guloader | fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348

Analysis

max time kernel
143s
max time network
268s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
26-07-2023 08:00

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General

Target

wininit.exe
Size

502KB
MD5

614ef8a46ff7b0f353b6ce2540c30d8e
SHA1

66a6643ee7961e6785350e166e9d44ef0ee637c1
SHA256

fc423870796dff42517d1695ac87a45b54e52f18a76184ea31f64ec778f80348
SHA512

8462dd8f937fc048126dbc4d112ff9301655837b764561c0cc6b845cf71f25909c14ee6e88d9d95c388ea8edd7c384ab0886456336deaa8d606411b639dfab9d
SSDEEP

12288:RcXBjshx9i0l9xWTKXH34GzOCAmYNdCi3aEAg0f0BpvmcUlxMUJ:RSBjaMGv3zOCaRsgkCuPIG

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1164	wininit.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ausonian.mon	wininit.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\disembroil\Nonmaternally\morarenternes\etiolize.ini	wininit.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\represents\Photosynthesis\divertissementet.Blo	wininit.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\wininit.exe
"C:\Users\Admin\AppData\Local\Temp\wininit.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
PID:1164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsx4B7D.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1164-139-0x00000000048F0000-0x0000000005DBC000-memory.dmp

Filesize
20.8MB

Download
memory/1164-140-0x00000000048F0000-0x0000000005DBC000-memory.dmp

Filesize
20.8MB

Download