xworm | 36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 13:19

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General

Target
36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe
Size 73KB
Sample240604-qkhbmshd64
SHA256 36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916
MD5 d022fbf588bb1e01ede242dba15b96af
SHA1 fb1f7e900d4ce3729456917280bfdfaf93405af4
SHA512 a8724fb64c723ad40409ca50c0e4c407a27f49cd749d63db88f1f08cf8b2f3517433de81f3cb9883cacd4fbac00aa599266de99d053f43e7566e8c99db02d463
SSDEEP 1536:E7kR34xleb/oe9SEHSD6HVdcbEtuN/ogKRx6hgzjO/X778:E7kR34WrorEHu6HV6bEtuNM9PO//8
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

ads-filed.gl.at.ply.gg:59434

Attributes

Install_directory
%AppData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000518000-memory.dmp	family_xworm
behavioral2/files/0x000b00000002295f-64.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
4056	powershell.exe
3288	powershell.exe
5004	powershell.exe
4704	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	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe

Executes dropped EXE 2 IoCs

pid	Process
1740	svhost.exe
2052	svhost.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\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.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
1416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4056	powershell.exe
4056	powershell.exe
3288	powershell.exe
3288	powershell.exe
5004	powershell.exe
5004	powershell.exe
4704	powershell.exe
4704	powershell.exe
1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe
Token: SeDebugPrivilege	4056	powershell.exe
Token: SeDebugPrivilege	3288	powershell.exe
Token: SeDebugPrivilege	5004	powershell.exe
Token: SeDebugPrivilege	4704	powershell.exe
Token: SeDebugPrivilege	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe
Token: SeDebugPrivilege	1740	svhost.exe
Token: SeDebugPrivilege	2052	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1008 wrote to memory of 4056	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	88
PID 1008 wrote to memory of 4056	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	88
PID 1008 wrote to memory of 3288	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	90
PID 1008 wrote to memory of 3288	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	90
PID 1008 wrote to memory of 5004	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	92
PID 1008 wrote to memory of 5004	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	92
PID 1008 wrote to memory of 4704	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	95
PID 1008 wrote to memory of 4704	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	95
PID 1008 wrote to memory of 1416	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	97
PID 1008 wrote to memory of 1416	1008	36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe	97

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\36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe
"C:\Users\Admin\AppData\Local\Temp\36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.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:1008
- 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\36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4056
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3288
- 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\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5004
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4704
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\AppData\Roaming\svhost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1416

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1740

C:\Users\Admin\AppData\Roaming\svhost.exe
C:\Users\Admin\AppData\Roaming\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2052

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

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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svhost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svhost.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 af5782703f3f2d5a29fb313dae6680a64134db26064d4a321a3f23b75f6ca00f
MD5 e243a38635ff9a06c87c2a61a2200656
SHA1 ecd95ed5bf1a9fbe96a8448fc2814a0210fa2afc
SHA512 4418957a1b10eee44cf270c81816ae707352411c4f5ac14b6b61ab537c91480e24e0a0a2c276a6291081b4984c123cf673a45dcedb0ceeef682054ba0fc19cb4
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 bd827af3192bf83c75a32e51ed2de83bd3b90d6b99350721a189a57cec15d063
MD5 eb033be02578f9635ec47bdc1de5c3fb
SHA1 ec356bc87381354a06baa9c30e8c3ac3d30e0f6f
SHA512 4d8778503646f7016df73ff9d204760f4fe4d2b24157920ac3e5651653373975b2f2d229530143059f11b16c42822ad7963e628ad6066022ee712c17d90595ed
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 8313a191aa9d11cce868d95ac9a9b1609275bfe93131fcb6e547b985b0242fbe
MD5 a9293ef980c925abe33d940554ed8575
SHA1 9b6d85f2595f7fd4923f52b21ab7607279066969
SHA512 2003d90bb2bc89378ccaeb9c5edf76b2dfd93c80369d063e56141abb8d7fea6acee6a103874ab227bc1548437269c8e4ee5174bf482ecf3d66c38f3e0ba35d85
MD5 SHA1 SHA512

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__PSScriptPolicyTest_wqy5q3hb.ncf.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wqy5q3hb.ncf.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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svhost.exe

Path C:\Users\Admin\AppData\Roaming\svhost.exe
Size 73KB
SHA256 36c9d691e45b282a2b660e55a58c25a89961086d33b4e4415fba04352b20e916
MD5 d022fbf588bb1e01ede242dba15b96af
SHA1 fb1f7e900d4ce3729456917280bfdfaf93405af4
SHA512 a8724fb64c723ad40409ca50c0e4c407a27f49cd749d63db88f1f08cf8b2f3517433de81f3cb9883cacd4fbac00aa599266de99d053f43e7566e8c99db02d463
SSDEEP 1536:E7kR34xleb/oe9SEHSD6HVdcbEtuN/ogKRx6hgzjO/X778:E7kR34WrorEHu6HV6bEtuNM9PO//8
MD5 SHA1 SHA512 SSDEEP

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memory/1008-60-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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memory/1008-58-0x00007FF974AC3000-0x00007FF974AC5000-memory.dmp

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memory/1008-0-0x0000000000500000-0x0000000000518000-memory.dmp

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memory/1008-57-0x000000001B920000-0x000000001BA22000-memory.dmp

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memory/1008-2-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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memory/1008-1-0x00007FF974AC3000-0x00007FF974AC5000-memory.dmp

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memory/4056-12-0x00000192BBE60000-0x00000192BBE82000-memory.dmp

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memory/4056-18-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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memory/4056-15-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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memory/4056-14-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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memory/4056-13-0x00007FF974AC0000-0x00007FF975581000-memory.dmp

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