xworm | f14d1d27a20ad79684026a18395389354d6dc0e529d2d795bf80e3b66f76913b

General

Target

tergdfgdfg.exe
Size

80KB
MD5

9410280381c7972ba775e13d094a87e0
SHA1

3389d7bf5fdc0c613bb130da42d76968b221392d
SHA256

f14d1d27a20ad79684026a18395389354d6dc0e529d2d795bf80e3b66f76913b
SHA512

2c829e655ac71245f8258015556910b6f9eb2988c9e1bb1ecafedee7406b13a10f586f5d3cdecdc374fd8763d538eb2cf84db3a98aec6076629d87bcf998e5b9
SSDEEP

1536:ccrBb0z39BE4SNMZlvaE67897ymsDKM88wEaCnbeHsy/yim/1y1ejY6yFOBa:zrBbcnCMZlvaZM2msWxEleJ/yjgf6yFD

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3516-4-0x0000000007070000-0x0000000007082000-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
4900	powershell.exe
4048	powershell.exe
4652	powershell.exe
3384	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SubDir.lnk	Explorer.EXE
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SubDir.lnk	Explorer.EXE

Executes dropped EXE 2 IoCs

pid	Process
2008	SubDir.exe
1604	SubDir.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyApplication = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tergdfgdfg.exe"	tergdfgdfg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SubDir = "C:\\Users\\Admin\\AppData\\Roaming\\SubDir.exe"	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	explorer.exe

Modifies registry class 16 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2593460650-190333679-3676257533-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	explorer.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2404	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4764	explorer.exe
4028	explorer.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4276	tergdfgdfg.exe
4276	tergdfgdfg.exe
4900	powershell.exe
4900	powershell.exe
4048	powershell.exe
4048	powershell.exe
4652	powershell.exe
4652	powershell.exe
3384	powershell.exe
3384	powershell.exe
3516	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	3516	Explorer.EXE
Token: SeDebugPrivilege	4900	powershell.exe
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeDebugPrivilege	4048	powershell.exe
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeDebugPrivilege	3384	powershell.exe
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeDebugPrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE
Token: SeShutdownPrivilege	3516	Explorer.EXE
Token: SeCreatePagefilePrivilege	3516	Explorer.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
3516	Explorer.EXE
4764	explorer.exe
4764	explorer.exe
4028	explorer.exe
4028	explorer.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4276 wrote to memory of 3516	4276	tergdfgdfg.exe	56
PID 3516 wrote to memory of 4900	3516	Explorer.EXE	95
PID 3516 wrote to memory of 4900	3516	Explorer.EXE	95
PID 3516 wrote to memory of 4048	3516	Explorer.EXE	97
PID 3516 wrote to memory of 4048	3516	Explorer.EXE	97
PID 3516 wrote to memory of 4652	3516	Explorer.EXE	99
PID 3516 wrote to memory of 4652	3516	Explorer.EXE	99
PID 3516 wrote to memory of 3384	3516	Explorer.EXE	102
PID 3516 wrote to memory of 3384	3516	Explorer.EXE	102
PID 3516 wrote to memory of 2404	3516	Explorer.EXE	104
PID 3516 wrote to memory of 2404	3516	Explorer.EXE	104

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops startup file
- Adds Run key to start application
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\tergdfgdfg.exe
  "C:\Users\Admin\AppData\Local\Temp\tergdfgdfg.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4276
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Explorer.EXE'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Explorer.EXE'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4048
- 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\SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4652
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SubDir.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3384
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SubDir" /tr "C:\Users\Admin\AppData\Roaming\SubDir.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2404

C:\Users\Admin\AppData\Roaming\SubDir.exe
C:\Users\Admin\AppData\Roaming\SubDir.exe
1⤵
- Executes dropped EXE
PID:2008

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4764

C:\Users\Admin\AppData\Roaming\SubDir.exe
C:\Users\Admin\AppData\Roaming\SubDir.exe
1⤵
- Executes dropped EXE
PID:1604

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
944B

MD5
0818c4dff5d5a40735c0171360055731

SHA1
87a84ee78b2dfdb46a50b95a3f73ec432952e125

SHA256
a3019e821c6e776e8cbb2cfc47086edd00dc8c507004a21bcbef78a5324114db

SHA512
1db8c05a6facaaaccc6f10b12889a321243c5640883a5814276e48d7ba570eb667d941d0c7bb6f0d4611d17b57567d4ea25c8b564fd7ee53fde846fbafa1120c

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_2i3zv0rf.mfm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir.exe

Filesize
4.6MB

MD5
30decee483a8196b30643ec6a453a7de

SHA1
92266131aff3595c5a95d3aa23c9e40c85d5f982

SHA256
3dc254ad131a691acb1f9e3a5bb5ca5b3ea891869e516f4b3580ea4fcfdf2e76

SHA512
a8f370c060223d4c2985ac16e78547779e584020e95428e85b497464fc487611d7b080908f904c11aa93bc7b56ec102845fbb6554d97dcba7fdc856c93087f00

Download Submit
memory/3516-3-0x00007FFCD0853000-0x00007FFCD0855000-memory.dmp

Filesize
8KB

Download
memory/3516-64-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/3516-59-0x00007FFCD0853000-0x00007FFCD0855000-memory.dmp

Filesize
8KB

Download
memory/3516-5-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/3516-46-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/3516-4-0x0000000007070000-0x0000000007082000-memory.dmp

Filesize
72KB

Download
memory/3516-2-0x0000000002A90000-0x0000000002AA3000-memory.dmp

Filesize
76KB

Download
memory/4048-35-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/4048-23-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/4276-0-0x00007FFCD0853000-0x00007FFCD0855000-memory.dmp

Filesize
8KB

Download
memory/4276-1-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/4900-21-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/4900-18-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/4900-17-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download
memory/4900-14-0x0000024EFB9E0000-0x0000024EFBA02000-memory.dmp

Filesize
136KB

Download
memory/4900-6-0x00007FFCD0850000-0x00007FFCD1311000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads