guloader | bf64141d69992e8ea43fad5e54127333c0f0613b193c43db36035c8cffdeecde

General

Target

ARAH%20BME%20SDN%20BHD%20INV%20STATEMENT.zip
Size

634KB
MD5

c9936b02187f484ce22f89470f80cdeb
SHA1

8d97f4b6f142d623173ed6bbb02b27d6fdb60a7f
SHA256

bf64141d69992e8ea43fad5e54127333c0f0613b193c43db36035c8cffdeecde
SHA512

31292c430a3b495584ca52c8197e1c7d628c9f478d98eae46ea46a4d949a5ca3591492b82c8c10585d9cd6e10cb89758d83d5a17954084ab07ef9780867c5f44
SSDEEP

12288:eZauYlUlJ7BB+5XsWg0L1LWphIKJYg+1I//CzIrUOGlGGVqnPxniyiQLRXXm:iaJOlp+dHxL6IKZ/0yUOGlF8i+dnm

Score

10^/10

guloader discovery downloader persistence upx

Malware Config

Signatures

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

Blocklisted process makes network request 19 IoCs

flow	pid	Process
41	892	powershell.exe
42	892	powershell.exe
44	892	powershell.exe
47	892	powershell.exe
48	892	powershell.exe
49	892	powershell.exe
50	892	powershell.exe
51	892	powershell.exe
56	892	powershell.exe
57	892	powershell.exe
58	892	powershell.exe
59	892	powershell.exe
63	892	powershell.exe
64	892	powershell.exe
65	892	powershell.exe
66	892	powershell.exe
68	892	powershell.exe
69	892	powershell.exe
70	892	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2396	ARAH BME SDN BHD INV STATEMENT.exe

Loads dropped DLL 1 IoCs

pid	Process
2396	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Hente = "C:\\Users\\Admin\\AppData\\Roaming\\Satinwood\\Sportswomanly.exe"	powershell.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
892	powershell.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2396	ARAH BME SDN BHD INV STATEMENT.exe
892	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/892-30-0x0000000000400000-0x00000000005E4000-memory.dmp	upx

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: EnumeratesProcesses 2 IoCs

pid	Process
32	7zFM.exe
32	7zFM.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
32	7zFM.exe
892	powershell.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2396	ARAH BME SDN BHD INV STATEMENT.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	32	7zFM.exe
Token: 35	32	7zFM.exe
Token: SeSecurityPrivilege	32	7zFM.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
32	7zFM.exe
32	7zFM.exe
32	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
892	powershell.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 32 wrote to memory of 2396	32	7zFM.exe	102
PID 32 wrote to memory of 2396	32	7zFM.exe	102
PID 32 wrote to memory of 2396	32	7zFM.exe	102
PID 2396 wrote to memory of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105
PID 2396 wrote to memory of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105
PID 2396 wrote to memory of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105
PID 2396 wrote to memory of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105
PID 2396 wrote to memory of 892	2396	ARAH BME SDN BHD INV STATEMENT.exe	105

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\ARAH%20BME%20SDN%20BHD%20INV%20STATEMENT.zip"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:32
- C:\Users\Admin\AppData\Local\Temp\7zO020E2308\ARAH BME SDN BHD INV STATEMENT.exe
  "C:\Users\Admin\AppData\Local\Temp\7zO020E2308\ARAH BME SDN BHD INV STATEMENT.exe"
  2⤵
  - Executes dropped EXE
  - 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:2396
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Users\Admin\AppData\Local\Temp\7zO020E2308\ARAH BME SDN BHD INV STATEMENT.exe"
    3⤵
    - Blocklisted process makes network request
    - Adds Run key to start application
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:892

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\7zO020E2308\ARAH BME SDN BHD INV STATEMENT.exe

Filesize
658KB

MD5
031bc337fabe49aac9c372f16825354c

SHA1
7abb57546b33f2c3f91b2cc182186b0ed21b9544

SHA256
8450066748c90f306e28dee0fd262b9b1b8ed05ef40a8ee07b37bc6d0ce16764

SHA512
6fadb85a17597377a3a0c7c5ccb3d376412281be0ee166a0726fbf0ca18e2336002ca1adcb0822f360cda67661c5a6d5464e47aa1ebe3432ff8f5110bc5f13e7

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsl6CC1.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/892-30-0x0000000000400000-0x00000000005E4000-memory.dmp

Filesize
1.9MB

Download
memory/2396-23-0x0000000004B20000-0x00000000062EB000-memory.dmp

Filesize
23.8MB

Download
memory/2396-24-0x00000000744F5000-0x00000000744F6000-memory.dmp

Filesize
4KB

Download
memory/2396-25-0x0000000004B20000-0x00000000062EB000-memory.dmp

Filesize
23.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads