xworm | 32f70eace4fb8d3d0711c104f7d9ed18a3e7b62c4eb44e6ee8fa2fef9101fb40

General

Target

XClient.exe
Size

78KB
MD5

08a0de0b53d4a1f754e89317e97cc876
SHA1

79aa570739ea7ce828df347852fe7cd7947eab73
SHA256

32f70eace4fb8d3d0711c104f7d9ed18a3e7b62c4eb44e6ee8fa2fef9101fb40
SHA512

b7d828778f4def78b0f6b8ec7112c1e002656aafae3e355cb5498155a898a5361dcd75fc2673111ace6aae7edd309b6aa2daa1eb9d9503ddc693de4a21a22423
SSDEEP

1536:EruZeKyBO87fRW6IxjbXtL6Kvvqsu6wGistrOO7XTZqAATQ:CuYHB5Wdhb9Lz3wOpqRQ

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

daily-lawn.gl.at.ply.gg:28256

Attributes

Install_directory
%Public%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1192-0-0x00000000013E0000-0x00000000013FA000-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\XClient.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	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-1-5-21-2610426812-2871295383-373749122-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Public\\XClient.exe"	XClient.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
2	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2540	powershell.exe
2732	powershell.exe
2428	powershell.exe
764	powershell.exe
1192	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	XClient.exe
Token: SeDebugPrivilege	2540	powershell.exe
Token: SeDebugPrivilege	2732	powershell.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	764	powershell.exe
Token: SeDebugPrivilege	1192	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1192	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 2540	1192	XClient.exe	29
PID 1192 wrote to memory of 2540	1192	XClient.exe	29
PID 1192 wrote to memory of 2540	1192	XClient.exe	29
PID 1192 wrote to memory of 2732	1192	XClient.exe	31
PID 1192 wrote to memory of 2732	1192	XClient.exe	31
PID 1192 wrote to memory of 2732	1192	XClient.exe	31
PID 1192 wrote to memory of 2428	1192	XClient.exe	33
PID 1192 wrote to memory of 2428	1192	XClient.exe	33
PID 1192 wrote to memory of 2428	1192	XClient.exe	33
PID 1192 wrote to memory of 764	1192	XClient.exe	35
PID 1192 wrote to memory of 764	1192	XClient.exe	35
PID 1192 wrote to memory of 764	1192	XClient.exe	35

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.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:1192
- 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\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

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
7d222b8f41d228f5a269409eaa3dcadc

SHA1
d820d748609e1428ee081c2b97b1acd80833acd6

SHA256
a5d0abc2c880372ad26e0ea68a1840b5984620d5bb4a1010456ed71977c04429

SHA512
cdd62657588497fc8dee5a4c310e82b156a0efbbb27a131244889ce8172128d7a6a82d9ea3dbc6039e311818c50d6047ec0fae29fbf4335de903f6676150123d

Download Submit
memory/764-49-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/764-54-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/764-53-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/764-52-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/764-51-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/764-50-0x0000000002650000-0x00000000026D0000-memory.dmp

Filesize
512KB

Download
memory/764-55-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/1192-39-0x000007FEF4FE0000-0x000007FEF59CC000-memory.dmp

Filesize
9.9MB

Download
memory/1192-0-0x00000000013E0000-0x00000000013FA000-memory.dmp

Filesize
104KB

Download
memory/1192-2-0x000000001B250000-0x000000001B2D0000-memory.dmp

Filesize
512KB

Download
memory/1192-1-0x000007FEF4FE0000-0x000007FEF59CC000-memory.dmp

Filesize
9.9MB

Download
memory/2428-43-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2428-42-0x000000000289B000-0x0000000002902000-memory.dmp

Filesize
412KB

Download
memory/2428-40-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/2428-41-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/2428-38-0x0000000002890000-0x0000000002910000-memory.dmp

Filesize
512KB

Download
memory/2428-37-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2428-36-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2540-13-0x00000000024B0000-0x0000000002530000-memory.dmp

Filesize
512KB

Download
memory/2540-15-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2540-7-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2540-9-0x000000001B2D0000-0x000000001B5B2000-memory.dmp

Filesize
2.9MB

Download
memory/2540-8-0x00000000024B0000-0x0000000002530000-memory.dmp

Filesize
512KB

Download
memory/2540-10-0x0000000002410000-0x0000000002418000-memory.dmp

Filesize
32KB

Download
memory/2540-11-0x000007FEEDF10000-0x000007FEEE8AD000-memory.dmp

Filesize
9.6MB

Download
memory/2540-12-0x00000000024B0000-0x0000000002530000-memory.dmp

Filesize
512KB

Download
memory/2540-14-0x00000000024B0000-0x0000000002530000-memory.dmp

Filesize
512KB

Download
memory/2732-25-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download
memory/2732-21-0x000000001B410000-0x000000001B6F2000-memory.dmp

Filesize
2.9MB

Download
memory/2732-23-0x00000000022F0000-0x00000000022F8000-memory.dmp

Filesize
32KB

Download
memory/2732-22-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/2732-24-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download
memory/2732-29-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/2732-26-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download
memory/2732-27-0x000007FEED570000-0x000007FEEDF0D000-memory.dmp

Filesize
9.6MB

Download
memory/2732-28-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads