xworm | 97a22c0ccf016548ea84f9152fb5d58dddb374e9874956fbb9d12ae67aa1e9d2

General

Target

XWorm V5.2/XWorm V5.2.exe
Size

73KB
MD5

b85f72648cf99409357519725c9bd5fc
SHA1

de3b9162632a96c4a3ac27da6663399a0d393910
SHA256

b06d089bd5be63788ef530ff1f93216625aa66d1d811f9ec3f2892268b656011
SHA512

4569a7a710ea4226dc81b6d158cabae1dd0e5452d5847e5d29d68efa0e2572092c19c9887c5a8498acb78dd2c961bb1d72750e671ff89de0ce2c0b6922292804
SSDEEP

1536:jqst7fwnejh7pHWpUhFYdsTudTb42WKvCBXH3KyuJG6JyORxaE1QHK:jBFZ7pWpHmWTb42NCXRu7yORoEyHK

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

uk1.localto.net:3725

Attributes

Install_directory
%ProgramData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2488-1-0x0000000001300000-0x0000000001318000-memory.dmp	family_xworm
C:\ProgramData\svchost.exe	family_xworm
behavioral1/memory/1896-36-0x0000000001220000-0x0000000001238000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	process
892	powershell.exe
1116	powershell.exe
1608	powershell.exe
2676	powershell.exe
2576	powershell.exe
2580	powershell.exe
2144	powershell.exe
956	powershell.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

3032 cmd.exe

pid	process
3032	cmd.exe

Drops startup file 4 IoCs

Processes:

XWorm V5.2.exesvchost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XWorm V5.2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XWorm V5.2.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1896 svchost.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.

Processes:

flow ioc

4 ip-api.com

pid	process
1896	svchost.exe

flow	ioc
4	ip-api.com

Drops file in System32 directory 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

description	ioc	process
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\System32\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

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

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2132 timeout.exe
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exe

pid process

2456 schtasks.exe
1524 schtasks.exe

pid	process
2132	timeout.exe

pid	process
2456	schtasks.exe
1524	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXWorm V5.2.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exe

pid	process
1608	powershell.exe
2676	powershell.exe
2576	powershell.exe
2580	powershell.exe
2488	XWorm V5.2.exe
2144	powershell.exe
956	powershell.exe
892	powershell.exe
1116	powershell.exe
1896	svchost.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

XWorm V5.2.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2488	XWorm V5.2.exe
Token: SeDebugPrivilege	1608	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	2488	XWorm V5.2.exe
Token: SeDebugPrivilege	1896	svchost.exe
Token: SeDebugPrivilege	2144	powershell.exe
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	892	powershell.exe
Token: SeDebugPrivilege	1116	powershell.exe
Token: SeDebugPrivilege	1896	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

XWorm V5.2.exesvchost.exe

pid process

2488 XWorm V5.2.exe
1896 svchost.exe

pid	process
2488	XWorm V5.2.exe
1896	svchost.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

XWorm V5.2.exetaskeng.execmd.exesvchost.exe

description	pid	process	target process
PID 2488 wrote to memory of 1608	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 1608	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 1608	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2676	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2676	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2676	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2576	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2576	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2576	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2580	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2580	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2580	2488	XWorm V5.2.exe	powershell.exe
PID 2488 wrote to memory of 2456	2488	XWorm V5.2.exe	schtasks.exe
PID 2488 wrote to memory of 2456	2488	XWorm V5.2.exe	schtasks.exe
PID 2488 wrote to memory of 2456	2488	XWorm V5.2.exe	schtasks.exe
PID 1904 wrote to memory of 1896	1904	taskeng.exe	svchost.exe
PID 1904 wrote to memory of 1896	1904	taskeng.exe	svchost.exe
PID 1904 wrote to memory of 1896	1904	taskeng.exe	svchost.exe
PID 2488 wrote to memory of 2872	2488	XWorm V5.2.exe	schtasks.exe
PID 2488 wrote to memory of 2872	2488	XWorm V5.2.exe	schtasks.exe
PID 2488 wrote to memory of 2872	2488	XWorm V5.2.exe	schtasks.exe
PID 2488 wrote to memory of 3032	2488	XWorm V5.2.exe	cmd.exe
PID 2488 wrote to memory of 3032	2488	XWorm V5.2.exe	cmd.exe
PID 2488 wrote to memory of 3032	2488	XWorm V5.2.exe	cmd.exe
PID 3032 wrote to memory of 2132	3032	cmd.exe	timeout.exe
PID 3032 wrote to memory of 2132	3032	cmd.exe	timeout.exe
PID 3032 wrote to memory of 2132	3032	cmd.exe	timeout.exe
PID 1896 wrote to memory of 2144	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 2144	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 2144	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 956	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 956	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 956	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 892	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 892	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 892	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 1116	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 1116	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 1116	1896	svchost.exe	powershell.exe
PID 1896 wrote to memory of 1524	1896	svchost.exe	schtasks.exe
PID 1896 wrote to memory of 1524	1896	svchost.exe	schtasks.exe
PID 1896 wrote to memory of 1524	1896	svchost.exe	schtasks.exe

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\XWorm V5.2\XWorm V5.2.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm V5.2\XWorm V5.2.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2488
- 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\XWorm V5.2\XWorm V5.2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1608
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWorm V5.2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2676
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2576
- 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:2580
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2456
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "svchost"
  2⤵
  PID:2872
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5DAA.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2132

C:\Windows\system32\taskeng.exe
taskeng.exe {FDA6AA97-9796-4AD7-A9FE-5140E028453E} S-1-5-21-457978338-2990298471-2379561640-1000:WOUOSVRD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1904
- C:\ProgramData\svchost.exe
  C:\ProgramData\svchost.exe
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1896
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2144
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:956
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:892
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1116
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1524

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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:\ProgramData\svchost.exe

Filesize
73KB

MD5
b85f72648cf99409357519725c9bd5fc

SHA1
de3b9162632a96c4a3ac27da6663399a0d393910

SHA256
b06d089bd5be63788ef530ff1f93216625aa66d1d811f9ec3f2892268b656011

SHA512
4569a7a710ea4226dc81b6d158cabae1dd0e5452d5847e5d29d68efa0e2572092c19c9887c5a8498acb78dd2c961bb1d72750e671ff89de0ce2c0b6922292804

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5DAA.tmp.bat

Filesize
173B

MD5
abca370ebf94f4a505a0bb376fb254d0

SHA1
b11c714712e025950ddc8d1d271f4f9bd5b0fced

SHA256
f55b6b94711340bb4603459cd34c86fd04318c2c8a89ceb970595ed1c759e19e

SHA512
841918abb731fb39c897a8d37adbac5c126675ba832bbc781a4ae135cf1bfc73a90517f7beea48efc6dabb685a041a6f634f1513f39a5fd2ae2106771e2a498c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
bfd94c9bc61f5f1267e0f44dea3820e6

SHA1
3b96900967e5a7215884c9eb66cd0456d08e5658

SHA256
e2fe1155812ef4af7d4e03e08a2e4b526b02c26d8d1f81bd9a5ba97490a538e1

SHA512
c55d65b09c703161f81252da83a1268e7cea7c7e739cfa07fc42ae0986385efc020ed3d5031ef8a3e15d576b5bca6d23b98617e416e0917f02ade27d6c44ac0e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
2ead4730be21afe95d82cb3c2caba064

SHA1
dd97c799d72c7bf78df0feae376659c27b23597a

SHA256
c2e31cefae4dd182c545cee65361cb85e8cb8013100a90fb640471368448e241

SHA512
293f09e253bec0cc3d4e301f7bdca2fa0eaf826ebb835c73480cc7a4e2caddd55423b1c4df7e0c91030c13462256604bf128a3ffc964197925cab35de64a8020

Download Submit
\??\PIPE\srvsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1608-7-0x0000000002670000-0x00000000026F0000-memory.dmp

Filesize
512KB

Download
memory/1608-8-0x000000001B340000-0x000000001B622000-memory.dmp

Filesize
2.9MB

Download
memory/1608-9-0x0000000002460000-0x0000000002468000-memory.dmp

Filesize
32KB

Download
memory/1896-36-0x0000000001220000-0x0000000001238000-memory.dmp

Filesize
96KB

Download
memory/2488-17-0x000007FEF5DA3000-0x000007FEF5DA4000-memory.dmp

Filesize
4KB

Download
memory/2488-29-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-0-0x000007FEF5DA3000-0x000007FEF5DA4000-memory.dmp

Filesize
4KB

Download
memory/2488-47-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-2-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/2488-1-0x0000000001300000-0x0000000001318000-memory.dmp

Filesize
96KB

Download
memory/2676-16-0x0000000001F50000-0x0000000001F58000-memory.dmp

Filesize
32KB

Download
memory/2676-15-0x000000001B3F0000-0x000000001B6D2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads