xworm | 52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6

General

Target

52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
Size

76KB
MD5

ecb15e11ca93f8beac14543492407f4f
SHA1

a47d421585ec1da07d32e0d8101829fcbd300bc1
SHA256

52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6
SHA512

59f3dee42563a4f41e24dfff6c51df55f73610b16065cb35734a798c2942a5c06e6c161ad9063e800d917401939313709113ad1326cb7f669a99e7e7cd9f027f
SSDEEP

1536:Sx3GsLjPnIjCxAVqGePY06MJebCqfnQ2oA9FKg+6HOqMed69:2DnBA6PEMJebCMnK+FZONl9

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

realark.net:5235

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2492-1-0x0000000000850000-0x000000000086A000-memory.dmp	family_xworm
behavioral1/files/0x000e000000012262-34.dat	family_xworm
behavioral1/memory/2404-36-0x0000000001190000-0x00000000011AA000-memory.dmp	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
2768	powershell.exe
1980	powershell.exe
2424	powershell.exe
2336	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe

Executes dropped EXE 2 IoCs

pid	Process
2404	svchost.exe
2532	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.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.

flow	ioc
4	ip-api.com

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
1572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2768	powershell.exe
1980	powershell.exe
2424	powershell.exe
2336	powershell.exe
2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	1980	powershell.exe
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeDebugPrivilege	2336	powershell.exe
Token: SeDebugPrivilege	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
Token: SeDebugPrivilege	2404	svchost.exe
Token: SeDebugPrivilege	2532	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2768	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	31
PID 2492 wrote to memory of 2768	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	31
PID 2492 wrote to memory of 2768	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	31
PID 2492 wrote to memory of 1980	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	33
PID 2492 wrote to memory of 1980	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	33
PID 2492 wrote to memory of 1980	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	33
PID 2492 wrote to memory of 2424	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	35
PID 2492 wrote to memory of 2424	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	35
PID 2492 wrote to memory of 2424	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	35
PID 2492 wrote to memory of 2336	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	37
PID 2492 wrote to memory of 2336	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	37
PID 2492 wrote to memory of 2336	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	37
PID 2492 wrote to memory of 1572	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	39
PID 2492 wrote to memory of 1572	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	39
PID 2492 wrote to memory of 1572	2492	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	39
PID 2984 wrote to memory of 2404	2984	taskeng.exe	42
PID 2984 wrote to memory of 2404	2984	taskeng.exe	42
PID 2984 wrote to memory of 2404	2984	taskeng.exe	42
PID 2984 wrote to memory of 2532	2984	taskeng.exe	43
PID 2984 wrote to memory of 2532	2984	taskeng.exe	43
PID 2984 wrote to memory of 2532	2984	taskeng.exe	43

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\52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
"C:\Users\Admin\AppData\Local\Temp\52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.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:2492
- 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\52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1980
- 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:2424
- 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:2336
- 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:1572

C:\Windows\system32\taskeng.exe
taskeng.exe {4D900EFE-3BCE-4ED4-AD5E-B92DCB3FEDAA} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2404
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2532

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
f580d7ab3db1005747cd0e149047b558

SHA1
4501a62bdca5332ccad4835a74deb3a59764cce3

SHA256
cbea2165135277bda425eb1dabee856b321dca3c1ce543753b0079edeb5e3601

SHA512
6791474ef3aa8545dbe19cbfe41688f75728a3a05feb0a67fd959fe78083483c3a542b35b5764d4a1272a45084e4b01e273a7c28b3ca1184df6235de59d2ec85

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

Filesize
76KB

MD5
ecb15e11ca93f8beac14543492407f4f

SHA1
a47d421585ec1da07d32e0d8101829fcbd300bc1

SHA256
52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6

SHA512
59f3dee42563a4f41e24dfff6c51df55f73610b16065cb35734a798c2942a5c06e6c161ad9063e800d917401939313709113ad1326cb7f669a99e7e7cd9f027f

Download Submit
memory/1980-15-0x000000001B1F0000-0x000000001B4D2000-memory.dmp

Filesize
2.9MB

Download
memory/1980-16-0x0000000002040000-0x0000000002048000-memory.dmp

Filesize
32KB

Download
memory/2404-36-0x0000000001190000-0x00000000011AA000-memory.dmp

Filesize
104KB

Download
memory/2492-7-0x000007FEF6503000-0x000007FEF6504000-memory.dmp

Filesize
4KB

Download
memory/2492-2-0x000007FEF6500000-0x000007FEF6EEC000-memory.dmp

Filesize
9.9MB

Download
memory/2492-0-0x000007FEF6503000-0x000007FEF6504000-memory.dmp

Filesize
4KB

Download
memory/2492-28-0x000007FEF6500000-0x000007FEF6EEC000-memory.dmp

Filesize
9.9MB

Download
memory/2492-1-0x0000000000850000-0x000000000086A000-memory.dmp

Filesize
104KB

Download
memory/2768-8-0x000000001B1B0000-0x000000001B492000-memory.dmp

Filesize
2.9MB

Download
memory/2768-9-0x0000000002360000-0x0000000002368000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads