guloader | 048455f6416671249ff633c4a0525bb6bb2d6d871de7b74438247c719c2b2103

Analysis

max time kernel
135s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2024 07:12

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General

Target

dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe
Size

96KB
MD5

dded910ff442d3314400dcd0e7e699ee
SHA1

0c11115fd32e2ad3f4b9cf514a4d088b80c61917
SHA256

048455f6416671249ff633c4a0525bb6bb2d6d871de7b74438247c719c2b2103
SHA512

58d51860f2767d70edc18b958540717f5607466c88a193652a324b2646573221a810f11bfd1c317bcacd92fe2aa0754cabc1e0a37fd4037fde8f052a50a504b2
SSDEEP

768:5bUtftRf4UxdhR3evOk4PmvX4OdBh9Ckt0mCIpn942KjNZ:FU574UxdX3eWNM4QBhQkLXn9lKjz

Score

10^/10

guloader discovery downloader guloader

Malware Config

Extracted

Family

guloader

https://drive.google.com/uc?export=download&id=1-oABThuFsnkg4zSME6JGpnZMWcavHifR

xor.base64

Signatures

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

Guloader payload 2 IoCs

guloader

resource	yara_rule
behavioral2/memory/2428-2-0x0000000002100000-0x0000000002110000-memory.dmp	family_guloader
behavioral2/memory/2416-4-0x0000000000B00000-0x0000000000C00000-memory.dmp	family_guloader

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
12	drive.google.com
13	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe
2416	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2428 set thread context of 2416	2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe	93

System Location Discovery: System Language Discovery 1 TTPs 2 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	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 2416	2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe	93
PID 2428 wrote to memory of 2416	2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe	93
PID 2428 wrote to memory of 2416	2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe	93
PID 2428 wrote to memory of 2416	2428	dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe	93

C:\Users\Admin\AppData\Local\Temp\dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\dded910ff442d3314400dcd0e7e699ee_JaffaCakes118.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/2416-4-0x0000000000B00000-0x0000000000C00000-memory.dmp

Filesize
1024KB

Download
memory/2428-2-0x0000000002100000-0x0000000002110000-memory.dmp

Filesize
64KB

Download
memory/2428-3-0x0000000076FD1000-0x00000000770F1000-memory.dmp

Filesize
1.1MB

Download
memory/2428-14-0x0000000002100000-0x0000000002110000-memory.dmp

Filesize
64KB

Download
memory/2428-15-0x0000000002100000-0x0000000002110000-memory.dmp

Filesize
64KB

Download