guloader | ceaf962f2087e570174e4f9bd516d6c57efbc65ca8ade121b7628f420050d6d9

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-11-2024 08:03

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General

Target

Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe
Size

401KB
MD5

a62db3b4c45f6012c0951c72be7e339a
SHA1

635ddbd1e2884f847fa3e60fd547e8dc958af4d1
SHA256

82f6981ed7bd0008afe2369debe26bfd84d7e9ee5d54e4741ebb3e29c3794e8e
SHA512

f2f72f9ebae0339adba033689e42d9eb7ad7c79ed759c01283c5d1ec2bf24e2a983ba495fec3d5ec14c40f97ccd4c86e155822fb3e5400057f16c3a9a32625c7
SSDEEP

12288:z0m2XWPUR9fBnEwEe6V0Lu6eRmwVbVsCI/:ujvZnEdfgegwVbVsX

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 2 IoCs

pid	Process
1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe
1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1912	1968	WerFault.exe	30

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	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1912	1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe	31
PID 1968 wrote to memory of 1912	1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe	31
PID 1968 wrote to memory of 1912	1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe	31
PID 1968 wrote to memory of 1912	1968	Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe	31

C:\Users\Admin\AppData\Local\Temp\Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe
"C:\Users\Admin\AppData\Local\Temp\Staff Attendance Submission for Payroll Processing (July 07 - November 07, 2024) PDF.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1968 -s 528
  2⤵
  - Program crash
  PID:1912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsoE15B.tmp\System.dll

Filesize
11KB

MD5
34442e1e0c2870341df55e1b7b3cccdc

SHA1
99b2fa21aead4b6ccd8ff2f6d3d3453a51d9c70c

SHA256
269d232712c86983336badb40b9e55e80052d8389ed095ebf9214964d43b6bb1

SHA512
4a8c57fb12997438b488b862f3fc9dc0f236e07bb47b2bce6053dcb03ac7ad171842f02ac749f02dda4719c681d186330524cd2953d33cb50854844e74b33d51

Download Submit
memory/1968-27-0x00000000037E0000-0x0000000005236000-memory.dmp

Filesize
26.3MB

Download
memory/1968-28-0x00000000037E0000-0x0000000005236000-memory.dmp

Filesize
26.3MB

Download