xworm | a2cc3be38b094728b2e63c87cc6041316bc5a52a326877626d09f16746abf95b

General

Target

XWorm V5.2.exe
Size

206KB
MD5

45e3e7d34576c7190778858e3634c4d1
SHA1

cd570c94fe0f0f0c701b688ef0aa68aaa7589c30
SHA256

a2cc3be38b094728b2e63c87cc6041316bc5a52a326877626d09f16746abf95b
SHA512

0a763390ad047746a06b1fccb08f12c47d228fb97e55f20eda5394bcbba26ed06ab2441faac5007cf43c3ecb291729caa91539a1a9071bc7133ebf8fcea4d153
SSDEEP

3072:EMmgM4RbNQJFltOqe0GuA2ewhLapuvpAsZOyMqmyBeYVYX:EMbboFDGO/GWGwqqm1

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

else-treatment.gl.at.ply.gg:31932

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1332-1-0x0000000000360000-0x000000000039A000-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

pid	Process
740	powershell.exe
3148	powershell.exe
4032	powershell.exe
5048	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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	XWorm V5.2.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XWorm V5.2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XWorm V5.2.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 9 IoCs

pid	Process
740	powershell.exe
740	powershell.exe
3148	powershell.exe
3148	powershell.exe
4032	powershell.exe
4032	powershell.exe
5048	powershell.exe
5048	powershell.exe
1332	XWorm V5.2.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	XWorm V5.2.exe
Token: SeDebugPrivilege	740	powershell.exe
Token: SeDebugPrivilege	3148	powershell.exe
Token: SeDebugPrivilege	4032	powershell.exe
Token: SeDebugPrivilege	5048	powershell.exe
Token: SeDebugPrivilege	1332	XWorm V5.2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1332	XWorm V5.2.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 740	1332	XWorm V5.2.exe	90
PID 1332 wrote to memory of 740	1332	XWorm V5.2.exe	90
PID 1332 wrote to memory of 3148	1332	XWorm V5.2.exe	93
PID 1332 wrote to memory of 3148	1332	XWorm V5.2.exe	93
PID 1332 wrote to memory of 4032	1332	XWorm V5.2.exe	95
PID 1332 wrote to memory of 4032	1332	XWorm V5.2.exe	95
PID 1332 wrote to memory of 5048	1332	XWorm V5.2.exe	97
PID 1332 wrote to memory of 5048	1332	XWorm V5.2.exe	97

C:\Users\Admin\AppData\Local\Temp\XWorm V5.2.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm V5.2.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1332
- 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\XWorm V5.2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWorm V5.2.exe'
  2⤵
  - 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4032
- 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:5048

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

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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
e8ce785f8ccc6d202d56fefc59764945

SHA1
ca032c62ddc5e0f26d84eff9895eb87f14e15960

SHA256
d85c19fc6b9d25e2168a2cc50ff38bd226fbf4f02aa7ac038a5f319522d2ffa4

SHA512
66460aec4afee582556270f8ee6048d130a090f1c12a2632ed71a99a4073e9931e9e1cc286e32debffb95a90bd955f0f0d6ec891b1c5cd2f0aae41eb6d25832f

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

Filesize
944B

MD5
b3bc9ca267ea2969eb6201d77e58560c

SHA1
78f83a443aa1ca235edcab2da9e2fda6fecc1da4

SHA256
7ea18b6f900f2c30a5c34845d62d4fe9fc1f11e40714b3dbd69592cbfb5dc695

SHA512
8cc70e4f88f3d9f59beec22dafdb403144f7f390250205e08279a2f8e01e783af44ae31aa4a8a7ea05865b05303ac5e5048f7fb44488be538d9701b6195e9b28

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_maw25uoa.bmn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/740-3-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download
memory/740-14-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download
memory/740-15-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download
memory/740-18-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download
memory/740-9-0x000001D4AD2E0000-0x000001D4AD302000-memory.dmp

Filesize
136KB

Download
memory/1332-0-0x00007FFDD28E3000-0x00007FFDD28E5000-memory.dmp

Filesize
8KB

Download
memory/1332-2-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download
memory/1332-1-0x0000000000360000-0x000000000039A000-memory.dmp

Filesize
232KB

Download
memory/1332-54-0x00007FFDD28E3000-0x00007FFDD28E5000-memory.dmp

Filesize
8KB

Download
memory/1332-58-0x00007FFDD28E0000-0x00007FFDD33A1000-memory.dmp

Filesize
10.8MB

Download

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