guloader | aac13b3f25b043fcc1baaa1481ab241a4845ff0d978fe86a455deaf28cedd352

Analysis

max time kernel
91s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
23/05/2022, 12:34

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General

Target
EUR_Cert_3883774784847_CMR8494849.pdf.scr.exe
Size 462KB
Sample220523-prryzsddd3
SHA256 aac13b3f25b043fcc1baaa1481ab241a4845ff0d978fe86a455deaf28cedd352
MD5 f51029776cf59c102ed0e1c757484e8b
SHA1 2331eaecdd1da03fc229c8639cddc03ccc34e18f
SHA512 40762fbd34e5773ed40b4bad28e67d6f7faac70819da5d82f0aedf43efe541852cd78583704af2fb343b3fdc0a2294cb70ad4f3e5231d179e2318fcc63f7ae47
MD5 SHA1 SHA512

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
1708	EUR_Cert_3883774784847_CMR8494849.pdf.scr.exe

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

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\EUR_Cert_3883774784847_CMR8494849.pdf.scr.exe
"C:\Users\Admin\AppData\Local\Temp\EUR_Cert_3883774784847_CMR8494849.pdf.scr.exe"
1⤵
- Loads dropped DLL
PID:1708

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

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsi9D4F.tmp\System.dll
Size 12KB
SHA256 8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 cff85c549d536f651d4fb8387f1976f2
SHA1 d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
SHA512 531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88
SSDEEP 192:Zjvco0qWTlt70m5Aj/lQ0sEWD/wtYbBHFNaDybC7y+XBz0QPi:FHQlt70mij/lQRv/9VMjzr
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1708-131-0x0000000004560000-0x0000000004670000-memory.dmp

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