xworm | 011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a

General

Target

011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe
Size

85KB
MD5

5636cc262a1ea73f360534991aa1583d
SHA1

217f76c8ba5f9ed4e3ce437a7998c9892ec5740c
SHA256

011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a
SHA512

6d0004c9706a92f7777034d4d108a2eba8d1864468f71b03da319842bba9d0611b9fad53502d03b3bddf6b8ebecee70912c954db94a1fe581d29c49069adfc35
SSDEEP

1536:1nP61US1NLpoocGqsd+eC/b4ukt6L4QbHCaE6VOfBOrvSxnb1M+dXS:NP1elOoch2+xbhkpQbHPOJO7ObmqS

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/Hzb9qrsF

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4544-1-0x00000000009D0000-0x00000000009EC000-memory.dmp	family_xworm
behavioral2/files/0x0037000000023b76-60.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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2568	powershell.exe
1392	powershell.exe
1848	powershell.exe
2056	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe

Executes dropped EXE 2 IoCs

pid	Process
1824	XClient.exe
1744	XClient.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
20	pastebin.com
21	pastebin.com

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
16	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
3828	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1848	powershell.exe
1848	powershell.exe
2056	powershell.exe
2056	powershell.exe
2568	powershell.exe
2568	powershell.exe
1392	powershell.exe
1392	powershell.exe
4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe
Token: SeDebugPrivilege	1848	powershell.exe
Token: SeDebugPrivilege	2056	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	1392	powershell.exe
Token: SeDebugPrivilege	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe
Token: SeDebugPrivilege	1824	XClient.exe
Token: SeDebugPrivilege	1744	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 1848	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	92
PID 4544 wrote to memory of 1848	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	92
PID 4544 wrote to memory of 2056	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	96
PID 4544 wrote to memory of 2056	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	96
PID 4544 wrote to memory of 2568	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	98
PID 4544 wrote to memory of 2568	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	98
PID 4544 wrote to memory of 1392	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	100
PID 4544 wrote to memory of 1392	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	100
PID 4544 wrote to memory of 3828	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	104
PID 4544 wrote to memory of 3828	4544	011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe	104

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\011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe
"C:\Users\Admin\AppData\Local\Temp\011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.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:4544
- 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\011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1848
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2056
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1392
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3828

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1824

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

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\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
9bc110200117a3752313ca2acaf8a9e1

SHA1
fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

SHA256
c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

SHA512
1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

Filesize
944B

MD5
02d34be5b77db6b4cd97ade7f02c3290

SHA1
4f869af34725462b27e793434508ee6fdc669317

SHA256
46e350ea46a1bc381efafb54e7f23e62a616f5989e4deb43662b388c2b885817

SHA512
f5b0b4ab7ebabaf00309ff65cdaaab792c00283bd1f710930eb6120c34c936d5c434f40a33acec1f14810f166da41e7690bdeeac9e22f14672918c39f7a61580

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mkhakmha.12q.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
85KB

MD5
5636cc262a1ea73f360534991aa1583d

SHA1
217f76c8ba5f9ed4e3ce437a7998c9892ec5740c

SHA256
011753470736e81b7f8d17e0a9739f61f2fabd3211ae36584d2d57bbb3ea596a

SHA512
6d0004c9706a92f7777034d4d108a2eba8d1864468f71b03da319842bba9d0611b9fad53502d03b3bddf6b8ebecee70912c954db94a1fe581d29c49069adfc35

Download Submit
memory/1848-16-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/1848-19-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/1848-6-0x000001C64DA40000-0x000001C64DA62000-memory.dmp

Filesize
136KB

Download
memory/1848-5-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/1848-4-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/1848-3-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/4544-0-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/4544-41-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/4544-59-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/4544-2-0x00007FF978A10000-0x00007FF978C05000-memory.dmp

Filesize
2.0MB

Download
memory/4544-1-0x00000000009D0000-0x00000000009EC000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads