xworm | b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c

General

Target

b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe
Size

234KB
MD5

1927a5f9c4dc9980fa675135dc4c657d
SHA1

539199552b8d801266a0d9110af1e7382d6b6b50
SHA256

b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c
SHA512

7922a65ffe9883c2d621318e748efd02f5fe49200ccf66143d5363b21c1ee43260391443dc8b8cc850b893dcdb0abffa52e86c9f396e2867a3bd3816f45364ef
SSDEEP

6144:JNVsqclbIlOsUhcX7elbKTuq9bfF/H9d9n:JNiqGs3X3uO

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

est-review.gl.at.ply.gg:23712

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2160-1-0x00000000003A0000-0x00000000003E0000-memory.dmp	family_xworm
behavioral1/files/0x00080000000120f9-8.dat	family_xworm
behavioral1/memory/2860-10-0x00000000010F0000-0x0000000001130000-memory.dmp	family_xworm
behavioral1/memory/1688-16-0x00000000003C0000-0x0000000000400000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe

Executes dropped EXE 3 IoCs

pid	Process
2860	XClient.exe
1096	XClient.exe
1688	XClient.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.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
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe
Token: SeDebugPrivilege	2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe
Token: SeDebugPrivilege	2860	XClient.exe
Token: SeDebugPrivilege	1096	XClient.exe
Token: SeDebugPrivilege	1688	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2764	2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe	30
PID 2160 wrote to memory of 2764	2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe	30
PID 2160 wrote to memory of 2764	2160	b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe	30
PID 2560 wrote to memory of 2860	2560	taskeng.exe	33
PID 2560 wrote to memory of 2860	2560	taskeng.exe	33
PID 2560 wrote to memory of 2860	2560	taskeng.exe	33
PID 2560 wrote to memory of 1096	2560	taskeng.exe	34
PID 2560 wrote to memory of 1096	2560	taskeng.exe	34
PID 2560 wrote to memory of 1096	2560	taskeng.exe	34
PID 2560 wrote to memory of 1688	2560	taskeng.exe	35
PID 2560 wrote to memory of 1688	2560	taskeng.exe	35
PID 2560 wrote to memory of 1688	2560	taskeng.exe	35

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\b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.exe
"C:\Users\Admin\AppData\Local\Temp\b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c.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:2160
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2764

C:\Windows\system32\taskeng.exe
taskeng.exe {CBFC47DF-A29D-4393-A43F-D4DBB35C88DB} S-1-5-21-3551809350-4263495960-1443967649-1000:NNYJZAHP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1096
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1688

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\XClient.exe

Filesize
234KB

MD5
1927a5f9c4dc9980fa675135dc4c657d

SHA1
539199552b8d801266a0d9110af1e7382d6b6b50

SHA256
b280b6c393aa68413403f049e84e020ed7ba360bcf27a751bebc43cf5da5aa4c

SHA512
7922a65ffe9883c2d621318e748efd02f5fe49200ccf66143d5363b21c1ee43260391443dc8b8cc850b893dcdb0abffa52e86c9f396e2867a3bd3816f45364ef

Download Submit
memory/1688-16-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download
memory/2160-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/2160-1-0x00000000003A0000-0x00000000003E0000-memory.dmp

Filesize
256KB

Download
memory/2160-6-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2160-11-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp

Filesize
4KB

Download
memory/2160-12-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp

Filesize
9.9MB

Download
memory/2860-10-0x00000000010F0000-0x0000000001130000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads