xworm | 63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3

General

Target

63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe
Size

73KB
MD5

700e9ea332a1cf4f0a67e52acc939b30
SHA1

d2a0424f642535ca98f78fc1a4705f0f80fe417d
SHA256

63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3
SHA512

64ef2328da0d6e2f9a49d6e2cad24957d4e8a1da29629665d32444e90111c49714e61f27ee78a2c37a74255af065b2daec3065047801a0da0db1b7ef64b3868d
SSDEEP

1536:at1xRmYXr9E5v9mt8pt3h9Ibm6Yk9Fc7RCa6e0OKcVBSKgcyy:at1xRmYXwf7Ibdw1CNOPSzpy

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

rating-action.gl.at.ply.gg::8848

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4700-1-0x0000000000660000-0x0000000000678000-memory.dmp	family_xworm
behavioral2/files/0x0008000000023cac-59.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
2248	powershell.exe
3936	powershell.exe
3724	powershell.exe
2860	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.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
15	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
3760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2860	powershell.exe
2860	powershell.exe
2248	powershell.exe
2248	powershell.exe
3936	powershell.exe
3936	powershell.exe
3724	powershell.exe
3724	powershell.exe
4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2248	powershell.exe
Token: SeDebugPrivilege	3936	powershell.exe
Token: SeDebugPrivilege	3724	powershell.exe
Token: SeDebugPrivilege	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe
Token: SeDebugPrivilege	3620	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 2860	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	91
PID 4700 wrote to memory of 2860	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	91
PID 4700 wrote to memory of 2248	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	93
PID 4700 wrote to memory of 2248	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	93
PID 4700 wrote to memory of 3936	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	96
PID 4700 wrote to memory of 3936	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	96
PID 4700 wrote to memory of 3724	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	98
PID 4700 wrote to memory of 3724	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	98
PID 4700 wrote to memory of 3760	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	102
PID 4700 wrote to memory of 3760	4700	63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe	102

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\63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe
"C:\Users\Admin\AppData\Local\Temp\63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.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:4700
- 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\63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2248
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3936
- 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:3724
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3760

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3620

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
6c47b3f4e68eebd47e9332eebfd2dd4e

SHA1
67f0b143336d7db7b281ed3de5e877fa87261834

SHA256
8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c

SHA512
0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

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

Filesize
944B

MD5
c47614abb4a27f52f3f60f843ebd8d92

SHA1
dd62407b3ed157ac1be534127d79efa06c74647a

SHA256
4dc8c5d7c6ae54d2fd831689b3b389e28b7e0c0804215b440f83c0694b388055

SHA512
1164843b9a1eea714fc328dbe295c381865d24f7270c391e3086aad6952b579cffa55bbdb4bc65824f98375d686ef00b1dba7ce2b8b84cd966633099a326f592

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

Filesize
944B

MD5
51cf8df21f531e31f7740b4ec487a48a

SHA1
40c6a73b22d71625a62df109aefc92a5f9b9d13e

SHA256
263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d

SHA512
57a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3q51uhir.y3k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
73KB

MD5
700e9ea332a1cf4f0a67e52acc939b30

SHA1
d2a0424f642535ca98f78fc1a4705f0f80fe417d

SHA256
63b9cf6d9d8a95c21e0852f83e2dc2f2e8f972909b277b5692c3bfeae992ead3

SHA512
64ef2328da0d6e2f9a49d6e2cad24957d4e8a1da29629665d32444e90111c49714e61f27ee78a2c37a74255af065b2daec3065047801a0da0db1b7ef64b3868d

Download Submit
memory/2860-3-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/2860-15-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/2860-18-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/2860-14-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/2860-10-0x0000024261230000-0x0000024261252000-memory.dmp

Filesize
136KB

Download
memory/4700-0-0x00007FFA105F3000-0x00007FFA105F5000-memory.dmp

Filesize
8KB

Download
memory/4700-2-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-54-0x00007FFA105F0000-0x00007FFA110B1000-memory.dmp

Filesize
10.8MB

Download
memory/4700-1-0x0000000000660000-0x0000000000678000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads