guloader | 721c885321d1c1bde1fc7dec431bdbc2850815bfcaf6b34e8c106f0d381f8498

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
15/06/2024, 23:31

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General

Target

b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe
Size

36KB
MD5

b0ae0b6594e872428a8782911dad0c84
SHA1

334ae0967b40c43d1a7496007185bc09205442f0
SHA256

721c885321d1c1bde1fc7dec431bdbc2850815bfcaf6b34e8c106f0d381f8498
SHA512

1f1cc155c77d07e9a20d6dc6383ec8902af7e6c99eeb81109bdf7d134503d3415b21bf0ad1a237777c1f4b0843d76186efbdc7bd0b37d8eba478c204cdd87acf
SSDEEP

768:gusI1m/D/QeZcGTcl09y/ZwiiEh7wkV8VP:7sqmrXzcl09y/vh7wU8VP

Score

10^/10

guloader downloader

Malware Config

Extracted

Family

guloader

http://castmart.ga/~zadmin/ecloud/nklo_encrypted_3668BE0.bin

xor.base64

Signatures

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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe
1276	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 932 set thread context of 1276	932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe	89

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 932 wrote to memory of 1276	932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe	89
PID 932 wrote to memory of 1276	932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe	89
PID 932 wrote to memory of 1276	932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe	89
PID 932 wrote to memory of 1276	932	b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe	89

C:\Users\Admin\AppData\Local\Temp\b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:932
- C:\Users\Admin\AppData\Local\Temp\b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\b0ae0b6594e872428a8782911dad0c84_JaffaCakes118.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:1276

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4108,i,12594301322143882025,16832588342008839449,262144 --variations-seed-version --mojo-platform-channel-handle=4028 /prefetch:8
1⤵
PID:3160

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/932-2-0x0000000002090000-0x0000000002097000-memory.dmp

Filesize
28KB

Download
memory/932-5-0x0000000002090000-0x0000000002097000-memory.dmp

Filesize
28KB

Download
memory/932-6-0x00000000777A1000-0x00000000778C1000-memory.dmp

Filesize
1.1MB

Download
memory/932-9-0x00000000777A1000-0x00000000778C1000-memory.dmp

Filesize
1.1MB

Download
memory/1276-3-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/1276-8-0x00000000777A1000-0x00000000778C1000-memory.dmp

Filesize
1.1MB

Download
memory/1276-7-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download