guloader | 6f476c63a6d699d1f0166313deb1e0f623c689882de8411bcd4f0b4f880526dd

Analysis

max time kernel
149s
max time network
149s
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, 20:22

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General

Target

f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
Size

120KB
MD5

f6cb0491f71c8470bf6012a36a7fb4ef
SHA1

ecb9b1f54d73a0ae7d312cf5e51714a871d0ddde
SHA256

6f476c63a6d699d1f0166313deb1e0f623c689882de8411bcd4f0b4f880526dd
SHA512

6633debd6ff2987231d8aa5c9e74c68636ec653c7423e5aaf5376724a6858981abac47780731c9c69375226d7b970545b43522757ba31f127fad16dfca1a54b4
SSDEEP

1536:qMPWczFRB6REkV4Y1M7wrZzj5hsRUe9CdmGKtWWcHvZx0FpSvZpD7o4VOSD:xWcznaEG4YuIZfIUeomGDhHR2ncIS

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
3780	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 512 set thread context of 3780	512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe	82

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4568	3780	WerFault.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	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 512 wrote to memory of 3780	512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe	82
PID 512 wrote to memory of 3780	512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe	82
PID 512 wrote to memory of 3780	512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe	82
PID 512 wrote to memory of 3780	512	f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe	82

C:\Users\Admin\AppData\Local\Temp\f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe"
1⤵
- Checks QEMU agent file
- 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:512
- C:\Users\Admin\AppData\Local\Temp\f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f6cb0491f71c8470bf6012a36a7fb4ef_JaffaCakes118.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3780
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3780 -s 1252
    3⤵
    - Program crash
    PID:4568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3780 -ip 3780
1⤵
PID:1096

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

memory/512-2-0x0000000002220000-0x0000000002233000-memory.dmp

Filesize
76KB

Download
memory/512-3-0x00000000779D1000-0x0000000077AF1000-memory.dmp

Filesize
1.1MB

Download
memory/512-4-0x0000000002220000-0x0000000002233000-memory.dmp

Filesize
76KB

Download
memory/3780-5-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/3780-7-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3780-8-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3780-9-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download