xworm | ab1524dd1797e3ca240b19261f3b6c96e22c9aae55652433f7586bd8a650396d

General

Target

XClient.exe
Size

69KB
MD5

83479ef0a57ba7fe7e994e4c6e5801ce
SHA1

93826d2f4a794a73c0ea9a2ff746becea5a32024
SHA256

ab1524dd1797e3ca240b19261f3b6c96e22c9aae55652433f7586bd8a650396d
SHA512

bace043a00f1d459a6d19e18854ab0dadf4677fb6f8d1adca8e1f85a054046285ef7f94910a88f2e383f86ca9cb7a2e2522ff85fcdc5a38eed7784bd2db54092
SSDEEP

1536:LccMYH9VP/8JT9WBftubjrc2Xgh61oNeOtxMNuTrguDf:L3LP0WCbj/XJAeOkNurTf

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

AmirAmir8565-56372.portmap.io:56372

AmirAmir8565-56372.portmap.io:56372:56372

127.0.0.1:56372

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3404-1-0x0000000000110000-0x0000000000128000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2368	powershell.exe
4968	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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	XClient.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
17	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
2368	powershell.exe
2368	powershell.exe
4968	powershell.exe
4968	powershell.exe
3404	XClient.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3404	XClient.exe
Token: SeDebugPrivilege	2368	powershell.exe
Token: SeDebugPrivilege	4968	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3404	XClient.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3404 wrote to memory of 2368	3404	XClient.exe	89
PID 3404 wrote to memory of 2368	3404	XClient.exe	89
PID 3404 wrote to memory of 4968	3404	XClient.exe	92
PID 3404 wrote to memory of 4968	3404	XClient.exe	92

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3404
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2368
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4968

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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uh0r24s4.p1e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2368-6-0x0000015F1F590000-0x0000015F1F5B2000-memory.dmp

Filesize
136KB

Download
memory/2368-4-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download
memory/2368-5-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download
memory/2368-3-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download
memory/2368-18-0x0000015F1F5C0000-0x0000015F1F7DC000-memory.dmp

Filesize
2.1MB

Download
memory/2368-19-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download
memory/3404-0-0x00007FF9D6763000-0x00007FF9D6765000-memory.dmp

Filesize
8KB

Download
memory/3404-2-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download
memory/3404-1-0x0000000000110000-0x0000000000128000-memory.dmp

Filesize
96KB

Download
memory/3404-32-0x00007FF9D6763000-0x00007FF9D6765000-memory.dmp

Filesize
8KB

Download
memory/3404-33-0x00007FF9D6760000-0x00007FF9D7221000-memory.dmp

Filesize
10.8MB

Download

Analysis

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