guloader | 6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4

Analysis

max time kernel
19s
max time network
24s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 02:58

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General

Target

6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe
Size

653KB
MD5

39ec842756e01eb17542974aae74c30a
SHA1

461e89517eba220c242065f60a7f11dc5e679765
SHA256

6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4
SHA512

fb9984954882e5c5d5f75a2e3cedacd9734bcfcd5eb5a4d5a3176e12f19cc1e142f8b3855f0710cce715919becb62bac0a25750eb7ebb571dead83d8b29b4f51
SSDEEP

12288:wop/kb5q37+1/GygOiDFG+Jud5EVsFPNYsxMkkSdWDdaX480BjCy:wou4/ygOYFG+qFYsxiSUdw1IjT

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Startup key = "C:\\Users\\Admin\\AppData\\Local\\Temp\\subfolder1\\Protura.exe"	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe
1144	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5048 set thread context of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Fonts\filmslide\windowful.lnk	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88
PID 5048 wrote to memory of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88
PID 5048 wrote to memory of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88
PID 5048 wrote to memory of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88
PID 5048 wrote to memory of 1144	5048	6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe	88

C:\Users\Admin\AppData\Local\Temp\6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe
"C:\Users\Admin\AppData\Local\Temp\6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\6529e196929b7761c5cd5034a5eb478d8665b7d537755acd2693ce734bec48d4.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:1144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsn4E8F.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/1144-21-0x0000000001C90000-0x000000000349C000-memory.dmp

Filesize
24.0MB

Download
memory/1144-23-0x00000000777D8000-0x00000000777D9000-memory.dmp

Filesize
4KB

Download
memory/1144-24-0x0000000077751000-0x0000000077871000-memory.dmp

Filesize
1.1MB

Download
memory/1144-33-0x0000000077751000-0x0000000077871000-memory.dmp

Filesize
1.1MB

Download
memory/1144-34-0x0000000001C90000-0x000000000349C000-memory.dmp

Filesize
24.0MB

Download
memory/1144-35-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/1144-36-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/5048-18-0x0000000005980000-0x000000000718C000-memory.dmp

Filesize
24.0MB

Download
memory/5048-19-0x0000000077751000-0x0000000077871000-memory.dmp

Filesize
1.1MB

Download
memory/5048-20-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/5048-22-0x0000000005980000-0x000000000718C000-memory.dmp

Filesize
24.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads