xworm | 995b076987f2c8c9217c04b52f4a618dd317d5d5415b3898ba107d12a8e9522d

Resubmissions

19-01-2025 17:36

250119-v6zj9sykbs 10

19-01-2025 17:36

250119-v6jh2syngr 10

19-01-2025 16:37

250119-t5adbawrcp 10

Analysis

max time kernel
32s
max time network
38s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
19-01-2025 17:36

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General

Target

Nerest soft.rar
Size

10.7MB
MD5

36a311bd68a15d33cf34f2d5a379f575
SHA1

436e425d3a8c52871da0bead8a0935a5c82bb160
SHA256

995b076987f2c8c9217c04b52f4a618dd317d5d5415b3898ba107d12a8e9522d
SHA512

e683aff0d6c77ba47de449f04062c41ad7e30b00768c6d8508f584ead812edd2d0ae4e9d938b8532898ff8f9902676b1163bd387546db6435fb5d19c072a0e08
SSDEEP

196608:x8dOjq6AUN3CFaLgkag0igtXbShm+PH/b1D7Xo0YwYpfn+aA7aPUP/e428iXdC:WT1UN3FLth03Xuhm+PTVN1Yd+b7aPWsk

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

back-spots.gl.at.ply.gg:21395

Attributes

Install_directory
%Temp%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x002800000004611e-4.dat	family_xworm
behavioral1/memory/4052-16-0x0000000000360000-0x0000000000386000-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
4412	powershell.exe
4744	powershell.exe
4880	powershell.exe
2792	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3982764349-3037452555-3708423086-1000\Control Panel\International\Geo\Nation	!LOADER.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4052	!LOADER.exe
2412	adb.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-1-5-21-3982764349-3037452555-3708423086-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\conhost"	!LOADER.exe

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
11	ip-api.com

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	adb.exe

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
3360	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4412	powershell.exe
4412	powershell.exe
4744	powershell.exe
4744	powershell.exe
4880	powershell.exe
4880	powershell.exe
2792	powershell.exe
2792	powershell.exe
1172	7zFM.exe
1172	7zFM.exe
4052	!LOADER.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1172	7zFM.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeRestorePrivilege	1172	7zFM.exe
Token: 35	1172	7zFM.exe
Token: SeSecurityPrivilege	1172	7zFM.exe
Token: SeDebugPrivilege	4052	!LOADER.exe
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeSecurityPrivilege	1172	7zFM.exe
Token: SeIncreaseQuotaPrivilege	4412	powershell.exe
Token: SeSecurityPrivilege	4412	powershell.exe
Token: SeTakeOwnershipPrivilege	4412	powershell.exe
Token: SeLoadDriverPrivilege	4412	powershell.exe
Token: SeSystemProfilePrivilege	4412	powershell.exe
Token: SeSystemtimePrivilege	4412	powershell.exe
Token: SeProfSingleProcessPrivilege	4412	powershell.exe
Token: SeIncBasePriorityPrivilege	4412	powershell.exe
Token: SeCreatePagefilePrivilege	4412	powershell.exe
Token: SeBackupPrivilege	4412	powershell.exe
Token: SeRestorePrivilege	4412	powershell.exe
Token: SeShutdownPrivilege	4412	powershell.exe
Token: SeDebugPrivilege	4412	powershell.exe
Token: SeSystemEnvironmentPrivilege	4412	powershell.exe
Token: SeRemoteShutdownPrivilege	4412	powershell.exe
Token: SeUndockPrivilege	4412	powershell.exe
Token: SeManageVolumePrivilege	4412	powershell.exe
Token: 33	4412	powershell.exe
Token: 34	4412	powershell.exe
Token: 35	4412	powershell.exe
Token: 36	4412	powershell.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeIncreaseQuotaPrivilege	4744	powershell.exe
Token: SeSecurityPrivilege	4744	powershell.exe
Token: SeTakeOwnershipPrivilege	4744	powershell.exe
Token: SeLoadDriverPrivilege	4744	powershell.exe
Token: SeSystemProfilePrivilege	4744	powershell.exe
Token: SeSystemtimePrivilege	4744	powershell.exe
Token: SeProfSingleProcessPrivilege	4744	powershell.exe
Token: SeIncBasePriorityPrivilege	4744	powershell.exe
Token: SeCreatePagefilePrivilege	4744	powershell.exe
Token: SeBackupPrivilege	4744	powershell.exe
Token: SeRestorePrivilege	4744	powershell.exe
Token: SeShutdownPrivilege	4744	powershell.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeSystemEnvironmentPrivilege	4744	powershell.exe
Token: SeRemoteShutdownPrivilege	4744	powershell.exe
Token: SeUndockPrivilege	4744	powershell.exe
Token: SeManageVolumePrivilege	4744	powershell.exe
Token: 33	4744	powershell.exe
Token: 34	4744	powershell.exe
Token: 35	4744	powershell.exe
Token: 36	4744	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeIncreaseQuotaPrivilege	4880	powershell.exe
Token: SeSecurityPrivilege	4880	powershell.exe
Token: SeTakeOwnershipPrivilege	4880	powershell.exe
Token: SeLoadDriverPrivilege	4880	powershell.exe
Token: SeSystemProfilePrivilege	4880	powershell.exe
Token: SeSystemtimePrivilege	4880	powershell.exe
Token: SeProfSingleProcessPrivilege	4880	powershell.exe
Token: SeIncBasePriorityPrivilege	4880	powershell.exe
Token: SeCreatePagefilePrivilege	4880	powershell.exe
Token: SeBackupPrivilege	4880	powershell.exe
Token: SeRestorePrivilege	4880	powershell.exe
Token: SeShutdownPrivilege	4880	powershell.exe
Token: SeDebugPrivilege	4880	powershell.exe
Token: SeSystemEnvironmentPrivilege	4880	powershell.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1172	7zFM.exe
1172	7zFM.exe
1172	7zFM.exe
1172	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4052	!LOADER.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 4052	1172	7zFM.exe	81
PID 1172 wrote to memory of 4052	1172	7zFM.exe	81
PID 4052 wrote to memory of 4412	4052	!LOADER.exe	84
PID 4052 wrote to memory of 4412	4052	!LOADER.exe	84
PID 1172 wrote to memory of 2412	1172	7zFM.exe	86
PID 1172 wrote to memory of 2412	1172	7zFM.exe	86
PID 1172 wrote to memory of 2412	1172	7zFM.exe	86
PID 4052 wrote to memory of 4744	4052	!LOADER.exe	89
PID 4052 wrote to memory of 4744	4052	!LOADER.exe	89
PID 4052 wrote to memory of 4880	4052	!LOADER.exe	91
PID 4052 wrote to memory of 4880	4052	!LOADER.exe	91
PID 4052 wrote to memory of 2792	4052	!LOADER.exe	93
PID 4052 wrote to memory of 2792	4052	!LOADER.exe	93
PID 4052 wrote to memory of 3360	4052	!LOADER.exe	95
PID 4052 wrote to memory of 3360	4052	!LOADER.exe	95

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:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Nerest soft.rar"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\7zO494A6897\!LOADER.exe
  "C:\Users\Admin\AppData\Local\Temp\7zO494A6897\!LOADER.exe"
  2⤵
  - Checks computer location settings
  - 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:4052
- - 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\7zO494A6897\!LOADER.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4412
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '!LOADER.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4744
- - 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\conhost'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4880
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'conhost'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:2792
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "conhost" /tr "C:\Users\Admin\AppData\Local\Temp\conhost"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3360
- C:\Users\Admin\AppData\Local\Temp\7zO494285B7\adb.exe
  "C:\Users\Admin\AppData\Local\Temp\7zO494285B7\adb.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2412

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

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
55dc3654b64b002c93957d577fb6dae2

SHA1
c5e23ce5f6e4c7ddfd1b0be12b484467a8a97abd

SHA256
f7193a3163f0d010db9dd3ebfd137110e8f92c0575ba48c2a64aa04f9628e3f5

SHA512
427d3052518f622d83f71a0f15a17af37dcea57fbbe87a49acde325acb12c95067f2d9e7211a3040192e5fddebeee5ccc51723c48eed4c8e882f6e3cd1e06e49

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
1b89ee80a1f26bb24d8426ea49793386

SHA1
4e437a062a9e42093c1e2974e90ed504caaacb0a

SHA256
e9a2a6d07b926a04924cc5ee3b8d712b98a0bcd2ee053aafb6563ebddfd3630a

SHA512
bacea03a096d4c6cae5ca67bb4043bb330c33d4c3b6880575d599c17ded9b8c517586814212d1881decc89cc71d721e3bceedd2a9cf0b9dc81ff69e07d65174a

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO494285B7\adb.exe

Filesize
5.6MB

MD5
f1f479bba21298e758fc22d8d98f8e48

SHA1
2f7ef0bf7a9ca33da621ba29794ae9c8c95c0bca

SHA256
705ddc21f33ac52105d1b075b019962ad0e44fb3d560bde69ce8cb3a36bca183

SHA512
3b491cd07e1e05e14fcec13956e8c023a4f2bbcb9459f3965868a00e33bc4d7e258ac645da9f1b5ca6f9d9a757b879d696ab95800a03240b37aa42265d4e914f

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zO494A6897\!LOADER.exe

Filesize
125KB

MD5
0324d4d7ff2026809d8c3f4bd0f3573e

SHA1
73f39a2778bbaa29246a75a7274b8bc7836bd329

SHA256
e14dbac690979b4fa9b2fee4a8221bfdcb03500458d3f9c8912fa1e0e4674492

SHA512
0209d6abb503a2698ee3bb8393da8b7622c3f6318f7aff8173a2406abc31d5d422002ab47113a85e2b7dc292d6735c23fd083aa1c1de4dd275a6e0f28e091f6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jh5phv1v.kba.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4052-17-0x00007FFCEF120000-0x00007FFCEFBE2000-memory.dmp

Filesize
10.8MB

Download
memory/4052-16-0x0000000000360000-0x0000000000386000-memory.dmp

Filesize
152KB

Download
memory/4052-15-0x00007FFCEF123000-0x00007FFCEF125000-memory.dmp

Filesize
8KB

Download
memory/4052-76-0x00007FFCEF123000-0x00007FFCEF125000-memory.dmp

Filesize
8KB

Download
memory/4052-82-0x00007FFCEF120000-0x00007FFCEFBE2000-memory.dmp

Filesize
10.8MB

Download
memory/4412-27-0x0000020BC5A80000-0x0000020BC5AA2000-memory.dmp

Filesize
136KB

Download