skuld | a5b3e8a7c2cace998612199ffdfda738d3107ebafc810219c1a648467cefcb05

General

Target

EzFN-Manager.exe
Size

10.5MB
MD5

e528490c86b7bbd42cee5eb2ec1dcaa0
SHA1

758ea1f40317648d9c0eb6f3540158bdbc1860a4
SHA256

a5b3e8a7c2cace998612199ffdfda738d3107ebafc810219c1a648467cefcb05
SHA512

fce546b12944c6b08c016532a6f49fdb5d45412025de2600a59079f29323bb2732d756f802999a3fb46e84e52dd93c1c2acdde59a9feaf102546455976f41863
SSDEEP

196608:HxmZUWfcvgWCpS1rpAcfBSOfMJiNbguUhFk7668rH55oHG:HwG0WCyrpAcfzf9bgT4xc5+G

Score

10^/10

skuld warzonerat discovery execution infostealer persistence rat stealer

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1300556355329064961/Hr5z2jCS3WJ6i3lLNX9pH7AY6YULSkQlBDytwIn6WghzluB2Q148Zrb2fym379REnDEw

Extracted

Family

warzonerat

C2

admin345-58584.portmap.host:58584

Signatures

Skuld family
skuld
Skuld stealer
An info stealer written in Go lang.
stealer skuld
WarzoneRat, AveMaria
WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.
rat infostealer warzonerat
Warzonerat family
warzonerat

Warzone RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\WinRAR.exe	warzonerat

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

2424 powershell.exe
2688 powershell.exe
Executes dropped EXE 3 IoCs

Processes:

EzFN-Manager.exeWinRAR.exeWinRAR.exe

pid process

1284 EzFN-Manager.exe
1320 WinRAR.exe
2920 WinRAR.exe
Loads dropped DLL 4 IoCs

Processes:

EzFN-Manager.exeWinRAR.exe

pid process

2356 EzFN-Manager.exe
2356 EzFN-Manager.exe
1320 WinRAR.exe
1320 WinRAR.exe

pid	process
2424	powershell.exe
2688	powershell.exe

pid	process
1284	EzFN-Manager.exe
1320	WinRAR.exe
2920	WinRAR.exe

pid	process
2356	EzFN-Manager.exe
2356	EzFN-Manager.exe
1320	WinRAR.exe
1320	WinRAR.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WinRAR.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WinRAR = "C:\\Users\\Admin\\Documents\\WinRAR.exe"	WinRAR.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

WinRAR.exepowershell.exeWinRAR.exepowershell.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinRAR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WinRAR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exepowershell.exe

pid process

2424 powershell.exe
2688 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2424 powershell.exe
Token: SeDebugPrivilege 2688 powershell.exe

pid	process
2424	powershell.exe
2688	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2424	powershell.exe
Token: SeDebugPrivilege	2688	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

EzFN-Manager.exeWinRAR.exeWinRAR.exe

description	pid	process	target process
PID 2356 wrote to memory of 1284	2356	EzFN-Manager.exe	EzFN-Manager.exe
PID 2356 wrote to memory of 1284	2356	EzFN-Manager.exe	EzFN-Manager.exe
PID 2356 wrote to memory of 1284	2356	EzFN-Manager.exe	EzFN-Manager.exe
PID 2356 wrote to memory of 1320	2356	EzFN-Manager.exe	WinRAR.exe
PID 2356 wrote to memory of 1320	2356	EzFN-Manager.exe	WinRAR.exe
PID 2356 wrote to memory of 1320	2356	EzFN-Manager.exe	WinRAR.exe
PID 2356 wrote to memory of 1320	2356	EzFN-Manager.exe	WinRAR.exe
PID 1320 wrote to memory of 2424	1320	WinRAR.exe	powershell.exe
PID 1320 wrote to memory of 2424	1320	WinRAR.exe	powershell.exe
PID 1320 wrote to memory of 2424	1320	WinRAR.exe	powershell.exe
PID 1320 wrote to memory of 2424	1320	WinRAR.exe	powershell.exe
PID 1320 wrote to memory of 2920	1320	WinRAR.exe	WinRAR.exe
PID 1320 wrote to memory of 2920	1320	WinRAR.exe	WinRAR.exe
PID 1320 wrote to memory of 2920	1320	WinRAR.exe	WinRAR.exe
PID 1320 wrote to memory of 2920	1320	WinRAR.exe	WinRAR.exe
PID 2920 wrote to memory of 2688	2920	WinRAR.exe	powershell.exe
PID 2920 wrote to memory of 2688	2920	WinRAR.exe	powershell.exe
PID 2920 wrote to memory of 2688	2920	WinRAR.exe	powershell.exe
PID 2920 wrote to memory of 2688	2920	WinRAR.exe	powershell.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe
PID 2920 wrote to memory of 2652	2920	WinRAR.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\EzFN-Manager.exe
"C:\Users\Admin\AppData\Local\Temp\EzFN-Manager.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Roaming\EzFN-Manager.exe
  "C:\Users\Admin\AppData\Roaming\EzFN-Manager.exe"
  2⤵
  - Executes dropped EXE
  PID:1284
- C:\Users\Admin\AppData\Roaming\WinRAR.exe
  "C:\Users\Admin\AppData\Roaming\WinRAR.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1320
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell Add-MpPreference -ExclusionPath C:\
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2424
- - C:\Users\Admin\Documents\WinRAR.exe
    "C:\Users\Admin\Documents\WinRAR.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2920
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell Add-MpPreference -ExclusionPath C:\
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2688
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2652

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\EzFN-Manager.exe

Filesize
10.1MB

MD5
d4c5f25a960ba6c7eb5675d7eb5df4a0

SHA1
869d36d2c06b0874f55fccf792ea490a03b3e524

SHA256
bb7435286298b5443ec5e7dc0c30510eb54e0fb22bd593f81974a0bf269139c6

SHA512
340b2c705be89097ab88ab3514c6472d63650c02538ef1d856a76cdb9efc897c0377f8ba23bc176163556fbc31ad60717789d3d12601798c13f83ecbe8500c15

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\PN6ZCLDIDUYGT8Z1C9W8.temp

Filesize
7KB

MD5
416328e9f9b900b4db80619a60c4ce0c

SHA1
7cee41d3f4f464c18da704da12c67e943ae10f45

SHA256
7c758d31da79e52c004d50159cc14725e758707369f7b6db03fbcaf193bd499f

SHA512
f424c6d95aa15f219025409f70295f5e1139ca56a1427927b5d3ebf515a9d6b8c64cc6ac65b1810f8ca0db2b47c33ee8e629762dce564a0e1d660b4dca4b4788

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

Filesize
297KB

MD5
e54a181f1e94dfd3e427d06c32138874

SHA1
1a2fd8e795c9f613a25f24eb0399b629764a8f99

SHA256
b9052c2cbcc38384b96e82de54a76dc0efc8b7219ebe5a35f876e1cd45c13cc5

SHA512
8e51787a79e7c29204eef823ab1baab05aea5e1e792ad62171e0f86d2c6b005a2eda94833a53b2dab21c74593799826e22dae9834bc0b57a6f551ddcdb84efff

Download Submit
memory/2356-0-0x000007FEF5653000-0x000007FEF5654000-memory.dmp

Filesize
4KB

Download
memory/2356-1-0x00000000001E0000-0x0000000000C6A000-memory.dmp

Filesize
10.5MB

Download
memory/2652-34-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/2652-36-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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