xworm | 42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64

General

Target

78423879243879234879423879243879342847932243897.exe
Size

167KB
MD5

6d9feaf76fb62e070d958c0170dc1fd9
SHA1

d3c9de15d3f268edc65bf0000a8bdb23d6eb8487
SHA256

42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64
SHA512

6e28413715712aa91859d941ff3d16ca4a2a05ff745f30cf5b34cc1cb87a72b0985a4f525867a5abfc980abf75d59ce9c025e894565040a03deb40410ac68c5a
SSDEEP

3072:Fx9KDUpvI+bkT8wDOP1qBz65/M6If+3Js+3JFkKeTnY:F2DU9pbbqxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

45.88.91.55:8893

Attributes

Install_directory
%ProgramData%
install_file
sys-32.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2020-1-0x00000000008A0000-0x00000000008D0000-memory.dmp	family_xworm
behavioral1/files/0x000b00000001755b-35.dat	family_xworm
behavioral1/memory/1940-36-0x0000000000EE0000-0x0000000000F10000-memory.dmp	family_xworm
behavioral1/memory/3044-39-0x00000000002C0000-0x00000000002F0000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1648	powershell.exe
2508	powershell.exe
2192	powershell.exe
2708	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sys-32.lnk	78423879243879234879423879243879342847932243897.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sys-32.lnk	78423879243879234879423879243879342847932243897.exe

Executes dropped EXE 2 IoCs

pid	Process
1940	sys-32.exe
3044	sys-32.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\sys-32 = "C:\\ProgramData\\sys-32.exe"	78423879243879234879423879243879342847932243897.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
2712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1648	powershell.exe
2508	powershell.exe
2192	powershell.exe
2708	powershell.exe
2020	78423879243879234879423879243879342847932243897.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2020	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	1648	powershell.exe
Token: SeDebugPrivilege	2508	powershell.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	2708	powershell.exe
Token: SeDebugPrivilege	2020	78423879243879234879423879243879342847932243897.exe
Token: SeDebugPrivilege	1940	sys-32.exe
Token: SeDebugPrivilege	3044	sys-32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2020	78423879243879234879423879243879342847932243897.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 1648	2020	78423879243879234879423879243879342847932243897.exe	31
PID 2020 wrote to memory of 1648	2020	78423879243879234879423879243879342847932243897.exe	31
PID 2020 wrote to memory of 1648	2020	78423879243879234879423879243879342847932243897.exe	31
PID 2020 wrote to memory of 2508	2020	78423879243879234879423879243879342847932243897.exe	33
PID 2020 wrote to memory of 2508	2020	78423879243879234879423879243879342847932243897.exe	33
PID 2020 wrote to memory of 2508	2020	78423879243879234879423879243879342847932243897.exe	33
PID 2020 wrote to memory of 2192	2020	78423879243879234879423879243879342847932243897.exe	35
PID 2020 wrote to memory of 2192	2020	78423879243879234879423879243879342847932243897.exe	35
PID 2020 wrote to memory of 2192	2020	78423879243879234879423879243879342847932243897.exe	35
PID 2020 wrote to memory of 2708	2020	78423879243879234879423879243879342847932243897.exe	37
PID 2020 wrote to memory of 2708	2020	78423879243879234879423879243879342847932243897.exe	37
PID 2020 wrote to memory of 2708	2020	78423879243879234879423879243879342847932243897.exe	37
PID 2020 wrote to memory of 2712	2020	78423879243879234879423879243879342847932243897.exe	39
PID 2020 wrote to memory of 2712	2020	78423879243879234879423879243879342847932243897.exe	39
PID 2020 wrote to memory of 2712	2020	78423879243879234879423879243879342847932243897.exe	39
PID 2012 wrote to memory of 1940	2012	taskeng.exe	43
PID 2012 wrote to memory of 1940	2012	taskeng.exe	43
PID 2012 wrote to memory of 1940	2012	taskeng.exe	43
PID 2012 wrote to memory of 3044	2012	taskeng.exe	44
PID 2012 wrote to memory of 3044	2012	taskeng.exe	44
PID 2012 wrote to memory of 3044	2012	taskeng.exe	44

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\78423879243879234879423879243879342847932243897.exe
"C:\Users\Admin\AppData\Local\Temp\78423879243879234879423879243879342847932243897.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:2020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\78423879243879234879423879243879342847932243897.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1648
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '78423879243879234879423879243879342847932243897.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2508
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\sys-32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2192
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sys-32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2708
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "sys-32" /tr "C:\ProgramData\sys-32.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2712

C:\Windows\system32\taskeng.exe
taskeng.exe {2D2A3A89-C6C3-4770-B167-61A7B96F1BAC} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2012
- C:\ProgramData\sys-32.exe
  C:\ProgramData\sys-32.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1940
- C:\ProgramData\sys-32.exe
  C:\ProgramData\sys-32.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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:\ProgramData\sys-32.exe

Filesize
167KB

MD5
6d9feaf76fb62e070d958c0170dc1fd9

SHA1
d3c9de15d3f268edc65bf0000a8bdb23d6eb8487

SHA256
42101b053272c4cb236c059a6a4b168b48e747d59819e28998736db1e8580f64

SHA512
6e28413715712aa91859d941ff3d16ca4a2a05ff745f30cf5b34cc1cb87a72b0985a4f525867a5abfc980abf75d59ce9c025e894565040a03deb40410ac68c5a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
3c04df0d41ecdb9763ff77a4681b1a2b

SHA1
b4591c2e2f5a132a300cbc2b3e49eb0b415f7558

SHA256
6ecbd45f51650eca182cf605da66e931c820bacef9fd9fa6f46f3e0585d70676

SHA512
c8c29bf5964ee39a6909f9f9377ed1474f91258125164962730b60e4f73e77b4cd324ab85362ef0e83a2098bb9b97a33781a1044323d5c788296d522fccb6271

Download Submit
memory/1648-6-0x0000000002900000-0x0000000002980000-memory.dmp

Filesize
512KB

Download
memory/1648-7-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/1648-8-0x0000000002870000-0x0000000002878000-memory.dmp

Filesize
32KB

Download
memory/1940-36-0x0000000000EE0000-0x0000000000F10000-memory.dmp

Filesize
192KB

Download
memory/2020-31-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2020-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2020-32-0x000000001B1F0000-0x000000001B270000-memory.dmp

Filesize
512KB

Download
memory/2020-1-0x00000000008A0000-0x00000000008D0000-memory.dmp

Filesize
192KB

Download
memory/2508-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2508-14-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/3044-39-0x00000000002C0000-0x00000000002F0000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads