guloader | 1d3a4b188ed5f70862cf8dc67c9ccb1cae2b2f94ee847c3e1504ac13721eadd1

Analysis

max time kernel
126s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
10/08/2023, 06:22

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General

Target
報價請求 (NTU 202308-10TW)·pdf.exe
Size 985KB
Sample230810-g4ynascc8x
SHA256 1d3a4b188ed5f70862cf8dc67c9ccb1cae2b2f94ee847c3e1504ac13721eadd1
MD5 4267367fe2f39a1b7f2af8b01bdc9a09
SHA1 a0157d55e861e23b41353a7093dbde6a2c8ed885
SHA512 4d65b94e2c5852154c980e6cec4e2475476cd34ab55c9fc9e2ffe3c9d957279ecdcba8f7e6d863348b87761eb16f01561ea485e26b87c2ef4bbb996e83792694
SSDEEP 24576:IFiS4QH1OeoVhlbP0HEjiCs0IcdNaI+TpZcOe26:/SpweiP5eTyNdypuOy
MD5 SHA1 SHA512 SSDEEP

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
2416	報價請求 (NTU 202308-10TW)·pdf.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2968	2416	WerFault.exe	81

C:\Users\Admin\AppData\Local\Temp\報價請求 (NTU 202308-10TW)·pdf.exe
"C:\Users\Admin\AppData\Local\Temp\報價請求 (NTU 202308-10TW)·pdf.exe"
1⤵
- Loads dropped DLL
PID:2416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2416 -s 996
  2⤵
  - Program crash
  PID:2968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2416 -ip 2416
1⤵
PID:60

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

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsz9D1C.tmp\System.dll
Size 11KB
SHA256 f0cd96e0b6e40f92ad1aa0efacde833bae807b92fca19bf062c1cf8acf29484b
MD5 b853d5d2361ade731e33e882707efc34
SHA1 c58b1aeabdf1cbb8334ef8797e7aceaa7a1cb6be
SHA512 8ea31d82ffa6f58dab5632fe72690d3a6db0be65aec85fc8a1f71626773c0974dcebefae17bcf67c4c56ef442545e985eea0b348ff6e4fc36740640092b08d69
SSDEEP 192:eA2HS+ihg200uWz947Wzvxu6v0MI7JOde+Ij5Z77dslFsEf:mS62Gw947ExuGDI7J8EF7KIE
MD5 SHA1 SHA512 SSDEEP

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memory/2416-143-0x0000000004590000-0x00000000072D8000-memory.dmp

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memory/2416-144-0x0000000004590000-0x00000000072D8000-memory.dmp

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memory/2416-145-0x0000000004590000-0x00000000072D8000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads