xworm | e94a439b85ca5bc7d19dda9a6ea43d921c385f99dedf8b6a6560cb747e43e264

General

Target

Celestial.exe
Size

297KB
MD5

9b650b738d97c0e39717fe86401a6726
SHA1

34f361ab5024ad4390a3906cb3fff5a7b5f7e656
SHA256

e94a439b85ca5bc7d19dda9a6ea43d921c385f99dedf8b6a6560cb747e43e264
SHA512

a6664916c5c1bfd66e58face5c1811f95b6489c3e1d4728d4efee92233192fb145c8f0cca46582d560356b92732a8727794a7d8765d16c4df567eb5eb84b1e30
SSDEEP

6144:Ka4InuJg58BkgqPoDH49n8Bb/cQ/gW/tQtbgk3KlRWvWl/HrrACG7:Kat0EAH49n8BLgSZQKXW+l/HnACs

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

C2

engineering-thoroughly.gl.at.ply.gg:32901

20.ip.gl.ply.gg:32901

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\XClient.exe	family_xworm
\Users\Admin\AppData\Local\Temp\1Celestial.exe	family_xworm
behavioral1/memory/1876-31-0x0000000000EE0000-0x0000000000F0E000-memory.dmp	family_xworm
behavioral1/memory/2580-30-0x0000000000940000-0x0000000000956000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

1Celestial.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	1Celestial.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	1Celestial.exe

Executes dropped EXE 2 IoCs

Processes:

XClient.exe1Celestial.exe

pid process

2580 XClient.exe
1876 1Celestial.exe
Loads dropped DLL 8 IoCs

Processes:

Celestial.exe

pid process

2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.exe
2732 Celestial.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.

Processes:

flow ioc

2 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

Celestial.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Celestial.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

1Celestial.exeXClient.exe

description pid process

Token: SeDebugPrivilege 1876 1Celestial.exe
Token: SeDebugPrivilege 2580 XClient.exe
Token: SeDebugPrivilege 1876 1Celestial.exe

pid	process
2580	XClient.exe
1876	1Celestial.exe

pid	process
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe
2732	Celestial.exe

flow	ioc
2	ip-api.com

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Celestial.exe

description	pid	process
Token: SeDebugPrivilege	1876	1Celestial.exe
Token: SeDebugPrivilege	2580	XClient.exe
Token: SeDebugPrivilege	1876	1Celestial.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Celestial.exe

description	pid	process	target process
PID 2732 wrote to memory of 2580	2732	Celestial.exe	XClient.exe
PID 2732 wrote to memory of 2580	2732	Celestial.exe	XClient.exe
PID 2732 wrote to memory of 2580	2732	Celestial.exe	XClient.exe
PID 2732 wrote to memory of 2580	2732	Celestial.exe	XClient.exe
PID 2732 wrote to memory of 1876	2732	Celestial.exe	1Celestial.exe
PID 2732 wrote to memory of 1876	2732	Celestial.exe	1Celestial.exe
PID 2732 wrote to memory of 1876	2732	Celestial.exe	1Celestial.exe
PID 2732 wrote to memory of 1876	2732	Celestial.exe	1Celestial.exe

C:\Users\Admin\AppData\Local\Temp\Celestial.exe
"C:\Users\Admin\AppData\Local\Temp\Celestial.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- C:\Users\Admin\AppData\Local\Temp\XClient.exe
  "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2580
- C:\Users\Admin\AppData\Local\Temp\1Celestial.exe
  "C:\Users\Admin\AppData\Local\Temp\1Celestial.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\1Celestial.exe

Filesize
162KB

MD5
d726f0f603538577a7e12448419fed1a

SHA1
1ea8047f9e825c9dd648a12c98689e1c6ad11c70

SHA256
e4d2faf2aa895163625ea12416ce945b256f0e13b8327152d6eb80f3ee9fc332

SHA512
a9643b891d7a092799ee032c032daa0e1303f639a1893fe1ea7e2830cbae12dbb0d754ebe7bbedcb2396f6bfed5539a932c8f8726b7ff13e217fc39f630b7dfd

Download Submit
\Users\Admin\AppData\Local\Temp\XClient.exe

Filesize
66KB

MD5
2c2bf7640b13839dcffc5524e9ff6972

SHA1
4e91d65f34a33498b39419dbffee5efd8703ca05

SHA256
58588e19dac77c6689a6167865f9ad8f0fe531afbe4d66243d55f3e0e5a555c4

SHA512
980afa1660da3522c5a0d6296fb1fe9ddcb53dfa829d6d64bd9c63714147536c090f12c9f533e67187d5250b5a219a9c9aa876ee375995a2e1cb1dac1e6de65e

Download Submit
memory/1876-31-0x0000000000EE0000-0x0000000000F0E000-memory.dmp

Filesize
184KB

Download
memory/1876-36-0x0000000000440000-0x000000000044C000-memory.dmp

Filesize
48KB

Download
memory/1876-37-0x0000000000C40000-0x0000000000C4A000-memory.dmp

Filesize
40KB

Download
memory/2580-30-0x0000000000940000-0x0000000000956000-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