guloader | 0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f

General

Target

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
Size

895KB
MD5

b6bcb5405a50ef97d57ae2b43ad5d01e
SHA1

2c8288be420bdb1b53438f07cbcdec259f47bd0d
SHA256

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f
SHA512

1a0eeea2ce4608fc4e0ae67b94f6c137de873b5c0da735c22a2e295dd9577aa1f6ba85ecd0193d771289d417a1d9cc758ea5cf8284cf3f2e3272571414cc9391
SSDEEP

24576:5x+rg0PyXjILtPkoAzuyn/pBF62HnQIQMOKOaeKg:5x+s0PyXjIxPkFzucp22HTzOKOwg

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid	process
2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

4 drive.google.com
5 drive.google.com
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid process

2060 0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

flow	ioc
4	drive.google.com
5	drive.google.com

pid	process
2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid	process
2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

description	pid	process	target process
PID 2100 set thread context of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Drops file in Program Files directory 1 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\Reoil.mul	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Drops file in Windows directory 6 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\Spodium39.int	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
File opened for modification	C:\Windows\Belringernes\Dermatophony.ini	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
File opened for modification	C:\Windows\resources\nringsmiddelet.ini	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
File opened for modification	C:\Windows\resources\stenhjsplanternes\fordreves.ini	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
File opened for modification	C:\Windows\Fonts\karrooers.ini	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
File opened for modification	C:\Windows\Fonts\brunsttiderne.tri	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1572 2060 WerFault.exe 0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid	pid_target	process	target process
1572	2060	WerFault.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

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

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid process

2060 0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid process

2100 0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

pid	process
2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe

description	pid	process	target process
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2100 wrote to memory of 2060	2100	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
PID 2060 wrote to memory of 1572	2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	WerFault.exe
PID 2060 wrote to memory of 1572	2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	WerFault.exe
PID 2060 wrote to memory of 1572	2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	WerFault.exe
PID 2060 wrote to memory of 1572	2060	0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
"C:\Users\Admin\AppData\Local\Temp\0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2100

C:\Users\Admin\AppData\Local\Temp\0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe
"C:\Users\Admin\AppData\Local\Temp\0c3b34493099cbbfbf51b25a4befe93e8d1b92008884500f91c66e2bd00dee1f.exe"
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 68
3⤵
- Program crash
PID:1572

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsoACA5.tmp\System.dll

Filesize
11KB

MD5
c9473cb90d79a374b2ba6040ca16e45c

SHA1
ab95b54f12796dce57210d65f05124a6ed81234a

SHA256
b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352

SHA512
eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b

Download Submit
memory/2060-47-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2060-25-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2060-26-0x0000000077590000-0x0000000077739000-memory.dmp

Filesize
1.7MB

Download
memory/2060-46-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2060-50-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2060-49-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2060-51-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2100-21-0x0000000003510000-0x0000000006298000-memory.dmp

Filesize
45.5MB

Download
memory/2100-23-0x0000000077590000-0x0000000077739000-memory.dmp

Filesize
1.7MB

Download
memory/2100-22-0x0000000077591000-0x0000000077692000-memory.dmp

Filesize
1.0MB

Download
memory/2100-24-0x0000000003510000-0x0000000006298000-memory.dmp

Filesize
45.5MB

Download
memory/2100-20-0x0000000003510000-0x0000000006298000-memory.dmp

Filesize
45.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads