guloader | 55b2f3b82825aa4cbff0c0c6d29d0ffbdf18a095325dfcef9a33d5809d7569ac

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
10/09/2026, 15:16

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General

Target
Purchase Order 2000150816.js
Size 78KB
Sample260910-snmrms1fpb
SHA256 55b2f3b82825aa4cbff0c0c6d29d0ffbdf18a095325dfcef9a33d5809d7569ac
MD5 e383cbf48fca9d0ca6121c5df85361e5
SHA1 a751a4bf46f4a6b985497103ae76b6fa6268ff21
SHA512 32186a26b3f08fcd1dd41c99070a2bef3272ccf9c92fdcda948110851740d98eb2454764f0fbbb330c29441d16fa5f52436185cf8a8d84f10bbe9d043557d1e5
SSDEEP 1536:ggLji/KuAEFQ4Rhte6RPqZ5kAXpgZZWfAp32pIwtjJpy676LxAsdO:ggLjgc4bu6RSvk18Ap32pI+jJpyjLxjO
TLSH
T1FF734A30DA1105764F83BB88BCA906A1CABC9315893744B0F9DACB0D6109DECF77D5AB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader execution guloader

Malware Config

Signatures

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

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	4912	1408	cmd.exe	85

Badlisted process makes network request 5 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
3	1448	wscript.exe
7	2388	powershell.exe
9	2388	powershell.exe
20	2388	powershell.exe
21	2388	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2388	powershell.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\__PSScriptPolicyTest_vxpjkl34.dsg.ps1	powershell.exe
File created	C:\Windows\__PSScriptPolicyTest_fk5cwsbs.sbh.psm1	powershell.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4912	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	backgroundtaskhost.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2388	powershell.exe
2388	powershell.exe
2388	powershell.exe
2388	powershell.exe
2388	powershell.exe
2388	powershell.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2388	powershell.exe
2388	powershell.exe
2388	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2388	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 1376	4912	cmd.exe	88
PID 4912 wrote to memory of 2388	4912	cmd.exe	89
PID 2388 wrote to memory of 5116	2388	powershell.exe	95
PID 2388 wrote to memory of 1048	2388	powershell.exe	96
PID 2388 wrote to memory of 4948	2388	powershell.exe	97
PID 2388 wrote to memory of 2180	2388	powershell.exe	98
PID 2388 wrote to memory of 2180	2388	powershell.exe	98

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Purchase Order 2000150816.js"
1⤵
- Badlisted process makes network request
PID:1448

C:\Windows\system32\cmd.exe
cmd.exe /c echo ^%Tilrevet^% | %Efterabelsens% -
1⤵
- Process spawned unexpected child process
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo %Tilrevet% "
  2⤵
  PID:1376
- \??\c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe
  "c:\windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" -
  2⤵
  - Badlisted process makes network request
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\backgroundtaskhost.exe
    "C:\Windows\SysWOW64\backgroundtaskhost.exe"
    3⤵
    PID:5116
- - C:\Windows\SysWOW64\backgroundtaskhost.exe
    "C:\Windows\SysWOW64\backgroundtaskhost.exe"
    3⤵
    PID:1048
- - C:\Windows\SysWOW64\backgroundtaskhost.exe
    "C:\Windows\SysWOW64\backgroundtaskhost.exe"
    3⤵
    PID:4948
- - C:\Windows\SysWOW64\backgroundtaskhost.exe
    "C:\Windows\SysWOW64\backgroundtaskhost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2180

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

__PSScriptPolicyTest_vxpjkl34.dsg.ps1

Path C:\Windows\__PSScriptPolicyTest_vxpjkl34.dsg.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/2388-22-0x00000000068F0000-0x000000000690A000-memory.dmp

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memory/2388-35-0x0000000008CF0000-0x000000000BC27000-memory.dmp

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memory/2388-7-0x0000000005530000-0x0000000005B58000-memory.dmp

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memory/2388-8-0x0000000005370000-0x0000000005392000-memory.dmp

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memory/2388-9-0x0000000005B60000-0x0000000005BC6000-memory.dmp

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memory/2388-10-0x0000000005BD0000-0x0000000005C36000-memory.dmp

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memory/2388-5-0x00000000029C0000-0x00000000029F6000-memory.dmp

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memory/2388-18-0x0000000005CF0000-0x0000000006044000-memory.dmp

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memory/2388-19-0x0000000006300000-0x000000000631E000-memory.dmp

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memory/2388-20-0x00000000063B0000-0x00000000063FC000-memory.dmp

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memory/2388-21-0x0000000007B10000-0x000000000818A000-memory.dmp

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memory/2388-4-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-6-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-25-0x0000000008740000-0x0000000008CE4000-memory.dmp

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memory/2388-23-0x00000000077D0000-0x0000000007866000-memory.dmp

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memory/2388-26-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-27-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-28-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-30-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-33-0x0000000002950000-0x0000000002960000-memory.dmp

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memory/2388-34-0x0000000007AA0000-0x0000000007AA3000-memory.dmp

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memory/2388-24-0x0000000007380000-0x00000000073A2000-memory.dmp

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memory/2388-36-0x0000000008CF0000-0x000000000BC27000-memory.dmp

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memory/2388-37-0x0000000007AA0000-0x0000000007AA3000-memory.dmp

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memory/2388-38-0x0000000008CF0000-0x000000000BC27000-memory.dmp

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