xworm | c2a299f988158d07a573a21621b00b1577b7c232f91c1442ba30d272e4414c5d

General

Target

tmp.exe
Size

75KB
MD5

4c2a997fa2661fbfe14db1233b16364c
SHA1

e48025dbd61de286e13b25b144bf4da5da62761a
SHA256

c2a299f988158d07a573a21621b00b1577b7c232f91c1442ba30d272e4414c5d
SHA512

529a26f4769c7be0986e16d8e0bf37632b7b723a3e8d9fa8bb3f9cc4d766bd4d24a802d6aa43fe4df85c23cd680b0188c7e1eaff443a30203b298ba916aa0a57
SSDEEP

1536:pnqs5zV1jXp4csu1Pzs+AJKZbDjlnOl4KpqC3DOjFt/zN:Bn5nZJ/ZbnsWKpf3DOjHN

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

C2

needforrat.hopto.org:7000

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1664-0-0x0000000000340000-0x000000000035A000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\tmp.exe	family_xworm
behavioral1/memory/2464-16-0x00000000013E0000-0x00000000013FA000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

tmp.exe

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

Executes dropped EXE 2 IoCs

Processes:

tmp.exetmp.exe

pid process

2464 tmp.exe
1956 tmp.exe

pid	process
2464	tmp.exe
1956	tmp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\tmp = "C:\\Users\\Admin\\AppData\\Roaming\\tmp.exe"	tmp.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2496 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

tmp.exe

pid process

1664 tmp.exe

pid	process
2496	schtasks.exe

pid	process
1664	tmp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

tmp.exetmp.exetmp.exe

description	pid	process
Token: SeDebugPrivilege	1664	tmp.exe
Token: SeDebugPrivilege	1664	tmp.exe
Token: SeDebugPrivilege	2464	tmp.exe
Token: SeDebugPrivilege	1956	tmp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

tmp.exe

pid process

1664 tmp.exe

pid	process
1664	tmp.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

tmp.exetaskeng.exe

description	pid	process	target process
PID 1664 wrote to memory of 2496	1664	tmp.exe	schtasks.exe
PID 1664 wrote to memory of 2496	1664	tmp.exe	schtasks.exe
PID 1664 wrote to memory of 2496	1664	tmp.exe	schtasks.exe
PID 2316 wrote to memory of 2464	2316	taskeng.exe	tmp.exe
PID 2316 wrote to memory of 2464	2316	taskeng.exe	tmp.exe
PID 2316 wrote to memory of 2464	2316	taskeng.exe	tmp.exe
PID 2316 wrote to memory of 1956	2316	taskeng.exe	tmp.exe
PID 2316 wrote to memory of 1956	2316	taskeng.exe	tmp.exe
PID 2316 wrote to memory of 1956	2316	taskeng.exe	tmp.exe

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\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "tmp" /tr "C:\Users\Admin\AppData\Roaming\tmp.exe"
2⤵
- Creates scheduled task(s)
PID:2496

C:\Windows\system32\taskeng.exe
taskeng.exe {B6F4B5B2-54F7-48A5-8D92-15633F87E616} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2316

C:\Users\Admin\AppData\Roaming\tmp.exe
C:\Users\Admin\AppData\Roaming\tmp.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2464

C:\Users\Admin\AppData\Roaming\tmp.exe
C:\Users\Admin\AppData\Roaming\tmp.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1956

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Roaming\tmp.exe
Filesize
75KB

MD5
4c2a997fa2661fbfe14db1233b16364c

SHA1
e48025dbd61de286e13b25b144bf4da5da62761a

SHA256
c2a299f988158d07a573a21621b00b1577b7c232f91c1442ba30d272e4414c5d

SHA512
529a26f4769c7be0986e16d8e0bf37632b7b723a3e8d9fa8bb3f9cc4d766bd4d24a802d6aa43fe4df85c23cd680b0188c7e1eaff443a30203b298ba916aa0a57

Download Submit
memory/1664-0-0x0000000000340000-0x000000000035A000-memory.dmp

Filesize
104KB

Download
memory/1664-1-0x000007FEF5A40000-0x000007FEF642C000-memory.dmp

Filesize
9.9MB

Download
memory/1664-10-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/1664-11-0x000007FEF5A40000-0x000007FEF642C000-memory.dmp

Filesize
9.9MB

Download
memory/1664-12-0x000000001B1D0000-0x000000001B250000-memory.dmp

Filesize
512KB

Download
memory/2464-16-0x00000000013E0000-0x00000000013FA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads