xworm | 1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201

General

Target

1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Size

62KB
MD5

33f2e0edb3d56165f186cb8ba0d8346d
SHA1

240c5b0fd575ae1218b54f50d8f7b279f1f8958f
SHA256

1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201
SHA512

18a8bf379160fb850e286b933e37a96b965bd4f61e6260aff3ab01077c8245d6637e772bc5b1e1b0ec44c9c60274150d4fd132950e9885a618c269a61ac69b6b
SSDEEP

1536:jdQoncyC0zO9DOvOQuXCDsl+b9mEYzUBrk6PJMVOc6dP9:5b4iOB8jri+b9me17MVOcW9

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
AggeratorHost.exe
pastebin_url
https://pastebin.com/raw/9cuDuyiP

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/652-1-0x00000000008E0000-0x00000000008F6000-memory.dmp	family_xworm
behavioral2/files/0x000c00000002346d-56.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
4416	powershell.exe
4700	powershell.exe
872	powershell.exe
4160	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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Executes dropped EXE 2 IoCs

pid	Process
1504	AggeratorHost.exe
3040	AggeratorHost.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AggeratorHost = "C:\\Users\\Admin\\AppData\\Roaming\\AggeratorHost.exe"	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
9	pastebin.com
13	pastebin.com

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

System Information Discovery
T1082

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
4020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4160	powershell.exe
4160	powershell.exe
4416	powershell.exe
4416	powershell.exe
4700	powershell.exe
4700	powershell.exe
872	powershell.exe
872	powershell.exe
652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Token: SeDebugPrivilege	4160	powershell.exe
Token: SeDebugPrivilege	4416	powershell.exe
Token: SeDebugPrivilege	4700	powershell.exe
Token: SeDebugPrivilege	872	powershell.exe
Token: SeDebugPrivilege	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
Token: SeDebugPrivilege	1504	AggeratorHost.exe
Token: SeDebugPrivilege	3040	AggeratorHost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 652 wrote to memory of 4160	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	82
PID 652 wrote to memory of 4160	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	82
PID 652 wrote to memory of 4416	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	84
PID 652 wrote to memory of 4416	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	84
PID 652 wrote to memory of 4700	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	86
PID 652 wrote to memory of 4700	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	86
PID 652 wrote to memory of 872	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	88
PID 652 wrote to memory of 872	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	88
PID 652 wrote to memory of 4020	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	90
PID 652 wrote to memory of 4020	652	1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe	90

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\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe
"C:\Users\Admin\AppData\Local\Temp\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:652
- 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\1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4160
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4416
- 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\AggeratorHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4700
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'AggeratorHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:872
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "AggeratorHost" /tr "C:\Users\Admin\AppData\Roaming\AggeratorHost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4020

C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1504

C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
C:\Users\Admin\AppData\Roaming\AggeratorHost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3040

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
07ab6cc81c5230a598c0ad1711b6bd97

SHA1
de7e270e12d447dfc5896b7c96777eb32725778a

SHA256
900aa2c83ec8773c3f9705f75b28fff0eaca57f7adb33dc82564d7ea8f8069a3

SHA512
ffef0ad0824ea0fdab29eb3c44448100f79365a1729c7665eba9aef85a88e60901bc6a6c248de15a28d21be9ce5839d68861e4449ff557d8845927c740ba3a25

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

Filesize
944B

MD5
75d224e238a397659d8e5cf458a41143

SHA1
d182d16283d3d864a2e328b677551428c29ad6df

SHA256
6a98fa5e6c5b77722f2bd8c855fd14d6bf545fc35b292252d1dc136b89ed2fee

SHA512
3477f3b4182ffdccc817de4242c8fcba706c193a0de5170cd023f8df3d330487d7e372556524b5a0fe1df56de40923700f3f8368eadf6601970e347cbcf078cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dfbnfg0k.m4c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\AggeratorHost.exe

Filesize
62KB

MD5
33f2e0edb3d56165f186cb8ba0d8346d

SHA1
240c5b0fd575ae1218b54f50d8f7b279f1f8958f

SHA256
1528618cb729ad8cd53332e93a75ca4b7b1e2ac2fcbb5a5d33b8bf4ec1740201

SHA512
18a8bf379160fb850e286b933e37a96b965bd4f61e6260aff3ab01077c8245d6637e772bc5b1e1b0ec44c9c60274150d4fd132950e9885a618c269a61ac69b6b

Download Submit
memory/652-53-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/652-0-0x00007FFB44253000-0x00007FFB44255000-memory.dmp

Filesize
8KB

Download
memory/652-54-0x00007FFB44253000-0x00007FFB44255000-memory.dmp

Filesize
8KB

Download
memory/652-55-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/652-1-0x00000000008E0000-0x00000000008F6000-memory.dmp

Filesize
88KB

Download
memory/4160-17-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/4160-14-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/4160-13-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/4160-12-0x00007FFB44250000-0x00007FFB44D11000-memory.dmp

Filesize
10.8MB

Download
memory/4160-8-0x00000225EC640000-0x00000225EC662000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads