guloader | 8603449abec4bd7d7a34dae843e77b981d8b28955177cc46f1c0d0141ff582ea

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26/09/2024, 14:38

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General

Target

f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe
Size

60KB
MD5

f895405151cd97df731854ba8ce6ac7b
SHA1

e4e24dd039bec087f1239c8559a9395ae7332870
SHA256

8603449abec4bd7d7a34dae843e77b981d8b28955177cc46f1c0d0141ff582ea
SHA512

00475b4ecfa4bddcd7ce4e1f6af591c9848edb54ee75659232c7cf8e1be3af4531838e9edd2100815ac04e952c11602b5058d4adeb2f06642beea26d5e0abd34
SSDEEP

768:mfqvp1Iywe57Hg2tm+ykDPfqR2wIosk9pnJS7:dvEo1g2JDPC4oDpnJk

Score

10^/10

guloader discovery downloader guloader

Malware Config

Extracted

Family

guloader

http://rkpllaw.com/DRETH_encrypted_1FC11A0.bin

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/3848-2-0x00000000029A0000-0x00000000029AA000-memory.dmp	family_guloader
behavioral2/memory/1824-4-0x0000000001200000-0x0000000001300000-memory.dmp	family_guloader

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe
1824	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3848 set thread context of 1824	3848	f895405151cd97df731854ba8ce6ac7b_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	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 1824	3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe	82
PID 3848 wrote to memory of 1824	3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe	82
PID 3848 wrote to memory of 1824	3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe	82
PID 3848 wrote to memory of 1824	3848	f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe	82

C:\Users\Admin\AppData\Local\Temp\f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f895405151cd97df731854ba8ce6ac7b_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:3848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\f895405151cd97df731854ba8ce6ac7b_JaffaCakes118.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:1824

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

Replay Monitor

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Downloads

memory/1824-5-0x0000000077891000-0x00000000779B1000-memory.dmp

Filesize
1.1MB

Download
memory/1824-4-0x0000000001200000-0x0000000001300000-memory.dmp

Filesize
1024KB

Download
memory/1824-7-0x0000000001200000-0x0000000001300000-memory.dmp

Filesize
1024KB

Download
memory/3848-2-0x00000000029A0000-0x00000000029AA000-memory.dmp

Filesize
40KB

Download
memory/3848-3-0x0000000077891000-0x00000000779B1000-memory.dmp

Filesize
1.1MB

Download
memory/3848-6-0x00000000029A0000-0x00000000029AA000-memory.dmp

Filesize
40KB

Download
memory/3848-8-0x00000000029A0000-0x00000000029AA000-memory.dmp

Filesize
40KB

Download