xworm | a1715115f4e541c7c69235aa8dc446857e5d6dbc1d4f28c7b4cf72122bad0248

General

Target

AntiCheat.exe
Size

65KB
MD5

ecf14cc5ff0424515577c9a2c5c3f778
SHA1

d91bdfe875552295fa07bf53da7ea3775b409006
SHA256

a1715115f4e541c7c69235aa8dc446857e5d6dbc1d4f28c7b4cf72122bad0248
SHA512

b57df6f7c05573dc0b612dacaf164486e19a0183683a06ef6c01a317bf98e16101cba1dd54c405e09ae0afc1868b42079a52cbbed2e8db8dcaf8f6f6661148b1
SSDEEP

1536:Vs4ew6fIj+QcTE80/uv2VV4bUOvCCj46oSpy9FfyWXaOe80R5z:OhQbueYbUZyy9F6WqOt0R5z

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

weeks-deployment.gl.at.ply.gg:56058

Attributes

Install_directory
%AppData%
install_file
System32.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3160-1-0x00000000004C0000-0x00000000004D6000-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
1856	powershell.exe
3572	powershell.exe
1048	powershell.exe
3684	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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	AntiCheat.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	AntiCheat.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	AntiCheat.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
26	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 8 IoCs

pid	Process
3684	powershell.exe
3684	powershell.exe
1856	powershell.exe
1856	powershell.exe
3572	powershell.exe
3572	powershell.exe
1048	powershell.exe
1048	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3160	AntiCheat.exe
Token: SeDebugPrivilege	3684	powershell.exe
Token: SeDebugPrivilege	1856	powershell.exe
Token: SeDebugPrivilege	3572	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe
Token: SeDebugPrivilege	3160	AntiCheat.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3160 wrote to memory of 3684	3160	AntiCheat.exe	88
PID 3160 wrote to memory of 3684	3160	AntiCheat.exe	88
PID 3160 wrote to memory of 1856	3160	AntiCheat.exe	93
PID 3160 wrote to memory of 1856	3160	AntiCheat.exe	93
PID 3160 wrote to memory of 3572	3160	AntiCheat.exe	96
PID 3160 wrote to memory of 3572	3160	AntiCheat.exe	96
PID 3160 wrote to memory of 1048	3160	AntiCheat.exe	98
PID 3160 wrote to memory of 1048	3160	AntiCheat.exe	98

C:\Users\Admin\AppData\Local\Temp\AntiCheat.exe
"C:\Users\Admin\AppData\Local\Temp\AntiCheat.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3160
- 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\AntiCheat.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3684
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AntiCheat.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1856
- 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\System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3572
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1048

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
8005014028d9df556f2fe7f3128360a3

SHA1
8dde6ebf12ce79eba432a8969ece767c1dba81d4

SHA256
9fe186d8304132169445fbecc53ee702080f9f8f701e2398516600ab0479c781

SHA512
7da99eae8113349b8f63d4a54586c6329165c41cdba0c2726880d4894b3a3b2f8d56a55e4016edc7d883cb8d8267555eb1c44f0e720668a433a92e343238ceed

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uzokwl0j.2py.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3160-0-0x00007FFD900B3000-0x00007FFD900B5000-memory.dmp

Filesize
8KB

Download
memory/3160-2-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/3160-1-0x00000000004C0000-0x00000000004D6000-memory.dmp

Filesize
88KB

Download
memory/3160-57-0x00007FFD900B3000-0x00007FFD900B5000-memory.dmp

Filesize
8KB

Download
memory/3160-58-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/3684-10-0x000001E926990000-0x000001E9269B2000-memory.dmp

Filesize
136KB

Download
memory/3684-15-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/3684-18-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/3684-4-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download
memory/3684-3-0x00007FFD900B0000-0x00007FFD90B71000-memory.dmp

Filesize
10.8MB

Download

Analysis

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