guloader | d564eb94afb174fe3b854de086eda2a4e015d778a9aea9806e79f82044eac74e

General

Target

Assistentuddannelserne.exe
Size

652KB
MD5

5edee175c5003771dea841893ea46602
SHA1

14b96459dff641245aea6dacd34512830d945ee2
SHA256

d564eb94afb174fe3b854de086eda2a4e015d778a9aea9806e79f82044eac74e
SHA512

f16f409fa299352007cc5a78950590542c6d846263f5c25b0d80ac32f3b7f92fae2deafb360d1ee6adb73fbbfcc9f0341f730703febf1c0a7013ff4bef7cfb81
SSDEEP

12288:8bzbPZYc4aWV/8RxQM6ybpC2ZQt57tEwV3cyiqr7pDggHIMjbTJ+c:8bzbKc4NUP/dpC2ZQbJ53/XNr

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

Assistentuddannelserne.exe

pid process

2848 Assistentuddannelserne.exe
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

Assistentuddannelserne.exe

pid process

2884 Assistentuddannelserne.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Assistentuddannelserne.exeAssistentuddannelserne.exe

pid process

2848 Assistentuddannelserne.exe
2884 Assistentuddannelserne.exe

pid	process
2848	Assistentuddannelserne.exe

pid	process
2848	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Assistentuddannelserne.exeAssistentuddannelserne.exeSearchIndexer.exe

description	pid	process	target process
PID 2848 set thread context of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2884 set thread context of 1380	2884	Assistentuddannelserne.exe	Explorer.EXE
PID 2884 set thread context of 2804	2884	Assistentuddannelserne.exe	SearchIndexer.exe
PID 2804 set thread context of 1380	2804	SearchIndexer.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

Assistentuddannelserne.exe

description ioc process

File opened for modification C:\Program Files (x86)\egnethedernes\hals.ini Assistentuddannelserne.exe
Drops file in Windows directory 1 IoCs

Processes:

Assistentuddannelserne.exe

description ioc process

File opened for modification C:\Windows\resources\0409\binbashi.ini Assistentuddannelserne.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\egnethedernes\hals.ini	Assistentuddannelserne.exe

description	ioc	process
File opened for modification	C:\Windows\resources\0409\binbashi.ini	Assistentuddannelserne.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

Assistentuddannelserne.exeSearchIndexer.exe

pid	process
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe
2804	SearchIndexer.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Assistentuddannelserne.exeAssistentuddannelserne.exeExplorer.EXESearchIndexer.exe

pid process

2848 Assistentuddannelserne.exe
2884 Assistentuddannelserne.exe
1380 Explorer.EXE
1380 Explorer.EXE
2804 SearchIndexer.exe
2804 SearchIndexer.exe

pid	process
2848	Assistentuddannelserne.exe
2884	Assistentuddannelserne.exe
1380	Explorer.EXE
1380	Explorer.EXE
2804	SearchIndexer.exe
2804	SearchIndexer.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Assistentuddannelserne.exeExplorer.EXE

description	pid	process	target process
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 2848 wrote to memory of 2884	2848	Assistentuddannelserne.exe	Assistentuddannelserne.exe
PID 1380 wrote to memory of 2804	1380	Explorer.EXE	SearchIndexer.exe
PID 1380 wrote to memory of 2804	1380	Explorer.EXE	SearchIndexer.exe
PID 1380 wrote to memory of 2804	1380	Explorer.EXE	SearchIndexer.exe
PID 1380 wrote to memory of 2804	1380	Explorer.EXE	SearchIndexer.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1380

C:\Users\Admin\AppData\Local\Temp\Assistentuddannelserne.exe
"C:\Users\Admin\AppData\Local\Temp\Assistentuddannelserne.exe"
2⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2848

C:\Users\Admin\AppData\Local\Temp\Assistentuddannelserne.exe
"C:\Users\Admin\AppData\Local\Temp\Assistentuddannelserne.exe"
3⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2884

C:\Windows\SysWOW64\SearchIndexer.exe
"C:\Windows\SysWOW64\SearchIndexer.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsoCFD.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/1380-44-0x0000000003140000-0x0000000003240000-memory.dmp

Filesize
1024KB

Download
memory/2804-48-0x0000000000080000-0x00000000000BF000-memory.dmp

Filesize
252KB

Download
memory/2804-45-0x0000000000080000-0x00000000000BF000-memory.dmp

Filesize
252KB

Download
memory/2848-27-0x0000000003800000-0x0000000005622000-memory.dmp

Filesize
30.1MB

Download
memory/2848-28-0x00000000775A1000-0x00000000776A2000-memory.dmp

Filesize
1.0MB

Download
memory/2848-29-0x00000000775A0000-0x0000000077749000-memory.dmp

Filesize
1.7MB

Download
memory/2848-33-0x0000000003800000-0x0000000005622000-memory.dmp

Filesize
30.1MB

Download
memory/2884-34-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-35-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-36-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-37-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-38-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-32-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-31-0x00000000775A0000-0x0000000077749000-memory.dmp

Filesize
1.7MB

Download
memory/2884-47-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2884-30-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads