xworm | de5f9d738a8be7790dd3f03e6ed537e40ffe83fe7a368826dc4ad6106b63a929

General

Target

c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
Size

77KB
MD5

a307d64f791cb555d029c214364162d8
SHA1

04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74
SHA256

c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454
SHA512

d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e
SSDEEP

1536:x5sFO8g/9VM5dQ+aomobhr3KXg6wzOB1SmOnU7Ua+G:x5sU9Vv4bbhr6SOB1S5nU7MG

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

left-noon.gl.at.ply.gg:60705

Attributes

Install_directory
%AppData%
install_file
US11B.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1656-1-0x0000000000CE0000-0x0000000000CFA000-memory.dmp	family_xworm
behavioral1/files/0x000a000000003cf2-29.dat	family_xworm
behavioral1/memory/1896-36-0x0000000001120000-0x000000000113A000-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
2436	powershell.exe
2816	powershell.exe
2528	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.lnk	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.lnk	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

Executes dropped EXE 2 IoCs

pid	Process
1896	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
2100	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454 = "C:\\Users\\Admin\\AppData\\Roaming\\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe"	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.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
4	ip-api.com

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	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 0400000001000000100000000cd2f9e0da1773e9ed864da5e370e74e14000000010000001400000079b459e67bb6e5e40173800888c81a58f6e99b6e030000000100000014000000cabd2a79a1076a31f21d253635cb039d4329a5e80f00000001000000200000003f0411ede9c4477057d57e57883b1f205b20cdc0f3263129b1ee0269a2678f631900000001000000100000002fe1f70bb05d7c92335bc5e05b984da620000000010000006f0500003082056b30820353a0030201020211008210cfb0d240e3594463e0bb63828b00300d06092a864886f70d01010b0500304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f74205831301e170d3135303630343131303433385a170d3335303630343131303433385a304f310b300906035504061302555331293027060355040a1320496e7465726e65742053656375726974792052657365617263682047726f7570311530130603550403130c4953524720526f6f7420583130820222300d06092a864886f70d01010105000382020f003082020a0282020100ade82473f41437f39b9e2b57281c87bedcb7df38908c6e3ce657a078f775c2a2fef56a6ef6004f28dbde68866c4493b6b163fd14126bbf1fd2ea319b217ed1333cba48f5dd79dfb3b8ff12f1219a4bc18a8671694a66666c8f7e3c70bfad292206f3e4c0e680aee24b8fb7997e94039fd347977c99482353e838ae4f0a6f832ed149578c8074b6da2fd0388d7b0370211b75f2303cfa8faeddda63abeb164fc28e114b7ecf0be8ffb5772ef4b27b4ae04c12250c708d0329a0e15324ec13d9ee19bf10b34a8c3f89a36151deac870794f46371ec2ee26f5b9881e1895c34796c76ef3b906279e6dba49a2f26c5d010e10eded9108e16fbb7f7a8f7c7e50207988f360895e7e237960d36759efb0e72b11d9bbc03f94905d881dd05b42ad641e9ac0176950a0fd8dfd5bd121f352f28176cd298c1a80964776e4737baceac595e689d7f72d689c50641293e593edd26f524c911a75aa34c401f46a199b5a73a516e863b9e7d72a712057859ed3e5178150b038f8dd02f05b23e7b4a1c4b730512fcc6eae050137c439374b3ca74e78e1f0108d030d45b7136b407bac130305c48b7823b98a67d608aa2a32982ccbabd83041ba2830341a1d605f11bc2b6f0a87c863b46a8482a88dc769a76bf1f6aa53d198feb38f364dec82b0d0a28fff7dbe21542d422d0275de179fe18e77088ad4ee6d98b3ac6dd27516effbc64f533434f0203010001a3423040300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff301d0603551d0e0416041479b459e67bb6e5e40173800888c81a58f6e99b6e300d06092a864886f70d01010b05000382020100551f58a9bcb2a850d00cb1d81a6920272908ac61755c8a6ef882e5692fd5f6564bb9b8731059d321977ee74c71fbb2d260ad39a80bea17215685f1500e59ebcee059e9bac915ef869d8f8480f6e4e99190dc179b621b45f06695d27c6fc2ea3bef1fcfcbd6ae27f1a9b0c8aefd7d7e9afa2204ebffd97fea912b22b1170e8ff28a345b58d8fc01c954b9b826cc8a8833894c2d843c82dfee965705ba2cbbf7c4b7c74e3b82be31c822737392d1c280a43939103323824c3c9f86b255981dbe29868c229b9ee26b3b573a82704ddc09c789cb0a074d6ce85d8ec9efceabc7bbb52b4e45d64ad026cce572ca086aa595e315a1f7a4edc92c5fa5fbffac28022ebed77bbbe3717b9016d3075e46537c3707428cd3c4969cd599b52ae0951a8048ae4c3907cecc47a452952bbab8fbadd233537de51d4d6dd5a1b1c7426fe64027355ca328b7078de78d3390e7239ffb509c796c46d5b415b3966e7e9b0c963ab8522d3fd65be1fb08c284fe24a8a389daac6ae1182ab1a843615bd31fdc3b8d76f22de88d75df17336c3d53fb7bcb415fffdca2d06138e196b8ac5d8b37d775d533c09911ae9d41c1727584be0241425f67244894d19b27be073fb9b84f817451e17ab7ed9d23e2bee0d52804133c31039edd7a6c8fc60718c67fde478e3f289e0406cfa5543477bdec899be91743df5bdb5ffe8e1e57a2cd409d7e6222dade1827	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.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
2688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2436	powershell.exe
2816	powershell.exe
2528	powershell.exe
1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
Token: SeDebugPrivilege	2436	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeDebugPrivilege	2528	powershell.exe
Token: SeDebugPrivilege	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
Token: SeDebugPrivilege	1896	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
Token: SeDebugPrivilege	2100	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2436	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	29
PID 1656 wrote to memory of 2436	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	29
PID 1656 wrote to memory of 2436	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	29
PID 1656 wrote to memory of 2816	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	31
PID 1656 wrote to memory of 2816	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	31
PID 1656 wrote to memory of 2816	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	31
PID 1656 wrote to memory of 2528	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	33
PID 1656 wrote to memory of 2528	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	33
PID 1656 wrote to memory of 2528	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	33
PID 1656 wrote to memory of 2688	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	35
PID 1656 wrote to memory of 2688	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	35
PID 1656 wrote to memory of 2688	1656	c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe	35
PID 1668 wrote to memory of 1896	1668	taskeng.exe	40
PID 1668 wrote to memory of 1896	1668	taskeng.exe	40
PID 1668 wrote to memory of 1896	1668	taskeng.exe	40
PID 1668 wrote to memory of 2100	1668	taskeng.exe	41
PID 1668 wrote to memory of 2100	1668	taskeng.exe	41
PID 1668 wrote to memory of 2100	1668	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\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
"C:\Users\Admin\AppData\Local\Temp\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1656
- 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\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2816
- 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\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2528
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454" /tr "C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2688

C:\Windows\system32\taskeng.exe
taskeng.exe {EA8AB36E-4F92-4DBC-9212-9F7BBF1B378D} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1668
- C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
  C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1896
- C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
  C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2100

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

2

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

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
593c35d4280cbaa5c46053f0ffbd389c

SHA1
f7909ec0e79b4251cdb02488031f27f5df026b35

SHA256
288e28a63c98ca5ad63404b02bd801f81d88cf9009368d31ccdd7c53a2b6a8f9

SHA512
b4520ebcf818c96a7ce8930da81fc182b69f916186b988a0d9859152df67df080a9fefa764f20b03791e4bc34204796cfb93b271b49aecc7a3498c05803b9c24

Download Submit
C:\Users\Admin\AppData\Roaming\c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454.exe

Filesize
77KB

MD5
a307d64f791cb555d029c214364162d8

SHA1
04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74

SHA256
c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454

SHA512
d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e

Download Submit
memory/1656-2-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/1656-0-0x000007FEF5E13000-0x000007FEF5E14000-memory.dmp

Filesize
4KB

Download
memory/1656-1-0x0000000000CE0000-0x0000000000CFA000-memory.dmp

Filesize
104KB

Download
memory/1656-31-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/1896-36-0x0000000001120000-0x000000000113A000-memory.dmp

Filesize
104KB

Download
memory/2436-7-0x00000000027C0000-0x0000000002840000-memory.dmp

Filesize
512KB

Download
memory/2436-8-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2436-9-0x0000000002790000-0x0000000002798000-memory.dmp

Filesize
32KB

Download
memory/2816-15-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2816-16-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads