xworm | 1cf4d4852822a36a9c57c64e0a4a7c14c27751b448910f841e0733f586239814

Analysis

max time kernel
28s
max time network
31s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
11-05-2024 09:52

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General

Target

fr2nnk.exe
Size

32KB
MD5

8d8bb72d313438d850c0fd079314e867
SHA1

7c3adc8b21b1404e506af0ba332a84f50f502038
SHA256

17ed10cc2d0e8a27b3823d7fdbe56a8a126e6b89f104e217d6d569fdfd88a679
SHA512

ed08efba52b9dcbf132e02a174e3526bd343145801367570d8bceac1a156582d553019a6e0df25afbacf620fc0d9c7543f0b52696fefb658a6060cc6ceddac49
SSDEEP

768:P1Xm1TliVBx7XDH4tyIJ8phhFyr9UBOjhe2Qx8:P1XmplgXHEJoFY9UBOjTQx8

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.0

else-movers.gl.at.ply.gg:28764

Mutex

iXKagAiYnmlygFVn

Attributes

Install_directory
%LocalAppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral4/memory/3772-1-0x0000000000F70000-0x0000000000F7E000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

fr2nnk.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fr2nnk.lnk	fr2nnk.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fr2nnk.lnk	fr2nnk.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

fr2nnk.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\fr2nnk = "C:\\Users\\Admin\\AppData\\Local\\fr2nnk.exe"	fr2nnk.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fr2nnk.exe

description pid process

Token: SeDebugPrivilege 3772 fr2nnk.exe
Token: SeDebugPrivilege 3772 fr2nnk.exe

description	pid	process
Token: SeDebugPrivilege	3772	fr2nnk.exe
Token: SeDebugPrivilege	3772	fr2nnk.exe

C:\Users\Admin\AppData\Local\Temp\fr2nnk.exe
"C:\Users\Admin\AppData\Local\Temp\fr2nnk.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:3772

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/3772-0-0x00007FFA858C3000-0x00007FFA858C5000-memory.dmp

Filesize
8KB

Download
memory/3772-1-0x0000000000F70000-0x0000000000F7E000-memory.dmp

Filesize
56KB

Download
memory/3772-8-0x00007FFA858C0000-0x00007FFA86382000-memory.dmp

Filesize
10.8MB

Download
memory/3772-9-0x00007FFA858C0000-0x00007FFA86382000-memory.dmp

Filesize
10.8MB

Download