xworm | be5bc874511f4713385e40e7b8e1f8d57ee58ba6a25d959fa83739eaf3137d41

General

Target

nerest.exe
Size

61KB
MD5

e2f4633e3effce36ddcbd83ea3ff7834
SHA1

ee5390249a715c415a2b91450e1ff3059dcc5f0c
SHA256

be5bc874511f4713385e40e7b8e1f8d57ee58ba6a25d959fa83739eaf3137d41
SHA512

18afe4ad52dedd1600be8e1ce432cc80e79f6a7a472204a794986b22b12fc9831a360e73036e7a15277929d8fec0a5340dcda555a11be65223ec4965fdfa07de
SSDEEP

1536:LHlznYyP4mGgRLHxDkbmakqJtF6qcDROdE8OQ8JZ:zlzvPFGgpVkbmClc1OdrOQ8JZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

info-power.gl.at.ply.gg:23360

Attributes

Install_directory
%AppData%
install_file
chrome.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2112-1-0x00000000000D0000-0x00000000000E6000-memory.dmp	family_xworm
behavioral1/memory/2820-6-0x00000000029E0000-0x0000000002A60000-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
2824	powershell.exe
2632	powershell.exe
2068	powershell.exe
2820	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.lnk	nerest.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.lnk	nerest.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe"	nerest.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2820	powershell.exe
2824	powershell.exe
2632	powershell.exe
2068	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	nerest.exe
Token: SeDebugPrivilege	2820	powershell.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2632	powershell.exe
Token: SeDebugPrivilege	2068	powershell.exe
Token: SeDebugPrivilege	2112	nerest.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2820	2112	nerest.exe	31
PID 2112 wrote to memory of 2820	2112	nerest.exe	31
PID 2112 wrote to memory of 2820	2112	nerest.exe	31
PID 2112 wrote to memory of 2824	2112	nerest.exe	33
PID 2112 wrote to memory of 2824	2112	nerest.exe	33
PID 2112 wrote to memory of 2824	2112	nerest.exe	33
PID 2112 wrote to memory of 2632	2112	nerest.exe	35
PID 2112 wrote to memory of 2632	2112	nerest.exe	35
PID 2112 wrote to memory of 2632	2112	nerest.exe	35
PID 2112 wrote to memory of 2068	2112	nerest.exe	37
PID 2112 wrote to memory of 2068	2112	nerest.exe	37
PID 2112 wrote to memory of 2068	2112	nerest.exe	37

C:\Users\Admin\AppData\Local\Temp\nerest.exe
"C:\Users\Admin\AppData\Local\Temp\nerest.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112
- 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\nerest.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2820
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'nerest.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- 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\chrome.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'chrome.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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
e1e8fd6e6e2d6cc60a966527e2c59891

SHA1
d1130463c0c285a309d1e43ec56c83f9b77dc939

SHA256
85a28912710e8dba2ab6a73b6da80b599faa8d64c3b23b254b4bdcb0a601a62b

SHA512
6a190bda416141e812617efa1fa72fbac5681d8ef3f7baf9745e197ae52d1b36c517a48b08120b0b12f4e192859a0ef75d130685525735cab926f9e7406524fc

Download Submit
memory/2112-0-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

Filesize
4KB

Download
memory/2112-1-0x00000000000D0000-0x00000000000E6000-memory.dmp

Filesize
88KB

Download
memory/2112-32-0x000000001B1B0000-0x000000001B230000-memory.dmp

Filesize
512KB

Download
memory/2112-33-0x000007FEF5593000-0x000007FEF5594000-memory.dmp

Filesize
4KB

Download
memory/2112-34-0x000000001B1B0000-0x000000001B230000-memory.dmp

Filesize
512KB

Download
memory/2820-6-0x00000000029E0000-0x0000000002A60000-memory.dmp

Filesize
512KB

Download
memory/2820-7-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2820-8-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/2824-14-0x000000001B750000-0x000000001BA32000-memory.dmp

Filesize
2.9MB

Download
memory/2824-15-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads