guloader | 40cdd093ba008a7793e8e75e015b4a1e627391865d3d4f863fe4f3c90f1b8fdc

Analysis

max time kernel
405s
max time network
407s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
19-12-2022 17:15

Target

GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe
Size

504KB
MD5

129a36dcc6d70013044a17edae59afc7
SHA1

2e35c48f7cb08a4465fe1e6806abfd4109604954
SHA256

a3e2e5e8102c7b974d1782bd87f75add6aafced9d91563deff0a56790ba20424
SHA512

82db999c21e5bf3d8120819c35ae50e36f524c44c5290ff27190422c2a0b422e0ce4d7241d08ea663f71109bb9d1944ce2d5021b539377f29b9ef9eb01293bb4
SSDEEP

12288:Hclp1paBxEg+9Jq/WLwEzF8wHkrB6RIt7lt0+lJOorl1:HCnanE99wtEzOwWB6K7lt0+Gwl1

Score

10^/10

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

Processes:

GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

pid process

1784 GENERAL MOTORS TECHNICAL CENTER DEC ORDER_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

pid	process
1784	GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

Drops file in Program Files directory 1 IoCs

Processes:

GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\Straffebestemmelserne\Straagult\Lagerpladsen\Vrelsestyper.Exe	GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

Drops file in Windows directory 2 IoCs

Processes:

GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

description	ioc	process
File opened for modification	C:\Windows\resources\0409\Excessens.Sto	GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe
File opened for modification	C:\Windows\resources\0409\Ureameter\trinucleate\Konjunkturgevinsten.ini	GENERAL MOTORS TECHNICAL CENTER DEC ORDER_pdf.exe

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

System Information Discovery
T1082

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

\Users\Admin\AppData\Local\Temp\nsx1E06.tmp\System.dll

Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1784-54-0x00000000767F1000-0x00000000767F3000-memory.dmp

Filesize
8KB

Download
memory/1784-56-0x0000000002470000-0x00000000030BA000-memory.dmp

Filesize
12.3MB

Download
memory/1784-57-0x0000000002470000-0x00000000030BA000-memory.dmp

Filesize
12.3MB

Download