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/1372-1-0x0000000000C90000-0x0000000000CB4000-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
4268	powershell.exe
2304	powershell.exe
1080	powershell.exe
2532	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-1-5-21-2045521122-590294423-3465680274-1000\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-1-5-21-2045521122-590294423-3465680274-1000\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
4268	powershell.exe
4268	powershell.exe
2304	powershell.exe
2304	powershell.exe
1080	powershell.exe
1080	powershell.exe
2532	powershell.exe
2532	powershell.exe
1372	lamysoft.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	lamysoft.exe
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeDebugPrivilege	2304	powershell.exe
Token: SeDebugPrivilege	1080	powershell.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: SeDebugPrivilege	1372	lamysoft.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1372	lamysoft.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1372 wrote to memory of 4268	1372	lamysoft.exe	88
PID 1372 wrote to memory of 4268	1372	lamysoft.exe	88
PID 1372 wrote to memory of 2304	1372	lamysoft.exe	90
PID 1372 wrote to memory of 2304	1372	lamysoft.exe	90
PID 1372 wrote to memory of 1080	1372	lamysoft.exe	96
PID 1372 wrote to memory of 1080	1372	lamysoft.exe	96
PID 1372 wrote to memory of 2532	1372	lamysoft.exe	98
PID 1372 wrote to memory of 2532	1372	lamysoft.exe	98

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:1372
- 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:4268
- 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:2304
- 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:1080
- 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:2532

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
0b72469ca0585278ca9c240a42085ad7

SHA1
dd0371aab5740e6d5f44d75f02f5f2d0a16089b2

SHA256
9e9693e3e021a1a0aeac855d0c2fd330568225282ed4e2d8ea1d876457efa0db

SHA512
77929ab5f47ec18e78e9e57f0cb9a41dd02e8974b59f692175fefdd69a6e84c6c289a8e4cb563fb064857f2c3cf6ce330e8efa7dcb352691fdbd662c90c3b577

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

Filesize
944B

MD5
3b444d3f0ddea49d84cc7b3972abe0e6

SHA1
0a896b3808e68d5d72c2655621f43b0b2c65ae02

SHA256
ab075b491d20c6f66c7bd40b57538c1cfdaab5aac4715bfe3bbc7f4745860a74

SHA512
eb0ab5d68472ec42de4c9b6d84306d7bca3874be1d0ac572030a070f21a698432418068e1a6006ff88480be8c8f54c769dee74b2def403f734109dba7261f36b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_he4hzxiv.h0l.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1372-0-0x00007FFF30E43000-0x00007FFF30E45000-memory.dmp

Filesize
8KB

Download
memory/1372-1-0x0000000000C90000-0x0000000000CB4000-memory.dmp

Filesize
144KB

Download
memory/1372-56-0x00007FFF30E43000-0x00007FFF30E45000-memory.dmp

Filesize
8KB

Download
memory/1372-57-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/1372-58-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/4268-13-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/4268-14-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/4268-17-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/4268-12-0x00007FFF30E40000-0x00007FFF31901000-memory.dmp

Filesize
10.8MB

Download
memory/4268-11-0x000001919DE10000-0x000001919DE32000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads