xworm | b3e217c467cfe1e8079e82b88f2f99950a9459330a8843070ebb34bf3e2bcf38

General

Target

file.exe
Size

72KB
MD5

8d52069bd117da94e0b0b70e73e33fb0
SHA1

e8090adddff167e1bda4194af968ba4bc22a2d60
SHA256

b3e217c467cfe1e8079e82b88f2f99950a9459330a8843070ebb34bf3e2bcf38
SHA512

7a91eeb0cf3edb53d0ac3d51abe85c97bb09da5b334b387fda90144a2f3729693367c451fee9e04cb953dcf8d9d1b91ee12961bfe9f1e53c0ab06aababd696ed
SSDEEP

1536:8C7dCCRXek2ycziKLGIp78eax9xbMxioyAgDd+E6V186Oc8E2el:p7MKOHXBGVpxbIEAgRA1dOcYel

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

87.120.112.33:8398

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot6673004050:AAEcDfPnnGAswDvyrn9-bkOySVSnbPqLnBU/sendMessage?chat_id=1470436579

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/640-1-0x00000000004E0000-0x00000000004F8000-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
32	powershell.exe
2008	powershell.exe
4624	powershell.exe
400	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	file.exe

Drops startup file 2 IoCs

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.exe"	file.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
640	file.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
32	powershell.exe
32	powershell.exe
2008	powershell.exe
2008	powershell.exe
4624	powershell.exe
4624	powershell.exe
400	powershell.exe
400	powershell.exe
640	file.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	file.exe
Token: SeDebugPrivilege	32	powershell.exe
Token: SeDebugPrivilege	2008	powershell.exe
Token: SeDebugPrivilege	4624	powershell.exe
Token: SeDebugPrivilege	400	powershell.exe
Token: SeDebugPrivilege	640	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
640	file.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 32	640	file.exe	82
PID 640 wrote to memory of 32	640	file.exe	82
PID 640 wrote to memory of 2008	640	file.exe	84
PID 640 wrote to memory of 2008	640	file.exe	84
PID 640 wrote to memory of 4624	640	file.exe	86
PID 640 wrote to memory of 4624	640	file.exe	86
PID 640 wrote to memory of 400	640	file.exe	88
PID 640 wrote to memory of 400	640	file.exe	88

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640
- 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\file.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:32
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'file.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2008
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4624
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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
cb3a799921d48256ab45414af88b0aa8

SHA1
8888fb5656f5f11576c0fbc3ba45d7df56000d28

SHA256
5ad60a0e324106c6b5a8a7c41b4eac83234ed53cf26025dd4d63c0750b265105

SHA512
21b53b49d0f95cb600444b15a274c31d9374ae96dc2ab464e6ada96bae11f1000e92f6f51f62e5b91891dbbb30e6ab9c71006a9a166b8d4ae24457dcd7efdf69

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

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

Filesize
944B

MD5
212ca8e1cb9476987cd76068c132e1bc

SHA1
cf24406c555ac794a5481b2aad04a4b84efb2a43

SHA256
5e2f2f052da4b8fd9167448cf4cb4d0937e483b394fbbc2b8e83cdbedcaad7bc

SHA512
464ec87144adccce6d32e29abd67164484f059572cfe78d7806a4847ecd150b5ce3e0a17caf0b1442e56242ccf956a0172d17499e7ba714069bdc51e2f6424ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kj4443n3.jct.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/32-7-0x00000170CD390000-0x00000170CD3B2000-memory.dmp

Filesize
136KB

Download
memory/32-14-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download
memory/32-17-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download
memory/32-13-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download
memory/32-12-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download
memory/640-0-0x00007FFBF2B73000-0x00007FFBF2B75000-memory.dmp

Filesize
8KB

Download
memory/640-1-0x00000000004E0000-0x00000000004F8000-memory.dmp

Filesize
96KB

Download
memory/640-56-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download
memory/640-57-0x00007FFBF2B73000-0x00007FFBF2B75000-memory.dmp

Filesize
8KB

Download
memory/640-58-0x00007FFBF2B70000-0x00007FFBF3631000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads