xworm | 78d028497bd2554918578486b296d3f60985b87a0c423bd0048aab8768273427

Analysis

max time kernel
147s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/10/2024, 19:33

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General

Target

IcarusRDP_builder-main/Addon/explorer.exe
Size

103KB
MD5

2bb438f0ee9a0d25dc671d23fd406922
SHA1

bfca33b343502bbdd9262069a89d526b37eb4717
SHA256

084bbe29892a4ee5063027533d4e793a6f689d3dbfe959b0e30bf03e375bcc53
SHA512

7a2cb14167899368d437cc3638fa420cbd3a6b9fcf5afaaad3186da12f5518effe78b6b4e06af770cf24c4cfb64e9d1d9c089fe1c7a8c231c1818d8556d1b4bb
SSDEEP

1536:NPkG0f9sc1Osw7oifKxZtW6CbqQf0aqu:NMG0f9sc1OFNKx9Cbnb

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

ifestos.duckdns.org:4449

Mutex

mtgbeTEFSBYScDUd

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral13/memory/2068-1-0x0000000000330000-0x0000000000350000-memory.dmp	family_xworm
behavioral13/files/0x0035000000016dd5-8.dat	family_xworm
behavioral13/memory/2760-10-0x0000000000890000-0x00000000008B0000-memory.dmp	family_xworm
behavioral13/memory/2652-12-0x0000000000C40000-0x0000000000C60000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2760	explorer.exe
2652	explorer.exe
1876	explorer.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe"	explorer.exe

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
2904	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	explorer.exe
Token: SeDebugPrivilege	2760	explorer.exe
Token: SeDebugPrivilege	2652	explorer.exe
Token: SeDebugPrivilege	1876	explorer.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 2904	2068	explorer.exe	30
PID 2068 wrote to memory of 2904	2068	explorer.exe	30
PID 2068 wrote to memory of 2904	2068	explorer.exe	30
PID 2952 wrote to memory of 2760	2952	taskeng.exe	33
PID 2952 wrote to memory of 2760	2952	taskeng.exe	33
PID 2952 wrote to memory of 2760	2952	taskeng.exe	33
PID 2952 wrote to memory of 2652	2952	taskeng.exe	35
PID 2952 wrote to memory of 2652	2952	taskeng.exe	35
PID 2952 wrote to memory of 2652	2952	taskeng.exe	35
PID 2952 wrote to memory of 1876	2952	taskeng.exe	36
PID 2952 wrote to memory of 1876	2952	taskeng.exe	36
PID 2952 wrote to memory of 1876	2952	taskeng.exe	36

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\IcarusRDP_builder-main\Addon\explorer.exe
"C:\Users\Admin\AppData\Local\Temp\IcarusRDP_builder-main\Addon\explorer.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "explorer" /tr "C:\Users\Admin\AppData\Roaming\explorer.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2904

C:\Windows\system32\taskeng.exe
taskeng.exe {651ED465-9EB7-47A6-9A09-78DE6CDC7BA3} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Roaming\explorer.exe
  C:\Users\Admin\AppData\Roaming\explorer.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Users\Admin\AppData\Roaming\explorer.exe
  C:\Users\Admin\AppData\Roaming\explorer.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2652
- C:\Users\Admin\AppData\Roaming\explorer.exe
  C:\Users\Admin\AppData\Roaming\explorer.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\explorer.exe

Filesize
103KB

MD5
2bb438f0ee9a0d25dc671d23fd406922

SHA1
bfca33b343502bbdd9262069a89d526b37eb4717

SHA256
084bbe29892a4ee5063027533d4e793a6f689d3dbfe959b0e30bf03e375bcc53

SHA512
7a2cb14167899368d437cc3638fa420cbd3a6b9fcf5afaaad3186da12f5518effe78b6b4e06af770cf24c4cfb64e9d1d9c089fe1c7a8c231c1818d8556d1b4bb

Download Submit
memory/2068-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/2068-1-0x0000000000330000-0x0000000000350000-memory.dmp

Filesize
128KB

Download
memory/2068-5-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2068-6-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2652-12-0x0000000000C40000-0x0000000000C60000-memory.dmp

Filesize
128KB

Download
memory/2760-10-0x0000000000890000-0x00000000008B0000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads