xworm | dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948

General

Target

dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe
Size

68KB
MD5

dc09aad6c4769d9368f8fa4122091f6c
SHA1

f39bd3c6bc1ff8d46f8abc9dd8f1205e52162448
SHA256

dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948
SHA512

09d868e0d08e38d1d69e4e43d53f0ebf5e86a9f95528b095a32234e99b12135fa831919eae37ce17a671c02ea6665ff6187e1b560e0291d094fabbb4df782021
SSDEEP

1536:7G4OjORI6NHEv9Q6aY9I+b5mtRQs6h6RF6zOtqIwaj:/O0dN4tF9I+b5wRAO8IPj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
XClient.exe
pastebin_url
https://pastebin.com/raw/RpncwxSs

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2224-1-0x00000000008B0000-0x00000000008C8000-memory.dmp	family_xworm
behavioral1/files/0x003200000001875f-37.dat	family_xworm
behavioral1/memory/320-39-0x0000000001360000-0x0000000001378000-memory.dmp	family_xworm
behavioral1/memory/916-41-0x0000000001380000-0x0000000001398000-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
2836	powershell.exe
2752	powershell.exe
1980	powershell.exe
396	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe

Executes dropped EXE 2 IoCs

pid	Process
320	XClient.exe
916	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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
2	pastebin.com

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
2472	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2836	powershell.exe
2752	powershell.exe
1980	powershell.exe
396	powershell.exe
2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	2752	powershell.exe
Token: SeDebugPrivilege	1980	powershell.exe
Token: SeDebugPrivilege	396	powershell.exe
Token: SeDebugPrivilege	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe
Token: SeDebugPrivilege	320	XClient.exe
Token: SeDebugPrivilege	916	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2836	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	31
PID 2224 wrote to memory of 2836	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	31
PID 2224 wrote to memory of 2836	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	31
PID 2224 wrote to memory of 2752	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	33
PID 2224 wrote to memory of 2752	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	33
PID 2224 wrote to memory of 2752	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	33
PID 2224 wrote to memory of 1980	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	35
PID 2224 wrote to memory of 1980	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	35
PID 2224 wrote to memory of 1980	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	35
PID 2224 wrote to memory of 396	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	37
PID 2224 wrote to memory of 396	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	37
PID 2224 wrote to memory of 396	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	37
PID 2224 wrote to memory of 2472	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	39
PID 2224 wrote to memory of 2472	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	39
PID 2224 wrote to memory of 2472	2224	dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe	39
PID 2284 wrote to memory of 320	2284	taskeng.exe	42
PID 2284 wrote to memory of 320	2284	taskeng.exe	42
PID 2284 wrote to memory of 320	2284	taskeng.exe	42
PID 2284 wrote to memory of 916	2284	taskeng.exe	44
PID 2284 wrote to memory of 916	2284	taskeng.exe	44
PID 2284 wrote to memory of 916	2284	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\dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe
"C:\Users\Admin\AppData\Local\Temp\dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.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:2224
- 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\dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2836
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2752
- 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\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:396
- 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:2472

C:\Windows\system32\taskeng.exe
taskeng.exe {415F7559-37C0-4B19-8EAB-573A2101A249} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:320
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:916

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
95df864b5a352de7473553455168ccc8

SHA1
e4bbfa046b24fbabb306a34e4b2f2d163188d0eb

SHA256
67a82c2c04d68155cbdfa29a9b966958928a498a9b89c7ab632d3d4a76127ec0

SHA512
808e92f2beffb7c7b49da67e139fd3071df4e4a68d78677fe02362db863079f41b21fde96890d64bfa9e952e49f94e9080f5eb5d24a3cb010e59c05533000db9

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

Filesize
68KB

MD5
dc09aad6c4769d9368f8fa4122091f6c

SHA1
f39bd3c6bc1ff8d46f8abc9dd8f1205e52162448

SHA256
dd084eace8def7ec82b68be818d0ddaba7ba14752679dbbdc5d8af4c1fc9d948

SHA512
09d868e0d08e38d1d69e4e43d53f0ebf5e86a9f95528b095a32234e99b12135fa831919eae37ce17a671c02ea6665ff6187e1b560e0291d094fabbb4df782021

Download Submit
memory/320-39-0x0000000001360000-0x0000000001378000-memory.dmp

Filesize
96KB

Download
memory/916-41-0x0000000001380000-0x0000000001398000-memory.dmp

Filesize
96KB

Download
memory/2224-33-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

Filesize
4KB

Download
memory/2224-1-0x00000000008B0000-0x00000000008C8000-memory.dmp

Filesize
96KB

Download
memory/2224-0-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

Filesize
4KB

Download
memory/2224-34-0x000000001B260000-0x000000001B2E0000-memory.dmp

Filesize
512KB

Download
memory/2224-32-0x000000001B260000-0x000000001B2E0000-memory.dmp

Filesize
512KB

Download
memory/2752-14-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2752-15-0x0000000001C80000-0x0000000001C88000-memory.dmp

Filesize
32KB

Download
memory/2836-8-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/2836-7-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2836-6-0x0000000002A10000-0x0000000002A90000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads