xworm | 710eaf9862498e7ef2b2024783336c69bdb489ddc0b7028af6cc8510d19a733d

General

Target

newtt.pdf.exe
Size

972KB
MD5

0897304e5e056318413b793477142018
SHA1

09299856fae087ac29d25cea697d974858a77796
SHA256

8999a5fbe146e6183a2bffaae420236be218f3de96342e67642af88b2847b480
SHA512

90258358ec5bae8dc594b4521ecae40b17fd0e48749a6991eb0a461db1d47d4e415482ef911b3a15cfd96a4722a0441c3701dd40d4f805cd64dce9098fe8a8d9
SSDEEP

24576:cu6J33O0c+JY5UZ+XC0kGso6FaP3pRbWY:Gu0c++OCvkGs9FavOY

Score

10^/10

Malware Config

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2388-22-0x0000000000090000-0x00000000000A0000-memory.dmp	family_xworm
behavioral1/memory/2388-31-0x0000000000090000-0x00000000000A0000-memory.dmp	family_xworm
behavioral1/memory/2388-28-0x0000000000090000-0x00000000000A0000-memory.dmp	family_xworm
behavioral1/memory/2388-24-0x0000000000090000-0x00000000000A0000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Drops startup file 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2800	Keily.exe

Loads dropped DLL 2 IoCs

pid	Process
2648	newtt.pdf.exe
2388	RegSvcs.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	RegSvcs.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0007000000018c1a-8.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 2388	2800	Keily.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	newtt.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Keily.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2388	RegSvcs.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2800	Keily.exe
2800	Keily.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2388	RegSvcs.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2648	newtt.pdf.exe
2648	newtt.pdf.exe
2800	Keily.exe
2800	Keily.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
2648	newtt.pdf.exe
2648	newtt.pdf.exe
2800	Keily.exe
2800	Keily.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2388	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2800	2648	newtt.pdf.exe	30
PID 2648 wrote to memory of 2800	2648	newtt.pdf.exe	30
PID 2648 wrote to memory of 2800	2648	newtt.pdf.exe	30
PID 2648 wrote to memory of 2800	2648	newtt.pdf.exe	30
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31
PID 2800 wrote to memory of 2388	2800	Keily.exe	31

C:\Users\Admin\AppData\Local\Temp\newtt.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\newtt.pdf.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2648
- C:\Users\Admin\AppData\Local\ageless\Keily.exe
  "C:\Users\Admin\AppData\Local\Temp\newtt.pdf.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\newtt.pdf.exe"
    3⤵
    - Drops startup file
    - Loads dropped DLL
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\ageless\Keily.exe

Filesize
972KB

MD5
0897304e5e056318413b793477142018

SHA1
09299856fae087ac29d25cea697d974858a77796

SHA256
8999a5fbe146e6183a2bffaae420236be218f3de96342e67642af88b2847b480

SHA512
90258358ec5bae8dc594b4521ecae40b17fd0e48749a6991eb0a461db1d47d4e415482ef911b3a15cfd96a4722a0441c3701dd40d4f805cd64dce9098fe8a8d9

Download Submit
\Users\Admin\AppData\Roaming\XClient.exe

Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/2388-28-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download
memory/2388-22-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download
memory/2388-31-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download
memory/2388-24-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download
memory/2388-32-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2388-38-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2388-39-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2388-40-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2648-6-0x00000000007B0000-0x0000000000BB0000-memory.dmp

Filesize
4.0MB

Download
memory/2800-20-0x0000000001010000-0x0000000001410000-memory.dmp

Filesize
4.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads