xworm | 9f48bafc8116d691886054d64bd81dd84cf5114c84b72eb7ffcf8b9bac4341b4

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 15:25

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General

Target
XBinderOutput.exe
Size 81KB
Sample240420-stzy6acb2v
SHA256 9f48bafc8116d691886054d64bd81dd84cf5114c84b72eb7ffcf8b9bac4341b4
MD5 6a473a6fbeda2aa9557f5fb7eab5c9c6
SHA1 eb79bcf494c6cc5852b2439bc7ecdf04adf92b4e
SHA512 8a8fa406029ccd61907ad9cb18d9333c067eea2d81dbe079d658c8e3533e401027de95c1c77afe09b6d55695438e01a6dd677f14b94bb490bad51f959b3e5fbf
SSDEEP 1536:IzJVjzYoptrwvJBDrqiYQ9SZxlc9lQPykpl6VPM/qy:kyoptk/qcgc9+aQ6hu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

million-houston.gl.at.ply.gg:27705

Attributes

Install_directory
%AppData%
install_file
BloxstrapModded.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000233f0-23.dat	family_xworm
behavioral2/memory/4796-32-0x0000000000D80000-0x0000000000D9A000-memory.dmp	family_xworm

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

Checks computer location settings 2 TTPs 3 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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	XBinderOutput.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	BloxstrapModded.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4504	BloxstrapModded.exe
4796	XClient.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
32	ip-api.com

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000_Classes\Local Settings	BloxstrapModded.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2148	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4768	powershell.exe
4768	powershell.exe
4768	powershell.exe
2660	powershell.exe
2660	powershell.exe
2660	powershell.exe
4436	powershell.exe
4436	powershell.exe
4436	powershell.exe
4880	powershell.exe
4880	powershell.exe
4880	powershell.exe
4796	XClient.exe
4796	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4796	XClient.exe
Token: SeDebugPrivilege	4768	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	4436	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	4796	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4796	XClient.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 4504	3140	XBinderOutput.exe	90
PID 3140 wrote to memory of 4504	3140	XBinderOutput.exe	90
PID 4504 wrote to memory of 4796	4504	BloxstrapModded.exe	94
PID 4504 wrote to memory of 4796	4504	BloxstrapModded.exe	94
PID 4504 wrote to memory of 2148	4504	BloxstrapModded.exe	95
PID 4504 wrote to memory of 2148	4504	BloxstrapModded.exe	95
PID 4796 wrote to memory of 4768	4796	XClient.exe	97
PID 4796 wrote to memory of 4768	4796	XClient.exe	97
PID 4796 wrote to memory of 2660	4796	XClient.exe	100
PID 4796 wrote to memory of 2660	4796	XClient.exe	100
PID 4796 wrote to memory of 4436	4796	XClient.exe	102
PID 4796 wrote to memory of 4436	4796	XClient.exe	102
PID 4796 wrote to memory of 4880	4796	XClient.exe	104
PID 4796 wrote to memory of 4880	4796	XClient.exe	104

C:\Users\Admin\AppData\Local\Temp\XBinderOutput.exe
"C:\Users\Admin\AppData\Local\Temp\XBinderOutput.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Local\Temp\BloxstrapModded.exe
  "C:\Users\Admin\AppData\Local\Temp\BloxstrapModded.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4796
  - - 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\XClient.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4768
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2660
  - - 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\BloxstrapModded.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4436
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'BloxstrapModded.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4880
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\README.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:2148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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 95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010
MD5 62623d22bd9e037191765d5083ce16a3
SHA1 4a07da6872672f715a4780513d95ed8ddeefd259
SHA512 9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 fff934d70d813381536d272c5b8ac6ad70acd054267b13592da767c9bd1dda62
MD5 993af531f0b57e8128ec273731c3a8e2
SHA1 a42ea55876f4f390837dd2c95fb7ff2344b6e9e1
SHA512 bdf5970ff2ee314dc297fce5c0f44765e77acbf269cd9ad9e7448a391d5f80d66a0c5426f99bc3480851e8763413aa180b3b3b6b22ef0e86a365450cb8c334e4
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d
MD5 34f595487e6bfd1d11c7de88ee50356a
SHA1 4caad088c15766cc0fa1f42009260e9a02f953bb
SHA512 10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b
MD5 SHA1 SHA512

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BloxstrapModded.exe

Path C:\Users\Admin\AppData\Local\Temp\BloxstrapModded.exe
Size 10.0MB
SHA256 71cc081cbe5e67b32b6b07ca8e63211610e6a52d477f8afc32521a0b1cfd1f45
MD5 d4823d25c86c905b29ff3cd42127d5b3
SHA1 4380e4416b419f1bde9ee98c45b14fc7f29e8876
SHA512 e9d12f0e1c4c2a434c6ec8a004d85141a6f6bc6a81179d7f9200d387a8f7031554615a39e33384694c2e8291ebab533c3c703d927498480078a87b6f49520152
SSDEEP 1536:EctSNh5dMtrBDrqiYQ92Zxlc9lQPykplbTqr:Z8NhviV/qcwc9+aQby
MD5 SHA1 SHA512 SSDEEP

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README.txt

Path C:\Users\Admin\AppData\Local\Temp\README.txt
Size 438B
SHA256 0ca739b146beb166072cb199c8090f98140b88c5a7c251cf4ed730487507936c
MD5 659061a5689cae197b49f62be53bcf40
SHA1 6467f2252645e7ce87932aad37e24a6eed3fefeb
SHA512 f5933100e6ce6a030cb7ee36213308cfa4b05859b903564c4d711e60433079dd8182922ea45f25ec8b8defca90c5aa56a94bce031e5aa0e35e11ae19fb858567
MD5 SHA1 SHA512

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XClient.exe

Path C:\Users\Admin\AppData\Local\Temp\XClient.exe
Size 80KB
SHA256 ebabe3ead25f28d4fe0a3ab1a592d7160065995da465ec549ebe8f27ba5eeee9
MD5 cfeb71480542c9b6d6aec88f02e6d820
SHA1 4fcf90f5f8e16dcee2fa5ee1611394533f7ff740
SHA512 e5d1a95fe948e295f0f7cc55f88464136e088b0c7f531a132eab76025885f2de93d101981fc3dedc4bd7ed271b58578bcab235fc9d2bedca6e209fb3f7d594bd
SSDEEP 1536:gUfXQfYpjtVQOyScTbFAtNT6MyOiPtQjGG8qC:BZpjjtBcTbFOKOWtQiG2
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_iztraoev.urt.ps1

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

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memory/2660-69-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/2660-66-0x0000026E042E0000-0x0000026E042F0000-memory.dmp

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memory/2660-67-0x0000026E042E0000-0x0000026E042F0000-memory.dmp

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memory/2660-64-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/3140-0-0x0000000000840000-0x000000000085A000-memory.dmp

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memory/3140-15-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/3140-2-0x000000001B430000-0x000000001B440000-memory.dmp

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memory/3140-1-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4436-79-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4436-81-0x00000224772D0000-0x00000224772E0000-memory.dmp

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memory/4436-83-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4504-16-0x0000000000860000-0x0000000000874000-memory.dmp

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memory/4504-35-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4504-17-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4504-19-0x000000001B580000-0x000000001B590000-memory.dmp

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memory/4768-45-0x000002A3EB0E0000-0x000002A3EB0F0000-memory.dmp

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memory/4768-38-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4768-53-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4768-50-0x000002A3EBBA0000-0x000002A3EBBC2000-memory.dmp

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memory/4768-39-0x000002A3EB0E0000-0x000002A3EB0F0000-memory.dmp

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memory/4796-103-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4796-32-0x0000000000D80000-0x0000000000D9A000-memory.dmp

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memory/4796-37-0x000000001BBD0000-0x000000001BBE0000-memory.dmp

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memory/4796-34-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4796-104-0x000000001BBD0000-0x000000001BBE0000-memory.dmp

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memory/4880-95-0x000002A35F780000-0x000002A35F790000-memory.dmp

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memory/4880-98-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4880-93-0x00007FF973090000-0x00007FF973B51000-memory.dmp

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memory/4880-94-0x000002A35F780000-0x000002A35F790000-memory.dmp

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