xworm | 675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a

General

Target

bb1529af37bcc44a4d65ee8da4ab05be.exe
Size

80KB
MD5

bb1529af37bcc44a4d65ee8da4ab05be
SHA1

2e0e4ddd78ff20ec2de8fb8993a0649cabfeedd2
SHA256

675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a
SHA512

2a8fb12264df2f6bdf272fa585e2b5b27829e9f96813a5d349da2a7c8348cd3eb9097f5d10f3320f1ab192041d0274cd2ac4c0d9bcd0d716e33f1dc6162baf7b
SSDEEP

1536:Gmc2zu/kU4Nl5jZnttCahWtrbazbwq6Kciw6VaZwYVg/VOZO6Kmi80:GmcT8UEntH4trbaYhKc8OZxK+0

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

82.147.85.135:7000

Attributes

Install_directory
%AppData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1284-1-0x0000000001150000-0x000000000116A000-memory.dmp	family_xworm
behavioral1/files/0x000f00000001226c-33.dat	family_xworm
behavioral1/memory/2004-37-0x0000000001290000-0x00000000012AA000-memory.dmp	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
2708	powershell.exe
2680	powershell.exe
3040	powershell.exe
2684	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	bb1529af37bcc44a4d65ee8da4ab05be.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	bb1529af37bcc44a4d65ee8da4ab05be.exe

Executes dropped EXE 2 IoCs

pid	Process
2908	svhost.exe
2004	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-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe"	bb1529af37bcc44a4d65ee8da4ab05be.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
2	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
1956	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1284	bb1529af37bcc44a4d65ee8da4ab05be.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2708	powershell.exe
2680	powershell.exe
3040	powershell.exe
2684	powershell.exe
1284	bb1529af37bcc44a4d65ee8da4ab05be.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	2684	powershell.exe
Token: SeDebugPrivilege	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe
Token: SeDebugPrivilege	2908	svhost.exe
Token: SeDebugPrivilege	2004	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1284	bb1529af37bcc44a4d65ee8da4ab05be.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 2708	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	29
PID 1284 wrote to memory of 2708	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	29
PID 1284 wrote to memory of 2708	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	29
PID 1284 wrote to memory of 2680	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	31
PID 1284 wrote to memory of 2680	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	31
PID 1284 wrote to memory of 2680	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	31
PID 1284 wrote to memory of 3040	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	33
PID 1284 wrote to memory of 3040	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	33
PID 1284 wrote to memory of 3040	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	33
PID 1284 wrote to memory of 2684	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	35
PID 1284 wrote to memory of 2684	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	35
PID 1284 wrote to memory of 2684	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	35
PID 1284 wrote to memory of 1956	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	37
PID 1284 wrote to memory of 1956	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	37
PID 1284 wrote to memory of 1956	1284	bb1529af37bcc44a4d65ee8da4ab05be.exe	37
PID 552 wrote to memory of 2908	552	taskeng.exe	42
PID 552 wrote to memory of 2908	552	taskeng.exe	42
PID 552 wrote to memory of 2908	552	taskeng.exe	42
PID 552 wrote to memory of 2004	552	taskeng.exe	43
PID 552 wrote to memory of 2004	552	taskeng.exe	43
PID 552 wrote to memory of 2004	552	taskeng.exe	43

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\bb1529af37bcc44a4d65ee8da4ab05be.exe
"C:\Users\Admin\AppData\Local\Temp\bb1529af37bcc44a4d65ee8da4ab05be.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1284
- 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\bb1529af37bcc44a4d65ee8da4ab05be.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'bb1529af37bcc44a4d65ee8da4ab05be.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- 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:3040
- 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:2684
- 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:1956

C:\Windows\system32\taskeng.exe
taskeng.exe {1E6E22CC-AF42-4A1F-B18F-4CBE79213CEC} S-1-5-21-3691908287-3775019229-3534252667-1000:UOTHCPHQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:552
- C:\Users\Admin\AppData\Roaming\svhost.exe
  C:\Users\Admin\AppData\Roaming\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2908
- C:\Users\Admin\AppData\Roaming\svhost.exe
  C:\Users\Admin\AppData\Roaming\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\HPS84YCRZZ050TF1YVLN.temp

Filesize
7KB

MD5
770fb019c13bf1864e1a81b62feede6b

SHA1
34e7dc952cdbd1cd53691dc1f006d7240b1f9b21

SHA256
094a7365f78b3e232b0bdfa6c47ae8d2b428f59fa411d3a34612b9b73aa745a6

SHA512
0d68ad7aa77efe98a683623f6163968d4207122e6ad267ac65768b1adec6eaa9791c0173c67db1238d6035696eeb4f2db45e6aac37e5b894e2dc76e6b55ab699

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

Filesize
80KB

MD5
bb1529af37bcc44a4d65ee8da4ab05be

SHA1
2e0e4ddd78ff20ec2de8fb8993a0649cabfeedd2

SHA256
675904e6ddfe4d5801da49bb4935fc71859e4edf5879a8c173f1f7df35c3970a

SHA512
2a8fb12264df2f6bdf272fa585e2b5b27829e9f96813a5d349da2a7c8348cd3eb9097f5d10f3320f1ab192041d0274cd2ac4c0d9bcd0d716e33f1dc6162baf7b

Download Submit
memory/1284-0-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/1284-1-0x0000000001150000-0x000000000116A000-memory.dmp

Filesize
104KB

Download
memory/1284-2-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/1284-3-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/1284-31-0x000007FEF5800000-0x000007FEF61EC000-memory.dmp

Filesize
9.9MB

Download
memory/2004-37-0x0000000001290000-0x00000000012AA000-memory.dmp

Filesize
104KB

Download
memory/2680-15-0x000000001B500000-0x000000001B7E2000-memory.dmp

Filesize
2.9MB

Download
memory/2680-16-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2708-8-0x000000001B8B0000-0x000000001BB92000-memory.dmp

Filesize
2.9MB

Download
memory/2708-9-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads