xworm | e37402a9a7192a5c341e38c64713b0f4bf963f44f0d2003a656ed64ef3fd1c00

General

Target

xdbabykai.exe
Size

66KB
MD5

574f80e11cd6dbbf20ed6fc1d5ebf986
SHA1

c8cc32715ba8297c7a144423dd147e8f8375baee
SHA256

e37402a9a7192a5c341e38c64713b0f4bf963f44f0d2003a656ed64ef3fd1c00
SHA512

6b40cb751ad6c755461f8959272123224efb5b4245af722c40972d3b333cdd68bda718a32dfd462b1952f1b945f75dc483bd082d2dc0da406affec9fa0bd88a6
SSDEEP

768:Lqpemdo3SEMO3v2hAHWkQiLYEbLf5KSvs+HWK1Pew60J/pOK573ghDJZ04hq:Ll1PM1iHWi5bL4S01Kdb62pOCgl7Pq

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:9999

Attributes

Install_directory
%ProgramData%
install_file
$77wsappx.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2244-1-0x00000000002D0000-0x00000000002E6000-memory.dmp	family_xworm
behavioral2/files/0x000a000000023c84-59.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
1916	powershell.exe
4564	powershell.exe
4660	powershell.exe
1260	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	xdbabykai.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77wsappx.lnk	xdbabykai.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77wsappx.lnk	xdbabykai.exe

Executes dropped EXE 2 IoCs

pid	Process
4612	$77wsappx.exe
2468	$77wsappx.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77wsappx = "C:\\ProgramData\\$77wsappx.exe"	xdbabykai.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
14	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
4212	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2244	xdbabykai.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1916	powershell.exe
1916	powershell.exe
4564	powershell.exe
4564	powershell.exe
4660	powershell.exe
4660	powershell.exe
1260	powershell.exe
1260	powershell.exe
2244	xdbabykai.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	xdbabykai.exe
Token: SeDebugPrivilege	1916	powershell.exe
Token: SeDebugPrivilege	4564	powershell.exe
Token: SeDebugPrivilege	4660	powershell.exe
Token: SeDebugPrivilege	1260	powershell.exe
Token: SeDebugPrivilege	2244	xdbabykai.exe
Token: SeDebugPrivilege	4612	$77wsappx.exe
Token: SeDebugPrivilege	2468	$77wsappx.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2244	xdbabykai.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 1916	2244	xdbabykai.exe	94
PID 2244 wrote to memory of 1916	2244	xdbabykai.exe	94
PID 2244 wrote to memory of 4564	2244	xdbabykai.exe	98
PID 2244 wrote to memory of 4564	2244	xdbabykai.exe	98
PID 2244 wrote to memory of 4660	2244	xdbabykai.exe	100
PID 2244 wrote to memory of 4660	2244	xdbabykai.exe	100
PID 2244 wrote to memory of 1260	2244	xdbabykai.exe	102
PID 2244 wrote to memory of 1260	2244	xdbabykai.exe	102
PID 2244 wrote to memory of 4212	2244	xdbabykai.exe	108
PID 2244 wrote to memory of 4212	2244	xdbabykai.exe	108

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\xdbabykai.exe
"C:\Users\Admin\AppData\Local\Temp\xdbabykai.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:2244
- 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\xdbabykai.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1916
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'xdbabykai.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4564
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\$77wsappx.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4660
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77wsappx.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1260
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77wsappx" /tr "C:\ProgramData\$77wsappx.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4212

C:\ProgramData\$77wsappx.exe
C:\ProgramData\$77wsappx.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4612

C:\ProgramData\$77wsappx.exe
C:\ProgramData\$77wsappx.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2468

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\$77wsappx.exe

Filesize
66KB

MD5
574f80e11cd6dbbf20ed6fc1d5ebf986

SHA1
c8cc32715ba8297c7a144423dd147e8f8375baee

SHA256
e37402a9a7192a5c341e38c64713b0f4bf963f44f0d2003a656ed64ef3fd1c00

SHA512
6b40cb751ad6c755461f8959272123224efb5b4245af722c40972d3b333cdd68bda718a32dfd462b1952f1b945f75dc483bd082d2dc0da406affec9fa0bd88a6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\$77wsappx.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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

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_pwqmk2a4.nqt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1916-12-0x000001AAD0F50000-0x000001AAD0F72000-memory.dmp

Filesize
136KB

Download
memory/1916-18-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/1916-15-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/1916-14-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/1916-13-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/2244-0-0x00007FFC9E503000-0x00007FFC9E505000-memory.dmp

Filesize
8KB

Download
memory/2244-57-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/2244-2-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/2244-1-0x00000000002D0000-0x00000000002E6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads