xworm | 8d4e23ba1ce9eab2340bad5e14111dc565bbe8de53653375ac3806f448dcc0ac

General

Target

OverwolfXclient.exe
Size

1.2MB
MD5

c08106fd9c5999388d5e541743d45d5b
SHA1

571f4333cd757db2870e2459724b545e43ffcc11
SHA256

8d4e23ba1ce9eab2340bad5e14111dc565bbe8de53653375ac3806f448dcc0ac
SHA512

65c2e544e88b63e8d1216731be75f0407784d620af1b2dfa649eb87e9e6408ffa43a3697a94c8d4cf6cc9f8dfc83a0a824397ac75bbdde9fe3440802117e8261
SSDEEP

24576:908rin0gKu22AcpyGCcCBSrikukOqk344WIGu31rg:908rin0gKu22AcpyGC9kTOK4WIGWg

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:7777

45.145.41.147:7777

Mutex

5N4ZirqATbPp1e8c

Attributes

Install_directory
%ProgramData%
install_file
WinBackup.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3056-6-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 3 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.exe

pid process

3528 powershell.exe
4112 powershell.exe
1476 powershell.exe
Drops startup file 1 IoCs

Processes:

OverwolfXclient.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\%startupname%.lnk OverwolfXclient.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

26 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

OverwolfXclient.exe

description pid process target process

PID 4764 set thread context of 3056 4764 OverwolfXclient.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid process

3528 powershell.exe
3528 powershell.exe
4112 powershell.exe
4112 powershell.exe
1476 powershell.exe
1476 powershell.exe
1476 powershell.exe

pid	process
3528	powershell.exe
4112	powershell.exe
1476	powershell.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\%startupname%.lnk	OverwolfXclient.exe

flow	ioc
26	ip-api.com

description	pid	process	target process
PID 4764 set thread context of 3056	4764	OverwolfXclient.exe	MSBuild.exe

pid	process
3528	powershell.exe
3528	powershell.exe
4112	powershell.exe
4112	powershell.exe
1476	powershell.exe
1476	powershell.exe
1476	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

MSBuild.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3056	MSBuild.exe
Token: SeDebugPrivilege	3528	powershell.exe
Token: SeDebugPrivilege	4112	powershell.exe
Token: SeDebugPrivilege	1476	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

OverwolfXclient.exeMSBuild.exe

description	pid	process	target process
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 4764 wrote to memory of 3056	4764	OverwolfXclient.exe	MSBuild.exe
PID 3056 wrote to memory of 3528	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 3528	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 3528	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 4112	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 4112	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 4112	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 1476	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 1476	3056	MSBuild.exe	powershell.exe
PID 3056 wrote to memory of 1476	3056	MSBuild.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\OverwolfXclient.exe
"C:\Users\Admin\AppData\Local\Temp\OverwolfXclient.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4764

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3528

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'MSBuild.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4112

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\WinBackup.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1476

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
7d542d73462a7c2c5ab719db7be1905b

SHA1
34d163b6f6099b78fc861f505ab859b03ac87b97

SHA256
35f05ebb7ed8ee422d1d3d7c5a51d691818ad705ad8ad48b2559fcc73329c136

SHA512
5e8abda2a14cba325ebc23333229ab1ca6a39ecc06d7f53143ec32afa6f5da8c25c39299a01da599e4b08354f4ec37b36c80062de89fa92272a03706c140f108

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
90a6c2ea383108171c21ee547cf775ab

SHA1
3f4289ede4546a268b3116cede20049ff4e600ab

SHA256
4d100934dae3fd744fd937390dc8004a1c2d15deb8a9c9ce4dccf5bbdc41157b

SHA512
6dff61f16c4719b29bb73eb4c6b2ef08279409e425a1bdf9b78afe1fc30e94d84a6967c4edd915a8dd2f9f5cc774300c5bd1a60b8a6a8659a7466e0f3f54992f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sqv5agpp.zek.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1476-87-0x0000000070090000-0x00000000700DC000-memory.dmp

Filesize
304KB

Download
memory/3056-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3056-8-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3056-9-0x00000000055A0000-0x0000000005606000-memory.dmp

Filesize
408KB

Download
memory/3056-10-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-28-0x0000000005C60000-0x0000000005CAC000-memory.dmp

Filesize
304KB

Download
memory/3528-43-0x0000000006F60000-0x0000000006F7A000-memory.dmp

Filesize
104KB

Download
memory/3528-13-0x0000000004DA0000-0x00000000053C8000-memory.dmp

Filesize
6.2MB

Download
memory/3528-14-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-15-0x0000000004D60000-0x0000000004D82000-memory.dmp

Filesize
136KB

Download
memory/3528-16-0x00000000054C0000-0x0000000005526000-memory.dmp

Filesize
408KB

Download
memory/3528-11-0x0000000004660000-0x0000000004696000-memory.dmp

Filesize
216KB

Download
memory/3528-26-0x0000000005750000-0x0000000005AA4000-memory.dmp

Filesize
3.3MB

Download
memory/3528-27-0x0000000005C30000-0x0000000005C4E000-memory.dmp

Filesize
120KB

Download
memory/3528-53-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-29-0x0000000006210000-0x0000000006242000-memory.dmp

Filesize
200KB

Download
memory/3528-30-0x0000000070090000-0x00000000700DC000-memory.dmp

Filesize
304KB

Download
memory/3528-40-0x00000000061F0000-0x000000000620E000-memory.dmp

Filesize
120KB

Download
memory/3528-41-0x0000000006C10000-0x0000000006CB3000-memory.dmp

Filesize
652KB

Download
memory/3528-42-0x00000000075B0000-0x0000000007C2A000-memory.dmp

Filesize
6.5MB

Download
memory/3528-12-0x0000000075010000-0x00000000757C0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-44-0x0000000006FD0000-0x0000000006FDA000-memory.dmp

Filesize
40KB

Download
memory/3528-45-0x00000000071E0000-0x0000000007276000-memory.dmp

Filesize
600KB

Download
memory/3528-46-0x0000000007160000-0x0000000007171000-memory.dmp

Filesize
68KB

Download
memory/3528-47-0x0000000007190000-0x000000000719E000-memory.dmp

Filesize
56KB

Download
memory/3528-48-0x00000000071A0000-0x00000000071B4000-memory.dmp

Filesize
80KB

Download
memory/3528-49-0x00000000072A0000-0x00000000072BA000-memory.dmp

Filesize
104KB

Download
memory/3528-50-0x0000000007280000-0x0000000007288000-memory.dmp

Filesize
32KB

Download
memory/4112-57-0x0000000005B60000-0x0000000005EB4000-memory.dmp

Filesize
3.3MB

Download
memory/4112-66-0x0000000070090000-0x00000000700DC000-memory.dmp

Filesize
304KB

Download
memory/4764-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/4764-5-0x0000000006880000-0x0000000006936000-memory.dmp

Filesize
728KB

Download
memory/4764-3-0x00000000060D0000-0x0000000006674000-memory.dmp

Filesize
5.6MB

Download
memory/4764-2-0x0000000005A80000-0x0000000005B1C000-memory.dmp

Filesize
624KB

Download
memory/4764-1-0x0000000000F00000-0x000000000103A000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads