xworm | 60aa1551d29da3fd64bcd365f40eabb8a565df3cdbe97c7f4f74ed181cd80785

General

Target

loader.exe
Size

92KB
MD5

8167096dc2cfe3130dd53f46e45a16ad
SHA1

6dd5a9607c2585bb023ae44c53d0445f45b147c1
SHA256

60aa1551d29da3fd64bcd365f40eabb8a565df3cdbe97c7f4f74ed181cd80785
SHA512

a2f9c68f197123926599eb056c036a5b709896dc510f3e72bf3de56fa85b49e0b77dd5563ca9ae4f4d42effe050202b50f4ed388b5aaded1797694d5732815dd
SSDEEP

1536:4FwxKDFTMC5Q8lV3aRTriFfRTzMJCeRLkLZi5qTKaPpb5NQOiDXavlKuDbNSKft6:RxKD5Q8v3YcZTzMweRgLL3dOKv0usKfk

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

ring-cj.gl.at.ply.gg:28371

Attributes

Install_directory
%AppData%
install_file
keyauth.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023c87-6.dat	family_xworm
behavioral2/memory/1192-14-0x0000000000CE0000-0x0000000000CFA000-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 3 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4496	powershell.exe
3148	powershell.exe
4708	powershell.exe

Checks computer location settings 2 TTPs 2 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	loaderr.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	loader.exe

Executes dropped EXE 1 IoCs

pid	Process
1192	loaderr.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

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4496	powershell.exe
4496	powershell.exe
3148	powershell.exe
3148	powershell.exe
4708	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	loaderr.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	3148	powershell.exe
Token: SeDebugPrivilege	4708	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3132 wrote to memory of 1192	3132	loader.exe	82
PID 3132 wrote to memory of 1192	3132	loader.exe	82
PID 1192 wrote to memory of 4496	1192	loaderr.exe	84
PID 1192 wrote to memory of 4496	1192	loaderr.exe	84
PID 1192 wrote to memory of 3148	1192	loaderr.exe	86
PID 1192 wrote to memory of 3148	1192	loaderr.exe	86
PID 1192 wrote to memory of 4708	1192	loaderr.exe	88
PID 1192 wrote to memory of 4708	1192	loaderr.exe	88

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Users\Admin\AppData\Roaming\loaderr.exe
  "C:\Users\Admin\AppData\Roaming\loaderr.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1192
- - 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\loaderr.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4496
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loaderr.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3148
- - 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\keyauth.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

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\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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
0a6d0c1c9b5a7bb27f7e5e631799debb

SHA1
43ada7a5da7f6e868160d0d68ade3c91ef08cad8

SHA256
a9f9d3475a4489a253bd98c17ef01eef0d63d89f6a300de431726c54e592a749

SHA512
46572296bef8861a3bd3ea99e3536cb0476f83d012363d326c8fbfb25133f3857485f7d2820e2c3e0a9e9985ed9e3b9f13ef8f617440c1d35638f4ab79b426ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jm51ftpk.22b.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
79KB

MD5
1d09928c4fd6cba5e6d0e7bd0c16e108

SHA1
284031725d2f177fe4d71b5e5c51a3f5b582c804

SHA256
30ed1de652205d86db65846b5623f1cd0472e671670e8f7b97760cd6a8320088

SHA512
d0b70facd3c250eeca077aaff1bf494c165b33a0b91426020435300c5dd3ad43bf167956fc8d8eb26522183b1287e9ccaaf130007cc40a0dfb43434071ebf2fb

Download Submit
memory/1192-14-0x0000000000CE0000-0x0000000000CFA000-memory.dmp

Filesize
104KB

Download
memory/1192-15-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/1192-16-0x00007FFDDEDD0000-0x00007FFDDF891000-memory.dmp

Filesize
10.8MB

Download
memory/3132-0-0x00007FFDDEDD3000-0x00007FFDDEDD5000-memory.dmp

Filesize
8KB

Download
memory/3132-1-0x0000000000800000-0x000000000081E000-memory.dmp

Filesize
120KB

Download
memory/4496-17-0x0000012438050000-0x0000012438072000-memory.dmp

Filesize
136KB

Download

Analysis

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