xworm | 150fb7fed020ccb73bcc45318b1b3ad5a53b61812187153c0a64e51eec05c432

General

Target

rerdsa.exe
Size

72KB
MD5

5b3a52ad2fc314e411d5719a7015b07b
SHA1

ca6c701a1bc285f7b9afdec944d9dbf15ca8dd8f
SHA256

150fb7fed020ccb73bcc45318b1b3ad5a53b61812187153c0a64e51eec05c432
SHA512

26c7830b7beef06d2fd7e5d8992445b000f84c953d7939c5180884e2c24caa1c19d84740a772ec7df894f7ec88d878d5a4a3a26db42967f5d67a0b001e2438c6
SSDEEP

1536:gsGRbC/RYhIpSiyyLm9Jwy2t7iHb5x9p3oHR6d45arOrdxnwMGp58:950iDLyJitWHb5Vm5SOrdxnwnp58

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:23386

cameras-happen.gl.at.ply.gg:23386

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4576-1-0x0000000000F80000-0x0000000000F98000-memory.dmp	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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

3020 powershell.exe
316 powershell.exe
4400 powershell.exe
1040 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

Processes:

rerdsa.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation rerdsa.exe

pid	process
3020	powershell.exe
316	powershell.exe
4400	powershell.exe
1040	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	rerdsa.exe

Drops startup file 2 IoCs

Processes:

rerdsa.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	rerdsa.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	rerdsa.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.

Processes:

flow ioc

3 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
3	ip-api.com

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
316	powershell.exe
316	powershell.exe
4400	powershell.exe
4400	powershell.exe
1040	powershell.exe
1040	powershell.exe
3020	powershell.exe
3020	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

rerdsa.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4576	rerdsa.exe
Token: SeDebugPrivilege	316	powershell.exe
Token: SeDebugPrivilege	4400	powershell.exe
Token: SeDebugPrivilege	1040	powershell.exe
Token: SeDebugPrivilege	3020	powershell.exe
Token: SeDebugPrivilege	4576	rerdsa.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rerdsa.exe

description	pid	process	target process
PID 4576 wrote to memory of 316	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 316	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 4400	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 4400	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 1040	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 1040	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 3020	4576	rerdsa.exe	powershell.exe
PID 4576 wrote to memory of 3020	4576	rerdsa.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\rerdsa.exe
"C:\Users\Admin\AppData\Local\Temp\rerdsa.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4576

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\rerdsa.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:316

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'rerdsa.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4400

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\XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1040

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:3020

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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
cc19bcff372d20459d3651ba8aef50e7

SHA1
3c6f1d4cdd647864fb97a16b1aefba67fcee11f7

SHA256
366473e774d8976c7fd4dc582220666fb61a4feb3f7c95e69b2a68ad9e446ec9

SHA512
a0e360ca4b6e874fd44612bf4b17f3722c0619da4f6bade12a62efadae88c2d33460114eaafa2bc3fb1cef5bea07e745b8bee24f15d0cacaff5f4a521b225080

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
e3b6cc0fbea08a0831f0026a696db8b8

SHA1
4e32202d4700061cfd80d55e42798131c9f530d4

SHA256
3284cae7b82be99d93064390ba071ba4321f3f24dd21515b37b2ca9f31b2e8d5

SHA512
6a06856f360b48c8bc8a15ffb8d7a6604ec357bcb1d0fad5d71a2cb876929a7b67eb40ba4493998ab1bbae8cb71212e124276f27d5c138a135041c27a41a0b7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bczgk23i.l01.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/316-10-0x00000245E5FD0000-0x00000245E5FF2000-memory.dmp

Filesize
136KB

Download
memory/316-15-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download
memory/316-18-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download
memory/316-4-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download
memory/316-3-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download
memory/4576-1-0x0000000000F80000-0x0000000000F98000-memory.dmp

Filesize
96KB

Download
memory/4576-2-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download
memory/4576-0-0x00007FFC35B73000-0x00007FFC35B75000-memory.dmp

Filesize
8KB

Download
memory/4576-57-0x00007FFC35B70000-0x00007FFC36631000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads