guloader | 8450066748c90f306e28dee0fd262b9b1b8ed05ef40a8ee07b37bc6d0ce16764

General

Target

ARAH BME SDN BHD INV STATEMENT.exe
Size

658KB
MD5

031bc337fabe49aac9c372f16825354c
SHA1

7abb57546b33f2c3f91b2cc182186b0ed21b9544
SHA256

8450066748c90f306e28dee0fd262b9b1b8ed05ef40a8ee07b37bc6d0ce16764
SHA512

6fadb85a17597377a3a0c7c5ccb3d376412281be0ee166a0726fbf0ca18e2336002ca1adcb0822f360cda67661c5a6d5464e47aa1ebe3432ff8f5110bc5f13e7
SSDEEP

12288:wYBmXiWKdcnBhdTjjnVc6TYIg742KaB4X+IOylpnSw:wYMyDeVfBcRIg74a48yh

Score

10^/10

guloader discovery downloader persistence

Malware Config

Signatures

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

Blocklisted process makes network request 4 IoCs

flow	pid	Process
4	2772	powershell.exe
7	2772	powershell.exe
8	2772	powershell.exe
9	2772	powershell.exe

Loads dropped DLL 1 IoCs

pid	Process
3036	ARAH BME SDN BHD INV STATEMENT.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Hente = "C:\\Users\\Admin\\AppData\\Roaming\\Satinwood\\Sportswomanly.exe"	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3036	ARAH BME SDN BHD INV STATEMENT.exe
2772	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3036 set thread context of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Rolff18\Eventyrligt135.ini	ARAH BME SDN BHD INV STATEMENT.exe

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

System Information Discovery
T1082

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	ARAH BME SDN BHD INV STATEMENT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3036	ARAH BME SDN BHD INV STATEMENT.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30
PID 3036 wrote to memory of 2772	3036	ARAH BME SDN BHD INV STATEMENT.exe	30

C:\Users\Admin\AppData\Local\Temp\ARAH BME SDN BHD INV STATEMENT.exe
"C:\Users\Admin\AppData\Local\Temp\ARAH BME SDN BHD INV STATEMENT.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Users\Admin\AppData\Local\Temp\ARAH BME SDN BHD INV STATEMENT.exe"
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabAF06.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarAF28.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\Users\Admin\AppData\Local\Temp\nsd84CB.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/2772-14-0x0000000077840000-0x00000000779E9000-memory.dmp

Filesize
1.7MB

Download
memory/2772-69-0x0000000000400000-0x0000000000581000-memory.dmp

Filesize
1.5MB

Download
memory/3036-11-0x0000000003EF0000-0x00000000056BB000-memory.dmp

Filesize
23.8MB

Download
memory/3036-12-0x0000000077841000-0x0000000077942000-memory.dmp

Filesize
1.0MB

Download
memory/3036-13-0x0000000077840000-0x00000000779E9000-memory.dmp

Filesize
1.7MB

Download
memory/3036-15-0x0000000003EF0000-0x00000000056BB000-memory.dmp

Filesize
23.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads