guloader | 2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6

General

Target

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
Size

894KB
MD5

aa160f24e5670e39abcc8a33c6f51f2f
SHA1

eb8f77c8f6c5699614e304d8e7f8a3950ba41a4a
SHA256

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6
SHA512

8261633df47cad2dab42508a8f1c9d421b0b0c91d62a8b08bf3787c19b7116f3f091791800983bcd9d75d92b0097c08c670a38963ef4effd04e70ffc4cb9565e
SSDEEP

24576:2x+rcb2ZkoncoAzPLqt62HnQIQMOKOaeKf:2x+4b2SoncFzPLH2HTzOKOwf

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:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid	process
4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

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

Web Service
T1102

Processes:

flow ioc

26 drive.google.com
27 drive.google.com
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid process

440 2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

flow	ioc
26	drive.google.com
27	drive.google.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid	process
4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
440	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

description	pid	process	target process
PID 4176 set thread context of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Drops file in Program Files directory 1 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Common Files\Reoil.mul	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Drops file in Windows directory 6 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

description	ioc	process
File opened for modification	C:\Windows\Fonts\karrooers.ini	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
File opened for modification	C:\Windows\Fonts\brunsttiderne.tri	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
File opened for modification	C:\Windows\Fonts\Spodium39.int	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
File opened for modification	C:\Windows\Belringernes\Dermatophony.ini	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
File opened for modification	C:\Windows\resources\nringsmiddelet.ini	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
File opened for modification	C:\Windows\resources\stenhjsplanternes\fordreves.ini	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.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 440 WerFault.exe 2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid	pid_target	process	target process
1572	440	WerFault.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.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:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid	process
440	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
440	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

pid process

4176 2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

description	pid	process	target process
PID 4176 wrote to memory of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
PID 4176 wrote to memory of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
PID 4176 wrote to memory of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
PID 4176 wrote to memory of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
PID 4176 wrote to memory of 440	4176	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe	2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe

C:\Users\Admin\AppData\Local\Temp\2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
"C:\Users\Admin\AppData\Local\Temp\2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.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:4176

C:\Users\Admin\AppData\Local\Temp\2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe
"C:\Users\Admin\AppData\Local\Temp\2fba62d26b23162edc673374335d575688b00d1467d936618793d28ec3729ad6.exe"
2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 1060
3⤵
- Program crash
PID:1572

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 440 -ip 440
1⤵
PID:3016

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsbA2E8.tmp\System.dll

Filesize
11KB

MD5
c9473cb90d79a374b2ba6040ca16e45c

SHA1
ab95b54f12796dce57210d65f05124a6ed81234a

SHA256
b80a5cba69d1853ed5979b0ca0352437bf368a5cfb86cb4528edadd410e11352

SHA512
eafe7d5894622bc21f663bca4dd594392ee0f5b29270b6b56b0187093d6a3a103545464ff6398ad32d2cf15dab79b1f133218ba9ba337ddc01330b5ada804d7b

Download Submit
memory/440-38-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/440-23-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/440-25-0x0000000001660000-0x0000000003E83000-memory.dmp

Filesize
40.1MB

Download
memory/440-39-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/440-40-0x0000000001660000-0x0000000003E83000-memory.dmp

Filesize
40.1MB

Download
memory/440-41-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/440-42-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4176-19-0x00000000031A0000-0x00000000059C3000-memory.dmp

Filesize
40.1MB

Download
memory/4176-20-0x00000000776F1000-0x0000000077811000-memory.dmp

Filesize
1.1MB

Download
memory/4176-21-0x00000000776F1000-0x0000000077811000-memory.dmp

Filesize
1.1MB

Download
memory/4176-22-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/4176-24-0x00000000031A0000-0x00000000059C3000-memory.dmp

Filesize
40.1MB

Download
memory/4176-18-0x00000000031A0000-0x00000000059C3000-memory.dmp

Filesize
40.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads