guloader | 04fd4bdd959ef2dbc5b2cfa6bbd3c43ab6efe17f8b7b207674609632366ecaa3

General

Target

03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
Size

96KB
MD5

03f891aeb8fd33cd03997d9bcc61d226
SHA1

bb12d2d8bc7d3e049cdcda106a14090ee040402f
SHA256

04fd4bdd959ef2dbc5b2cfa6bbd3c43ab6efe17f8b7b207674609632366ecaa3
SHA512

86a7d98adc152b936dde1ccf424b006037761a9759d37156bdf9f2e84c8187f8ea06696b2863f812b2c08b4ca9c16af05a3eecf1b23a336056c25d8a23e55cbb
SSDEEP

768:6QRDFK7Eii2bH6euqSQ77Vh1P1BL6C26Ks1QWDC19Q26nfaslZTb:6QRQw72baejLZ31Qd165fXF

Score

10^/10

guloader downloader persistence

Malware Config

Extracted

Family

guloader

C2

https://bngsmartshop.com/frank.bin

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2796	filename1.exe

Loads dropped DLL 3 IoCs

pid	Process
2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2772	filename1.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.vbs"	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.vbs"	filename1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2796	filename1.exe
2772	filename1.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2452 set thread context of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2796 set thread context of 2772	2796	filename1.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2796	filename1.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2796	filename1.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2452 wrote to memory of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2452 wrote to memory of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2452 wrote to memory of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2452 wrote to memory of 2608	2452	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	28
PID 2608 wrote to memory of 2796	2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	29
PID 2608 wrote to memory of 2796	2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	29
PID 2608 wrote to memory of 2796	2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	29
PID 2608 wrote to memory of 2796	2608	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	29
PID 2796 wrote to memory of 2772	2796	filename1.exe	30
PID 2796 wrote to memory of 2772	2796	filename1.exe	30
PID 2796 wrote to memory of 2772	2796	filename1.exe	30
PID 2796 wrote to memory of 2772	2796	filename1.exe	30
PID 2796 wrote to memory of 2772	2796	filename1.exe	30

C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Users\Admin\subfolder1\filename1.exe
    "C:\Users\Admin\subfolder1\filename1.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2796
  - - C:\Users\Admin\subfolder1\filename1.exe
      "C:\Users\Admin\subfolder1\filename1.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\subfolder1\filename1.exe

Filesize
96KB

MD5
03f891aeb8fd33cd03997d9bcc61d226

SHA1
bb12d2d8bc7d3e049cdcda106a14090ee040402f

SHA256
04fd4bdd959ef2dbc5b2cfa6bbd3c43ab6efe17f8b7b207674609632366ecaa3

SHA512
86a7d98adc152b936dde1ccf424b006037761a9759d37156bdf9f2e84c8187f8ea06696b2863f812b2c08b4ca9c16af05a3eecf1b23a336056c25d8a23e55cbb

Download Submit
memory/2452-2-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/2452-3-0x0000000077C40000-0x0000000077DE9000-memory.dmp

Filesize
1.7MB

Download
memory/2452-7-0x0000000077E30000-0x0000000077F06000-memory.dmp

Filesize
856KB

Download
memory/2452-6-0x00000000003D0000-0x00000000003E0000-memory.dmp

Filesize
64KB

Download
memory/2608-9-0x0000000077C40000-0x0000000077DE9000-memory.dmp

Filesize
1.7MB

Download
memory/2608-8-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/2608-11-0x0000000077E30000-0x0000000077F06000-memory.dmp

Filesize
856KB

Download
memory/2608-4-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2608-21-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2772-31-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/2796-25-0x0000000077C40000-0x0000000077DE9000-memory.dmp

Filesize
1.7MB

Download
memory/2796-24-0x00000000002A0000-0x00000000002B0000-memory.dmp

Filesize
64KB

Download
memory/2796-28-0x00000000002A0000-0x00000000002B0000-memory.dmp

Filesize
64KB

Download
memory/2796-34-0x0000000077E30000-0x0000000077F06000-memory.dmp

Filesize
856KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads