xworm | 6bda53ca02900dd70668d4cc7f2e55999f9b185084948ea139850158cae712e4

General

Target

Holy loader.exe
Size

70KB
MD5

3e9581c45838e539d694aaad436df5db
SHA1

d9765ff96a9f5766372f375af84d92e1f4b733c8
SHA256

6bda53ca02900dd70668d4cc7f2e55999f9b185084948ea139850158cae712e4
SHA512

3a8ca14a72d29d89b6a65a03e78f81f340a0b98b9e0b9f7ec27987a5270599251428702cffbad29d89af45339e35c63eadfd294d2bcd6439d9622317ed41a97a
SSDEEP

1536:iy9NO9p0/gp2YXJmcfGgSJpgcbcc5CNQAe56AdwLI7OUU4kA:iMgL0/M7/f9MGcbx+eZ+kOP4kA

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
1.exe
pastebin_url
https://pastebin.com/raw/0dDiYVux

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1532-1-0x00000000006C0000-0x00000000006D8000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

1524 powershell.exe
4560 powershell.exe
4260 powershell.exe
5100 powershell.exe

pid	process
1524	powershell.exe
4560	powershell.exe
4260	powershell.exe
5100	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

Processes:

Holy loader.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	Holy loader.exe

Drops startup file 2 IoCs

Processes:

Holy loader.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.lnk	Holy loader.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1.lnk	Holy loader.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Holy loader.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1 = "C:\\Users\\Admin\\AppData\\Roaming\\1.exe"	Holy loader.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service
T1102

Processes:

flow ioc

30 5.tcp.eu.ngrok.io
43 5.tcp.eu.ngrok.io
26 pastebin.com
27 pastebin.com
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

18 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

Processes:

schtasks.exe

pid process

4396 schtasks.exe

flow	ioc
30	5.tcp.eu.ngrok.io
43	5.tcp.eu.ngrok.io
26	pastebin.com
27	pastebin.com

flow	ioc
18	ip-api.com

pid	process
4396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
4560	powershell.exe
4560	powershell.exe
4260	powershell.exe
4260	powershell.exe
5100	powershell.exe
5100	powershell.exe
1524	powershell.exe
1524	powershell.exe
1524	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Holy loader.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1532	Holy loader.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	4260	powershell.exe
Token: SeDebugPrivilege	5100	powershell.exe
Token: SeDebugPrivilege	1524	powershell.exe
Token: SeDebugPrivilege	1532	Holy loader.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Holy loader.exe

description	pid	process	target process
PID 1532 wrote to memory of 4560	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 4560	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 4260	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 4260	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 5100	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 5100	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 1524	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 1524	1532	Holy loader.exe	powershell.exe
PID 1532 wrote to memory of 4396	1532	Holy loader.exe	schtasks.exe
PID 1532 wrote to memory of 4396	1532	Holy loader.exe	schtasks.exe

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\Holy loader.exe
"C:\Users\Admin\AppData\Local\Temp\Holy loader.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1532

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\Holy loader.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4560

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Holy loader.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4260

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\1.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5100

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '1.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1524

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "1" /tr "C:\Users\Admin\AppData\Roaming\1.exe"
2⤵
- Creates scheduled task(s)
PID:4396

Network

MITRE ATT&CK Matrix ATT&CK v13

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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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\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
31270cce8515658d95e3777ab0cb00da

SHA1
d2a76d542748b74df26921ef89e3268fc41a2506

SHA256
6bf5cd1c7dbd550c07986535c6aff02258e17c13cd4353e02e0ae178f6a4fe03

SHA512
6b5356e108af856dafbb33301d6bc5f8e657be30c495de439901ef21b31d68386d433a84c61100abcdf40037e299c84c21ba1e21619550c9f7766d341431d13a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
0b76b616fb826c97e65bef9827b2c11c

SHA1
e602d8bd371e86e288ad84d4838e291c471d59b3

SHA256
254501f64defe7d6e226972045f7e5eb5184ce89f07d96ea7d134b15988196dd

SHA512
9002da9a15dbc7b72904bb4bd0473a02370105e90593bf9d39367b8514ec7c6ec94b8d1111fbb9aa8b562a4d0ba67f43208c54382a32c4251e4d4ff7758b6736

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3kr05w5b.zms.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1532-1-0x00000000006C0000-0x00000000006D8000-memory.dmp

Filesize
96KB

Download
memory/1532-2-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/1532-60-0x0000000000EA0000-0x0000000000EAC000-memory.dmp

Filesize
48KB

Download
memory/1532-0-0x00007FFD3E633000-0x00007FFD3E635000-memory.dmp

Filesize
8KB

Download
memory/1532-59-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-6-0x000001AC7CAC0000-0x000001AC7CAE2000-memory.dmp

Filesize
136KB

Download
memory/4560-19-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-16-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-15-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-10-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-3-0x00007FFD3E630000-0x00007FFD3F0F1000-memory.dmp

Filesize
10.8MB

Download
memory/5100-43-0x000001C322F50000-0x000001C32316C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads