xworm | b01bb940254688c9ff0f2f7e0acc73ac7aa6c0e01c80f9417524cf7150edadfa

Analysis

max time kernel
118s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 03:08

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General

Target

z842jxn2/z872jxn2.exe
Size

69KB
MD5

96d20619f6fca9f8ce04ee826bd49a1a
SHA1

bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7
SHA256

8df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48
SHA512

e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca
SSDEEP

1536:4piY3bmV6IfVQitW8n8aWPbQ40UqlSIgg6vgaOgy6x3c:uV3bmrfVQitX0bQ43IgROgy65c

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

195.35.2.168:7000

86.29.59.189:7000

72.59.79.119:7000

52.12.52.167:7000

16.39.62.122:7000

Attributes

Install_directory
%Public%
install_file
USB.exe
telegram
https://api.telegram.org/bot7082635030:AAGxz6qjNlJ3WqLSL0ZicFOCA9YHE32yRzQ/sendMessage?chat_id=6484754327

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral3/memory/2416-0-0x00000000003A0000-0x00000000003B8000-memory.dmp	family_xworm
behavioral3/files/0x000c000000012252-57.dat	family_xworm
behavioral3/memory/1380-59-0x00000000012A0000-0x00000000012B8000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk	z872jxn2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FileExplore.lnk	z872jxn2.exe

Executes dropped EXE 2 IoCs

pid	Process
1380	FileExplore
2252	FileExplore

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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\FileExplore = "C:\\Users\\Public\\FileExplore"	z872jxn2.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.

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

pid	Process
2520	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2416	z872jxn2.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2672	powershell.exe
2476	powershell.exe
2572	powershell.exe
2920	powershell.exe
2416	z872jxn2.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2416	z872jxn2.exe
Token: SeDebugPrivilege	2672	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2920	powershell.exe
Token: SeDebugPrivilege	2416	z872jxn2.exe
Token: SeDebugPrivilege	1380	FileExplore
Token: SeDebugPrivilege	2252	FileExplore

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2416	z872jxn2.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 2672	2416	z872jxn2.exe	29
PID 2416 wrote to memory of 2672	2416	z872jxn2.exe	29
PID 2416 wrote to memory of 2672	2416	z872jxn2.exe	29
PID 2416 wrote to memory of 2476	2416	z872jxn2.exe	31
PID 2416 wrote to memory of 2476	2416	z872jxn2.exe	31
PID 2416 wrote to memory of 2476	2416	z872jxn2.exe	31
PID 2416 wrote to memory of 2572	2416	z872jxn2.exe	33
PID 2416 wrote to memory of 2572	2416	z872jxn2.exe	33
PID 2416 wrote to memory of 2572	2416	z872jxn2.exe	33
PID 2416 wrote to memory of 2920	2416	z872jxn2.exe	35
PID 2416 wrote to memory of 2920	2416	z872jxn2.exe	35
PID 2416 wrote to memory of 2920	2416	z872jxn2.exe	35
PID 2416 wrote to memory of 2520	2416	z872jxn2.exe	37
PID 2416 wrote to memory of 2520	2416	z872jxn2.exe	37
PID 2416 wrote to memory of 2520	2416	z872jxn2.exe	37
PID 336 wrote to memory of 1380	336	taskeng.exe	42
PID 336 wrote to memory of 1380	336	taskeng.exe	42
PID 336 wrote to memory of 1380	336	taskeng.exe	42
PID 336 wrote to memory of 2252	336	taskeng.exe	43
PID 336 wrote to memory of 2252	336	taskeng.exe	43
PID 336 wrote to memory of 2252	336	taskeng.exe	43

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\z842jxn2\z872jxn2.exe
"C:\Users\Admin\AppData\Local\Temp\z842jxn2\z872jxn2.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2416
- 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\z842jxn2\z872jxn2.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2672
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'z872jxn2.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\FileExplore'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2572
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'FileExplore'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2920
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "FileExplore" /tr "C:\Users\Public\FileExplore"
  2⤵
  - Creates scheduled task(s)
  PID:2520

C:\Windows\system32\taskeng.exe
taskeng.exe {9ABDC104-6A83-4C92-BFE8-AFD794230E04} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:336
- C:\Users\Public\FileExplore
  C:\Users\Public\FileExplore
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1380
- C:\Users\Public\FileExplore
  C:\Users\Public\FileExplore
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2252

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
1e42f64f1a358b3d5f1728c24898ae8e

SHA1
95381548a4a8226ff57ef2956ed082b1f78095db

SHA256
ecf066d85c9dcb5ea56047e748642fca74f4d1f6d4bee9b37cf88b694d84a5a3

SHA512
70df0e57f40ec6b3cb813af1353e4f60f029c48f65e5db389675924f138fadf6ec7c2cf8f5fbaa76172b21bf7ec031c01c0785b5cfdc18ecf25b91df8283051e

Download Submit
C:\Users\Public\FileExplore

Filesize
69KB

MD5
96d20619f6fca9f8ce04ee826bd49a1a

SHA1
bbbb18c9c4a38dad5ce8cdc4dfc7bced7fa545e7

SHA256
8df2b4dae2428156b659ae3e080ee5bbb71ef51c26eb90341b23ebce1217ac48

SHA512
e21ef50bb1a94005ad42047c4f4ecafc5eaf56ff0ca682d79acaa885ed1f50cd1666ac98e7f111ab8879e8957ca982d2143613a12ae554308287cea901da8dca

Download Submit
memory/1380-61-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/1380-60-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/1380-59-0x00000000012A0000-0x00000000012B8000-memory.dmp

Filesize
96KB

Download
memory/2252-66-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2252-65-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2416-63-0x00000000020C0000-0x00000000020CC000-memory.dmp

Filesize
48KB

Download
memory/2416-51-0x000000001B490000-0x000000001B510000-memory.dmp

Filesize
512KB

Download
memory/2416-2-0x000000001B490000-0x000000001B510000-memory.dmp

Filesize
512KB

Download
memory/2416-0-0x00000000003A0000-0x00000000003B8000-memory.dmp

Filesize
96KB

Download
memory/2416-1-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2416-39-0x000007FEF5CE0000-0x000007FEF66CC000-memory.dmp

Filesize
9.9MB

Download
memory/2476-22-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-20-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/2476-23-0x0000000002AF0000-0x0000000002B70000-memory.dmp

Filesize
512KB

Download
memory/2476-25-0x0000000002AF0000-0x0000000002B70000-memory.dmp

Filesize
512KB

Download
memory/2476-26-0x0000000002AF0000-0x0000000002B70000-memory.dmp

Filesize
512KB

Download
memory/2476-24-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-27-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2476-21-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2572-33-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2572-36-0x0000000002AC0000-0x0000000002B40000-memory.dmp

Filesize
512KB

Download
memory/2572-37-0x0000000002AC4000-0x0000000002AC7000-memory.dmp

Filesize
12KB

Download
memory/2572-38-0x0000000002ACB000-0x0000000002B32000-memory.dmp

Filesize
412KB

Download
memory/2572-40-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2572-34-0x0000000002AC0000-0x0000000002B40000-memory.dmp

Filesize
512KB

Download
memory/2572-35-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2672-14-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2672-10-0x0000000002EB0000-0x0000000002F30000-memory.dmp

Filesize
512KB

Download
memory/2672-7-0x000000001B8A0000-0x000000001BB82000-memory.dmp

Filesize
2.9MB

Download
memory/2672-8-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download
memory/2672-9-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2672-12-0x0000000002EB0000-0x0000000002F30000-memory.dmp

Filesize
512KB

Download
memory/2672-11-0x000007FEEF670000-0x000007FEF000D000-memory.dmp

Filesize
9.6MB

Download
memory/2672-13-0x0000000002EB0000-0x0000000002F30000-memory.dmp

Filesize
512KB

Download
memory/2920-47-0x0000000002D40000-0x0000000002DC0000-memory.dmp

Filesize
512KB

Download
memory/2920-48-0x0000000002D44000-0x0000000002D47000-memory.dmp

Filesize
12KB

Download
memory/2920-46-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2920-52-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2920-49-0x000007FEEECD0000-0x000007FEEF66D000-memory.dmp

Filesize
9.6MB

Download
memory/2920-50-0x0000000002D4B000-0x0000000002DB2000-memory.dmp

Filesize
412KB

Download