guloader | 00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 19:05

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General

Target
z77EU17439-FT-MILKYLUXGOUDAMILD.exe
Size 391KB
Sample240429-xrhdjsag2v
SHA256 00db1acc412cdb3aa45f4d55c18785ae9e8c8d7d2dcfacd8306d1f79a5c20a8c
MD5 1e7b3c55e65b93ed3750462bd4e8d58b
SHA1 abec5b9ca7157ab21fb9a5e72ef01f0a15f11a51
SHA512 b75f4bc04c0ec6c0cc49c06a3290c2bfe53eabb9c530660d295d58273636c512613cf9ebd5246dcd1848f155a51f14eaa7c7dc26ce59a97721d5afecdb69ca2a
SSDEEP 12288:HTg5hqq7yL3B2MWy45NDr6K8AVBQ//pR8iQXL:HTg7qdLxn45pJrVBQnnBQXL
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 = "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\\Halvfemsaarsfdselsdages\\').Milkwood;%Udmark% ($Boblekamre)"	reg.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1064	powershell.exe
2128	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1064 set thread context of 2128	1064	powershell.exe	92

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
3812	reg.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe
1064	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1064	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1064	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 1064	2632	z77EU17439-FT-MILKYLUXGOUDAMILD.exe	85
PID 2632 wrote to memory of 1064	2632	z77EU17439-FT-MILKYLUXGOUDAMILD.exe	85
PID 2632 wrote to memory of 1064	2632	z77EU17439-FT-MILKYLUXGOUDAMILD.exe	85
PID 1064 wrote to memory of 1284	1064	powershell.exe	90
PID 1064 wrote to memory of 1284	1064	powershell.exe	90
PID 1064 wrote to memory of 1284	1064	powershell.exe	90
PID 1064 wrote to memory of 2128	1064	powershell.exe	92
PID 1064 wrote to memory of 2128	1064	powershell.exe	92
PID 1064 wrote to memory of 2128	1064	powershell.exe	92
PID 1064 wrote to memory of 2128	1064	powershell.exe	92
PID 1064 wrote to memory of 2128	1064	powershell.exe	92
PID 2128 wrote to memory of 4664	2128	wab.exe	93
PID 2128 wrote to memory of 4664	2128	wab.exe	93
PID 2128 wrote to memory of 4664	2128	wab.exe	93
PID 4664 wrote to memory of 3812	4664	cmd.exe	95
PID 4664 wrote to memory of 3812	4664	cmd.exe	95
PID 4664 wrote to memory of 3812	4664	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\z77EU17439-FT-MILKYLUXGOUDAMILD.exe
"C:\Users\Admin\AppData\Local\Temp\z77EU17439-FT-MILKYLUXGOUDAMILD.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -windowstyle hidden "$Dimissorernes=Get-Content 'C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Retshandlingerne29.Dat';$Skoletandlges=$Dimissorernes.SubString(59193,3);.$Skoletandlges($Dimissorernes)"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1064
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:1284
- - 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:2128
  - - 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 "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\Halvfemsaarsfdselsdages\').Milkwood;%Udmark% ($Boblekamre)"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4664
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Startup key" /t REG_EXPAND_SZ /d "%Udmark% -windowstyle minimized $Boblekamre=(Get-ItemProperty -Path 'HKCU:\Halvfemsaarsfdselsdages\').Milkwood;%Udmark% ($Boblekamre)"
        5⤵
        Adds Run key to start application
        Modifies registry key
        
        PID:3812

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

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Downloads

__PSScriptPolicyTest_5ldb5qhj.czs.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ldb5qhj.czs.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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Kladdebger.Svi

Path C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Kladdebger.Svi
Size 328KB
SHA256 12b35dc28be02873ee8b345ac4a38eeda408aa7505a2f836aa32e3467d939008
MD5 91f9880b33408373db6257b678a4a0bf
SHA1 912a4ec00cac46c0b15d53d539039a77137bd86e
SHA512 b6747b3d21b8b1e91d212863a2969f1b20b18c4686e71df6fec7d96ff05b74470cd7c063ad7fa47dca467e5e462476feb13b9ddeedfb370283b0fc11a8af454e
SSDEEP 6144:vbFRY9LcAefjFnCjbPEBsYHOwImMGJACDVJK/UsTXhOhGvZz9Rzu00:vn1Ay1CjbPEGYHOwImMGJvVJkUs7hOhV
MD5 SHA1 SHA512 SSDEEP

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Retshandlingerne29.Dat

Path C:\Users\Admin\AppData\Local\tjurhane\fasciolidae\stinksvampen\Retshandlingerne29.Dat
Size 57KB
SHA256 af7a18872951b3eef11a71013231b42a2ef418191580cd16505cb8bd4dae8cde
MD5 6db11b1548b28a3b9b2b3e3147cddc04
SHA1 7f62e36b96a2d2264a21e98b17cbb6b0710f4335
SHA512 7e77a496ea3b44479a20a0e9edfd61fcd322ee6365cda15ab908228b936a6219e6fd3162277e46127e532dc51a95b77cf43506caa60060c426510b9721a531dd
SSDEEP 1536:O9AlzPgMBMNKj108W9jBelSqG3IZCpXYEdzdbbQU3E:8AdPgEMmW9jBkDEpoE1dfpU
MD5 SHA1 SHA512 SSDEEP

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memory/1064-33-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-31-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-9-0x00000000056E0000-0x0000000005702000-memory.dmp

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memory/1064-10-0x0000000006000000-0x0000000006066000-memory.dmp

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memory/1064-6-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-11-0x0000000006070000-0x00000000060D6000-memory.dmp

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memory/1064-21-0x00000000060E0000-0x0000000006434000-memory.dmp

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memory/1064-22-0x00000000066B0000-0x00000000066CE000-memory.dmp

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memory/1064-23-0x00000000066E0000-0x000000000672C000-memory.dmp

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memory/1064-24-0x0000000007690000-0x0000000007726000-memory.dmp

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memory/1064-25-0x0000000006BD0000-0x0000000006BEA000-memory.dmp

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memory/1064-26-0x0000000006C20000-0x0000000006C42000-memory.dmp

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memory/1064-27-0x0000000007CE0000-0x0000000008284000-memory.dmp

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memory/1064-7-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-29-0x0000000008910000-0x0000000008F8A000-memory.dmp

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memory/1064-4-0x00000000030B0000-0x00000000030E6000-memory.dmp

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memory/1064-5-0x00000000735B0000-0x0000000073D60000-memory.dmp

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memory/1064-8-0x0000000005860000-0x0000000005E88000-memory.dmp

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memory/1064-32-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-35-0x0000000007BC0000-0x0000000007BC4000-memory.dmp

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memory/1064-36-0x0000000008F90000-0x000000000A0CD000-memory.dmp

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memory/1064-37-0x0000000008F90000-0x000000000A0CD000-memory.dmp

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memory/1064-39-0x0000000077001000-0x0000000077121000-memory.dmp

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memory/1064-38-0x00000000735B0000-0x0000000073D60000-memory.dmp

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memory/1064-40-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-42-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-43-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-44-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-45-0x0000000003140000-0x0000000003150000-memory.dmp

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memory/1064-54-0x0000000008F90000-0x000000000A0CD000-memory.dmp

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memory/1064-47-0x0000000008F90000-0x000000000A0CD000-memory.dmp

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memory/1064-53-0x00000000735B0000-0x0000000073D60000-memory.dmp

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memory/2128-46-0x0000000001000000-0x0000000002254000-memory.dmp

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