xworm | ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18

General

Target

ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
Size

37KB
MD5

d8dfc68d21a7cdd095bc03963a8b2fb0
SHA1

7d132da41aa0180c5895132e559f6245f1feacbc
SHA256

ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18
SHA512

32080903a12794c3e60d8572a7c50b693a5f988fabd1679bbcce9e1bba2a6e038fa023ad95b95dd00d14e08b1ea95194ce03e371bef29b67be4a2c01872c8637
SSDEEP

768:ztGRiYTgP/NNo5GfjS61216La/FP192iOphi7X:zkRi+gsGu6McLgFt92iOpeX

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

role-fresh.gl.at.ply.gg:2522

Mutex

tZ4Yyzni0aPUlFjz

Attributes

Install_directory
%ProgramData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1828-1-0x00000000003E0000-0x00000000003F0000-memory.dmp	family_xworm
behavioral2/files/0x000c000000023b73-8.dat	family_xworm

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.lnk	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.lnk	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe

Executes dropped EXE 2 IoCs

pid	Process
800	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
3992	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N = "C:\\ProgramData\\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe"	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.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
3444	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
Token: SeDebugPrivilege	1828	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
Token: SeDebugPrivilege	800	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
Token: SeDebugPrivilege	3992	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 3444	1828	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe	91
PID 1828 wrote to memory of 3444	1828	ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe	91

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\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
"C:\Users\Admin\AppData\Local\Temp\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N" /tr "C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3444

C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:800

C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe

Filesize
37KB

MD5
d8dfc68d21a7cdd095bc03963a8b2fb0

SHA1
7d132da41aa0180c5895132e559f6245f1feacbc

SHA256
ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18

SHA512
32080903a12794c3e60d8572a7c50b693a5f988fabd1679bbcce9e1bba2a6e038fa023ad95b95dd00d14e08b1ea95194ce03e371bef29b67be4a2c01872c8637

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\ac9ef83f6d6ae646a08a97ecfe311a8beddacc41e0add58f8516b657f627ee18N.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
memory/800-14-0x00007FF987C20000-0x00007FF9886E1000-memory.dmp

Filesize
10.8MB

Download
memory/800-17-0x00007FF987C20000-0x00007FF9886E1000-memory.dmp

Filesize
10.8MB

Download
memory/1828-0-0x00007FF987C23000-0x00007FF987C25000-memory.dmp

Filesize
8KB

Download
memory/1828-1-0x00000000003E0000-0x00000000003F0000-memory.dmp

Filesize
64KB

Download
memory/1828-10-0x00007FF987C20000-0x00007FF9886E1000-memory.dmp

Filesize
10.8MB

Download
memory/1828-11-0x00007FF987C20000-0x00007FF9886E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads