xworm | dd19ff97a15200e02ab698fe1087c4a6bfe89ac8852a057615b574bcbee961c2

General

Target

illict.gg.exe
Size

56KB
MD5

cc470d318018b2de7d43f6f17073016c
SHA1

109d25fae3c9bd01a10d816d1db1c3c93c66c7c5
SHA256

dd19ff97a15200e02ab698fe1087c4a6bfe89ac8852a057615b574bcbee961c2
SHA512

036e7528e149a81cadf2185b99b63ca481b05bd909b462a6bc8daf4ccf4279a7c5cff99dfbe6e90df0b96a041aa99c4948384e207db916b093a166e92b8fea4f
SSDEEP

1536:9j2/3YNHXwTyQl0RHskb0UlqXN+xD6QtGOxWq:xXw/8Mkb0Ux2OxWq

Score

10^/10

xworm bootkit defense_evasion discovery execution persistence rat trojan upx

Malware Config

Extracted

Family

xworm

C2

80.76.49.15:1111

Attributes

Install_directory
%AppData%
install_file
Xclient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2068-1-0x00000000001A0000-0x00000000001B4000-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
1784	powershell.exe
2700	powershell.exe
2284	powershell.exe
2768	powershell.exe

Disables RegEdit via registry modification 1 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	naqknp.exe

Disables Task Manager via registry modification
defense_evasion

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1772	naqknp.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	naqknp.exe

UPX packed file 12 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0004000000004ed7-38.dat	upx
behavioral1/memory/1772-39-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-41-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-45-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-46-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-47-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-50-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-51-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-52-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-53-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-54-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx
behavioral1/memory/1772-55-0x00000000000B0000-0x00000000001E4000-memory.dmp	upx

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	naqknp.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1784	powershell.exe
2700	powershell.exe
2284	powershell.exe
2768	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	illict.gg.exe
Token: SeDebugPrivilege	1784	powershell.exe
Token: SeDebugPrivilege	2700	powershell.exe
Token: SeDebugPrivilege	2284	powershell.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2068	illict.gg.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1784	2068	illict.gg.exe	31
PID 2068 wrote to memory of 1784	2068	illict.gg.exe	31
PID 2068 wrote to memory of 1784	2068	illict.gg.exe	31
PID 2068 wrote to memory of 2700	2068	illict.gg.exe	33
PID 2068 wrote to memory of 2700	2068	illict.gg.exe	33
PID 2068 wrote to memory of 2700	2068	illict.gg.exe	33
PID 2068 wrote to memory of 2284	2068	illict.gg.exe	35
PID 2068 wrote to memory of 2284	2068	illict.gg.exe	35
PID 2068 wrote to memory of 2284	2068	illict.gg.exe	35
PID 2068 wrote to memory of 2768	2068	illict.gg.exe	37
PID 2068 wrote to memory of 2768	2068	illict.gg.exe	37
PID 2068 wrote to memory of 2768	2068	illict.gg.exe	37
PID 2068 wrote to memory of 1772	2068	illict.gg.exe	40
PID 2068 wrote to memory of 1772	2068	illict.gg.exe	40
PID 2068 wrote to memory of 1772	2068	illict.gg.exe	40
PID 2068 wrote to memory of 1772	2068	illict.gg.exe	40

C:\Users\Admin\AppData\Local\Temp\illict.gg.exe
"C:\Users\Admin\AppData\Local\Temp\illict.gg.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068
- 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\illict.gg.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1784
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'illict.gg.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2700
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2284
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xclient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Users\Admin\AppData\Local\Temp\naqknp.exe
  "C:\Users\Admin\AppData\Local\Temp\naqknp.exe"
  2⤵
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

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\naqknp.exe

Filesize
188KB

MD5
14acdf9be02d33d3674041fb82fb1df4

SHA1
0191ae0a905df04be2771c4591d9847c15eb0fa3

SHA256
094d9b5aa73c4eee432d3b3e87b4ba55428f7a2064c5e7c79223bf7f4739ac17

SHA512
5215222472ff7049571d2e28316b0edadac18f27faef89ec6652c0de696403dbfd0f9b45a5af08012f4a96d72301790ce28787e7a3b65151e79120f8f3a2c18d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\E8WXHMTLGIWDGL8K2ZQ6.temp

Filesize
7KB

MD5
772bfd9d0ca3e5b12a5c94ca4a35123d

SHA1
1ba43bd4752b5dd09fe8fec06e13bbf0184af814

SHA256
223b3bbe364fdf056f20f3167233d7516e4f5887206712d6a54686875814f6a2

SHA512
99041d2d17e025cbb0c1a79b009a3797a61ad95e253267db1acbe9b8e90e14121ad3c2e3db97aad9e737706929c8398665df4379edfad72e11344c7c22c33ade

Download Submit
memory/1772-50-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-51-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-55-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-54-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-53-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-52-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-47-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-46-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-45-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-41-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1772-39-0x00000000000B0000-0x00000000001E4000-memory.dmp

Filesize
1.2MB

Download
memory/1784-8-0x0000000002960000-0x0000000002968000-memory.dmp

Filesize
32KB

Download
memory/1784-6-0x0000000002EA0000-0x0000000002F20000-memory.dmp

Filesize
512KB

Download
memory/1784-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2068-1-0x00000000001A0000-0x00000000001B4000-memory.dmp

Filesize
80KB

Download
memory/2068-33-0x000000001B340000-0x000000001B3C0000-memory.dmp

Filesize
512KB

Download
memory/2068-32-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2068-31-0x000000001B340000-0x000000001B3C0000-memory.dmp

Filesize
512KB

Download
memory/2068-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2700-15-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download
memory/2700-14-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads