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
behavioral3/memory/1976-1-0x0000000000600000-0x0000000000618000-memory.dmp	family_xworm
behavioral3/files/0x002000000002ab08-57.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
3908	powershell.exe
2956	powershell.exe
1524	powershell.exe
3692	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	Midnight.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	Midnight.exe

Executes dropped EXE 3 IoCs

pid	Process
3968	svhost.exe
3088	svhost.exe
3680	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-1-5-21-1537126222-899333903-2037027349-1000\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
1	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
3008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1524	powershell.exe
1524	powershell.exe
3692	powershell.exe
3692	powershell.exe
3908	powershell.exe
3908	powershell.exe
2956	powershell.exe
2956	powershell.exe
1976	Midnight.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	Midnight.exe
Token: SeDebugPrivilege	1524	powershell.exe
Token: SeDebugPrivilege	3692	powershell.exe
Token: SeDebugPrivilege	3908	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	1976	Midnight.exe
Token: SeDebugPrivilege	3968	svhost.exe
Token: SeDebugPrivilege	3088	svhost.exe
Token: SeDebugPrivilege	3680	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1976	Midnight.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 1524	1976	Midnight.exe	82
PID 1976 wrote to memory of 1524	1976	Midnight.exe	82
PID 1976 wrote to memory of 3692	1976	Midnight.exe	84
PID 1976 wrote to memory of 3692	1976	Midnight.exe	84
PID 1976 wrote to memory of 3908	1976	Midnight.exe	86
PID 1976 wrote to memory of 3908	1976	Midnight.exe	86
PID 1976 wrote to memory of 2956	1976	Midnight.exe	88
PID 1976 wrote to memory of 2956	1976	Midnight.exe	88
PID 1976 wrote to memory of 3008	1976	Midnight.exe	90
PID 1976 wrote to memory of 3008	1976	Midnight.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\Midnight.exe
"C:\Users\Admin\AppData\Local\Temp\Midnight.exe"
1⤵
- 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:1976
- 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:1524
- 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:3692
- 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:3908
- 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:2956
- 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:3008

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3968

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3088

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3680

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

1

T1012

System Information Discovery

1

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
944B

MD5
55f30089624be31af328ba4e012ae45a

SHA1
121c28de7a5afe828ea395d94be8f5273817b678

SHA256
28e49da06bd64f06a4cf1a9caead354b94b4d11d5dc916a92da0ed96bad00473

SHA512
ef13cc5b22c754c7816e08b421de64bc8df527d7166e970454139410b2d381b53ebf288ec73013cdce92f0ac226d9ed5b342341db52a8cb0b85b5ad4d3090787

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

Filesize
944B

MD5
dbed6207e0d3208bd0ee26b6c99307e3

SHA1
facbc3806e7596b021efd6a475cd407058223703

SHA256
631632aac60e6815fb18144cce66425db89b75c1e9d2c4af46d9d5148b6f5f72

SHA512
a0fbe5b0d32f20ffe23aebf00b77d41159ed7c01b2302efa6e6a0cc61e4c008538f44d2cf8c7ab6c062317d1c5762eebedf0d9a06a7fdde112d231f0a27fff8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wsgekatj.gce.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/1524-11-0x0000020A85870000-0x0000020A85892000-memory.dmp

Filesize
136KB

Download
memory/1524-15-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1524-16-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1524-19-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1524-14-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1524-13-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1524-12-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1976-40-0x00007FFE22B93000-0x00007FFE22B95000-memory.dmp

Filesize
8KB

Download
memory/1976-0-0x00007FFE22B93000-0x00007FFE22B95000-memory.dmp

Filesize
8KB

Download
memory/1976-56-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1976-2-0x00007FFE22B90000-0x00007FFE23652000-memory.dmp

Filesize
10.8MB

Download
memory/1976-1-0x0000000000600000-0x0000000000618000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads