xworm | 7e61107c764e924e2e7b2dfca37bf2d8f6c440014a92e69bdd6d70ae84dde8c8

General

Target

lamysoft.exe
Size

115KB
MD5

e716953f2f1a17a9e1e00d03c022267e
SHA1

7f63945c042018d1688c77abc4d6c171b763a527
SHA256

7e61107c764e924e2e7b2dfca37bf2d8f6c440014a92e69bdd6d70ae84dde8c8
SHA512

450a53a41bd517faf298728efabd599fc983caa3197e9a04e6674179ca0d26e7cd92341033ae71ebd3ab40277b997cf9923b596a9498dbddfd0ebc62186a2449
SSDEEP

3072:2G1gT1mBpTl5JcIdm++b8IaGGWxBOo9gn/Ufv3hsX:2GGm3LJJdmnbzaGZ3S/iv3

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:47359

23.ip.gl.ply.gg:47359

Attributes

Install_directory
%AppData%
install_file
rat.exe
telegram
https://api.telegram.org/bot7327399950:AAEE8XHvYDeAYqClq1sW-CApcW7Mmn1gxoQ/sendMessage?chat_id=7223021103

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2652-1-0x00000000006C0000-0x00000000006E4000-memory.dmp	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
528	powershell.exe
1584	powershell.exe
3268	powershell.exe
852	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	lamysoft.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rat.lnk	lamysoft.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rat.lnk	lamysoft.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rat = "C:\\Users\\Admin\\AppData\\Roaming\\rat.exe"	lamysoft.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1584	powershell.exe
1584	powershell.exe
3268	powershell.exe
3268	powershell.exe
852	powershell.exe
852	powershell.exe
528	powershell.exe
528	powershell.exe
2652	lamysoft.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2652	lamysoft.exe
Token: SeDebugPrivilege	1584	powershell.exe
Token: SeDebugPrivilege	3268	powershell.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	528	powershell.exe
Token: SeDebugPrivilege	2652	lamysoft.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2652	lamysoft.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 1584	2652	lamysoft.exe	86
PID 2652 wrote to memory of 1584	2652	lamysoft.exe	86
PID 2652 wrote to memory of 3268	2652	lamysoft.exe	92
PID 2652 wrote to memory of 3268	2652	lamysoft.exe	92
PID 2652 wrote to memory of 852	2652	lamysoft.exe	94
PID 2652 wrote to memory of 852	2652	lamysoft.exe	94
PID 2652 wrote to memory of 528	2652	lamysoft.exe	96
PID 2652 wrote to memory of 528	2652	lamysoft.exe	96

C:\Users\Admin\AppData\Local\Temp\lamysoft.exe
"C:\Users\Admin\AppData\Local\Temp\lamysoft.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:2652
- 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\lamysoft.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1584
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'lamysoft.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3268
- 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\rat.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:852
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rat.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

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

Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xjud3zsk.xjn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1584-3-0x000001D8A5090000-0x000001D8A50B2000-memory.dmp

Filesize
136KB

Download
memory/1584-14-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-17-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-13-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/1584-12-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/2652-0-0x00007FFC27113000-0x00007FFC27115000-memory.dmp

Filesize
8KB

Download
memory/2652-1-0x00000000006C0000-0x00000000006E4000-memory.dmp

Filesize
144KB

Download
memory/2652-56-0x00007FFC27113000-0x00007FFC27115000-memory.dmp

Filesize
8KB

Download
memory/2652-57-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp

Filesize
10.8MB

Download
memory/2652-58-0x00007FFC27110000-0x00007FFC27BD1000-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