xworm | be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d

General

Target

be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Size

77KB
MD5

5e8a5156dbc7d49253c816d51b6db041
SHA1

0af49260496487b42325309b0748ed9657649d03
SHA256

be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d
SHA512

96d70896c34ca88e9cdf315c93bb2fb10195f663331e2f74ded08bf3aff5c7ba176bda8aa5193f62aa251fa262d59c8e70a7de4b1d97ac130c5a6461278901cc
SSDEEP

1536:x5sFO8g/9VM5dQ+aomobhr3KXg6wzOB1SmOnU7Ua+GD:x5sU9Vv4bbhr6SOB1S5nU7MGD

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 2 IoCs

resource	yara_rule
behavioral2/memory/1112-1-0x0000000000C30000-0x0000000000C4A000-memory.dmp	family_xworm
behavioral2/files/0x0014000000023aa3-48.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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3984	powershell.exe
3708	powershell.exe
940	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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.lnk	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.lnk	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Executes dropped EXE 2 IoCs

pid	Process
4516	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
4704	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d = "C:\\Users\\Admin\\AppData\\Roaming\\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe"	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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
3064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3984	powershell.exe
3984	powershell.exe
3708	powershell.exe
3708	powershell.exe
940	powershell.exe
940	powershell.exe
1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	3984	powershell.exe
Token: SeDebugPrivilege	3708	powershell.exe
Token: SeDebugPrivilege	940	powershell.exe
Token: SeDebugPrivilege	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	4516	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
Token: SeDebugPrivilege	4704	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 3984	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	92
PID 1112 wrote to memory of 3984	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	92
PID 1112 wrote to memory of 3708	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	95
PID 1112 wrote to memory of 3708	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	95
PID 1112 wrote to memory of 940	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	97
PID 1112 wrote to memory of 940	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	97
PID 1112 wrote to memory of 3064	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe	99
PID 1112 wrote to memory of 3064	1112	be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
"C:\Users\Admin\AppData\Local\Temp\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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:1112
- 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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3984
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3708
- 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\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:940
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d" /tr "C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3064

C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4516

C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4704

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
944B

MD5
be67063c62a242565760a02a642a9f02

SHA1
d1043a892b44d6676f71b568f578fff947266a19

SHA256
56f158298dc5f781d6636a0b15d040f9cffb1d46cd11079aa40a26b662217f48

SHA512
90d2cbd882ff8043412ad25e74df0cf6b71d6f3fbdfa6f1efa0efc8eed86a925606c7d2e967f112a34d3f0e04f01a396898508571400dcf7e6fd69e78f406638

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vgm45zmw.vt5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d.exe

Filesize
77KB

MD5
5e8a5156dbc7d49253c816d51b6db041

SHA1
0af49260496487b42325309b0748ed9657649d03

SHA256
be3bbb60ddff2195d79756f8bc744a8e6e3fb630c6aad02cff85a4cc681e4a6d

SHA512
96d70896c34ca88e9cdf315c93bb2fb10195f663331e2f74ded08bf3aff5c7ba176bda8aa5193f62aa251fa262d59c8e70a7de4b1d97ac130c5a6461278901cc

Download Submit
memory/1112-1-0x0000000000C30000-0x0000000000C4A000-memory.dmp

Filesize
104KB

Download
memory/1112-2-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download
memory/1112-0-0x00007FFB5E6D3000-0x00007FFB5E6D5000-memory.dmp

Filesize
8KB

Download
memory/1112-50-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download
memory/3984-3-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download
memory/3984-18-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download
memory/3984-15-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download
memory/3984-14-0x000001D9FBBC0000-0x000001D9FBBE2000-memory.dmp

Filesize
136KB

Download
memory/3984-4-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads