xworm | 198f82a2b491cb5c769d25c03ea7908161e20a9b51b585099f7088cef5c4323e

General

Target

XwormV5.6.exe
Size

15.0MB
MD5

2ff4c5a7eff1d9f19e23156dceeca4d0
SHA1

d8c175bb2b968713d48b37e1d018c8736a34ea6d
SHA256

198f82a2b491cb5c769d25c03ea7908161e20a9b51b585099f7088cef5c4323e
SHA512

2c839576c2a9ce47b4d37325417a4055e4f8674323b6b1a558fac35628eaf32e354271936ceb8dc6a38ccc24b170cc17c08e74a994e8363831b410810d676a05
SSDEEP

3072:LJKhDbtkb2D7wyOQnxZd+xYoPdLa5a47Qnx5RUUOMlv1s8W:LJKhDSbFGExYoPJatsjtlv1s8

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

193.161.193.99:63603

37.4.250.173:63603

Attributes

Install_directory
%AppData%
install_file
XwormV6.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral3/memory/3064-1-0x0000000000560000-0x0000000000584000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3068	powershell.exe
4540	powershell.exe
4868	powershell.exe
1944	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	XwormV5.6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XwormV6.lnk	XwormV5.6.exe

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
3068	powershell.exe
3068	powershell.exe
4540	powershell.exe
4540	powershell.exe
4868	powershell.exe
4868	powershell.exe
1944	powershell.exe
1944	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3064	XwormV5.6.exe
Token: SeDebugPrivilege	3068	powershell.exe
Token: SeDebugPrivilege	4540	powershell.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	1944	powershell.exe
Token: SeDebugPrivilege	3064	XwormV5.6.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 3068	3064	XwormV5.6.exe	81
PID 3064 wrote to memory of 3068	3064	XwormV5.6.exe	81
PID 3064 wrote to memory of 4540	3064	XwormV5.6.exe	83
PID 3064 wrote to memory of 4540	3064	XwormV5.6.exe	83
PID 3064 wrote to memory of 4868	3064	XwormV5.6.exe	85
PID 3064 wrote to memory of 4868	3064	XwormV5.6.exe	85
PID 3064 wrote to memory of 1944	3064	XwormV5.6.exe	87
PID 3064 wrote to memory of 1944	3064	XwormV5.6.exe	87

C:\Users\Admin\AppData\Local\Temp\XwormV5.6.exe
"C:\Users\Admin\AppData\Local\Temp\XwormV5.6.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3064
- 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\XwormV5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormV5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4540
- 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\XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4868
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormV6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1944

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

System Information Discovery

1

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
05b3cd21c1ec02f04caba773186ee8d0

SHA1
39e790bfe10abf55b74dfb3603df8fcf6b5e6edb

SHA256
911efc5cf9cbeb697543eb3242f5297e1be46dd6603a390140a9ff031ed9e1e8

SHA512
e751008b032394817beb46937fd93a73be97254c2be94dd42f22fb1306d2715c653ece16fa96eab1a3e73811936768cea6b37888437086fc6f3e3e793a2515eb

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

Filesize
944B

MD5
e1bbdcd1100fd03ff0b6402fd8abd8ad

SHA1
76af750b4db8fc6cc3e57197762ac0760e47e868

SHA256
e8797c3902f771187d64dc8f39ad26641188e96d5f7218c8211512076ee5f95e

SHA512
11ad29bd424421cfdd10b1ed7c0125aff933d838ea3677519dd9767c7f560586b98e67cf70c1f05a6f1bda413ce7e62239b2caf09a50395943da66891a7db915

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

Filesize
944B

MD5
3c0fe86517be16d2b0a671148c0274d2

SHA1
bd7a487a037395e9ede9e76b4a455fdf386ba8db

SHA256
5f85aaa0472b8ae98352b7295cd59357e3e585b2299c540e9a8b5848a8d6b302

SHA512
642bc58c0a5682b45056e837be0dc5d1cd8c400f0e73f20d17c19720fb1fdae132b86873100955e9d65f72f1d481704b84c30d440ca53898c6d6d6f106b74f0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0yn4r15z.1v2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3064-0-0x00007FFF335C3000-0x00007FFF335C5000-memory.dmp

Filesize
8KB

Download
memory/3064-1-0x0000000000560000-0x0000000000584000-memory.dmp

Filesize
144KB

Download
memory/3064-52-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3064-53-0x00007FFF335C3000-0x00007FFF335C5000-memory.dmp

Filesize
8KB

Download
memory/3064-54-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3068-12-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3068-15-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3068-16-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3068-11-0x00007FFF335C0000-0x00007FFF34082000-memory.dmp

Filesize
10.8MB

Download
memory/3068-2-0x000001C0596F0000-0x000001C059712000-memory.dmp

Filesize
136KB

Download

Analysis

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