xworm | 3f862630ab1f165e33bdf388a4829a0274abd88ee783273f03353857c21aa9a0

General

Target

TRXLoader.exe
Size

44.0MB
MD5

a4b651742b17fcb894107862b5587344
SHA1

9fb0be5290ff4cb8a7e7a41656beb950f7718f8d
SHA256

3f862630ab1f165e33bdf388a4829a0274abd88ee783273f03353857c21aa9a0
SHA512

ba19d8bc1aa69553f1ea1ab3937e226b4664be81fa77371d093a52f23a9806e7f7e9f3f11dbec805b7ed943cb571984774c5591dbedf816c7ff05aaf7da062b3
SSDEEP

1536:j3eHtRfrimdNmkKZr311OGAiQj39IdcCqcAPt9TeKd+k:KHtRp6r311RAzj390VAPt9P+k

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:38492

warning-ms.gl.at.ply.gg:38492

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0029000000045067-26.dat	family_xworm
behavioral1/memory/1844-36-0x00000000008C0000-0x00000000008DC000-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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3496	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-1-5-21-4152190078-1497776152-96910572-1000\Control Panel\International\Geo\Nation	TRXLoader.exe

Executes dropped EXE 1 IoCs

pid	Process
1844	Nursultan.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 2 IoCs

pid	Process
3496	powershell.exe
3496	powershell.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeIncreaseQuotaPrivilege	3496	powershell.exe
Token: SeSecurityPrivilege	3496	powershell.exe
Token: SeTakeOwnershipPrivilege	3496	powershell.exe
Token: SeLoadDriverPrivilege	3496	powershell.exe
Token: SeSystemProfilePrivilege	3496	powershell.exe
Token: SeSystemtimePrivilege	3496	powershell.exe
Token: SeProfSingleProcessPrivilege	3496	powershell.exe
Token: SeIncBasePriorityPrivilege	3496	powershell.exe
Token: SeCreatePagefilePrivilege	3496	powershell.exe
Token: SeBackupPrivilege	3496	powershell.exe
Token: SeRestorePrivilege	3496	powershell.exe
Token: SeShutdownPrivilege	3496	powershell.exe
Token: SeDebugPrivilege	3496	powershell.exe
Token: SeSystemEnvironmentPrivilege	3496	powershell.exe
Token: SeRemoteShutdownPrivilege	3496	powershell.exe
Token: SeUndockPrivilege	3496	powershell.exe
Token: SeManageVolumePrivilege	3496	powershell.exe
Token: 33	3496	powershell.exe
Token: 34	3496	powershell.exe
Token: 35	3496	powershell.exe
Token: 36	3496	powershell.exe
Token: SeDebugPrivilege	1844	Nursultan.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 236 wrote to memory of 3496	236	TRXLoader.exe	86
PID 236 wrote to memory of 3496	236	TRXLoader.exe	86
PID 236 wrote to memory of 1844	236	TRXLoader.exe	89
PID 236 wrote to memory of 1844	236	TRXLoader.exe	89

C:\Users\Admin\AppData\Local\Temp\TRXLoader.exe
"C:\Users\Admin\AppData\Local\Temp\TRXLoader.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:236
- 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\Nursultan.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3496
- C:\Users\Admin\AppData\Local\Temp\Nursultan.exe
  "C:\Users\Admin\AppData\Local\Temp\Nursultan.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1844

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Nursultan.exe

Filesize
87KB

MD5
38fc92faaaa97884e49674a2fb59dffa

SHA1
d2fdfcd6a426e4a0eb3dfc3b1c0d09ea0db945a2

SHA256
26d868f392303276bb62ce6771ec4bae63add8874e2621549d447490112ba992

SHA512
b8d4a64a9e02e96848d9285b3a6e7986cf4c54a520f75354008815790d7001361b3e570d9ff1c2d5e747ee1943b6bee791012120b536b06edb534aa76c445777

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l2ugtcfo.bsf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/236-1-0x0000000000F50000-0x0000000000F78000-memory.dmp

Filesize
160KB

Download
memory/236-39-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/236-0-0x00007FFE55013000-0x00007FFE55015000-memory.dmp

Filesize
8KB

Download
memory/236-37-0x00007FFE55013000-0x00007FFE55015000-memory.dmp

Filesize
8KB

Download
memory/236-35-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/1844-36-0x00000000008C0000-0x00000000008DC000-memory.dmp

Filesize
112KB

Download
memory/3496-12-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-19-0x0000027CB28A0000-0x0000027CB28EC000-memory.dmp

Filesize
304KB

Download
memory/3496-20-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-16-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-15-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-14-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-13-0x00007FFE55010000-0x00007FFE55AD2000-memory.dmp

Filesize
10.8MB

Download
memory/3496-2-0x0000027C9A260000-0x0000027C9A282000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing