xworm | f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4

General

Target

f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
Size

366KB
MD5

4f5692a403b1b3dd667c76ce1f11d880
SHA1

383940ce84f31672f1ce3e029a2a62f8c4fd71df
SHA256

f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4
SHA512

f0a1af04232e625800973b2b9f83d8273fffb7abda790007fef58b2e1a644a530a30df0bea2e66714ba7512f930a3e8b2af21b03119e783d563edcb22691b248
SSDEEP

6144:RCiEZuBipI7bg0f+UNozkuxatmxY4YihFOwoXrQnY9:kde7My2ogiXE

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Mutex

0LLXgeoJ4l4QFpG6

Attributes

install_file
USBDriver.exe
pastebin_url
https://pastebin.com/raw/FrUYqTuA

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2348-25-0x0000000000F60000-0x0000000000F74000-memory.dmp	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
2680	powershell.exe
2288	powershell.exe
536	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
2604	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
1192	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
6	pastebin.com
7	pastebin.com
8	4.tcp.eu.ngrok.io
23	4.tcp.eu.ngrok.io
30	4.tcp.eu.ngrok.io

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 0400000001000000100000000cd2f9e0da1773e9ed864da5e370e74e14000000010000001400000079b459e67bb6e5e40173800888c81a58f6e99b6e030000000100000014000000cabd2a79a1076a31f21d253635cb039d4329a5e80f00000001000000200000003f0411ede9c4477057d57e57883b1f205b20cdc0f3263129b1ee0269a2678f631900000001000000100000002fe1f70bb05d7c92335bc5e05b984da620000000010000006f0500003082056b30820353a0030201020211008210cfb0d240e3594463e0bb63828b00300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3135303630343131303433385a170d3335303630343131303433385a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f7420583130820222300d06092a864886f70d01010105000382020f003082020a0282020100ade82473f41437f39b9e2b57281c87bedcb7df38908c6e3ce657a078f775c2a2fef56a6ef6004f28dbde68866c4493b6b163fd14126bbf1fd2ea319b217ed1333cba48f5dd79dfb3b8ff12f1219a4bc18a8671694a66666c8f7e3c70bfad292206f3e4c0e680aee24b8fb7997e94039fd347977c99482353e838ae4f0a6f832ed149578c8074b6da2fd0388d7b0370211b75f2303cfa8faeddda63abeb164fc28e114b7ecf0be8ffb5772ef4b27b4ae04c12250c708d0329a0e15324ec13d9ee19bf10b34a8c3f89a36151deac870794f46371ec2ee26f5b9881e1895c34796c76ef3b906279e6dba49a2f26c5d010e10eded9108e16fbb7f7a8f7c7e50207988f360895e7e237960d36759efb0e72b11d9bbc03f94905d881dd05b42ad641e9ac0176950a0fd8dfd5bd121f352f28176cd298c1a80964776e4737baceac595e689d7f72d689c50641293e593edd26f524c911a75aa34c401f46a199b5a73a516e863b9e7d72a712057859ed3e5178150b038f8dd02f05b23e7b4a1c4b730512fcc6eae050137c439374b3ca74e78e1f0108d030d45b7136b407bac130305c48b7823b98a67d608aa2a32982ccbabd83041ba2830341a1d605f11bc2b6f0a87c863b46a8482a88dc769a76bf1f6aa53d198feb38f364dec82b0d0a28fff7dbe21542d422d0275de179fe18e77088ad4ee6d98b3ac6dd27516effbc64f533434f0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e0416041479b459e67bb6e5e40173800888c81a58f6e99b6e300d06092a864886f70d01010b05000382020100551f58a9bcb2a850d00cb1d81a6920272908ac61755c8a6ef882e5692fd5f6564bb9b8731059d321977ee74c71fbb2d260ad39a80bea17215685f1500e59ebcee059e9bac915ef869d8f8480f6e4e99190dc179b621b45f06695d27c6fc2ea3bef1fcfcbd6ae27f1a9b0c8aefd7d7e9afa2204ebffd97fea912b22b1170e8ff28a345b58d8fc01c954b9b826cc8a8833894c2d843c82dfee965705ba2cbbf7c4b7c74e3b82be31c822737392d1c280a43939103323824c3c9f86b255981dbe29868c229b9ee26b3b573a82704ddc09c789cb0a074d6ce85d8ec9efceabc7bbb52b4e45d64ad026cce572ca086aa595e315a1f7a4edc92c5fa5fbffac28022ebed77bbbe3717b9016d3075e46537c3707428cd3c4969cd599b52ae0951a8048ae4c3907cecc47a452952bbab8fbadd233537de51d4d6dd5a1b1c7426fe64027355ca328b7078de78d3390e7239ffb509c796c46d5b415b3966e7e9b0c963ab8522d3fd65be1fb08c284fe24a8a389daac6ae1182ab1a843615bd31fdc3b8d76f22de88d75df17336c3d53fb7bcb415fffdca2d06138e196b8ac5d8b37d775d533c09911ae9d41c1727584be0241425f67244894d19b27be073fb9b84f817451e17ab7ed9d23e2bee0d52804133c31039edd7a6c8fc60718c67fde478e3f289e0406cfa5543477bdec899be91743df5bdb5ffe8e1e57a2cd409d7e6222dade1827	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe

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
2856	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2288	powershell.exe
536	powershell.exe
2680	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
Token: SeDebugPrivilege	2288	powershell.exe
Token: SeDebugPrivilege	536	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2604	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
Token: SeDebugPrivilege	1192	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2288	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	30
PID 2348 wrote to memory of 2288	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	30
PID 2348 wrote to memory of 2288	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	30
PID 2348 wrote to memory of 536	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	32
PID 2348 wrote to memory of 536	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	32
PID 2348 wrote to memory of 536	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	32
PID 2348 wrote to memory of 2680	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	34
PID 2348 wrote to memory of 2680	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	34
PID 2348 wrote to memory of 2680	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	34
PID 2348 wrote to memory of 2856	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	37
PID 2348 wrote to memory of 2856	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	37
PID 2348 wrote to memory of 2856	2348	f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe	37
PID 684 wrote to memory of 2604	684	taskeng.exe	40
PID 684 wrote to memory of 2604	684	taskeng.exe	40
PID 684 wrote to memory of 2604	684	taskeng.exe	40
PID 684 wrote to memory of 1192	684	taskeng.exe	41
PID 684 wrote to memory of 1192	684	taskeng.exe	41
PID 684 wrote to memory of 1192	684	taskeng.exe	41

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\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
"C:\Users\Admin\AppData\Local\Temp\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe"
1⤵
- Modifies system certificate store
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2288
- 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\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:536
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /rl highest /tn "f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N" /tr "C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2856

C:\Windows\system32\taskeng.exe
taskeng.exe {35ACD136-042B-42E1-A5BE-374355A3F307} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:684
- C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
  C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2604
- C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
  C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1192

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4N.exe

Filesize
366KB

MD5
4f5692a403b1b3dd667c76ce1f11d880

SHA1
383940ce84f31672f1ce3e029a2a62f8c4fd71df

SHA256
f1db2121b89f530bd74ed44c8a14e2ee3734db74fbb722f16c9f2466fb6e23c4

SHA512
f0a1af04232e625800973b2b9f83d8273fffb7abda790007fef58b2e1a644a530a30df0bea2e66714ba7512f930a3e8b2af21b03119e783d563edcb22691b248

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
6b388924f45531deccf4079f5b8b8730

SHA1
65bccdcd8d144252cba076202d2758c3cf254f96

SHA256
b385370a8175bd51a7fe9d961ebec218920e0b61b27b4d46e5f27e49e02b41a6

SHA512
561d77390f41c6cabdb42c3152f69d3a739c47d7545e956d67fe224dde6bbb362fa7f2bf08db9499e1300437902dc13120a948756277598eeed38d3902a8e715

Download Submit
memory/536-16-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download
memory/536-15-0x000000001B560000-0x000000001B842000-memory.dmp

Filesize
2.9MB

Download
memory/1192-33-0x0000000001180000-0x00000000011E2000-memory.dmp

Filesize
392KB

Download
memory/2288-9-0x00000000023C0000-0x0000000002440000-memory.dmp

Filesize
512KB

Download
memory/2288-7-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/2288-6-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2348-8-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2348-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2348-24-0x0000000000EC0000-0x0000000000F1C000-memory.dmp

Filesize
368KB

Download
memory/2348-25-0x0000000000F60000-0x0000000000F74000-memory.dmp

Filesize
80KB

Download
memory/2348-26-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2348-27-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2348-1-0x00000000013D0000-0x0000000001432000-memory.dmp

Filesize
392KB

Download
memory/2604-31-0x0000000000D10000-0x0000000000D72000-memory.dmp

Filesize
392KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads