xworm | 29774f3e9e2de12c7441f765f340cd661c38de279922961fc69488e2feffe67c

General

Target

ExcellentDll.exe
Size

345KB
MD5

69f478046e3ef37a710a452f796c9ef9
SHA1

f577229b18661c30938b8dd158019370be32c1d1
SHA256

29774f3e9e2de12c7441f765f340cd661c38de279922961fc69488e2feffe67c
SHA512

ee8994cd121e7437d9affc77988852a71895d92aea268517adeb8bf62fc7b532ea507a03ddc05f9a449e5729201d908690f3a9ac5350832d5c7c01328257eea8
SSDEEP

6144:Q0mluu8NPetOlmfMYdTQJzLtxfg6vgR6TNX5vcQY2MRcViNpqbCtULop+mG:Cou80CKQBxfPvgR6TVcLsiNpqmwok5

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

cameras-happen.gl.at.ply.gg:23386

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0063000000011c27-3.dat	family_xworm
behavioral1/memory/2980-14-0x0000000000D00000-0x0000000000D1A000-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
2932	powershell.exe
2644	powershell.exe
1780	powershell.exe
2336	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2980	ExcellentFree.exe
2860	ExLoader.exe

Loads dropped DLL 2 IoCs

pid	Process
2716	ExcellentDll.exe
2716	ExcellentDll.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	ExcellentFree.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ExcellentDll.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2932	powershell.exe
2644	powershell.exe
1780	powershell.exe
2336	powershell.exe
2980	ExcellentFree.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2980	ExcellentFree.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2644	powershell.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	2336	powershell.exe
Token: SeDebugPrivilege	2980	ExcellentFree.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2980	ExcellentFree.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 2980	2716	ExcellentDll.exe	30
PID 2716 wrote to memory of 2980	2716	ExcellentDll.exe	30
PID 2716 wrote to memory of 2980	2716	ExcellentDll.exe	30
PID 2716 wrote to memory of 2980	2716	ExcellentDll.exe	30
PID 2716 wrote to memory of 2860	2716	ExcellentDll.exe	31
PID 2716 wrote to memory of 2860	2716	ExcellentDll.exe	31
PID 2716 wrote to memory of 2860	2716	ExcellentDll.exe	31
PID 2716 wrote to memory of 2860	2716	ExcellentDll.exe	31
PID 2980 wrote to memory of 2932	2980	ExcellentFree.exe	32
PID 2980 wrote to memory of 2932	2980	ExcellentFree.exe	32
PID 2980 wrote to memory of 2932	2980	ExcellentFree.exe	32
PID 2980 wrote to memory of 2644	2980	ExcellentFree.exe	34
PID 2980 wrote to memory of 2644	2980	ExcellentFree.exe	34
PID 2980 wrote to memory of 2644	2980	ExcellentFree.exe	34
PID 2980 wrote to memory of 1780	2980	ExcellentFree.exe	36
PID 2980 wrote to memory of 1780	2980	ExcellentFree.exe	36
PID 2980 wrote to memory of 1780	2980	ExcellentFree.exe	36
PID 2980 wrote to memory of 2336	2980	ExcellentFree.exe	38
PID 2980 wrote to memory of 2336	2980	ExcellentFree.exe	38
PID 2980 wrote to memory of 2336	2980	ExcellentFree.exe	38

C:\Users\Admin\AppData\Local\Temp\ExcellentDll.exe
"C:\Users\Admin\AppData\Local\Temp\ExcellentDll.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Users\Admin\AppData\Local\Temp\ExcellentFree.exe
  "C:\Users\Admin\AppData\Local\Temp\ExcellentFree.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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\ExcellentFree.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ExcellentFree.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2644
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1780
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2336
- C:\Users\Admin\AppData\Local\Temp\ExLoader.exe
  "C:\Users\Admin\AppData\Local\Temp\ExLoader.exe"
  2⤵
  - Executes dropped EXE
  PID:2860

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ExLoader.exe

Filesize
374KB

MD5
4183f8ec375a90742d38b1d69d136f92

SHA1
a630ecdb41aaa0982fad2775dd6114d20a5e0081

SHA256
ec8c87c21a99ec03772008304fe1a8a3261aa0beecafa7066c456069b66a33c6

SHA512
5c23e9cfdadb4de5d57130d6fead4b072ee3034554d8ba17b0d8935eac75f8986f9648ca225ea3c10757fe888cc049634872ee0278953906a735f5242d8ac060

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c13e31a4f131af1d271edb92905d388c

SHA1
50b8790223621454c4658be8ce88a12aadd147ab

SHA256
bab927a1f7d9dd42b8fa2bc180f4a6b1ccf7ce5b2300d582bb8d441519045010

SHA512
9e9fa356733cbe0e141700d7e6f1bc19e2dcd32854f094ff9aeccec07a7bfe43b5301d474125fcd04f047990cfe7a8a28092ac9d014999c47e3268baa001787a

Download Submit
\Users\Admin\AppData\Local\Temp\ExcellentFree.exe

Filesize
76KB

MD5
8cc568f48114422b0ca792dc8ce6009a

SHA1
bbe67dabd894ac2e45dc8027c6e3000f73ec97d7

SHA256
7a3d86182ae45a6be17ef36d1f12463b398c165a7e6fe4aa80e56ceab7f036eb

SHA512
45fe66a17c0473c0a4967d501d6f28f7a41fdce03ec31c46fb11ffd5fd848493578effbc36b4247ae49b987c41c3a559a9185dfdd0fd42468f30c310bea7bcc4

Download Submit
memory/2644-28-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2644-27-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2932-21-0x0000000002970000-0x0000000002978000-memory.dmp

Filesize
32KB

Download
memory/2932-20-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2980-15-0x000007FEF66F3000-0x000007FEF66F4000-memory.dmp

Filesize
4KB

Download
memory/2980-14-0x0000000000D00000-0x0000000000D1A000-memory.dmp

Filesize
104KB

Download
memory/2980-13-0x000007FEF66F3000-0x000007FEF66F4000-memory.dmp

Filesize
4KB

Download
memory/2980-44-0x000007FEF66F0000-0x000007FEF70DC000-memory.dmp

Filesize
9.9MB

Download
memory/2980-45-0x000007FEF66F0000-0x000007FEF70DC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads