xworm | 722416d5d03bb6f124099c32f51332b07e02ed9da1f38b55259ffcbbaf06b247

General

Target

FataliyCrack/FatalityLoader.exe
Size

321KB
MD5

280153c108845d84c90190e3c89fb306
SHA1

13dd14c250698a61b71d848f1ca3cdcdbdfd9585
SHA256

d918b4970b02b073eb3fd038397f40b2ffa43189205bc2c94d463dab32e00316
SHA512

ff4fc6721cdd62a9d30b0cc502e6696dcca93864717528d94ab0b9426ac01a7dd9272e8d43cfd2a4fb6348438e2c68564216068f1608bcb364179ed68fc79818
SSDEEP

3072:J8YRi/F+rMmtgU2b8SWLOmteSQvWzSBp:J8LF+zt92bzqhgWz

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
FatalityLoader.exe
pastebin_url
https://pastebin.com/raw/mercTNMT

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/3620-1-0x0000000000A20000-0x0000000000A76000-memory.dmp	family_xworm
behavioral1/files/0x000b000000023ca3-61.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
2124	powershell.exe
4936	powershell.exe
3968	powershell.exe
3468	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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	FatalityLoader.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4968	FatalityLoader.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FatalityLoader = "C:\\Users\\Admin\\AppData\\Roaming\\FatalityLoader.exe"	FatalityLoader.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 9 IoCs

Web Service

T1102

flow	ioc
31	pastebin.com
33	pastebin.com
34	pastebin.com
35	pastebin.com
41	pastebin.com
17	pastebin.com
18	pastebin.com
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.

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
4432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3468	powershell.exe
3468	powershell.exe
2124	powershell.exe
2124	powershell.exe
4936	powershell.exe
4936	powershell.exe
3968	powershell.exe
3968	powershell.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3620	FatalityLoader.exe
Token: SeDebugPrivilege	3468	powershell.exe
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	4936	powershell.exe
Token: SeDebugPrivilege	3968	powershell.exe
Token: SeDebugPrivilege	4968	FatalityLoader.exe
Token: SeDebugPrivilege	3832	FatalityLoader.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 3468	3620	FatalityLoader.exe	88
PID 3620 wrote to memory of 3468	3620	FatalityLoader.exe	88
PID 3620 wrote to memory of 2124	3620	FatalityLoader.exe	90
PID 3620 wrote to memory of 2124	3620	FatalityLoader.exe	90
PID 3620 wrote to memory of 4936	3620	FatalityLoader.exe	92
PID 3620 wrote to memory of 4936	3620	FatalityLoader.exe	92
PID 3620 wrote to memory of 3968	3620	FatalityLoader.exe	94
PID 3620 wrote to memory of 3968	3620	FatalityLoader.exe	94
PID 3620 wrote to memory of 4432	3620	FatalityLoader.exe	96
PID 3620 wrote to memory of 4432	3620	FatalityLoader.exe	96

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\FataliyCrack\FatalityLoader.exe
"C:\Users\Admin\AppData\Local\Temp\FataliyCrack\FatalityLoader.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3620
- 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\FataliyCrack\FatalityLoader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3468
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FatalityLoader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2124
- 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\FatalityLoader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4936
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FatalityLoader.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3968
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "FatalityLoader" /tr "C:\Users\Admin\AppData\Roaming\FatalityLoader.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4432

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2028

C:\Users\Admin\AppData\Roaming\FatalityLoader.exe
C:\Users\Admin\AppData\Roaming\FatalityLoader.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4968

C:\Users\Admin\AppData\Local\Temp\FataliyCrack\FatalityLoader.exe
"C:\Users\Admin\AppData\Local\Temp\FataliyCrack\FatalityLoader.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3832

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\FatalityLoader.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
9072d3c4faa83ef0f5ed5b299b75618d

SHA1
f2bb8ee12abae6da1406fc566810ce397f1d054b

SHA256
9f9196488c5ae1227d43941675252f2399ef20aebba80ed6a829822104c40475

SHA512
a7bb981438e7d0932291531f49c00ca2b57a5c44cedede2b81f5a6abeefb4f00434e0c2edb2d3ad33c21e61e88091042f9d783f9fd39b18cfd1306b450f1f6bb

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

Filesize
944B

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b3pq320l.lqz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
321KB

MD5
280153c108845d84c90190e3c89fb306

SHA1
13dd14c250698a61b71d848f1ca3cdcdbdfd9585

SHA256
d918b4970b02b073eb3fd038397f40b2ffa43189205bc2c94d463dab32e00316

SHA512
ff4fc6721cdd62a9d30b0cc502e6696dcca93864717528d94ab0b9426ac01a7dd9272e8d43cfd2a4fb6348438e2c68564216068f1608bcb364179ed68fc79818

Download Submit
memory/2124-31-0x00000251A57F0000-0x00000251A5A0C000-memory.dmp

Filesize
2.1MB

Download
memory/3468-4-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3468-18-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3468-15-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3468-10-0x00000262F6000000-0x00000262F6022000-memory.dmp

Filesize
136KB

Download
memory/3468-3-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3620-0-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

Filesize
8KB

Download
memory/3620-54-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

Filesize
8KB

Download
memory/3620-60-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3620-2-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3620-1-0x0000000000A20000-0x0000000000A76000-memory.dmp

Filesize
344KB

Download
memory/4936-43-0x0000021966380000-0x000002196659C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads