xworm | 1ff8fa09d7cd8aaa2a6f4f32965f25b2fcb0bd4993729ade01a16164389810c0

General

Target

nigger.exe
Size

41KB
MD5

7820f5d5245b72be9f24ed477f87287b
SHA1

84ce2f3d43accdfb55916e7ec6faf3cab9ed2497
SHA256

1ff8fa09d7cd8aaa2a6f4f32965f25b2fcb0bd4993729ade01a16164389810c0
SHA512

68d4561683a44f6b814d4e98e74b6c123323b98fb32f234b928146389d7c7c8af4987dd43d5dcb044edf293558e3c850dcf8e5c1e6a9e66a9e8741cf61cb7b2b
SSDEEP

768:cTFHrDMQVZYwCxJAuwKFjHKShtF5PG9+zqOwhj3EuX3:6wQEdrAulzKSTFI9+zqOwNFX3

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:38630

147.185.221.19:38630

bay-currencies.gl.at.ply.gg:38630

and-organized.gl.at.ply.gg:38630

community-excess.gl.at.ply.gg:38630

Mutex

uhdZU70lXCRBT2pC

Attributes

Install_directory
%AppData%
install_file
runbroker.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2952-0-0x0000000001130000-0x0000000001140000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\runbroker.exe	family_xworm
behavioral1/memory/2172-10-0x0000000001010000-0x0000000001020000-memory.dmp	family_xworm
behavioral1/memory/2652-15-0x0000000001190000-0x00000000011A0000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

nigger.exe

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

Executes dropped EXE 3 IoCs

Processes:

runbroker.exerunbroker.exerunbroker.exe

pid process

2172 runbroker.exe
2652 runbroker.exe
320 runbroker.exe

pid	process
2172	runbroker.exe
2652	runbroker.exe
320	runbroker.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

nigger.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\runbroker = "C:\\Users\\Admin\\AppData\\Roaming\\runbroker.exe"	nigger.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

4 ip-api.com
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

1196 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

nigger.exe

pid process

2952 nigger.exe

flow	ioc
4	ip-api.com

pid	process
1196	schtasks.exe

pid	process
2952	nigger.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

nigger.exerunbroker.exerunbroker.exerunbroker.exe

description	pid	process
Token: SeDebugPrivilege	2952	nigger.exe
Token: SeDebugPrivilege	2952	nigger.exe
Token: SeDebugPrivilege	2172	runbroker.exe
Token: SeDebugPrivilege	2652	runbroker.exe
Token: SeDebugPrivilege	320	runbroker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

nigger.exe

pid process

2952 nigger.exe

pid	process
2952	nigger.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

nigger.exetaskeng.exe

description	pid	process	target process
PID 2952 wrote to memory of 1196	2952	nigger.exe	schtasks.exe
PID 2952 wrote to memory of 1196	2952	nigger.exe	schtasks.exe
PID 2952 wrote to memory of 1196	2952	nigger.exe	schtasks.exe
PID 2000 wrote to memory of 2172	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 2172	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 2172	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 2652	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 2652	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 2652	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 320	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 320	2000	taskeng.exe	runbroker.exe
PID 2000 wrote to memory of 320	2000	taskeng.exe	runbroker.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\nigger.exe
"C:\Users\Admin\AppData\Local\Temp\nigger.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:2952

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "runbroker" /tr "C:\Users\Admin\AppData\Roaming\runbroker.exe"
2⤵
- Creates scheduled task(s)
PID:1196

C:\Windows\system32\taskeng.exe
taskeng.exe {5F1769E0-BCAB-40D1-B103-2BF5600F8516} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2000

C:\Users\Admin\AppData\Roaming\runbroker.exe
C:\Users\Admin\AppData\Roaming\runbroker.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2172

C:\Users\Admin\AppData\Roaming\runbroker.exe
C:\Users\Admin\AppData\Roaming\runbroker.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2652

C:\Users\Admin\AppData\Roaming\runbroker.exe
C:\Users\Admin\AppData\Roaming\runbroker.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:320

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\runbroker.exe
Filesize
41KB

MD5
7820f5d5245b72be9f24ed477f87287b

SHA1
84ce2f3d43accdfb55916e7ec6faf3cab9ed2497

SHA256
1ff8fa09d7cd8aaa2a6f4f32965f25b2fcb0bd4993729ade01a16164389810c0

SHA512
68d4561683a44f6b814d4e98e74b6c123323b98fb32f234b928146389d7c7c8af4987dd43d5dcb044edf293558e3c850dcf8e5c1e6a9e66a9e8741cf61cb7b2b

Download Submit
memory/2172-10-0x0000000001010000-0x0000000001020000-memory.dmp

Filesize
64KB

Download
memory/2652-15-0x0000000001190000-0x00000000011A0000-memory.dmp

Filesize
64KB

Download
memory/2952-0-0x0000000001130000-0x0000000001140000-memory.dmp

Filesize
64KB

Download
memory/2952-1-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2952-2-0x000000001B0F0000-0x000000001B170000-memory.dmp

Filesize
512KB

Download
memory/2952-11-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2952-12-0x000000001B0F0000-0x000000001B170000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads