xworm | 6e552c8d82a2553ec83fea57d340561834aeac22ae30d6a81692f2eee6651e14

General

Target

map.exe
Size

61KB
MD5

427cae9ddc40f9a7ea51459fc265d9be
SHA1

8c68b6be3529637908878e64a020dd99c3bf98ad
SHA256

4a1a9976a6fc9351ce34db0c601952328f52b526894cea614b51879c065e89a4
SHA512

da5d985814986580a53712df240dad2dd876a16aeebab7e89ddc9968a8d2305dbf1cb695e1fa812ac534f27f1dfabf1be8aedac1f07d1b311163843f905a47a1
SSDEEP

1536:SAXBcwCcPCxLgk2BeVbcqbhc48Ulk36nJNOOKLj:SAyvcPCaJe9Pbhc0hcOKLj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

submit-processing.gl.at.ply.gg:54034

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/memory/2836-1-0x0000000000D40000-0x0000000000D56000-memory.dmp	family_xworm
behavioral4/files/0x000700000002368b-59.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
1944	powershell.exe
3952	powershell.exe
3612	powershell.exe
3840	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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	map.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
5060	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-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	map.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
24	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
1164	schtasks.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1944	powershell.exe
1944	powershell.exe
1944	powershell.exe
3952	powershell.exe
3952	powershell.exe
3952	powershell.exe
3612	powershell.exe
3612	powershell.exe
3612	powershell.exe
3840	powershell.exe
3840	powershell.exe
3840	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2836	map.exe
Token: SeDebugPrivilege	1944	powershell.exe
Token: SeDebugPrivilege	3952	powershell.exe
Token: SeDebugPrivilege	3612	powershell.exe
Token: SeDebugPrivilege	3840	powershell.exe
Token: SeDebugPrivilege	2836	map.exe
Token: SeDebugPrivilege	5060	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 1944	2836	map.exe	97
PID 2836 wrote to memory of 1944	2836	map.exe	97
PID 2836 wrote to memory of 3952	2836	map.exe	101
PID 2836 wrote to memory of 3952	2836	map.exe	101
PID 2836 wrote to memory of 3612	2836	map.exe	103
PID 2836 wrote to memory of 3612	2836	map.exe	103
PID 2836 wrote to memory of 3840	2836	map.exe	105
PID 2836 wrote to memory of 3840	2836	map.exe	105
PID 2836 wrote to memory of 1164	2836	map.exe	109
PID 2836 wrote to memory of 1164	2836	map.exe	109

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\map.exe
"C:\Users\Admin\AppData\Local\Temp\map.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2836
- 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\map.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1944
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'map.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3952
- 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:3612
- 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:3840
- 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:1164

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4532,i,1236064252342462940,13180713657498721890,262144 --variations-seed-version --mojo-platform-channel-handle=2808 /prefetch:8
1⤵
PID:2448

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5060

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
bd5940f08d0be56e65e5f2aaf47c538e

SHA1
d7e31b87866e5e383ab5499da64aba50f03e8443

SHA256
2d2f364c75bd2897504249f42cdf1d19374f5230aad68fa9154ea3d03e3031a6

SHA512
c34d10c7e07da44a180fae9889b61f08903aa84e8ddfa80c31c272b1ef9d491b8cec6b8a4c836c3cb1583fe8f4955c6a8db872515de3a9e10eae09610c959406

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

Filesize
944B

MD5
17e45724e81fad9d4f4eda74fe6b349e

SHA1
0ef309ee5638e1055c0f0fe7cd693a5643a1e4a3

SHA256
444084a5dd84f5aeaa084a27da160ea4501574fbb27da9d7aab3c6c5b3269eb6

SHA512
c1b0dd77c2ae9c15843b3bac8de6874609ebeffa5e10e552b364340c51bde690ac563c132dbc14f93e68d3a7939ea840fa687eb1bd603d646acf88a3430b6e45

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

Filesize
944B

MD5
b032e32a44e081143e7244b530eeb3ac

SHA1
35e07aae8d050edca750cf5bdfdff875eb8d94ad

SHA256
5b67cf687b27afc743c53b98658fc43622adcededf7ed24d05c755cff2126d3e

SHA512
ba4bf2aefac91cf66735887487b8463b245fecc23845c1384469cea5550d7970ad4fde0edc1b02d085aecb1fefc1cb072d401dcc0c7e1641db1ec93162f13b18

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qauzpcn0.o33.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
61KB

MD5
427cae9ddc40f9a7ea51459fc265d9be

SHA1
8c68b6be3529637908878e64a020dd99c3bf98ad

SHA256
4a1a9976a6fc9351ce34db0c601952328f52b526894cea614b51879c065e89a4

SHA512
da5d985814986580a53712df240dad2dd876a16aeebab7e89ddc9968a8d2305dbf1cb695e1fa812ac534f27f1dfabf1be8aedac1f07d1b311163843f905a47a1

Download Submit
memory/1944-14-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download
memory/1944-15-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download
memory/1944-13-0x0000022C7F680000-0x0000022C7F6A2000-memory.dmp

Filesize
136KB

Download
memory/1944-18-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download
memory/1944-3-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download
memory/2836-0-0x00007FF8F10D3000-0x00007FF8F10D5000-memory.dmp

Filesize
8KB

Download
memory/2836-2-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download
memory/2836-1-0x0000000000D40000-0x0000000000D56000-memory.dmp

Filesize
88KB

Download
memory/2836-57-0x00007FF8F10D3000-0x00007FF8F10D5000-memory.dmp

Filesize
8KB

Download
memory/2836-58-0x00007FF8F10D0000-0x00007FF8F1B91000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads