xworm | f6df5e6ed88075cec7dfce8897314885d038e92b359edb0a2cc172b7f86749f7

General

Target

XClient.exe
Size

61KB
MD5

1f2d7a5deda5d3d47b028f3e0820bd84
SHA1

d73ae116a5eed7a7fadbff2b046336cc5e21b28f
SHA256

f6df5e6ed88075cec7dfce8897314885d038e92b359edb0a2cc172b7f86749f7
SHA512

9c9b02585fb24807fe830982009b89180226dde459b1e72a8fa78dc5b77052c5f203325eb9be3298fc376c9f0a0b43cbcbfc63ef57d493498b6b4966a3476cd6
SSDEEP

1536:7YNqBkIQDjzm1G4nCPx5LTnBjkbvtN1TPe4WmjV6FYO7v/ah:7Yc0zm1GOCPzLrBjkbvnKwO7nI

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

sponef159-35748.portmap.host:35748

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/4752-1-0x0000000000010000-0x0000000000026000-memory.dmp	family_xworm
behavioral1/files/0x000b000000023c97-73.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
3788	powershell.exe
4232	powershell.exe
3224	powershell.exe
2228	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-1-5-21-3350944739-639801879-157714471-1000\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 1 IoCs

pid	Process
1508	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-1-5-21-3350944739-639801879-157714471-1000\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	taskmgr.exe
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

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
1308	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2228	powershell.exe
2228	powershell.exe
3788	powershell.exe
3788	powershell.exe
4232	powershell.exe
4232	powershell.exe
3224	powershell.exe
3224	powershell.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	4752	XClient.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	3788	powershell.exe
Token: SeDebugPrivilege	4232	powershell.exe
Token: SeDebugPrivilege	3224	powershell.exe
Token: SeDebugPrivilege	4752	XClient.exe
Token: SeDebugPrivilege	2848	taskmgr.exe
Token: SeSystemProfilePrivilege	2848	taskmgr.exe
Token: SeCreateGlobalPrivilege	2848	taskmgr.exe
Token: SeDebugPrivilege	1508	svchost.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe

Suspicious use of SendNotifyMessage 34 IoCs

pid	Process
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe
2848	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4752 wrote to memory of 2228	4752	XClient.exe	85
PID 4752 wrote to memory of 2228	4752	XClient.exe	85
PID 4752 wrote to memory of 3788	4752	XClient.exe	87
PID 4752 wrote to memory of 3788	4752	XClient.exe	87
PID 4752 wrote to memory of 4232	4752	XClient.exe	89
PID 4752 wrote to memory of 4232	4752	XClient.exe	89
PID 4752 wrote to memory of 3224	4752	XClient.exe	91
PID 4752 wrote to memory of 3224	4752	XClient.exe	91
PID 4752 wrote to memory of 1308	4752	XClient.exe	93
PID 4752 wrote to memory of 1308	4752	XClient.exe	93

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:4752
- 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:2228
- 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:3788
- 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:4232
- 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:3224
- 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:1308

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:2848

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1508

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

Replay Monitor

Loading Replay Monitor...

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
a9451a6b9669d49bd90704dff21beb85

SHA1
5f93d2dec01a31e04fc90c28eb1c5ca62c6fff80

SHA256
b2ff191507379930b97a212f869c3774c20b274e8fc9fcc96da5c154fb0e3056

SHA512
06634cb578f6ce8d721e6306004082073fc224b91ceea37ef870df87b12b2d5f59e7d08b20b520787a1d13f3edbbb004197bf70f180f86dd7f401a5ad289ccb5

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

Filesize
944B

MD5
51cf8df21f531e31f7740b4ec487a48a

SHA1
40c6a73b22d71625a62df109aefc92a5f9b9d13e

SHA256
263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d

SHA512
57a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qhken1fi.myb.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
b33cb62857339d7bc1e715d21c496ac1

SHA1
950baf718cf6ccfadd41ce24079b0c8bce0db250

SHA256
e92d91aa3c8233b118ca8150a5a1ec4cd8d1c16dcbf1bb157ee25fb5d84ceb7a

SHA512
00e2e277744e51046c25e3c84426cbf410c330f144662596cb101db4085ba9bb5d1c55aeb7a11e18ca3725d2dea9d57ffbef11570cabf34319b5836f364a3762

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

Filesize
61KB

MD5
1f2d7a5deda5d3d47b028f3e0820bd84

SHA1
d73ae116a5eed7a7fadbff2b046336cc5e21b28f

SHA256
f6df5e6ed88075cec7dfce8897314885d038e92b359edb0a2cc172b7f86749f7

SHA512
9c9b02585fb24807fe830982009b89180226dde459b1e72a8fa78dc5b77052c5f203325eb9be3298fc376c9f0a0b43cbcbfc63ef57d493498b6b4966a3476cd6

Download Submit
memory/2228-3-0x000001DA84F20000-0x000001DA84F42000-memory.dmp

Filesize
136KB

Download
memory/2228-12-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/2228-13-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/2228-14-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/2228-17-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/2848-67-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-71-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-66-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-59-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-60-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-61-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-65-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-68-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-70-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/2848-69-0x00000198876D0000-0x00000198876D1000-memory.dmp

Filesize
4KB

Download
memory/4752-57-0x00007FFAE2C43000-0x00007FFAE2C45000-memory.dmp

Filesize
8KB

Download
memory/4752-0-0x00007FFAE2C43000-0x00007FFAE2C45000-memory.dmp

Filesize
8KB

Download
memory/4752-58-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/4752-56-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp

Filesize
10.8MB

Download
memory/4752-1-0x0000000000010000-0x0000000000026000-memory.dmp

Filesize
88KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads