xworm | 2f38d2f40f80df0ce510c5c5a35c463e26ed1a2886c1a8cffcc406630551476b

General

Target

9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
Size

89KB
MD5

7758ee1f6165c9cec1113f8b1b7c1b72
SHA1

5e5fa255f2e0c2eb0c02dd055ba0004292a8cf70
SHA256

9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3
SHA512

6a70f60b0ee566cb5d26f6fad36c440cca5d9f89fce2d3355b222b499b321b0fa4d4cdab74a4fd98d4286450235d7eaaf8bc0eef6a13d2404121428a657ef612
SSDEEP

1536:YKpPAEG0RI/8PXVd4rbIlUSgwlpZr9O0Eik23C7Hx:jIEGH0PFdKbIlqwlp59O0EiN3C

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

179.118.199.252:7771

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1096-1-0x0000000000EC0000-0x0000000000EDA000-memory.dmp	family_xworm
behavioral2/files/0x00090000000233ed-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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.lnk	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.lnk	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Executes dropped EXE 2 IoCs

pid	Process
640	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
448	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3 = "C:\\Users\\Admin\\AppData\\Roaming\\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe"	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.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
21	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
4020	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
Token: SeDebugPrivilege	1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
Token: SeDebugPrivilege	640	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
Token: SeDebugPrivilege	448	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 4020	1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe	92
PID 1096 wrote to memory of 4020	1096	9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe	92

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\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
"C:\Users\Admin\AppData\Local\Temp\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.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:1096
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3" /tr "C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4020

C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:640

C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:448

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3.exe

Filesize
89KB

MD5
7758ee1f6165c9cec1113f8b1b7c1b72

SHA1
5e5fa255f2e0c2eb0c02dd055ba0004292a8cf70

SHA256
9f70eceb0e6a3dc06079b42532fa03651e8f9e43140d6d7e4b6e4d2dea5486d3

SHA512
6a70f60b0ee566cb5d26f6fad36c440cca5d9f89fce2d3355b222b499b321b0fa4d4cdab74a4fd98d4286450235d7eaaf8bc0eef6a13d2404121428a657ef612

Download Submit
memory/640-15-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

Filesize
10.8MB

Download
memory/640-17-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

Filesize
10.8MB

Download
memory/1096-0-0x00007FFEAA183000-0x00007FFEAA185000-memory.dmp

Filesize
8KB

Download
memory/1096-1-0x0000000000EC0000-0x0000000000EDA000-memory.dmp

Filesize
104KB

Download
memory/1096-2-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

Filesize
10.8MB

Download
memory/1096-11-0x00007FFEAA183000-0x00007FFEAA185000-memory.dmp

Filesize
8KB

Download
memory/1096-12-0x00007FFEAA180000-0x00007FFEAAC41000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads