guloader | 2e22c6bd477f822942d1900435f0e879a1f7e41b6e8f118c8df2e2119520de14

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 21:57

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General

Target

f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe
Size

40KB
MD5

f6ef1a6136f4020eea6211db56904d50
SHA1

7ebd6339ea304e1dbe96117250d11758e2286382
SHA256

2e22c6bd477f822942d1900435f0e879a1f7e41b6e8f118c8df2e2119520de14
SHA512

73da1fefaec327bc57381d0ae0be59c062817a653ca7a4b9b916f0a4b4f88e22dadc072d3ceef0fd22a5c431d7a4ee19a27891fbc6c3e453a350949e043f6ca3
SSDEEP

768:UsQvcH/JfZ8bCOXOxXxL7X0f877Z84EFHjy:UsQ0HhhnJu87V8xjy

Score

10^/10

guloader discovery downloader guloader

Malware Config

Extracted

Family

guloader

http://bnsddfhjdfgvbxc.ru/disabler_encrypted_F0749AF.bin

https://drive.google.com/file/d/1XCdocfzNt5EO13N2GeXmsTfCEgvMuPqk/view?usp=sharing

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/4928-2-0x00000000022A0000-0x00000000022A7000-memory.dmp	family_guloader
behavioral2/memory/3800-4-0x0000000001180000-0x0000000001280000-memory.dmp	family_guloader

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe
3800	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4928 set thread context of 3800	4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe	82

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	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 3800	4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe	82
PID 4928 wrote to memory of 3800	4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe	82
PID 4928 wrote to memory of 3800	4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe	82
PID 4928 wrote to memory of 3800	4928	f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe	82

C:\Users\Admin\AppData\Local\Temp\f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6ef1a6136f4020eea6211db56904d50_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:4928
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\f6ef1a6136f4020eea6211db56904d50_JaffaCakes118.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3800

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

Exfiltration

Impact

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Downloads

memory/3800-5-0x0000000077501000-0x0000000077621000-memory.dmp

Filesize
1.1MB

Download
memory/3800-4-0x0000000001180000-0x0000000001280000-memory.dmp

Filesize
1024KB

Download
memory/3800-8-0x0000000001180000-0x0000000001280000-memory.dmp

Filesize
1024KB

Download
memory/4928-2-0x00000000022A0000-0x00000000022A7000-memory.dmp

Filesize
28KB

Download
memory/4928-3-0x0000000077501000-0x0000000077621000-memory.dmp

Filesize
1.1MB

Download
memory/4928-6-0x00000000022A0000-0x00000000022A7000-memory.dmp

Filesize
28KB

Download
memory/4928-7-0x0000000077501000-0x0000000077621000-memory.dmp

Filesize
1.1MB

Download
memory/4928-9-0x00000000022A0000-0x00000000022A7000-memory.dmp

Filesize
28KB

Download