xworm | bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2

Reason

Machine shutdown

General

Target

XClient.exe
Size

65KB
MD5

f4e5f696d570d7941c3501411c0d1d6c
SHA1

4a22f1fc9571cf7da21df2eeb3db4d9af5ba5bee
SHA256

bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2
SHA512

9f21975b2eb8bc01d3fd7c18db02cf67cb1092013deac99842fb7868a213f23fcbc1cd37527b357be1447c332ed2b29dfc3e19925a5f654a6a1771a1ee9290e4
SSDEEP

1536:/o4f+hIhZduTpNj/PjkbFFUprp5QaN6GOIrma1:DxhqvkbFufpOIyk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

sponef159-35748.portmap.host:7809

Attributes

Install_directory
%AppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7508868671:AAG6XIOhz39IrQIUnjub1TKVOVZHfdjpsvM/sendMessage?chat_id=6094400048

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2428-1-0x0000000000F10000-0x0000000000F26000-memory.dmp	family_xworm
behavioral1/files/0x000b000000023c96-57.dat	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
1552	powershell.exe
3452	powershell.exe
5080	powershell.exe
2444	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
636	svchost.exe
3316	svchost.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe

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
348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

pid	Process
2444	powershell.exe
2444	powershell.exe
1552	powershell.exe
1552	powershell.exe
3452	powershell.exe
3452	powershell.exe
5080	powershell.exe
5080	powershell.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	2428	XClient.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	3452	powershell.exe
Token: SeDebugPrivilege	5080	powershell.exe
Token: SeDebugPrivilege	2428	XClient.exe
Token: SeDebugPrivilege	636	svchost.exe
Token: SeDebugPrivilege	3316	svchost.exe
Token: SeDebugPrivilege	1988	taskmgr.exe
Token: SeSystemProfilePrivilege	1988	taskmgr.exe
Token: SeCreateGlobalPrivilege	1988	taskmgr.exe

Suspicious use of FindShellTrayWindow 36 IoCs

pid	Process
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe

Suspicious use of SendNotifyMessage 36 IoCs

pid	Process
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe
1988	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 2444	2428	XClient.exe	83
PID 2428 wrote to memory of 2444	2428	XClient.exe	83
PID 2428 wrote to memory of 1552	2428	XClient.exe	85
PID 2428 wrote to memory of 1552	2428	XClient.exe	85
PID 2428 wrote to memory of 3452	2428	XClient.exe	87
PID 2428 wrote to memory of 3452	2428	XClient.exe	87
PID 2428 wrote to memory of 5080	2428	XClient.exe	89
PID 2428 wrote to memory of 5080	2428	XClient.exe	89
PID 2428 wrote to memory of 348	2428	XClient.exe	91
PID 2428 wrote to memory of 348	2428	XClient.exe	91

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2444
- 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:1552
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3452
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5080
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:348

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:636

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3316

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1988

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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l4fa4je0.opp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk

Filesize
771B

MD5
a578ff427e4e699dc7d01a7446e4060a

SHA1
47a8cd684c51d75d416eb8ecd52b2331a39c709b

SHA256
ec9ec88d2ce0ef3fb03205ea296df18a9a84ca12c7e2bcb65b7147d95892d5ec

SHA512
bc6aecdb0de8a8b95d228af120c7ededff771dc64d4ac52c505a2ab3aad7075706fd920a9093f623af1be62fad3fce3f71e69f395ea55e97253fdabae628f067

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

Filesize
65KB

MD5
f4e5f696d570d7941c3501411c0d1d6c

SHA1
4a22f1fc9571cf7da21df2eeb3db4d9af5ba5bee

SHA256
bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2

SHA512
9f21975b2eb8bc01d3fd7c18db02cf67cb1092013deac99842fb7868a213f23fcbc1cd37527b357be1447c332ed2b29dfc3e19925a5f654a6a1771a1ee9290e4

Download Submit
memory/1988-70-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-72-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-71-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-73-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-74-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-75-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-69-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-63-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-64-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/1988-65-0x000001E75E990000-0x000001E75E991000-memory.dmp

Filesize
4KB

Download
memory/2428-56-0x00007FF940390000-0x00007FF940E51000-memory.dmp

Filesize
10.8MB

Download
memory/2428-1-0x0000000000F10000-0x0000000000F26000-memory.dmp

Filesize
88KB

Download
memory/2428-55-0x00007FF940390000-0x00007FF940E51000-memory.dmp

Filesize
10.8MB

Download
memory/2428-0-0x00007FF940393000-0x00007FF940395000-memory.dmp

Filesize
8KB

Download
memory/2444-16-0x00007FF940390000-0x00007FF940E51000-memory.dmp

Filesize
10.8MB

Download
memory/2444-13-0x00007FF940390000-0x00007FF940E51000-memory.dmp

Filesize
10.8MB

Download
memory/2444-12-0x00007FF940390000-0x00007FF940E51000-memory.dmp

Filesize
10.8MB

Download
memory/2444-7-0x0000022FFE2A0000-0x0000022FFE2C2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads