guloader | 7dcbdd10f6e8cdf4c3d982ad15810b978a9b269f8ff525ec1e9187a4d0baf715

Analysis

max time kernel
42s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
24/09/2022, 14:24

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General

Target

receipt_001546037_pdf.exe
Size

168KB
MD5

ed26a5be5bfa6cfc95f1366e3efc60e1
SHA1

735d11ea394dcf7cab701af8c63d046a5092cd2c
SHA256

7dcbdd10f6e8cdf4c3d982ad15810b978a9b269f8ff525ec1e9187a4d0baf715
SHA512

cb91472e9548fae2c0b4bc431dca8acef512e1cb9c5b7f2a0b47b97c1011c2f63025bcae3eda6dff9482ff9371fabc5e0ca2c348082716cb794a694dce3e76f1
SSDEEP

3072:x/c/d6j3AaTzfYbFj2Q7M4ZmXIqPpM0xhaxC0dO8c5JZwrmVQt4rgjSy9HdcKSZN:x/c/43A4SFDJUPS0xN8OjRjqEgjSyz+N

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
1280	receipt_001546037_pdf.exe
1280	receipt_001546037_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

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Vekselerfirmaer\Triangulationernes\Packaging.ini	receipt_001546037_pdf.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\receipt_001546037_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\receipt_001546037_pdf.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
PID:1280

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\nsdE1E9.tmp\System.dll

Filesize
12KB

MD5
637e1fa13012a78922b6e98efc0b12e2

SHA1
8012d44e42cd6d813ea63d5ccbf190fe72e3c778

SHA256
703e17d30a91775f8ddc2648b537fc846fad6415589a503a4529c36f60a17439

SHA512
932ed6a52e89c4fa587a7c0c3903d69cf89a32dbd46ed8dcb251abb6c15192d92b1f624c31f0e4bd3e9bf95fc1a55fdb7cee9dd668e1b4f22ddb95786c063e96

Download Submit
\Users\Admin\AppData\Local\Temp\nsdE1E9.tmp\System.dll

Filesize
12KB

MD5
637e1fa13012a78922b6e98efc0b12e2

SHA1
8012d44e42cd6d813ea63d5ccbf190fe72e3c778

SHA256
703e17d30a91775f8ddc2648b537fc846fad6415589a503a4529c36f60a17439

SHA512
932ed6a52e89c4fa587a7c0c3903d69cf89a32dbd46ed8dcb251abb6c15192d92b1f624c31f0e4bd3e9bf95fc1a55fdb7cee9dd668e1b4f22ddb95786c063e96

Download Submit
memory/1280-54-0x0000000075811000-0x0000000075813000-memory.dmp

Filesize
8KB

Download
memory/1280-57-0x0000000003710000-0x0000000003811000-memory.dmp

Filesize
1.0MB

Download
memory/1280-58-0x0000000003710000-0x0000000003811000-memory.dmp

Filesize
1.0MB

Download