xworm | 28d4e6de4bd9ffa6edf364baa001c435140befa337b3663c200aaac70734dbf4

General

Target

XClient.exe
Size

67KB
MD5

983d15dbf212dc756d1f81fbdf895845
SHA1

af10c1d57668ec1540f09651e1536168be966b2a
SHA256

28d4e6de4bd9ffa6edf364baa001c435140befa337b3663c200aaac70734dbf4
SHA512

a91beb437816b6ed8e93d24e60510d14d39c85464cf848f7b2b0e30cf24b65fb7e9d15a1d434a862976e024e0c572250fdaec96080da638041f426b8e36c0188
SSDEEP

1536:f84JJjnvF1wLYY+Cim2ehJvtkaI9bAElS4UH6AO8/HO0JYPfaL:fpjvFOdH8YPkaI9bAfO8PO0JGaL

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

memory-lottery.gl.at.ply.gg:22857

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2392-1-0x00000000000E0000-0x00000000000F8000-memory.dmp	family_xworm
behavioral2/files/0x000200000001e764-58.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
4420	powershell.exe
4688	powershell.exe
4912	powershell.exe
4472	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-1-5-21-3227495264-2217614367-4027411560-1000\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\security.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\security.lnk	XClient.exe

Executes dropped EXE 15 IoCs

pid	Process
1692	security
4892	security
1992	security
4164	security
5080	security
3016	security
3888	security
2844	security
2068	security
3364	security
4644	security
1368	security
4812	security
3420	security
1992	security

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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\security = "C:\\Users\\Admin\\AppData\\Roaming\\security"	XClient.exe

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

System Information Discovery
T1082

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
1992	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2392	XClient.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4420	powershell.exe
4420	powershell.exe
4688	powershell.exe
4688	powershell.exe
4912	powershell.exe
4912	powershell.exe
4472	powershell.exe
4472	powershell.exe
2392	XClient.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	XClient.exe
Token: SeDebugPrivilege	4420	powershell.exe
Token: SeDebugPrivilege	4688	powershell.exe
Token: SeDebugPrivilege	4912	powershell.exe
Token: SeDebugPrivilege	4472	powershell.exe
Token: SeDebugPrivilege	2392	XClient.exe
Token: SeDebugPrivilege	1692	security
Token: SeDebugPrivilege	4892	security
Token: SeDebugPrivilege	1992	security
Token: SeDebugPrivilege	4164	security
Token: SeDebugPrivilege	5080	security
Token: SeDebugPrivilege	3016	security
Token: SeDebugPrivilege	3888	security
Token: SeDebugPrivilege	2844	security
Token: SeDebugPrivilege	2068	security
Token: SeDebugPrivilege	3364	security
Token: SeDebugPrivilege	4644	security
Token: SeDebugPrivilege	1368	security
Token: SeDebugPrivilege	4812	security
Token: SeDebugPrivilege	3420	security
Token: SeDebugPrivilege	1992	security

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2392	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 4420	2392	XClient.exe	82
PID 2392 wrote to memory of 4420	2392	XClient.exe	82
PID 2392 wrote to memory of 4688	2392	XClient.exe	84
PID 2392 wrote to memory of 4688	2392	XClient.exe	84
PID 2392 wrote to memory of 4912	2392	XClient.exe	86
PID 2392 wrote to memory of 4912	2392	XClient.exe	86
PID 2392 wrote to memory of 4472	2392	XClient.exe	88
PID 2392 wrote to memory of 4472	2392	XClient.exe	88
PID 2392 wrote to memory of 1992	2392	XClient.exe	90
PID 2392 wrote to memory of 1992	2392	XClient.exe	90

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 behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2392
- 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:4420
- 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:4688
- 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\security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4912
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'security'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4472
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "security" /tr "C:\Users\Admin\AppData\Roaming\security"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1992

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1692

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4892

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1992

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4164

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5080

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3016

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3888

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2844

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2068

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3364

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4644

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1368

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4812

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3420

C:\Users\Admin\AppData\Roaming\security
C:\Users\Admin\AppData\Roaming\security
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1992

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

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\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\security.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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

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

Filesize
944B

MD5
cc19bcff372d20459d3651ba8aef50e7

SHA1
3c6f1d4cdd647864fb97a16b1aefba67fcee11f7

SHA256
366473e774d8976c7fd4dc582220666fb61a4feb3f7c95e69b2a68ad9e446ec9

SHA512
a0e360ca4b6e874fd44612bf4b17f3722c0619da4f6bade12a62efadae88c2d33460114eaafa2bc3fb1cef5bea07e745b8bee24f15d0cacaff5f4a521b225080

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_etd5ay3k.fl4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
67KB

MD5
983d15dbf212dc756d1f81fbdf895845

SHA1
af10c1d57668ec1540f09651e1536168be966b2a

SHA256
28d4e6de4bd9ffa6edf364baa001c435140befa337b3663c200aaac70734dbf4

SHA512
a91beb437816b6ed8e93d24e60510d14d39c85464cf848f7b2b0e30cf24b65fb7e9d15a1d434a862976e024e0c572250fdaec96080da638041f426b8e36c0188

Download Submit
memory/2392-55-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/2392-0-0x00007FFBAC563000-0x00007FFBAC565000-memory.dmp

Filesize
8KB

Download
memory/2392-56-0x00007FFBAC563000-0x00007FFBAC565000-memory.dmp

Filesize
8KB

Download
memory/2392-57-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/2392-1-0x00000000000E0000-0x00000000000F8000-memory.dmp

Filesize
96KB

Download
memory/4420-17-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/4420-14-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/4420-13-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/4420-12-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

Filesize
10.8MB

Download
memory/4420-8-0x0000020D781B0000-0x0000020D781D2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads