xworm | 4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 18:19

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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 3 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012118-18.dat	family_xworm
behavioral1/memory/2064-21-0x0000000000100000-0x000000000011A000-memory.dmp	family_xworm
behavioral1/memory/2436-53-0x00000000012F0000-0x000000000130A000-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
2744	powershell.exe
2748	powershell.exe
2784	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smsB6B2.lnk	smsB6B2.tmp
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smsB6B2.lnk	smsB6B2.tmp

Executes dropped EXE 3 IoCs

pid	Process
2064	smsB6B2.tmp
2436	smsB6B2.tmp
1340	smsB6B2.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\smsB6B2 = "C:\\Users\\Admin\\AppData\\Roaming\\smsB6B2.tmp"	smsB6B2.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 1692 set thread context of 1136	1692	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	smsB6B2.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	smsB6B2.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
1500	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2744	powershell.exe
2748	powershell.exe
2784	powershell.exe
2064	smsB6B2.tmp

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2064	smsB6B2.tmp
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2064	smsB6B2.tmp
Token: SeDebugPrivilege	2436	smsB6B2.tmp
Token: SeDebugPrivilege	1340	smsB6B2.tmp

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2064	smsB6B2.tmp

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1692 wrote to memory of 1136	1692	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	31
PID 1136 wrote to memory of 2064	1136	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 1136 wrote to memory of 2064	1136	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 1136 wrote to memory of 2064	1136	4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe	32
PID 2064 wrote to memory of 2744	2064	smsB6B2.tmp	34
PID 2064 wrote to memory of 2744	2064	smsB6B2.tmp	34
PID 2064 wrote to memory of 2744	2064	smsB6B2.tmp	34
PID 2064 wrote to memory of 2748	2064	smsB6B2.tmp	36
PID 2064 wrote to memory of 2748	2064	smsB6B2.tmp	36
PID 2064 wrote to memory of 2748	2064	smsB6B2.tmp	36
PID 2064 wrote to memory of 2784	2064	smsB6B2.tmp	39
PID 2064 wrote to memory of 2784	2064	smsB6B2.tmp	39
PID 2064 wrote to memory of 2784	2064	smsB6B2.tmp	39
PID 2064 wrote to memory of 1500	2064	smsB6B2.tmp	41
PID 2064 wrote to memory of 1500	2064	smsB6B2.tmp	41
PID 2064 wrote to memory of 1500	2064	smsB6B2.tmp	41
PID 1988 wrote to memory of 2436	1988	taskeng.exe	44
PID 1988 wrote to memory of 2436	1988	taskeng.exe	44
PID 1988 wrote to memory of 2436	1988	taskeng.exe	44
PID 1988 wrote to memory of 1340	1988	taskeng.exe	45
PID 1988 wrote to memory of 1340	1988	taskeng.exe	45
PID 1988 wrote to memory of 1340	1988	taskeng.exe	45

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:1692
- C:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe
  "C:\Users\Admin\AppData\Local\Temp\4560c263255a3f4682b69a3e989591ee4b4df60a8a7680a3905c0c7b33a83d42.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1136
- - C:\Users\Admin\AppData\Local\Temp\smsB6B2.tmp
    "C:\Users\Admin\AppData\Local\Temp\smsB6B2.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:2064
  - - 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\smsB6B2.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2744
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'smsB6B2.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2748
  - - 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\smsB6B2.tmp'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2784
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "smsB6B2" /tr "C:\Users\Admin\AppData\Roaming\smsB6B2.tmp"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1500

C:\Windows\system32\taskeng.exe
taskeng.exe {1FF97EAA-531D-4070-926A-A9DF228FC332} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Roaming\smsB6B2.tmp
  C:\Users\Admin\AppData\Roaming\smsB6B2.tmp
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2436
- C:\Users\Admin\AppData\Roaming\smsB6B2.tmp
  C:\Users\Admin\AppData\Roaming\smsB6B2.tmp
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1340

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\smsB6B2.tmp

Filesize
77KB

MD5
8032a5e68376a879472c297749cdb4c4

SHA1
d6a96c5287f1d76b41f605ecaeb1688d208c720a

SHA256
fa3dd88248218cd597232333c70e0996801817b003c234994102452712a23d1d

SHA512
b75d6429844e643fc7920efe1d30b15b0e631ded561f5f0021e105a68a729ebf308a23501c9136efbf4637bb068dba5c0056ff85195cd54d56e05205193d6c21

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

Filesize
7KB

MD5
7ec9a2121333e9793fa22f7d192ab8e0

SHA1
83af617f0b3bca034b19e0b8a21cce94a0979e1d

SHA256
5767105fac6096d3e506e87a1ca761d7053d72468d90e21f5462a559e01b801f

SHA512
5fc7415bb20f2f68adbf50b9ce126567884376b9d2449b510fd6719f72606d3464b762c55831c9e5252243798a095d6b1d8c2877bc9f7107447e53e4f856abe6

Download Submit
memory/1136-7-0x000007FFFFFD9000-0x000007FFFFFDA000-memory.dmp

Filesize
4KB

Download
memory/1136-14-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-8-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-0-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-5-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-4-0x000007FFFFFD9000-0x000007FFFFFDA000-memory.dmp

Filesize
4KB

Download
memory/1136-2-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-15-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1136-11-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1692-12-0x000000013F840000-0x000000013F86A000-memory.dmp

Filesize
168KB

Download
memory/2064-20-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/2064-22-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2064-21-0x0000000000100000-0x000000000011A000-memory.dmp

Filesize
104KB

Download
memory/2064-42-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/2064-49-0x000007FEF4FD0000-0x000007FEF59BC000-memory.dmp

Filesize
9.9MB

Download
memory/2436-53-0x00000000012F0000-0x000000000130A000-memory.dmp

Filesize
104KB

Download
memory/2744-27-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2744-28-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/2748-34-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2748-35-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download