xworm | 9dc9b2e78ea2fb6b99b8366123315d73f6097abc59514a5456da61b4dbbe9ecc

General

Target

svchost.exe
Size

74KB
MD5

31fc055df1031a064f93fb32fedb1102
SHA1

bd7c77edba60504dd17085eb99f9486185a59925
SHA256

9dc9b2e78ea2fb6b99b8366123315d73f6097abc59514a5456da61b4dbbe9ecc
SHA512

baf46d849c32c2399d169e508a2fb5fd0e38c22ce0b3d85a1f62520dfd4335cbae5b42002d9a0b5f1b7e496a3cc7c02474eccd1a4475cafb3f55706cbe330daa
SSDEEP

1536:8LgUO5QAWo3oV0sZW3aE3i3kb4a7Saxu6hxOAKSc8f4Q:8LgfGcoVo33bbNnxLOLSc8gQ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:55299

road-stars.gl.at.ply.gg:55299

Attributes

Install_directory
%Userprofile%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2276-1-0x0000000000190000-0x00000000001A8000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023c93-58.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
4072	powershell.exe
4576	powershell.exe
3836	powershell.exe
1528	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	svchost.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3600	svchost.exe
5100	svchost.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\svchost.exe"	svchost.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
13	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
3348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4072	powershell.exe
4072	powershell.exe
4576	powershell.exe
4576	powershell.exe
3836	powershell.exe
3836	powershell.exe
1528	powershell.exe
1528	powershell.exe
2276	svchost.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2276	svchost.exe
Token: SeDebugPrivilege	4072	powershell.exe
Token: SeDebugPrivilege	4576	powershell.exe
Token: SeDebugPrivilege	3836	powershell.exe
Token: SeDebugPrivilege	1528	powershell.exe
Token: SeDebugPrivilege	2276	svchost.exe
Token: SeDebugPrivilege	3600	svchost.exe
Token: SeDebugPrivilege	5100	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2276	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 4072	2276	svchost.exe	89
PID 2276 wrote to memory of 4072	2276	svchost.exe	89
PID 2276 wrote to memory of 4576	2276	svchost.exe	93
PID 2276 wrote to memory of 4576	2276	svchost.exe	93
PID 2276 wrote to memory of 3836	2276	svchost.exe	95
PID 2276 wrote to memory of 3836	2276	svchost.exe	95
PID 2276 wrote to memory of 1528	2276	svchost.exe	97
PID 2276 wrote to memory of 1528	2276	svchost.exe	97
PID 2276 wrote to memory of 3348	2276	svchost.exe	99
PID 2276 wrote to memory of 3348	2276	svchost.exe	99

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\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.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:2276
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4072
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4576
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3836
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1528
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3348

C:\Users\Admin\svchost.exe
C:\Users\Admin\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3600

C:\Users\Admin\svchost.exe
C:\Users\Admin\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5100

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

Exfiltration

Impact

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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\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
10890cda4b6eab618e926c4118ab0647

SHA1
1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

SHA256
00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

SHA512
a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

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

Filesize
944B

MD5
dd1d0b083fedf44b482a028fb70b96e8

SHA1
dc9c027937c9f6d52268a1504cbae42a39c8d36a

SHA256
cab7944d29e0501dc0db904ac460ca7a87700e0ec7eb62298b7b97cbf40c424c

SHA512
96bec38bfda176292ae65dcf735103e7888baa212038737c1d1e215fcb76e4c0355e4a827a1934303e7aecae91012fa412f13e38f382b732758bae985cc67973

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pdlnfmyc.5tn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\svchost.exe

Filesize
74KB

MD5
31fc055df1031a064f93fb32fedb1102

SHA1
bd7c77edba60504dd17085eb99f9486185a59925

SHA256
9dc9b2e78ea2fb6b99b8366123315d73f6097abc59514a5456da61b4dbbe9ecc

SHA512
baf46d849c32c2399d169e508a2fb5fd0e38c22ce0b3d85a1f62520dfd4335cbae5b42002d9a0b5f1b7e496a3cc7c02474eccd1a4475cafb3f55706cbe330daa

Download Submit
memory/2276-0-0x00007FF9D9B23000-0x00007FF9D9B25000-memory.dmp

Filesize
8KB

Download
memory/2276-56-0x00007FF9D9B23000-0x00007FF9D9B25000-memory.dmp

Filesize
8KB

Download
memory/2276-1-0x0000000000190000-0x00000000001A8000-memory.dmp

Filesize
96KB

Download
memory/4072-14-0x00007FF9D9B20000-0x00007FF9DA5E1000-memory.dmp

Filesize
10.8MB

Download
memory/4072-17-0x00007FF9D9B20000-0x00007FF9DA5E1000-memory.dmp

Filesize
10.8MB

Download
memory/4072-13-0x00007FF9D9B20000-0x00007FF9DA5E1000-memory.dmp

Filesize
10.8MB

Download
memory/4072-12-0x00007FF9D9B20000-0x00007FF9DA5E1000-memory.dmp

Filesize
10.8MB

Download
memory/4072-2-0x00000263CA500000-0x00000263CA522000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads