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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	filename1.exe

Loads dropped DLL 1 IoCs

pid	Process
3088	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-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.vbs"	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\subfolder1\\filename1.vbs"	filename1.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
4012	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2052	filename1.exe
3088	filename1.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 932 set thread context of 4012	932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	85
PID 2052 set thread context of 3088	2052	filename1.exe	87

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
932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2052	filename1.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
2052	filename1.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 932 wrote to memory of 4012	932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	85
PID 932 wrote to memory of 4012	932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	85
PID 932 wrote to memory of 4012	932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	85
PID 932 wrote to memory of 4012	932	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	85
PID 4012 wrote to memory of 2052	4012	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	86
PID 4012 wrote to memory of 2052	4012	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	86
PID 4012 wrote to memory of 2052	4012	03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe	86
PID 2052 wrote to memory of 3088	2052	filename1.exe	87
PID 2052 wrote to memory of 3088	2052	filename1.exe	87
PID 2052 wrote to memory of 3088	2052	filename1.exe	87
PID 2052 wrote to memory of 3088	2052	filename1.exe	87

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:932
- C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\03f891aeb8fd33cd03997d9bcc61d226_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of WriteProcessMemory
  PID:4012
- - 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:2052
  - - C:\Users\Admin\subfolder1\filename1.exe
      "C:\Users\Admin\subfolder1\filename1.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:3088

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\subfolder1\filename1.exe

Filesize
96KB

MD5
03f891aeb8fd33cd03997d9bcc61d226

SHA1
bb12d2d8bc7d3e049cdcda106a14090ee040402f

SHA256
04fd4bdd959ef2dbc5b2cfa6bbd3c43ab6efe17f8b7b207674609632366ecaa3

SHA512
86a7d98adc152b936dde1ccf424b006037761a9759d37156bdf9f2e84c8187f8ea06696b2863f812b2c08b4ca9c16af05a3eecf1b23a336056c25d8a23e55cbb

Download Submit
memory/932-2-0x00000000020F0000-0x0000000002100000-memory.dmp

Filesize
64KB

Download
memory/932-5-0x0000000077961000-0x0000000077A81000-memory.dmp

Filesize
1.1MB

Download
memory/932-7-0x00000000020F0000-0x0000000002100000-memory.dmp

Filesize
64KB

Download
memory/2052-23-0x0000000002110000-0x0000000002120000-memory.dmp

Filesize
64KB

Download
memory/2052-27-0x0000000002110000-0x0000000002120000-memory.dmp

Filesize
64KB

Download
memory/3088-28-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/4012-4-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/4012-6-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/4012-9-0x0000000077961000-0x0000000077A81000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads