xworm | 4589073aab658c11af8490bc2d39d8b7c6d16e313320a9c67a6cbb7408f8af4a

Resubmissions

11-08-2024 23:49

240811-3t2svszbkg 10

10-08-2024 12:02

240810-n7h6caybrp 10

Analysis

max time kernel
489s
max time network
498s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10-08-2024 12:02

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General

Target

ExReporterFIX.exe
Size

65KB
MD5

5d36dc879659d7eecf5a0867bbd05165
SHA1

d23b8a98691b5a0379f761ea1669869690e3fd9f
SHA256

4589073aab658c11af8490bc2d39d8b7c6d16e313320a9c67a6cbb7408f8af4a
SHA512

854bc8b9406bcc57cc56ff4d19bae4cc8a18a4fa4f4543c6064413e004a34386dec35dfd617c181d163d5038e068fd442a4eb4a45caa9905c78c29ee210864f4
SSDEEP

1536:kxJhEM7T/hC+xaaGbb05/Txd4j6txHO56197:YJ+MnheaMb0NHO56f7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

21.ip.gl.ply.gg:21222

Attributes

Install_directory
%LocalAppData%
install_file
ExReporters.exe
telegram
https://api.telegram.org/bot7307556336:AAFxy7gvsomu0v1K0jbYvC1K7DBoqhWv9ek/sendMessage?chat_id=1748805076

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4540-1-0x00000000002C0000-0x00000000002D6000-memory.dmp	family_xworm
behavioral1/files/0x000d00000001ab3d-187.dat	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4976	powershell.exe
4408	powershell.exe
4644	powershell.exe
4064	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 8 IoCs

pid	Process
4636	ExReporters.exe
4128	ExReporters.exe
1336	ExReporters.exe
5032	ExReporters.exe
4664	ExReporters.exe
4824	ExReporters.exe
2268	ExReporters.exe
5072	ExReporters.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-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\ExReporters = "C:\\Users\\Admin\\AppData\\Local\\ExReporters.exe"	ExReporterFIX.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
1	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
2916	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
4976	powershell.exe
4976	powershell.exe
4976	powershell.exe
4408	powershell.exe
4408	powershell.exe
4408	powershell.exe
4644	powershell.exe
4644	powershell.exe
4644	powershell.exe
4064	powershell.exe
4064	powershell.exe
4064	powershell.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe
4540	ExReporterFIX.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4540	ExReporterFIX.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeIncreaseQuotaPrivilege	4976	powershell.exe
Token: SeSecurityPrivilege	4976	powershell.exe
Token: SeTakeOwnershipPrivilege	4976	powershell.exe
Token: SeLoadDriverPrivilege	4976	powershell.exe
Token: SeSystemProfilePrivilege	4976	powershell.exe
Token: SeSystemtimePrivilege	4976	powershell.exe
Token: SeProfSingleProcessPrivilege	4976	powershell.exe
Token: SeIncBasePriorityPrivilege	4976	powershell.exe
Token: SeCreatePagefilePrivilege	4976	powershell.exe
Token: SeBackupPrivilege	4976	powershell.exe
Token: SeRestorePrivilege	4976	powershell.exe
Token: SeShutdownPrivilege	4976	powershell.exe
Token: SeDebugPrivilege	4976	powershell.exe
Token: SeSystemEnvironmentPrivilege	4976	powershell.exe
Token: SeRemoteShutdownPrivilege	4976	powershell.exe
Token: SeUndockPrivilege	4976	powershell.exe
Token: SeManageVolumePrivilege	4976	powershell.exe
Token: 33	4976	powershell.exe
Token: 34	4976	powershell.exe
Token: 35	4976	powershell.exe
Token: 36	4976	powershell.exe
Token: SeDebugPrivilege	4408	powershell.exe
Token: SeIncreaseQuotaPrivilege	4408	powershell.exe
Token: SeSecurityPrivilege	4408	powershell.exe
Token: SeTakeOwnershipPrivilege	4408	powershell.exe
Token: SeLoadDriverPrivilege	4408	powershell.exe
Token: SeSystemProfilePrivilege	4408	powershell.exe
Token: SeSystemtimePrivilege	4408	powershell.exe
Token: SeProfSingleProcessPrivilege	4408	powershell.exe
Token: SeIncBasePriorityPrivilege	4408	powershell.exe
Token: SeCreatePagefilePrivilege	4408	powershell.exe
Token: SeBackupPrivilege	4408	powershell.exe
Token: SeRestorePrivilege	4408	powershell.exe
Token: SeShutdownPrivilege	4408	powershell.exe
Token: SeDebugPrivilege	4408	powershell.exe
Token: SeSystemEnvironmentPrivilege	4408	powershell.exe
Token: SeRemoteShutdownPrivilege	4408	powershell.exe
Token: SeUndockPrivilege	4408	powershell.exe
Token: SeManageVolumePrivilege	4408	powershell.exe
Token: 33	4408	powershell.exe
Token: 34	4408	powershell.exe
Token: 35	4408	powershell.exe
Token: 36	4408	powershell.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeIncreaseQuotaPrivilege	4644	powershell.exe
Token: SeSecurityPrivilege	4644	powershell.exe
Token: SeTakeOwnershipPrivilege	4644	powershell.exe
Token: SeLoadDriverPrivilege	4644	powershell.exe
Token: SeSystemProfilePrivilege	4644	powershell.exe
Token: SeSystemtimePrivilege	4644	powershell.exe
Token: SeProfSingleProcessPrivilege	4644	powershell.exe
Token: SeIncBasePriorityPrivilege	4644	powershell.exe
Token: SeCreatePagefilePrivilege	4644	powershell.exe
Token: SeBackupPrivilege	4644	powershell.exe
Token: SeRestorePrivilege	4644	powershell.exe
Token: SeShutdownPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeSystemEnvironmentPrivilege	4644	powershell.exe
Token: SeRemoteShutdownPrivilege	4644	powershell.exe
Token: SeUndockPrivilege	4644	powershell.exe
Token: SeManageVolumePrivilege	4644	powershell.exe
Token: 33	4644	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4540	ExReporterFIX.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 4976	4540	ExReporterFIX.exe	74
PID 4540 wrote to memory of 4976	4540	ExReporterFIX.exe	74
PID 4540 wrote to memory of 4408	4540	ExReporterFIX.exe	77
PID 4540 wrote to memory of 4408	4540	ExReporterFIX.exe	77
PID 4540 wrote to memory of 4644	4540	ExReporterFIX.exe	79
PID 4540 wrote to memory of 4644	4540	ExReporterFIX.exe	79
PID 4540 wrote to memory of 4064	4540	ExReporterFIX.exe	81
PID 4540 wrote to memory of 4064	4540	ExReporterFIX.exe	81
PID 4540 wrote to memory of 2916	4540	ExReporterFIX.exe	83
PID 4540 wrote to memory of 2916	4540	ExReporterFIX.exe	83

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\ExReporterFIX.exe
"C:\Users\Admin\AppData\Local\Temp\ExReporterFIX.exe"
1⤵
- 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:4540
- 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\ExReporterFIX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4976
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ExReporterFIX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4408
- 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\ExReporters.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ExReporters.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:4064
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "ExReporters" /tr "C:\Users\Admin\AppData\Local\ExReporters.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2916

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:4636

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:4128

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:1336

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:5032

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:4664

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:4824

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:2268

C:\Users\Admin\AppData\Local\ExReporters.exe
C:\Users\Admin\AppData\Local\ExReporters.exe
1⤵
- Executes dropped EXE
PID:5072

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

C:\Users\Admin\AppData\Local\ExReporters.exe

Filesize
65KB

MD5
5d36dc879659d7eecf5a0867bbd05165

SHA1
d23b8a98691b5a0379f761ea1669869690e3fd9f

SHA256
4589073aab658c11af8490bc2d39d8b7c6d16e313320a9c67a6cbb7408f8af4a

SHA512
854bc8b9406bcc57cc56ff4d19bae4cc8a18a4fa4f4543c6064413e004a34386dec35dfd617c181d163d5038e068fd442a4eb4a45caa9905c78c29ee210864f4

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ExReporters.exe.log

Filesize
654B

MD5
16c5fce5f7230eea11598ec11ed42862

SHA1
75392d4824706090f5e8907eee1059349c927600

SHA256
87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151

SHA512
153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc

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

Filesize
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

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

Filesize
1KB

MD5
d9812d048e25a91202aaca0e520060fa

SHA1
c09c7587f581b21df0ad4616a69e572fe788ba31

SHA256
ba39329d3994ba22b8ecc24b3ca14b046e943232e628c547ee606e41afc0d3d8

SHA512
d11eb5efa33f37d645dc50025a1158e3541ad7c5ba4890758ceb9004eb15f90025ebfeca07c29eaa5b2e94062f2664d178e04f560b3ae75373e011ee16f4ef2f

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

Filesize
1KB

MD5
edc23aa1836049d8bbbab795ef86ac62

SHA1
1c74aabfcecc6c94bf95f8888cce596fb405925b

SHA256
c2527e88b4e629c05492b1666ab727d3ac140ac9f26b500bb84e92cb762b7653

SHA512
fbbab9a8a51aab930dbd1be13b6af98c6f345d2317c53bcd51464c1b6198e83c7e26ca4a90e30983073667978f313dbd44cb4a03e48d8322191ec3c0a966d863

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

Filesize
1KB

MD5
0be465f7aac6421d6a74132aaa8849e7

SHA1
28a7e0bfa7e1d7a47043707664f62d27b68b22cb

SHA256
673ebdaf07f22cb5406663ca2cfad11dacc0f9b6b5772cc71cff8763f1dbb9eb

SHA512
6fc25e9eeadd535d52f9dcb5e32ff52cb0115d332626baf8dd6f96f48383ec0dbf10f88b53d8b5c34a5d8ccf35ecde674b5e670434d3eb02ed5cc060b66de7ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_riuwocfb.jbr.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
memory/4540-198-0x0000000000930000-0x000000000093C000-memory.dmp

Filesize
48KB

Download
memory/4540-0-0x00007FFCC3B93000-0x00007FFCC3B94000-memory.dmp

Filesize
4KB

Download
memory/4540-2-0x00007FFCC3B90000-0x00007FFCC457C000-memory.dmp

Filesize
9.9MB

Download
memory/4540-1-0x00000000002C0000-0x00000000002D6000-memory.dmp

Filesize
88KB

Download
memory/4540-186-0x00007FFCC3B90000-0x00007FFCC457C000-memory.dmp

Filesize
9.9MB

Download
memory/4540-185-0x00007FFCC3B93000-0x00007FFCC3B94000-memory.dmp

Filesize
4KB

Download
memory/4976-8-0x00007FFCC3B90000-0x00007FFCC457C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-50-0x00007FFCC3B90000-0x00007FFCC457C000-memory.dmp

Filesize
9.9MB

Download
memory/4976-12-0x0000016477F30000-0x0000016477FA6000-memory.dmp

Filesize
472KB

Download
memory/4976-9-0x0000016477D80000-0x0000016477DA2000-memory.dmp

Filesize
136KB

Download
memory/4976-7-0x00007FFCC3B90000-0x00007FFCC457C000-memory.dmp

Filesize
9.9MB

Download