xworm | 468b8816f1302c9ba57dbbcbecb610bd8be8b883671bc86c0e9ac930db1a6a87

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 17:33

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General

Target
ZoomUpdater_2.exe
Size 113KB
Sample240602-v47g4aae47
SHA256 468b8816f1302c9ba57dbbcbecb610bd8be8b883671bc86c0e9ac930db1a6a87
MD5 518e637a6266f7f22f8e7f93ebafd347
SHA1 4de00116c38ed7608f1b4a9df82d9559414dfe9c
SHA512 2d749064b9eb53d2012f971af3a13f481a003d01a80b2ad33ed311962cce03b4f0c49984c5c749572193ab548723a8613da8e21f09564236eba620c9bce86881
SSDEEP 1536:CSICiHPiv6m6uSwzfF0bUVZBy1CF6xZsWOJjIMpCZ4SWbN:CfhHCjzf2bU7G1OVIM2CB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

having-shopper.at.ply.gg:12708

Attributes

Install_directory
%ProgramData%
install_file
conhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3456-1-0x00000000007F0000-0x0000000000812000-memory.dmp	family_xworm
behavioral2/files/0x001000000002338f-58.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
2924	powershell.exe
2920	powershell.exe
2744	powershell.exe
4252	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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	ZoomUpdater_2.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\conhost.lnk	ZoomUpdater_2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\conhost.lnk	ZoomUpdater_2.exe

Executes dropped EXE 1 IoCs

pid	Process
5096	conhost.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-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\conhost = "C:\\ProgramData\\conhost.exe"	ZoomUpdater_2.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
14	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2604	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2432	timeout.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2924	powershell.exe
2924	powershell.exe
2920	powershell.exe
2920	powershell.exe
2744	powershell.exe
2744	powershell.exe
4252	powershell.exe
4252	powershell.exe
3456	ZoomUpdater_2.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3456	ZoomUpdater_2.exe
Token: SeDebugPrivilege	2924	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeDebugPrivilege	3456	ZoomUpdater_2.exe
Token: SeDebugPrivilege	5096	conhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3456	ZoomUpdater_2.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3456 wrote to memory of 2924	3456	ZoomUpdater_2.exe	88
PID 3456 wrote to memory of 2924	3456	ZoomUpdater_2.exe	88
PID 3456 wrote to memory of 2920	3456	ZoomUpdater_2.exe	90
PID 3456 wrote to memory of 2920	3456	ZoomUpdater_2.exe	90
PID 3456 wrote to memory of 2744	3456	ZoomUpdater_2.exe	92
PID 3456 wrote to memory of 2744	3456	ZoomUpdater_2.exe	92
PID 3456 wrote to memory of 4252	3456	ZoomUpdater_2.exe	94
PID 3456 wrote to memory of 4252	3456	ZoomUpdater_2.exe	94
PID 3456 wrote to memory of 2604	3456	ZoomUpdater_2.exe	97
PID 3456 wrote to memory of 2604	3456	ZoomUpdater_2.exe	97
PID 3456 wrote to memory of 5008	3456	ZoomUpdater_2.exe	103
PID 3456 wrote to memory of 5008	3456	ZoomUpdater_2.exe	103
PID 3456 wrote to memory of 4136	3456	ZoomUpdater_2.exe	105
PID 3456 wrote to memory of 4136	3456	ZoomUpdater_2.exe	105
PID 4136 wrote to memory of 2432	4136	cmd.exe	107
PID 4136 wrote to memory of 2432	4136	cmd.exe	107

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\ZoomUpdater_2.exe
"C:\Users\Admin\AppData\Local\Temp\ZoomUpdater_2.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3456
- 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\ZoomUpdater_2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ZoomUpdater_2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\conhost.exe'
  2⤵
  - 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 'conhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4252
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "conhost" /tr "C:\ProgramData\conhost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2604
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "conhost"
  2⤵
  PID:5008
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF5E9.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4136
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2432

C:\ProgramData\conhost.exe
C:\ProgramData\conhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

conhost.exe

Path C:\ProgramData\conhost.exe
Size 113KB
SHA256 468b8816f1302c9ba57dbbcbecb610bd8be8b883671bc86c0e9ac930db1a6a87
MD5 518e637a6266f7f22f8e7f93ebafd347
SHA1 4de00116c38ed7608f1b4a9df82d9559414dfe9c
SHA512 2d749064b9eb53d2012f971af3a13f481a003d01a80b2ad33ed311962cce03b4f0c49984c5c749572193ab548723a8613da8e21f09564236eba620c9bce86881
SSDEEP 1536:CSICiHPiv6m6uSwzfF0bUVZBy1CF6xZsWOJjIMpCZ4SWbN:CfhHCjzf2bU7G1OVIM2CB
MD5 SHA1 SHA512 SSDEEP

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powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 37d064cd6a6469cac2eef31de8bfaa0da16919069eccf340fb9f2c6e17d4696f
MD5 262251a2b99662e7ebd6e191568efb8c
SHA1 1e99f041254c20c702321ffd8b605be4a30d4587
SHA512 6b36f8120ec1ca5a656d7e068a613d6550413e4556dbbc088c108b217f11879386134face82ff11234a023324080d4f32e39ba7e6194257e2ebdb52985d6210f
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1
MD5 ba169f4dcbbf147fe78ef0061a95e83b
SHA1 92a571a6eef49fff666e0f62a3545bcd1cdcda67
SHA512 8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c
MD5 SHA1 SHA512

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__PSScriptPolicyTest_t2lahrwz.egt.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t2lahrwz.egt.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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tmpF5E9.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpF5E9.tmp.bat
Size 165B
SHA256 b0ec1075ab3eb9aec83f914110c84f4b003cf9597a9f64e41e3f2269cdd87799
MD5 1e7c603d7524840c337fe67dd778e944
SHA1 c2e2435bf1956432b7d3c142328cd2baec68afbc
SHA512 c8247df27087e342f0d8a0b0455315a5c8f92492bf11c3fbf6d234bfc7f6b2f6fc00d2080f7259392f7881de733889d02d523813cce982818c1a83846631043d
MD5 SHA1 SHA512

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memory/2924-13-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/2924-16-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/2924-19-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/2924-15-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/2924-14-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/2924-8-0x00000246F1700000-0x00000246F1722000-memory.dmp

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memory/3456-0-0x00007FF9A0683000-0x00007FF9A0685000-memory.dmp

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memory/3456-2-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/3456-61-0x00007FF9A0683000-0x00007FF9A0685000-memory.dmp

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memory/3456-62-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/3456-63-0x000000001B470000-0x000000001B47C000-memory.dmp

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memory/3456-69-0x00007FF9A0680000-0x00007FF9A1141000-memory.dmp

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memory/3456-1-0x00000000007F0000-0x0000000000812000-memory.dmp

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