guloader | cf43a0cb9336edd836e5a2569e6c6f972ae193143b3740bacf09be78ac80a928

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
20-12-2022 14:06

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General

Target

DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe
Size

513KB
MD5

a52478e75fbb20e4d0c2de385db1b3ce
SHA1

ed9a76bd4c286c2b7ffa7b0bf5b66db2a1eb1088
SHA256

88784edc4183537c005102816de40a74499b1261a416eb02fcf1dbcc634b349b
SHA512

d2e0abab3c5bc436f2131d231761ba2539a9280781b3fa7eeac3f6a4a8c9d38c7d5d0ccdea952c5c2fe91e0803467eef1a583defedf7e7efd4d561d5d2d31d1c
SSDEEP

12288:L3LuHzF7bje6/+3lRe+Q3JRtB1Ir/YJGPm030VDbHQ:WTF7PK3lRe+W5D8/YguHQ

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe

pid process

1588 DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1588	DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe

C:\Users\Admin\AppData\Local\Temp\DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\DHL online Customer AWB Shipping Docs.Commercial Invoice. Packing List. BL Draft THS0094587231.pdf.exe"
1⤵
- Loads dropped DLL
PID:1588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsiE83.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
memory/1588-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp

Filesize
8KB

Download
memory/1588-56-0x0000000002540000-0x000000000318A000-memory.dmp

Filesize
12.3MB

Download
memory/1588-57-0x0000000002540000-0x000000000318A000-memory.dmp

Filesize
12.3MB

Download