xworm | a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff

General

Target

a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe
Size

6.4MB
MD5

fd9e0297a3481184eadd1da037253980
SHA1

23fc94ab1e1df30b6b9d988461f8a9d85e1ae4ca
SHA256

a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff
SHA512

e44545b127a0ddadec79fbcf9633fb56782dc80614b899d6db744852038dcb1aed1d47cb017c55d47ce62980e366f4e288d9bf7b52669fe08638f886f3da1904
SSDEEP

196608:AB1D4Z5XqQSmFQB2QGYCa5ZOBhe2wuF0:aUXImFI4YCakB05r

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.0

C2

147.185.221.25:6864

Mutex

aaF53Xl91CZagti1

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012266-6.dat	family_xworm
behavioral1/memory/2184-11-0x0000000000EA0000-0x0000000000EAE000-memory.dmp	family_xworm

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

.NET Reactor proctector 2 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/files/0x000b000000016cab-14.dat	net_reactor
behavioral1/memory/2956-16-0x00000000010D0000-0x00000000017FA000-memory.dmp	net_reactor

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2184	XWorm Info.exe
2956	XWorm V3.0.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\XWorm Info = "C:\\Users\\Admin\\AppData\\Local\\Temp\\XWorm Info.exe"	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\XWorm Info = "C:\\Users\\Admin\\AppData\\Roaming\\XWorm Info.exe"	XWorm Info.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
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: GetForegroundWindowSpam 1 IoCs

pid	Process
2956	XWorm V3.0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	XWorm Info.exe
Token: SeDebugPrivilege	2184	XWorm Info.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2184	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	30
PID 1740 wrote to memory of 2184	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	30
PID 1740 wrote to memory of 2184	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	30
PID 1740 wrote to memory of 2956	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	31
PID 1740 wrote to memory of 2956	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	31
PID 1740 wrote to memory of 2956	1740	a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe	31

C:\Users\Admin\AppData\Local\Temp\a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe
"C:\Users\Admin\AppData\Local\Temp\a36885c797f9c9c2970c185c103953c6c1f86a5d49606bf675fdf01c2d32d9ff.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\XWorm Info.exe
  "C:\Users\Admin\AppData\Local\Temp\XWorm Info.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:2184
- C:\Users\Admin\AppData\Local\Temp\XWorm V3.0.exe
  "C:\Users\Admin\AppData\Local\Temp\XWorm V3.0.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\XWorm Info.exe

Filesize
34KB

MD5
1e628185b7962dae0db3031acaa8ca9a

SHA1
d50590ac9fd7876ba5b3a551a7c2ca931a30a008

SHA256
8a0e03bade1b0cd0fcf9771db9ec4e1af3be04a0516f8b59ef196c7ebdbbe3ee

SHA512
faa645f3ed6d6c0dbfd7b688007d289a58ae334e41cda9883cc64a2f682a2172c5da706d1ebb0c1f21ea642876c7fb2fd0dd7d07e673c93ede3e43c31c58181e

Download Submit
C:\Users\Admin\AppData\Local\Temp\XWorm V3.0.exe

Filesize
7.1MB

MD5
71b0bb52ae4137c3e40dc802711e2acc

SHA1
e154869a5725806c2b12866479be8cf326d52116

SHA256
d1b0cb76d6ff1e54e5669cc3ba76ba6224be19e721cc61a9e223a596a9bb332f

SHA512
eea4513a347d9b2a5ee700388c34d9677869702384128b57e3299cff277b585fd713f4b44830c79da2b74ecc138d99c8aec9b4757d9dda6d3fa475a1dfdb6588

Download Submit
memory/1740-5-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-1-0x00000000002A0000-0x0000000000908000-memory.dmp

Filesize
6.4MB

Download
memory/1740-0-0x000007FEF5A63000-0x000007FEF5A64000-memory.dmp

Filesize
4KB

Download
memory/1740-17-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-9-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-11-0x0000000000EA0000-0x0000000000EAE000-memory.dmp

Filesize
56KB

Download
memory/2184-18-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-25-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2184-29-0x000007FEF5A60000-0x000007FEF644C000-memory.dmp

Filesize
9.9MB

Download
memory/2956-16-0x00000000010D0000-0x00000000017FA000-memory.dmp

Filesize
7.2MB

Download
memory/2956-19-0x000000001EA00000-0x000000001F516000-memory.dmp

Filesize
11.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads