guloader | 79a98e38753880d1a0a288fc0380de5b6c03c0550007d86ad9fb33685369b0b3

Analysis

max time kernel
24s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2023, 05:39

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General

Target

euassb.exe
Size

339KB
MD5

5e1592f12f2c04eab3731d184298a30b
SHA1

01e5edaa39c9ceead16ed6cedca0744a2242400d
SHA256

79a98e38753880d1a0a288fc0380de5b6c03c0550007d86ad9fb33685369b0b3
SHA512

7d9eac76eb9e1141291e991a30f49a57e2eb50361837c7e71cb8f34b7016639f2e88bf22cf1f4b5546b3486e1d1a16f8d16b50f22006750b0c008c37c520db92
SSDEEP

6144:bmOPbtybqh+/fDv9vE5R1bHfxSqCcoVzqzXLkFmSRr/:ft2W+nz9s5RzCcoszX0mer/

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
4160	euassb.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Degenerer\Isoleringsarbejderne\Dassent\robinsonades.ini	euassb.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
2420	2076	WerFault.exe	95

C:\Users\Admin\AppData\Local\Temp\euassb.exe
"C:\Users\Admin\AppData\Local\Temp\euassb.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\euassb.exe
  "C:\Users\Admin\AppData\Local\Temp\euassb.exe"
  2⤵
  PID:2076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 1240
    3⤵
    - Program crash
    PID:2420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2076 -ip 2076
1⤵
PID:744

Network

MITRE ATT&CK Enterprise v6

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\nsp8766.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
memory/2076-146-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2076-147-0x0000000001660000-0x000000000381E000-memory.dmp

Filesize
33.7MB

Download
memory/2076-152-0x0000000001660000-0x000000000381E000-memory.dmp

Filesize
33.7MB

Download
memory/2076-153-0x0000000001660000-0x000000000381E000-memory.dmp

Filesize
33.7MB

Download
memory/2076-154-0x0000000001660000-0x000000000381E000-memory.dmp

Filesize
33.7MB

Download
memory/2076-161-0x0000000000080000-0x0000000000087000-memory.dmp

Filesize
28KB

Download
memory/2076-162-0x0000000033BE0000-0x0000000033FE0000-memory.dmp

Filesize
4.0MB

Download
memory/2076-163-0x0000000033BE0000-0x0000000033FE0000-memory.dmp

Filesize
4.0MB

Download
memory/2076-164-0x0000000001660000-0x000000000381E000-memory.dmp

Filesize
33.7MB

Download
memory/4160-144-0x00000000049E0000-0x0000000006B9E000-memory.dmp

Filesize
33.7MB

Download
memory/4160-145-0x00000000049E0000-0x0000000006B9E000-memory.dmp

Filesize
33.7MB

Download