guloader | fa53f8c7ca9bfb109801818f0d680200e100938417952e963cf0f5b880cdcb52

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 01:49

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe
Size 372KB
Sample240501-b8vjjsdc2w
SHA256 45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6
MD5 da2f362c315e776de40b0805c5d3571b
SHA1 bc6e0d5ed9e74470bdfe2d854c3a798c2e45b074
SHA512 e53917235541dcbc9064c913cef731e101dd15593c7276febb122a3549214c30180485394e0e1867d58e41326c7fc3efd04543a85e55443c44e12838b08d006c
SSDEEP 6144:HT4DtVpZI3UkwlUEkFvjV5Uioj7RODGIe2gngkOt/NONJp98AGECTcz8mFsgeJ:HTghmEkFx5Uf4wOt/NA8JE2bJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

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-1-5-21-17203666-93769886-2545153620-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Startup key = "%Rejig% -windowstyle minimized $decimerings=(Get-ItemProperty -Path 'HKCU:\\Vicedirektrers\\').Swounds;%Rejig% ($decimerings)"	reg.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
676	powershell.exe
4260	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 676 set thread context of 4260	676	powershell.exe	90

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
3784	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe
676	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
676	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	676	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 676	4460	45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe	83
PID 4460 wrote to memory of 676	4460	45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe	83
PID 4460 wrote to memory of 676	4460	45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe	83
PID 676 wrote to memory of 3464	676	powershell.exe	88
PID 676 wrote to memory of 3464	676	powershell.exe	88
PID 676 wrote to memory of 3464	676	powershell.exe	88
PID 676 wrote to memory of 4260	676	powershell.exe	90
PID 676 wrote to memory of 4260	676	powershell.exe	90
PID 676 wrote to memory of 4260	676	powershell.exe	90
PID 676 wrote to memory of 4260	676	powershell.exe	90
PID 676 wrote to memory of 4260	676	powershell.exe	90
PID 4260 wrote to memory of 4908	4260	wab.exe	91
PID 4260 wrote to memory of 4908	4260	wab.exe	91
PID 4260 wrote to memory of 4908	4260	wab.exe	91
PID 4908 wrote to memory of 3784	4908	cmd.exe	93
PID 4908 wrote to memory of 3784	4908	cmd.exe	93
PID 4908 wrote to memory of 3784	4908	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe
"C:\Users\Admin\AppData\Local\Temp\45cc8cde27d45cadec7dfec83f44215b807531439a0b2530f965fa5d4acda1b6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Ethyls=Get-Content 'C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Filmrullerne\Tendance\Unredacted.Sai';$Acronyctous5=$Ethyls.SubString(57591,3);.$Acronyctous5($Ethyls)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:676
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:3464
- - C:\Program Files (x86)\windows mail\wab.exe
    "C:\Program Files (x86)\windows mail\wab.exe"
    3⤵
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of WriteProcessMemory
    PID:4260
  - - 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 "%Rejig% -windowstyle minimized $decimerings=(Get-ItemProperty -Path 'HKCU:\Vicedirektrers\').Swounds;%Rejig% ($decimerings)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4908
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Rejig% -windowstyle minimized $decimerings=(Get-ItemProperty -Path 'HKCU:\Vicedirektrers\').Swounds;%Rejig% ($decimerings)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:3784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Loading Replay Monitor...

Downloads

__PSScriptPolicyTest_pkjmunti.tay.ps1

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

Submit Download

Antenneforeningernes.Sja

Path C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Filmrullerne\Tendance\Antenneforeningernes.Sja
Size 300KB
SHA256 ee07c67d851fbf76ab2fc7a89621bba66555e5e1e373183fdada670caaa02483
MD5 c75a3285e12c84cafceae8ce90f15224
SHA1 026844beef97e3960a210c91883cf01cf341067d
SHA512 cbcc83980825fec7f40aa31eb398699702aa2f8cfe95c6b49a83b07aacb7cbbe61f77358731cf0c772afa6883384d13d9d068774378d79fa86e09df835796dd3
SSDEEP 6144:22j0q9zHgRN6enP0rm6S6cNO6xg6kBdmvPGr4e3IpShYORoyHC:fn9zAXtxg6k6H64e3+SxoB
MD5 SHA1 SHA512 SSDEEP

Submit Download

Unredacted.Sai

Path C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Filmrullerne\Tendance\Unredacted.Sai
Size 56KB
SHA256 28c901a827e59109f467be705332d753c0fabb390ced9c2a69c48110c69d18a5
MD5 b1d727d282df9997c8bbd3d296352191
SHA1 143e2878ec786de7b8ac80958ac8509c9c26746e
SHA512 0d9e30f588ac8c7f3b02a8e2a32ef8159255f89baf88bc05d4db89c3986492d0ba00e07e3da09a5bb64e58971c40260bb3c09712dfcb03e1c69a9554ecf4a80c
SSDEEP 1536:TrVbCEwTZDc1LBlJ5PYy6CZk9F9RDdRslZLhjqHjVRR:kEwTtULBrB5k7vjYLh0VRR
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/676-33-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-31-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-9-0x0000000004D80000-0x0000000004DA2000-memory.dmp

Download

memory/676-10-0x0000000005660000-0x00000000056C6000-memory.dmp

Download

memory/676-11-0x00000000056D0000-0x0000000005736000-memory.dmp

Download

memory/676-6-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-21-0x0000000005840000-0x0000000005B94000-memory.dmp

Download

memory/676-22-0x0000000005D40000-0x0000000005D5E000-memory.dmp

Download

memory/676-23-0x0000000005D90000-0x0000000005DDC000-memory.dmp

Download

memory/676-24-0x0000000006F00000-0x0000000006F96000-memory.dmp

Download

memory/676-25-0x0000000006290000-0x00000000062AA000-memory.dmp

Download

memory/676-26-0x00000000062E0000-0x0000000006302000-memory.dmp

Download

memory/676-27-0x0000000007550000-0x0000000007AF4000-memory.dmp

Download

memory/676-7-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-29-0x0000000008180000-0x00000000087FA000-memory.dmp

Download

memory/676-5-0x0000000073740000-0x0000000073EF0000-memory.dmp

Download

memory/676-8-0x0000000004EC0000-0x00000000054E8000-memory.dmp

Download

memory/676-4-0x0000000002780000-0x00000000027B6000-memory.dmp

Download

memory/676-32-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-35-0x00000000072C0000-0x00000000072C4000-memory.dmp

Download

memory/676-36-0x0000000008800000-0x000000000ACBA000-memory.dmp

Download

memory/676-37-0x0000000008800000-0x000000000ACBA000-memory.dmp

Download

memory/676-39-0x0000000077191000-0x00000000772B1000-memory.dmp

Download

memory/676-40-0x0000000073740000-0x0000000073EF0000-memory.dmp

Download

memory/676-41-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-42-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-46-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-45-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-44-0x00000000027D0000-0x00000000027E0000-memory.dmp

Download

memory/676-54-0x0000000008800000-0x000000000ACBA000-memory.dmp

Download

memory/676-47-0x0000000008800000-0x000000000ACBA000-memory.dmp

Download

memory/676-53-0x0000000073740000-0x0000000073EF0000-memory.dmp

Download

memory/4260-43-0x0000000001090000-0x00000000022E4000-memory.dmp

Download