guloader | 938e6fc0fd0e807fbc548f44d0b6e18589e99aea39449ae0bc2e6f5406824b59

Analysis

max time kernel
93s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 21:35

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General

Target

MORK095434567890.PDF.exe
Size

142KB
MD5

835fbcba74e794db42ef2a52d9155d82
SHA1

99e05046bfd1a9cb6bb2479106a18862623e9bd4
SHA256

0c0df1fa2c8daf189de955db2390ed192692e8d011bf28488e55ed4cc2adbaee
SHA512

f602f8078e36586e4625b992ca6cb7970e9ed1f0daa19fd21e4beb1266d9308a015ad7568806ec6fce57628d5b027e4474ac37ad7206ff6e049a25f719996cd1
SSDEEP

3072:N1T//IHWyWJADJuaXmrbDb+x1IbqKswR4fzcC1osBg7XneldEszWxMF:7//I2y3dX0Db+xU7swKfQYBAneld7d

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1712	MORK095434567890.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).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MORK095434567890.PDF.exe

C:\Users\Admin\AppData\Local\Temp\MORK095434567890.PDF.exe
"C:\Users\Admin\AppData\Local\Temp\MORK095434567890.PDF.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nstB4DA.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Closestool.ini

Filesize
40B

MD5
550d45f9054da69ce0c0dde8c4b4e415

SHA1
82cce0309d229ebf5fd668e6d150f53442e64a7f

SHA256
a8a18540676218ff133c951b7d981e1e5b5ff0f3e2fb2aed5a8abc0ce02c956f

SHA512
189cbb9b9ad4c23536eeb0ea41df8834fd85b5eadbb996fc751240ee2b51c3062d77499668b3ede8c6093fce13e5e9fd05537e74d93cc99c44328c05012388f3

Download Submit
memory/1712-245-0x0000000002C60000-0x0000000002D61000-memory.dmp

Filesize
1.0MB

Download
memory/1712-246-0x0000000002C60000-0x0000000002D61000-memory.dmp

Filesize
1.0MB

Download