xworm | 12dc0a56caae75015dfee9c04bb256ae494341aab3e2f8456e028564695c9c97

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19/11/2024, 01:14

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General

Target

4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe
Size

116KB
MD5

4f0c8a81138b78a1f40ef1d383632130
SHA1

96b6c6ff5c5b1aa90014e975bb851d23acbed598
SHA256

4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42
SHA512

687dddf2a070acbb5eee3af912dc1461968a67b05992f76f5a77a5bb0d773ae1049c7e44386c4a44d5971ace7784a8601c2fc3f47f1f8dbbb06a7e04646bbf1c
SSDEEP

3072:oziOToQz31V4b1pCoLd7H7dwsIc6rmGBLYdLrfncO:+ToQzFjox7bCs5WmGVYVrfn

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

left-noon.gl.at.ply.gg:60705

Attributes

Install_directory
%AppData%
install_file
US11B.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000122d0-18.dat	family_xworm
behavioral1/memory/2216-21-0x0000000000A20000-0x0000000000A3A000-memory.dmp	family_xworm
behavioral1/memory/2040-53-0x00000000012A0000-0x00000000012BA000-memory.dmp	family_xworm
behavioral1/memory/1164-56-0x0000000001310000-0x000000000132A000-memory.dmp	family_xworm
behavioral1/memory/780-58-0x00000000013B0000-0x00000000013CA000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2868	powershell.exe
1444	powershell.exe
2584	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smsD079.lnk	smsD079.tmp
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smsD079.lnk	smsD079.tmp

Executes dropped EXE 4 IoCs

pid	Process
2216	smsD079.tmp
2040	smsD079.tmp
1164	smsD079.tmp
780	smsD079.tmp

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\smsD079 = "C:\\Users\\Admin\\AppData\\Roaming\\smsD079.tmp"	smsD079.tmp

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2336 set thread context of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31

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

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	smsD079.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	smsD079.tmp

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
2728	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2868	powershell.exe
1444	powershell.exe
2584	powershell.exe
2216	smsD079.tmp

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	smsD079.tmp
Token: SeDebugPrivilege	2868	powershell.exe
Token: SeDebugPrivilege	1444	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2216	smsD079.tmp
Token: SeDebugPrivilege	2040	smsD079.tmp
Token: SeDebugPrivilege	1164	smsD079.tmp
Token: SeDebugPrivilege	780	smsD079.tmp

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2216	smsD079.tmp

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2336 wrote to memory of 2364	2336	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 2364 wrote to memory of 2216	2364	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 2364 wrote to memory of 2216	2364	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 2364 wrote to memory of 2216	2364	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 2216 wrote to memory of 2868	2216	smsD079.tmp	35
PID 2216 wrote to memory of 2868	2216	smsD079.tmp	35
PID 2216 wrote to memory of 2868	2216	smsD079.tmp	35
PID 2216 wrote to memory of 1444	2216	smsD079.tmp	37
PID 2216 wrote to memory of 1444	2216	smsD079.tmp	37
PID 2216 wrote to memory of 1444	2216	smsD079.tmp	37
PID 2216 wrote to memory of 2584	2216	smsD079.tmp	39
PID 2216 wrote to memory of 2584	2216	smsD079.tmp	39
PID 2216 wrote to memory of 2584	2216	smsD079.tmp	39
PID 2216 wrote to memory of 2728	2216	smsD079.tmp	41
PID 2216 wrote to memory of 2728	2216	smsD079.tmp	41
PID 2216 wrote to memory of 2728	2216	smsD079.tmp	41
PID 2032 wrote to memory of 2040	2032	taskeng.exe	44
PID 2032 wrote to memory of 2040	2032	taskeng.exe	44
PID 2032 wrote to memory of 2040	2032	taskeng.exe	44
PID 2032 wrote to memory of 1164	2032	taskeng.exe	45
PID 2032 wrote to memory of 1164	2032	taskeng.exe	45
PID 2032 wrote to memory of 1164	2032	taskeng.exe	45
PID 2032 wrote to memory of 780	2032	taskeng.exe	46
PID 2032 wrote to memory of 780	2032	taskeng.exe	46
PID 2032 wrote to memory of 780	2032	taskeng.exe	46

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:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe
"C:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe
  "C:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Users\Admin\AppData\Local\Temp\smsD079.tmp
    "C:\Users\Admin\AppData\Local\Temp\smsD079.tmp"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Modifies system certificate store
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2216
  - - 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\smsD079.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2868
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'smsD079.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1444
  - - 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\smsD079.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2584
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "smsD079" /tr "C:\Users\Admin\AppData\Roaming\smsD079.tmp"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2728

C:\Windows\system32\taskeng.exe
taskeng.exe {95A93214-911E-4831-943A-C23BF598895B} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Users\Admin\AppData\Roaming\smsD079.tmp
  C:\Users\Admin\AppData\Roaming\smsD079.tmp
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2040
- C:\Users\Admin\AppData\Roaming\smsD079.tmp
  C:\Users\Admin\AppData\Roaming\smsD079.tmp
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1164
- C:\Users\Admin\AppData\Roaming\smsD079.tmp
  C:\Users\Admin\AppData\Roaming\smsD079.tmp
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\smsD079.tmp

Filesize
77KB

MD5
8032a5e68376a879472c297749cdb4c4

SHA1
d6a96c5287f1d76b41f605ecaeb1688d208c720a

SHA256
fa3dd88248218cd597232333c70e0996801817b003c234994102452712a23d1d

SHA512
b75d6429844e643fc7920efe1d30b15b0e631ded561f5f0021e105a68a729ebf308a23501c9136efbf4637bb068dba5c0056ff85195cd54d56e05205193d6c21

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ZRIZ55VX46SIPMRSNC4T.temp

Filesize
7KB

MD5
670dea76b667291acaa1a757332c005d

SHA1
d5bfe092815d112c64eef3bec963146b487c7806

SHA256
7c963706d34043c7925be006a05c69bec76f8d1b7493141757f27896f5a5f750

SHA512
caf8638f10ea09032023f0534306b17576feb64b1caf3731b2fc4127519bed12bd7dc19f3c50e258c1cd1ddfdb36883b12f0bc60368a76f5d536779147a1c68d

Download Submit
memory/780-58-0x00000000013B0000-0x00000000013CA000-memory.dmp

Filesize
104KB

Download
memory/1164-56-0x0000000001310000-0x000000000132A000-memory.dmp

Filesize
104KB

Download
memory/1444-34-0x000000001B780000-0x000000001BA62000-memory.dmp

Filesize
2.9MB

Download
memory/1444-35-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/2040-53-0x00000000012A0000-0x00000000012BA000-memory.dmp

Filesize
104KB

Download
memory/2216-21-0x0000000000A20000-0x0000000000A3A000-memory.dmp

Filesize
104KB

Download
memory/2216-22-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2216-49-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2216-20-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

Filesize
4KB

Download
memory/2216-45-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

Filesize
4KB

Download
memory/2336-14-0x000000013FBF0000-0x000000013FC1A000-memory.dmp

Filesize
168KB

Download
memory/2364-11-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-5-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-7-0x000007FFFFFD7000-0x000007FFFFFD8000-memory.dmp

Filesize
4KB

Download
memory/2364-8-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-4-0x000007FFFFFD7000-0x000007FFFFFD8000-memory.dmp

Filesize
4KB

Download
memory/2364-0-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-13-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-2-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2364-15-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/2868-27-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2868-28-0x0000000002820000-0x0000000002828000-memory.dmp

Filesize
32KB

Download