xworm | b38ad7b4fa51664916983ed7364a45cdf8f18d7bacbc2fe01947cf68d926e3d7

General

Target

XClienft.exe
Size

78KB
MD5

43dbe2e20d22fd2e51499a0428724b3e
SHA1

bccb018e0388ece4e7db4d9d817d2c88ae5b6716
SHA256

b38ad7b4fa51664916983ed7364a45cdf8f18d7bacbc2fe01947cf68d926e3d7
SHA512

4e7b2e49fc0a23b43787e13ae6ff764988759fb7633950fdcd8321759d1a6af052f776e73061622e02686bd02b3605c784d9d7dad252363c21792e852a572090
SSDEEP

1536:L6NRw9vrH7UwdhE6KZBbBe+b51yfP6s6SSOhGZeVaUvP9Ut:L2RAjoAm6KY+b/yaVO4eVxM

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

about-publishing.gl.at.ply.gg:49157

Attributes

Install_directory
%AppData%
install_file
update.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/884-1-0x00000000006B0000-0x00000000006CA000-memory.dmp	family_xworm
behavioral1/files/0x0009000000024dc1-57.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
1780	powershell.exe
4252	powershell.exe
1220	powershell.exe
3264	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3336	update.exe
4768	update.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-1-5-21-2253712635-4068079004-3870069674-1000\Software\Microsoft\Windows\CurrentVersion\Run\update = "C:\\Users\\Admin\\AppData\\Roaming\\update.exe"	XClienft.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
4620	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4252	powershell.exe
4252	powershell.exe
1220	powershell.exe
1220	powershell.exe
3264	powershell.exe
3264	powershell.exe
1780	powershell.exe
1780	powershell.exe
884	XClienft.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	884	XClienft.exe
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeDebugPrivilege	1220	powershell.exe
Token: SeDebugPrivilege	3264	powershell.exe
Token: SeDebugPrivilege	1780	powershell.exe
Token: SeDebugPrivilege	884	XClienft.exe
Token: SeDebugPrivilege	3336	update.exe
Token: SeDebugPrivilege	4768	update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
884	XClienft.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 4252	884	XClienft.exe	81
PID 884 wrote to memory of 4252	884	XClienft.exe	81
PID 884 wrote to memory of 1220	884	XClienft.exe	83
PID 884 wrote to memory of 1220	884	XClienft.exe	83
PID 884 wrote to memory of 3264	884	XClienft.exe	85
PID 884 wrote to memory of 3264	884	XClienft.exe	85
PID 884 wrote to memory of 1780	884	XClienft.exe	87
PID 884 wrote to memory of 1780	884	XClienft.exe	87
PID 884 wrote to memory of 4620	884	XClienft.exe	89
PID 884 wrote to memory of 4620	884	XClienft.exe	89

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\XClienft.exe
"C:\Users\Admin\AppData\Local\Temp\XClienft.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:884
- 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\XClienft.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4252
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClienft.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1220
- 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\update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3264
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'update.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1780
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "update" /tr "C:\Users\Admin\AppData\Roaming\update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4620

C:\Users\Admin\AppData\Roaming\update.exe
C:\Users\Admin\AppData\Roaming\update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3336

C:\Users\Admin\AppData\Roaming\update.exe
C:\Users\Admin\AppData\Roaming\update.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4768

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

1

T1012

System Information Discovery

1

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
944B

MD5
4ae54c3a00d1d664f74bfd4f70c85332

SHA1
67f3ed7aaea35153326c1f907c0334feef08484c

SHA256
1e56a98f74d4a604bef716b47ef730d88f93aec57a98c89aa4423394cbc95b5c

SHA512
b3bbdefeaadbdaac00f23ce3389bbd3b565bd7e0079aeebf3e4afba892382e1cd3896c00bb2e5a98146ac593f9bdc5568d0bd08c5b0139f0814b1a38911c3889

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

Filesize
944B

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hqqqmqlk.h2y.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
78KB

MD5
43dbe2e20d22fd2e51499a0428724b3e

SHA1
bccb018e0388ece4e7db4d9d817d2c88ae5b6716

SHA256
b38ad7b4fa51664916983ed7364a45cdf8f18d7bacbc2fe01947cf68d926e3d7

SHA512
4e7b2e49fc0a23b43787e13ae6ff764988759fb7633950fdcd8321759d1a6af052f776e73061622e02686bd02b3605c784d9d7dad252363c21792e852a572090

Download Submit
memory/884-1-0x00000000006B0000-0x00000000006CA000-memory.dmp

Filesize
104KB

Download
memory/884-0-0x00007FFA50573000-0x00007FFA50575000-memory.dmp

Filesize
8KB

Download
memory/884-56-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/884-55-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/884-50-0x00007FFA50573000-0x00007FFA50575000-memory.dmp

Filesize
8KB

Download
memory/4252-11-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-18-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-15-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-14-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-12-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-13-0x00007FFA50570000-0x00007FFA51032000-memory.dmp

Filesize
10.8MB

Download
memory/4252-10-0x000001CAEF950000-0x000001CAEF972000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads