xworm | 4429897443b2487541fd7063992869780105c792b9c3903bdd93390a90941453

Analysis

max time kernel
45s
max time network
49s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 20:21

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General

Target

Solara_Bootstrap.exe
Size

701.0MB
MD5

a4dea35bbfedaf715edf928c850f9062
SHA1

9d6fdbd7d96663b54c14182654a4742b11728743
SHA256

e5700337351ecb04be3ac19ab2875a2f810a42a11bc1c3a6cdfb6a20c021c346
SHA512

6cce303a11105bbab1a903549a6a830612b2a642b00d790065143eef5b3e7a494369a7bb330d6cd1a3988e00573d8785aad1a19dff798379b01dd7a8883d4297
SSDEEP

768:t45Ckp/PlWm8WHU6QVySGPoD81umA2SXCY5t2tzskOshCPwiE:/kpcml0fioQfGQ5sCht

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Attributes

install_file
System Volume Information Prefetch.exe
pastebin_url
https://pastebin.com/raw/ZpWEzbQr

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012117-8.dat	family_xworm
behavioral1/memory/2868-9-0x0000000001350000-0x0000000001366000-memory.dmp	family_xworm

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

Executes dropped EXE 1 IoCs

pid	Process
2868	grabber.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	pastebin.com
9	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
4	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2196	Solara_Bootstrap.exe
2196	Solara_Bootstrap.exe
2196	Solara_Bootstrap.exe
2868	grabber.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2196	Solara_Bootstrap.exe
Token: SeDebugPrivilege	2868	grabber.exe
Token: SeDebugPrivilege	2868	grabber.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2868	grabber.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2868	2196	Solara_Bootstrap.exe	31
PID 2196 wrote to memory of 2868	2196	Solara_Bootstrap.exe	31
PID 2196 wrote to memory of 2868	2196	Solara_Bootstrap.exe	31

C:\Users\Admin\AppData\Local\Temp\Solara_Bootstrap.exe
"C:\Users\Admin\AppData\Local\Temp\Solara_Bootstrap.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Users\Admin\AppData\Local\Temp\grabber.exe
  "C:\Users\Admin\AppData\Local\Temp\grabber.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\grabber.exe

Filesize
62KB

MD5
5d905f7756242de1e3da56be2eebe5bc

SHA1
381d6fa5479211cfb12a9139b6532a99a9be9271

SHA256
c930a13333fa6a399179bc6cae01ee2702bfae5dfa65656e7989409b54b1dedd

SHA512
a3623368b5aeda117b9e81561bc24d81503295d9f01c13e2204983178c790c5cc4c98bd1bb3ed28fcdf92dc63bdf933a642169d866ec9515ebdecbe625ec7366

Download Submit
memory/2196-0-0x000007FEF6473000-0x000007FEF6474000-memory.dmp

Filesize
4KB

Download
memory/2196-1-0x00000000003F0000-0x0000000000404000-memory.dmp

Filesize
80KB

Download
memory/2196-2-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/2196-12-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/2868-9-0x0000000001350000-0x0000000001366000-memory.dmp

Filesize
88KB

Download
memory/2868-10-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/2868-11-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/2868-13-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download
memory/2868-14-0x000007FEF6470000-0x000007FEF6E5C000-memory.dmp

Filesize
9.9MB

Download