xworm | 48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60

General

Target

48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe
Size

90KB
MD5

8315e117fc6a50d1c842af2c6503766d
SHA1

b2bfed39edf59185127b83d6b0c27fcb083240c6
SHA256

48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60
SHA512

9b1fa8ac3008158c38f4bf5602ee379fc1db8a2ce48b2157433713050d620fac49fcc5e34f12917942f7b509bf368fefc39d88d3974fdb44c7b180a7751f1c06
SSDEEP

1536:z0P9tIviJ6fofHXNz8EwD+pD2sWeLqmXygpE+9bPFdDgmTRQz6upWgOS8Hxs8v1:zWYAfdEapDRqmZ79bPF5hNQxp5ODRse

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/qNxmZ4py
telegram
https://api.telegram.org/bot7203706160:AAF4tCJ1Wth4zgjmFfvhvR05D14D1M_Y3Sw/sendMessage?chat_id=5605545798

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4688-1-0x0000000000FC0000-0x0000000000FDC000-memory.dmp	family_xworm
behavioral2/files/0x000900000001e4d4-59.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
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
1428	powershell.exe
1520	powershell.exe
2596	powershell.exe
372	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-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

Executes dropped EXE 2 IoCs

pid	Process
3044	svchost.exe
3616	svchost.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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

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

Web Service

T1102

flow	ioc
28	pastebin.com
29	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
3852	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1428	powershell.exe
1428	powershell.exe
1520	powershell.exe
1520	powershell.exe
2596	powershell.exe
2596	powershell.exe
372	powershell.exe
372	powershell.exe
4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe
Token: SeDebugPrivilege	1428	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	372	powershell.exe
Token: SeDebugPrivilege	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe
Token: SeDebugPrivilege	3044	svchost.exe
Token: SeDebugPrivilege	3616	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4688 wrote to memory of 1428	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	91
PID 4688 wrote to memory of 1428	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	91
PID 4688 wrote to memory of 1520	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	95
PID 4688 wrote to memory of 1520	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	95
PID 4688 wrote to memory of 2596	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	98
PID 4688 wrote to memory of 2596	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	98
PID 4688 wrote to memory of 372	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	100
PID 4688 wrote to memory of 372	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	100
PID 4688 wrote to memory of 3852	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe	102
PID 4688 wrote to memory of 3852	4688	48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.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\48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe
"C:\Users\Admin\AppData\Local\Temp\48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe"
1⤵
- Checks computer location settings
- 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:4688
- 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\48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1520
- 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\svchost.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 -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:372
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3852

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3044

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3616

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\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
7ecf2901e05b98e418e951df4de8e33f

SHA1
e1174d8fc2d4fdea911b1e9233dfdff74969b175

SHA256
6d311a58bf7eb2811579ccbc8f488fff8089f98ea99e2d081ea944344d4c917e

SHA512
dbf327afc4fe608b6794f47d69b4ee3612ba2ccfd49002727d48270be002f87eba2394e5b323710f690f93d14b54f8ce8f439dae2248801cd1784b4aa521b137

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

Filesize
944B

MD5
60945d1a2e48da37d4ce8d9c56b6845a

SHA1
83e80a6acbeb44b68b0da00b139471f428a9d6c1

SHA256
314b91c00997034d6e015f40230d90ebbf57de5dc938b62c1a214d591793dbe3

SHA512
5d068f1d6443e26ae3cad1c80f969e50e5860967b314153c4d3b6efd1cfa39f0907c6427bec7fa43db079f258b6357e4e9a1b0b1a36b1481d2049ea0e67909ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nkponzta.zc0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
90KB

MD5
8315e117fc6a50d1c842af2c6503766d

SHA1
b2bfed39edf59185127b83d6b0c27fcb083240c6

SHA256
48b240ba8fee82254c60726c3635e121e5c84817d74e8c65e88f90f97c71ec60

SHA512
9b1fa8ac3008158c38f4bf5602ee379fc1db8a2ce48b2157433713050d620fac49fcc5e34f12917942f7b509bf368fefc39d88d3974fdb44c7b180a7751f1c06

Download Submit
memory/1428-12-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/1428-17-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/1428-14-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/1428-13-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/1428-2-0x0000021E6E240000-0x0000021E6E262000-memory.dmp

Filesize
136KB

Download
memory/4688-0-0x00007FFBEE683000-0x00007FFBEE685000-memory.dmp

Filesize
8KB

Download
memory/4688-56-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/4688-57-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/4688-1-0x0000000000FC0000-0x0000000000FDC000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads