xworm | 7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246

General

Target

Midnight.exe
Size

73KB
MD5

af9ff800562a87e5121cad94adb74471
SHA1

ccadb2b20a7ee0cffeffed04e415ca131a7c41bc
SHA256

7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246
SHA512

004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892
SSDEEP

1536:q2H3hrFnT3fdHC0+aasbh0bkkNB/cxbRH6TTpH4ONThXiA:nXffdDznmbklxbCTpYOBhSA

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:56698

true-lung.gl.at.ply.gg:56698

Attributes

Install_directory
%Userprofile%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4916-1-0x0000000000A90000-0x0000000000AA8000-memory.dmp	family_xworm
behavioral2/files/0x000d000000023b76-60.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
4092	powershell.exe
4364	powershell.exe
964	powershell.exe
1952	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Midnight.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3280	svhost.exe
4612	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\svhost.exe"	Midnight.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
13	ip-api.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
2020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4092	powershell.exe
4092	powershell.exe
4364	powershell.exe
4364	powershell.exe
964	powershell.exe
964	powershell.exe
1952	powershell.exe
1952	powershell.exe
4916	Midnight.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	Midnight.exe
Token: SeDebugPrivilege	4092	powershell.exe
Token: SeDebugPrivilege	4364	powershell.exe
Token: SeDebugPrivilege	964	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	4916	Midnight.exe
Token: SeDebugPrivilege	3280	svhost.exe
Token: SeDebugPrivilege	4612	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4916	Midnight.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 4092	4916	Midnight.exe	92
PID 4916 wrote to memory of 4092	4916	Midnight.exe	92
PID 4916 wrote to memory of 4364	4916	Midnight.exe	96
PID 4916 wrote to memory of 4364	4916	Midnight.exe	96
PID 4916 wrote to memory of 964	4916	Midnight.exe	98
PID 4916 wrote to memory of 964	4916	Midnight.exe	98
PID 4916 wrote to memory of 1952	4916	Midnight.exe	100
PID 4916 wrote to memory of 1952	4916	Midnight.exe	100
PID 4916 wrote to memory of 2020	4916	Midnight.exe	106
PID 4916 wrote to memory of 2020	4916	Midnight.exe	106

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\Midnight.exe
"C:\Users\Admin\AppData\Local\Temp\Midnight.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:4916
- 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\Midnight.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4092
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Midnight.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4364
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:964
- 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:1952
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\svhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2020

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3280

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4612

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

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\svhost.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
e8ce785f8ccc6d202d56fefc59764945

SHA1
ca032c62ddc5e0f26d84eff9895eb87f14e15960

SHA256
d85c19fc6b9d25e2168a2cc50ff38bd226fbf4f02aa7ac038a5f319522d2ffa4

SHA512
66460aec4afee582556270f8ee6048d130a090f1c12a2632ed71a99a4073e9931e9e1cc286e32debffb95a90bd955f0f0d6ec891b1c5cd2f0aae41eb6d25832f

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

Filesize
944B

MD5
05b1e52b445582c060c505f3d89bc540

SHA1
acb74be5e672dc409bd265a30e7ae2df96bfa975

SHA256
50184106d36bc22f8856534b64698338a0d7a4813d1b5802f0ae09ec9d995c7a

SHA512
1040f2ebea0cfc242d64a3ef36a8aa212bd7b2d45ecf518599f89cb2799568ba8d2361f900b61d753606bf5035d7340b47de13cf1de21ad29cceb76e0f194bf6

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

Filesize
944B

MD5
9a2c763c5ff40e18e49ad63c7c3b0088

SHA1
4b289ea34755323fa869da6ad6480d8d12385a36

SHA256
517807921c55bd16cd8a8bfae3d5dc19444c66f836b66acd5593e3080acbaf8e

SHA512
3af01926bc7de92076067d158d7250b206d396b3282ee0db43639d04d91bd9ff763acbce12c7822914824984a3c5fdd1b8dbf1ad2ee88233d47f0f808b746bc8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eobyfi10.dgs.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
73KB

MD5
af9ff800562a87e5121cad94adb74471

SHA1
ccadb2b20a7ee0cffeffed04e415ca131a7c41bc

SHA256
7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246

SHA512
004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892

Download Submit
memory/4092-4-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4092-18-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4092-19-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4092-15-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4092-10-0x000001EA69CB0000-0x000001EA69CD2000-memory.dmp

Filesize
136KB

Download
memory/4092-3-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-20-0x00007FFD4F7E3000-0x00007FFD4F7E5000-memory.dmp

Filesize
8KB

Download
memory/4916-0-0x00007FFD4F7E3000-0x00007FFD4F7E5000-memory.dmp

Filesize
8KB

Download
memory/4916-59-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-2-0x00007FFD4F7E0000-0x00007FFD502A1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-1-0x0000000000A90000-0x0000000000AA8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads