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 2 IoCs

resource	yara_rule
behavioral2/memory/4988-1-0x0000000000650000-0x000000000066A000-memory.dmp	family_xworm
behavioral2/files/0x000c00000001e597-60.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
2676	powershell.exe
2876	powershell.exe
1572	powershell.exe
5012	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.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
3508	svchost.exe
3268	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-1-5-21-940901362-3608833189-1915618603-1000\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
15	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
2904	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2676	powershell.exe
2676	powershell.exe
2876	powershell.exe
2876	powershell.exe
1572	powershell.exe
1572	powershell.exe
5012	powershell.exe
5012	powershell.exe
4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	1572	powershell.exe
Token: SeDebugPrivilege	5012	powershell.exe
Token: SeDebugPrivilege	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe
Token: SeDebugPrivilege	3508	svchost.exe
Token: SeDebugPrivilege	3268	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 2676	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	93
PID 4988 wrote to memory of 2676	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	93
PID 4988 wrote to memory of 2876	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	95
PID 4988 wrote to memory of 2876	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	95
PID 4988 wrote to memory of 1572	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	97
PID 4988 wrote to memory of 1572	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	97
PID 4988 wrote to memory of 5012	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	99
PID 4988 wrote to memory of 5012	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	99
PID 4988 wrote to memory of 2904	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	103
PID 4988 wrote to memory of 2904	4988	52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6.exe	103

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⤵
- Checks computer location settings
- 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:4988
- 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:2676
- 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:2876
- 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:1572
- 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:5012
- 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:2904

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3508

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3268

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\svchost.exe.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
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
04f1d68afbed6b13399edfae1e9b1472

SHA1
8bfdcb687a995e4a63a8c32df2c66dc89f91a8b0

SHA256
f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de

SHA512
30c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wjabv1nh.egt.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
76KB

MD5
ecb15e11ca93f8beac14543492407f4f

SHA1
a47d421585ec1da07d32e0d8101829fcbd300bc1

SHA256
52d778b6b7e3115d0746bd1aef233cb7d97c8a2f018de80cd37bfefc0388a4c6

SHA512
59f3dee42563a4f41e24dfff6c51df55f73610b16065cb35734a798c2942a5c06e6c161ad9063e800d917401939313709113ad1326cb7f669a99e7e7cd9f027f

Download Submit
memory/2676-4-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/2676-18-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/2676-11-0x000001F87AE10000-0x000001F87AE32000-memory.dmp

Filesize
136KB

Download
memory/2676-5-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/2676-3-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/4988-0-0x00007FFD56C43000-0x00007FFD56C45000-memory.dmp

Filesize
8KB

Download
memory/4988-58-0x00007FFD56C43000-0x00007FFD56C45000-memory.dmp

Filesize
8KB

Download
memory/4988-59-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/4988-2-0x00007FFD56C40000-0x00007FFD57701000-memory.dmp

Filesize
10.8MB

Download
memory/4988-1-0x0000000000650000-0x000000000066A000-memory.dmp

Filesize
104KB

Download
memory/5012-53-0x0000024070110000-0x000002407032C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads