guloader | 9f70912fae9db5a46014201384d8696a8ac7f6459b5e4320efa063881c6cab94

Analysis

max time kernel
152s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2024, 14:07

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General

Target
67cfcd1d67977b4570cdf2623433b978.exe
Size 48KB
Sample240119-rezt6sgad2
SHA256 9f70912fae9db5a46014201384d8696a8ac7f6459b5e4320efa063881c6cab94
MD5 67cfcd1d67977b4570cdf2623433b978
SHA1 ec8db68f1edfb96b7c5ccca75f84e5991efdd9be
SHA512 e6776f06edff93707ca798d5f044cc39e63f3dba837ebc668bc9ce8c4f0394fe8b1c1a22d8aeb65e9a7195cfe13b650e4b6fb6654a5fdbaccf8ffc69b9236b93
SSDEEP 384:pJr/ABPXxqAeJfI39JFSo723QPdOmCRJrTQOEABlayQo2Hv0pcl9C5X5UhFFmO:Lr/AhXxqzI393CIdOZgr4abfH/+oFFm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader persistence

Malware Config

Extracted

Family

guloader

https://docxuploads.com/Server_encrypted_6CF2DC0.bin
https://pacieinco.com/Server_encrypted_6CF2DC0.bin

xor.base64

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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\epiklesi = "C:\\Users\\Admin\\Afladskrm6\\Misway2.exe"	ieinstal.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1784	67cfcd1d67977b4570cdf2623433b978.exe
4856	ieinstal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1784 set thread context of 4856	1784	67cfcd1d67977b4570cdf2623433b978.exe	100

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
1784	67cfcd1d67977b4570cdf2623433b978.exe
1784	67cfcd1d67977b4570cdf2623433b978.exe
1784	67cfcd1d67977b4570cdf2623433b978.exe
1784	67cfcd1d67977b4570cdf2623433b978.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1784	67cfcd1d67977b4570cdf2623433b978.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 3688	1784	67cfcd1d67977b4570cdf2623433b978.exe	97
PID 1784 wrote to memory of 3688	1784	67cfcd1d67977b4570cdf2623433b978.exe	97
PID 1784 wrote to memory of 3688	1784	67cfcd1d67977b4570cdf2623433b978.exe	97
PID 1784 wrote to memory of 1108	1784	67cfcd1d67977b4570cdf2623433b978.exe	98
PID 1784 wrote to memory of 1108	1784	67cfcd1d67977b4570cdf2623433b978.exe	98
PID 1784 wrote to memory of 1108	1784	67cfcd1d67977b4570cdf2623433b978.exe	98
PID 1784 wrote to memory of 392	1784	67cfcd1d67977b4570cdf2623433b978.exe	99
PID 1784 wrote to memory of 392	1784	67cfcd1d67977b4570cdf2623433b978.exe	99
PID 1784 wrote to memory of 392	1784	67cfcd1d67977b4570cdf2623433b978.exe	99
PID 1784 wrote to memory of 4856	1784	67cfcd1d67977b4570cdf2623433b978.exe	100
PID 1784 wrote to memory of 4856	1784	67cfcd1d67977b4570cdf2623433b978.exe	100
PID 1784 wrote to memory of 4856	1784	67cfcd1d67977b4570cdf2623433b978.exe	100
PID 1784 wrote to memory of 4856	1784	67cfcd1d67977b4570cdf2623433b978.exe	100

C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe
"C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe"
  2⤵
  PID:3688
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe"
  2⤵
  PID:1108
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe"
  2⤵
  PID:392
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Users\Admin\AppData\Local\Temp\67cfcd1d67977b4570cdf2623433b978.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:4856

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1784-2-0x0000000002240000-0x0000000002248000-memory.dmp

Download

memory/1784-3-0x0000000077391000-0x00000000774B1000-memory.dmp

Download

memory/1784-8-0x0000000002240000-0x0000000002248000-memory.dmp

Download

memory/1784-9-0x0000000077391000-0x00000000774B1000-memory.dmp

Download

memory/1784-10-0x0000000002240000-0x0000000002248000-memory.dmp

Download

memory/4856-4-0x0000000000EC0000-0x0000000000FC0000-memory.dmp

Download

memory/4856-5-0x0000000000EC0000-0x0000000000FC0000-memory.dmp

Download

memory/4856-6-0x0000000077391000-0x00000000774B1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads