xworm | 8f26c490abbe3b76d42635347d83ffa6387888021d4909fcfd63e3dcc25540d2

General

Target

Output.exe
Size

98KB
MD5

d7557a4322101418a54b3ba0d973bdb1
SHA1

57ae796673ce3d7d32dc4490f5e331c643aa8228
SHA256

8f26c490abbe3b76d42635347d83ffa6387888021d4909fcfd63e3dcc25540d2
SHA512

d2118512333b3e72eb1fad020082468b6d67689e104fcb4a0bb455c4870b429eff119987ca87d697398572e022a38949f5d3b75c3fd4c6106057d84ff786d773
SSDEEP

1536:ijXg7n3OaMrKTV82jTj5I6Ws5SZYSx8fWL5uWQaIK0naap+/l8NXftTOqg:ijw7n+NKTZFPkZvT5uCIak+/l8lfE

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

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

Attributes

Install_directory
%AppData%
install_file
BloxstrapModded.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm
behavioral2/memory/4076-16-0x00000000008C0000-0x00000000008DA000-memory.dmp	family_xworm

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Output.exeXClient.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	Output.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

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 1 IoCs

Processes:

XClient.exe

pid process

4076 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.

Processes:

flow ioc

24 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

Processes:

Output.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000_Classes\Local Settings Output.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

3820 NOTEPAD.EXE

pid	process
4076	XClient.exe

flow	ioc
24	ip-api.com

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000_Classes\Local Settings	Output.exe

pid	process
3820	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid	process
624	powershell.exe
624	powershell.exe
624	powershell.exe
684	powershell.exe
684	powershell.exe
684	powershell.exe
2264	powershell.exe
2264	powershell.exe
2264	powershell.exe
4028	powershell.exe
4028	powershell.exe
4028	powershell.exe
4076	XClient.exe
4076	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4076	XClient.exe
Token: SeDebugPrivilege	624	powershell.exe
Token: SeDebugPrivilege	684	powershell.exe
Token: SeDebugPrivilege	2264	powershell.exe
Token: SeDebugPrivilege	4028	powershell.exe
Token: SeDebugPrivilege	4076	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

4076 XClient.exe

pid	process
4076	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Output.exeXClient.exe

description	pid	process	target process
PID 2844 wrote to memory of 4076	2844	Output.exe	XClient.exe
PID 2844 wrote to memory of 4076	2844	Output.exe	XClient.exe
PID 2844 wrote to memory of 3820	2844	Output.exe	NOTEPAD.EXE
PID 2844 wrote to memory of 3820	2844	Output.exe	NOTEPAD.EXE
PID 4076 wrote to memory of 624	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 624	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 684	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 684	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 2264	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 2264	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 4028	4076	XClient.exe	powershell.exe
PID 4076 wrote to memory of 4028	4076	XClient.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Output.exe
"C:\Users\Admin\AppData\Local\Temp\Output.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2844

C:\Users\Admin\AppData\Roaming\XClient.exe
"C:\Users\Admin\AppData\Roaming\XClient.exe"
2⤵
- 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:4076

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\XClient.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:624

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:684

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'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2264

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'BloxstrapModded.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4028

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt
2⤵
- Opens file in notepad (likely ransom note)
PID:3820

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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
35967cf5ed9a95ec4fe527dd96567a02

SHA1
6a7439c241a30ec540d5d204e02a4cbb2a464737

SHA256
4394552922777081d43fb523126cf176d5a676602a5435713320942034f6b3cf

SHA512
419b3c336a67ef964bc166d1267cea146ed5878f98304d6e39fb9a3c0394d75693810a9ddc101cdda5e3196ad7d603df01a3260705cf9ef7cf8d4b252df01f45

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
b51dc9e5ec3c97f72b4ca9488bbb4462

SHA1
5c1e8c0b728cd124edcacefb399bbd5e25b21bd3

SHA256
976f9534aa2976c85c2455bdde786a3f55d63aefdd40942eba1223c4c93590db

SHA512
0e5aa6cf64c535aefb833e5757b68e1094c87424abe2615a7d7d26b1b31eff358d12e36e75ca57fd690a9919b776600bf4c5c0e5a5df55366ba62238bdf3f280

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w3vni2qs.xk2.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\README.txt
Filesize
438B

MD5
659061a5689cae197b49f62be53bcf40

SHA1
6467f2252645e7ce87932aad37e24a6eed3fefeb

SHA256
0ca739b146beb166072cb199c8090f98140b88c5a7c251cf4ed730487507936c

SHA512
f5933100e6ce6a030cb7ee36213308cfa4b05859b903564c4d711e60433079dd8182922ea45f25ec8b8defca90c5aa56a94bce031e5aa0e35e11ae19fb858567

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
80KB

MD5
cfeb71480542c9b6d6aec88f02e6d820

SHA1
4fcf90f5f8e16dcee2fa5ee1611394533f7ff740

SHA256
ebabe3ead25f28d4fe0a3ab1a592d7160065995da465ec549ebe8f27ba5eeee9

SHA512
e5d1a95fe948e295f0f7cc55f88464136e088b0c7f531a132eab76025885f2de93d101981fc3dedc4bd7ed271b58578bcab235fc9d2bedca6e209fb3f7d594bd

Download Submit
memory/624-32-0x0000016BFA190000-0x0000016BFA1A0000-memory.dmp

Filesize
64KB

Download
memory/624-27-0x0000016BFA120000-0x0000016BFA142000-memory.dmp

Filesize
136KB

Download
memory/624-31-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/624-33-0x0000016BFA190000-0x0000016BFA1A0000-memory.dmp

Filesize
64KB

Download
memory/624-36-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/684-40-0x00000199603A0000-0x00000199603B0000-memory.dmp

Filesize
64KB

Download
memory/684-39-0x00000199603A0000-0x00000199603B0000-memory.dmp

Filesize
64KB

Download
memory/684-52-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/684-38-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/2264-54-0x000002B7C8350000-0x000002B7C8360000-memory.dmp

Filesize
64KB

Download
memory/2264-67-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/2264-53-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/2264-55-0x000002B7C8350000-0x000002B7C8360000-memory.dmp

Filesize
64KB

Download
memory/2844-2-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/2844-18-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/2844-0-0x0000000000EA0000-0x0000000000EBE000-memory.dmp

Filesize
120KB

Download
memory/4028-69-0x00000221F97F0000-0x00000221F9800000-memory.dmp

Filesize
64KB

Download
memory/4028-68-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/4028-81-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/4076-16-0x00000000008C0000-0x00000000008DA000-memory.dmp

Filesize
104KB

Download
memory/4076-20-0x0000000000E90000-0x0000000000EA0000-memory.dmp

Filesize
64KB

Download
memory/4076-17-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/4076-86-0x00007FFC37440000-0x00007FFC37F01000-memory.dmp

Filesize
10.8MB

Download
memory/4076-87-0x0000000000E90000-0x0000000000EA0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads