guloader | 0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
2000	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-1-5-21-3452737119-3959686427-228443150-1000\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
2612	wab.exe
2612	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2000	powershell.exe
2612	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2000 set thread context of 2612	2000	powershell.exe	32

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
2456	reg.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe
2000	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2000	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2000	2876	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	28
PID 2876 wrote to memory of 2000	2876	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	28
PID 2876 wrote to memory of 2000	2876	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	28
PID 2876 wrote to memory of 2000	2876	0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe	28
PID 2000 wrote to memory of 2656	2000	powershell.exe	30
PID 2000 wrote to memory of 2656	2000	powershell.exe	30
PID 2000 wrote to memory of 2656	2000	powershell.exe	30
PID 2000 wrote to memory of 2656	2000	powershell.exe	30
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2000 wrote to memory of 2612	2000	powershell.exe	32
PID 2612 wrote to memory of 2744	2612	wab.exe	33
PID 2612 wrote to memory of 2744	2612	wab.exe	33
PID 2612 wrote to memory of 2744	2612	wab.exe	33
PID 2612 wrote to memory of 2744	2612	wab.exe	33
PID 2744 wrote to memory of 2456	2744	cmd.exe	35
PID 2744 wrote to memory of 2456	2744	cmd.exe	35
PID 2744 wrote to memory of 2456	2744	cmd.exe	35
PID 2744 wrote to memory of 2456	2744	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe
"C:\Users\Admin\AppData\Local\Temp\0159563d865827167aabbd08bb46d6e417824038c3da287d86e9685f09b4f503.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2000
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" "/c set /A 1^^0"
    3⤵
    PID:2656
- - 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 WriteProcessMemory
    PID:2612
  - - 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:2744
    - - 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:2456

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

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Size 68KB
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
SSDEEP 1536:iMveRG6BWC7T2g1wGUa5QUoaIB9ttiFJG+AOQOXl0Usvwr:feRG6BX6gUaHo9tkBHiUewr
MD5 SHA1 SHA512 SSDEEP

Submit Download

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Size 344B
SHA256 0b5ea893f2af7f2da451a7d2dfba517515abc68776e102a70d3c55dc661356fa
MD5 e59afe1f27207ea9fbdadd446f958fd8
SHA1 614c38af2084502f9dca91f49c651302f9064064
SHA512 48989ae30d3032ac27b2fa480e1496ac4e0da3caf6799ec657d07f683635a0e80eee817b0434803a611726a31c27bf884402aa600541404edb92ab7e7f3802cb
MD5 SHA1 SHA512

Submit Download

Cab515D.tmp

Path C:\Users\Admin\AppData\Local\Temp\Cab515D.tmp
Size 65KB
SHA256 c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
MD5 ac05d27423a85adc1622c714f2cb6184
SHA1 b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA512 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
SSDEEP 1536:drFvD2YSE/sFDqV0FJJynkAhftCvMd3coa282frgW1qgNzU:drVDJSeaDqV0FJwLhVkr282fF5U
MD5 SHA1 SHA512 SSDEEP

Submit Download

Tar52F9.tmp

Path C:\Users\Admin\AppData\Local\Temp\Tar52F9.tmp
Size 177KB
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
SSDEEP 1536:fAo/J+lCUsTRvsqgCyqWlUDNWdm1wpSru2A0XwjY/z02DTr3rmt6mJ:f/J+qTR0XCy/dmASru2Aijbdq
MD5 SHA1 SHA512 SSDEEP

Submit Download

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

Submit Download

memory/2000-9-0x0000000073F31000-0x0000000073F32000-memory.dmp

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memory/2000-17-0x0000000006750000-0x0000000008E1E000-memory.dmp

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memory/2000-12-0x0000000073F30000-0x00000000744DB000-memory.dmp

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memory/2000-13-0x0000000073F30000-0x00000000744DB000-memory.dmp

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memory/2000-11-0x0000000073F30000-0x00000000744DB000-memory.dmp

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memory/2000-10-0x0000000073F30000-0x00000000744DB000-memory.dmp

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memory/2000-103-0x0000000073F30000-0x00000000744DB000-memory.dmp

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memory/2612-101-0x0000000001C90000-0x000000000435E000-memory.dmp

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