xworm | 6ebd5512d5cede4fdf769c35a48727c5fd5acb8ac40ae4c5ea7e9ca37fc8747b

General

Target

LastActivityView.exe
Size

89KB
MD5

499e35df562563babfff6a1d2ee71743
SHA1

7bece5115d9df1fa43b6a7a69f9574a498388960
SHA256

6ebd5512d5cede4fdf769c35a48727c5fd5acb8ac40ae4c5ea7e9ca37fc8747b
SHA512

2df1934de1f45661ab929a7f7658478f5a3d8cacfbe682f1f6b8bee8a49ab2720141a1c0ea74608e14002ff5132cb0932c7fb5b3790575b5e23c5327adfdf377
SSDEEP

1536:XQol2xVvTS+KaYKvHUxErb2PPSUF2Q06yG2OklzG2OrSBR27KmhDWP:XQvVqaZsqrbeafQUmklzG2OrUyKdP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

https://pastebin.com/raw/R8gFU5SX:123456789

Attributes

Install_directory
%ProgramData%
install_file
{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
pastebin_url
https://pastebin.com/raw/R8gFU5SX

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/800-0-0x0000000000220000-0x000000000023C000-memory.dmp	family_xworm
behavioral2/files/0x0024000000023501-57.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
116	powershell.exe
436	powershell.exe
3648	powershell.exe
1132	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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	LastActivityView.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.lnk	LastActivityView.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.lnk	LastActivityView.exe

Executes dropped EXE 3 IoCs

pid	Process
1716	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
4580	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
1476	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.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-1-5-21-2818691465-3043947619-2475182763-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052 = "C:\\ProgramData\\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe"	LastActivityView.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
29	pastebin.com
30	pastebin.com
38	2.tcp.eu.ngrok.io

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
26	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
4312	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
800	LastActivityView.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
116	powershell.exe
116	powershell.exe
436	powershell.exe
436	powershell.exe
3648	powershell.exe
3648	powershell.exe
1132	powershell.exe
1132	powershell.exe
800	LastActivityView.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	800	LastActivityView.exe
Token: SeDebugPrivilege	116	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeDebugPrivilege	3648	powershell.exe
Token: SeDebugPrivilege	1132	powershell.exe
Token: SeDebugPrivilege	800	LastActivityView.exe
Token: SeDebugPrivilege	1716	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
Token: SeDebugPrivilege	4580	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
Token: SeDebugPrivilege	1476	{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
800	LastActivityView.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 116	800	LastActivityView.exe	93
PID 800 wrote to memory of 116	800	LastActivityView.exe	93
PID 800 wrote to memory of 436	800	LastActivityView.exe	96
PID 800 wrote to memory of 436	800	LastActivityView.exe	96
PID 800 wrote to memory of 3648	800	LastActivityView.exe	98
PID 800 wrote to memory of 3648	800	LastActivityView.exe	98
PID 800 wrote to memory of 1132	800	LastActivityView.exe	100
PID 800 wrote to memory of 1132	800	LastActivityView.exe	100
PID 800 wrote to memory of 4312	800	LastActivityView.exe	102
PID 800 wrote to memory of 4312	800	LastActivityView.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\LastActivityView.exe
"C:\Users\Admin\AppData\Local\Temp\LastActivityView.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:800
- 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\LastActivityView.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:116
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'LastActivityView.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1132
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052" /tr "C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe"
  2⤵
  - Creates scheduled task(s)
  PID:4312

C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1716

C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4580

C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\ProgramData\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.exe

Filesize
89KB

MD5
499e35df562563babfff6a1d2ee71743

SHA1
7bece5115d9df1fa43b6a7a69f9574a498388960

SHA256
6ebd5512d5cede4fdf769c35a48727c5fd5acb8ac40ae4c5ea7e9ca37fc8747b

SHA512
2df1934de1f45661ab929a7f7658478f5a3d8cacfbe682f1f6b8bee8a49ab2720141a1c0ea74608e14002ff5132cb0932c7fb5b3790575b5e23c5327adfdf377

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\CLR_v4.0\UsageLogs\{6AF0698E-D558-4F6E-9B3C-3716689AF493}.2.ver0x0520000052000052.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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
e60eb305a7b2d9907488068b7065abd3

SHA1
1643dd7f915ac50c75bc01c53d68c5dafb9ce28d

SHA256
ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135

SHA512
95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5in1queh.cmy.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/116-9-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/116-18-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/116-15-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/116-14-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/116-3-0x0000022FB5790000-0x0000022FB57B2000-memory.dmp

Filesize
136KB

Download
memory/800-0-0x0000000000220000-0x000000000023C000-memory.dmp

Filesize
112KB

Download
memory/800-2-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/800-59-0x00007FFCA4693000-0x00007FFCA4695000-memory.dmp

Filesize
8KB

Download
memory/800-61-0x00007FFCA4690000-0x00007FFCA5151000-memory.dmp

Filesize
10.8MB

Download
memory/800-1-0x00007FFCA4693000-0x00007FFCA4695000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads