 3056	1468	boleto.exe	89
PID 1468 wrote to memory of 3148	1468	boleto.exe	92
PID 1468 wrote to memory of 3148	1468	boleto.exe	92

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\boleto.exe
"C:\Users\Admin\AppData\Local\Temp\boleto.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1468
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\boleto.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4160
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'boleto.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\boleto.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "boleto" /tr "C:\Users\Admin\AppData\Roaming\boleto.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3148

C:\Users\Admin\AppData\Roaming\boleto.exe
C:\Users\Admin\AppData\Roaming\boleto.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1084

C:\Users\Admin\AppData\Roaming\boleto.exe
C:\Users\Admin\AppData\Roaming\boleto.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

boleto.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\boleto.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903
MD5 2979eabc783eaca50de7be23dd4eafcf
SHA1 d709ce5f3a06b7958a67e20870bfd95b83cad2ea
SHA512 92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 fd985ddd090621af25aa77aebff689c95ea7679ff0e81887124b2802ae3e9442
MD5 92075279f2dbcaa5724ee5a47e49712f
SHA1 8dd3e2faa8432dde978946ebaf9054f7c6e0b2cb
SHA512 744c62556233d9872f43ffb5a5a98aee20a44834436306f0a948c8c4072bdb46ef8044616593747edd645caaee60faf8b14fedb2d6df5f6019b5c73357d80d22
MD5 SHA1 SHA512

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__PSScriptPolicyTest_20jymxcq.qti.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_20jymxcq.qti.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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boleto.exe

Path C:\Users\Admin\AppData\Roaming\boleto.exe
Size 67KB
SHA256 5332f713bef3ab58d7546f2b58e6eaf55c3e30969e15b6085a77e7fd9e7b65b4
MD5 2a4ccc3271d73fc4e17d21257ca9ee53
SHA1 931b0016cb82a0eb0fd390ac33bada4e646abae3
SHA512 00d6728fa5c2692dab96107187126a44e09976f0d26875f340b3ad0d3f202abb4fbc5426f2934096087ef6e404bc1dc21b6e6ebbacba172c383d57bdef185a74
SSDEEP 1536:5KENkX1OaEn4QcUwnnwIGTLT4EHdybUiW6pUWFgWLKd6Zm1OYPtdES:5++OnnRKXHUbflpVOEKIm1OYPcS
MD5 SHA1 SHA512 SSDEEP

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memory/1468-0-0x00007FF982043000-0x00007FF982045000-memory.dmp

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memory/1468-2-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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memory/1468-46-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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memory/1468-1-0x0000000000620000-0x0000000000638000-memory.dmp

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memory/4160-5-0x000002DB7E4C0000-0x000002DB7E4E2000-memory.dmp

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memory/4160-17-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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memory/4160-18-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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memory/4160-4-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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memory/4160-3-0x00007FF982040000-0x00007FF982B01000-memory.dmp

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