xworm | 4e8aad0b31678291ca4b4dae74385c6a0d424b7c49a439f045573f93908a764c

Analysis

max time kernel
132s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 16:13

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General

Target
EzCrack.exe
Size 78KB
Sample240603-tn8jsadb76
SHA256 4e8aad0b31678291ca4b4dae74385c6a0d424b7c49a439f045573f93908a764c
MD5 9efc872f4f99869fd6befd84076b1f02
SHA1 6bb6931b260936082028812f079f5b4543e599e0
SHA512 cfc949b9db32db43a9f0ab9dd5c59624999c8df84aaeb953251198958a10dd744e273f560f4b16cd150c5bff1d66e6014f198ca0ea3f85e5afe189fe78e8c381
SSDEEP 1536:dRNd9tEnU5G+eiIhLK7AiVqbDoxTBH/d1Pq63FBN77OCXnG73E:drdARhLIVqbDSH/dVPN3OCXGDE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%Temp%
install_file
ApplicationFrameHost.exe
pastebin_url
https://pastebin.com/raw/gf3CpGLZ
telegram
https://api.telegram.org/bot7330774245:AAFjajgEdSRi37pBSVsgsnILKxiBDZzP_f4/sendMessage?chat_id=5561074001

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4724-1-0x00000000006F0000-0x000000000070A000-memory.dmp	family_xworm
behavioral2/files/0x000b000000022abf-60.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
3428	powershell.exe
2596	powershell.exe
3236	powershell.exe
2496	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	EzCrack.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
908	ApplicationFrameHost.exe
2300	ApplicationFrameHost.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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ApplicationFrameHost = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ApplicationFrameHost.exe"	EzCrack.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
25	pastebin.com
26	pastebin.com
38	5.tcp.eu.ngrok.io

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
22	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
4616	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3428	powershell.exe
3428	powershell.exe
2596	powershell.exe
2596	powershell.exe
3236	powershell.exe
3236	powershell.exe
2496	powershell.exe
2496	powershell.exe
4724	EzCrack.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	EzCrack.exe
Token: SeDebugPrivilege	3428	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	3236	powershell.exe
Token: SeDebugPrivilege	2496	powershell.exe
Token: SeDebugPrivilege	4724	EzCrack.exe
Token: SeDebugPrivilege	908	ApplicationFrameHost.exe
Token: SeDebugPrivilege	2300	ApplicationFrameHost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4724	EzCrack.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 3428	4724	EzCrack.exe	93
PID 4724 wrote to memory of 3428	4724	EzCrack.exe	93
PID 4724 wrote to memory of 2596	4724	EzCrack.exe	95
PID 4724 wrote to memory of 2596	4724	EzCrack.exe	95
PID 4724 wrote to memory of 3236	4724	EzCrack.exe	97
PID 4724 wrote to memory of 3236	4724	EzCrack.exe	97
PID 4724 wrote to memory of 2496	4724	EzCrack.exe	100
PID 4724 wrote to memory of 2496	4724	EzCrack.exe	100
PID 4724 wrote to memory of 4616	4724	EzCrack.exe	102
PID 4724 wrote to memory of 4616	4724	EzCrack.exe	102

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\EzCrack.exe
"C:\Users\Admin\AppData\Local\Temp\EzCrack.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:4724
- 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\EzCrack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'EzCrack.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2596
- 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\ApplicationFrameHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3236
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ApplicationFrameHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2496
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "ApplicationFrameHost" /tr "C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:4616

C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe
C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:908

C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe
C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2300

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

Web Service

T1102

Exfiltration

Impact

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Downloads

ApplicationFrameHost.exe.log

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

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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 4394552922777081d43fb523126cf176d5a676602a5435713320942034f6b3cf
MD5 35967cf5ed9a95ec4fe527dd96567a02
SHA1 6a7439c241a30ec540d5d204e02a4cbb2a464737
SHA512 419b3c336a67ef964bc166d1267cea146ed5878f98304d6e39fb9a3c0394d75693810a9ddc101cdda5e3196ad7d603df01a3260705cf9ef7cf8d4b252df01f45
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 862d25ed22075f3d1f5e8d29a3c6e050dc91e53a4dc653c3f0f7c627a12ee26c
MD5 7a451cd1316d70a65910773fee8c3a43
SHA1 d2db32d5037153dd1d94565b51b5b385817a3c3d
SHA512 60887f795036fbd6d25234c17dab4463a8a02f576ae8c07dd7b4c4ff1dba35f99b7301139ea051a7a80fdfc9e003a2f0c2dd0d444a82ecf87a3df21507332aa6
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 f688037cb0c9f9c97b3b906a6c0636c91ad1864564feb17bba4973cde361172e
MD5 3e242d3c4b39d344f66c494424020c61
SHA1 194e596f33d54482e7880e91dc05e0d247a46399
SHA512 27c1cd6d72554fdce3b960458a1a6bd3f740aa7c22a313a80b043db283a224bf390648b9e59e6bdbf48020d082d728fbde569bee4ee2a610f21d659a7b3dfa02
MD5 SHA1 SHA512

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ApplicationFrameHost.exe

Path C:\Users\Admin\AppData\Local\Temp\ApplicationFrameHost.exe
Size 78KB
SHA256 4e8aad0b31678291ca4b4dae74385c6a0d424b7c49a439f045573f93908a764c
MD5 9efc872f4f99869fd6befd84076b1f02
SHA1 6bb6931b260936082028812f079f5b4543e599e0
SHA512 cfc949b9db32db43a9f0ab9dd5c59624999c8df84aaeb953251198958a10dd744e273f560f4b16cd150c5bff1d66e6014f198ca0ea3f85e5afe189fe78e8c381
SSDEEP 1536:dRNd9tEnU5G+eiIhLK7AiVqbDoxTBH/d1Pq63FBN77OCXnG73E:drdARhLIVqbDSH/dVPN3OCXGDE
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_a5u10viu.5dw.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a5u10viu.5dw.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3428-9-0x000001F3554F0000-0x000001F355512000-memory.dmp

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memory/3428-18-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/3428-15-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/3428-14-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/3428-3-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/4724-0-0x00007FFFF3A33000-0x00007FFFF3A35000-memory.dmp

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memory/4724-57-0x00007FFFF3A33000-0x00007FFFF3A35000-memory.dmp

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memory/4724-58-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/4724-2-0x00007FFFF3A30000-0x00007FFFF44F1000-memory.dmp

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memory/4724-1-0x00000000006F0000-0x000000000070A000-memory.dmp

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