xworm | 8f94583eec5aca659887cce2919cb9df83d30902b7dfd0739652b5b34a9a9834

General

Target

260e5d45c87a65a323a83299f4e506c1.exe
Size

86KB
MD5

260e5d45c87a65a323a83299f4e506c1
SHA1

1e097fababd5f0b148063c0f782ed24fb9ce2eab
SHA256

8f94583eec5aca659887cce2919cb9df83d30902b7dfd0739652b5b34a9a9834
SHA512

b2c47682b9c226b156a25be0682be0bdd6fbe300f7551886e5eb4b250534fb7635f6b6255174305ba3e74be502c1a6a867c0b4d8597ad648fab2d42536795dba
SSDEEP

1536:XMu6hjMcUsFZ59lJbtEq0d+bKR3F1rhCG60TPDhqNZyMOJKTfdV2jPbf:XMTN9ZB5E+by1rqNYMOJKRV+f

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

134.255.254.225:5058

Attributes

Install_directory
%AppData%
install_file
Windows.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3700-0-0x0000000000A90000-0x0000000000AAC000-memory.dmp	family_xworm
behavioral2/files/0x0007000000023230-9.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	260e5d45c87a65a323a83299f4e506c1.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	260e5d45c87a65a323a83299f4e506c1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	260e5d45c87a65a323a83299f4e506c1.exe

Executes dropped EXE 2 IoCs

pid	Process
3932	Windows.exe
4456	Windows.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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Roaming\\Windows.exe"	260e5d45c87a65a323a83299f4e506c1.exe

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

pid	Process
236	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3700	260e5d45c87a65a323a83299f4e506c1.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3700	260e5d45c87a65a323a83299f4e506c1.exe
Token: SeDebugPrivilege	3700	260e5d45c87a65a323a83299f4e506c1.exe
Token: SeDebugPrivilege	3932	Windows.exe
Token: SeDebugPrivilege	4456	Windows.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3700	260e5d45c87a65a323a83299f4e506c1.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3700 wrote to memory of 236	3700	260e5d45c87a65a323a83299f4e506c1.exe	83
PID 3700 wrote to memory of 236	3700	260e5d45c87a65a323a83299f4e506c1.exe	83

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\260e5d45c87a65a323a83299f4e506c1.exe
"C:\Users\Admin\AppData\Local\Temp\260e5d45c87a65a323a83299f4e506c1.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:3700
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows" /tr "C:\Users\Admin\AppData\Roaming\Windows.exe"
  2⤵
  - Creates scheduled task(s)
  PID:236

C:\Users\Admin\AppData\Roaming\Windows.exe
C:\Users\Admin\AppData\Roaming\Windows.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3932

C:\Users\Admin\AppData\Roaming\Windows.exe
C:\Users\Admin\AppData\Roaming\Windows.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

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

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
86KB

MD5
260e5d45c87a65a323a83299f4e506c1

SHA1
1e097fababd5f0b148063c0f782ed24fb9ce2eab

SHA256
8f94583eec5aca659887cce2919cb9df83d30902b7dfd0739652b5b34a9a9834

SHA512
b2c47682b9c226b156a25be0682be0bdd6fbe300f7551886e5eb4b250534fb7635f6b6255174305ba3e74be502c1a6a867c0b4d8597ad648fab2d42536795dba

Download Submit
memory/3700-0-0x0000000000A90000-0x0000000000AAC000-memory.dmp

Filesize
112KB

Download
memory/3700-1-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/3700-6-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

Filesize
64KB

Download
memory/3700-7-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/3700-8-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

Filesize
64KB

Download
memory/3932-11-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/3932-13-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4456-17-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download
memory/4456-18-0x00007FF9A9610000-0x00007FF9AA0D1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads