guloader | 790f423f015c7a47de1d62c5fa4148c8b491209b22a272cfff42b8cd7e61e0ee

Analysis

max time kernel
130s
max time network
203s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/10/2024, 16:42

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General

Target

outrap.exe
Size

535KB
MD5

89d011504235c0cc1b7877896e3bb44a
SHA1

33338ad41cfa61c6ba9459e1eb0bcf6a4a9dafad
SHA256

098669c0fc8d2b3e9cae033e8bd927ff051bf128240bd6d5dce6e7c02ffda5ce
SHA512

9bff43aeaebe9210f9419dcd0851d73d09ab5d509b1bb63cb2964eba107c89c6582332ed3ef61b3a84913ba7cfe2932d7324cbf4f91d268845d3ff112a5ea0ae
SSDEEP

12288:DMhuj/MHzCBAFfCw6Y2Tp0xLz/linh0s+ZHmkHN3HiPCpfBVx:IW0HzCBsCVG/le0HnHpHiwV

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
4168	outrap.exe
4168	outrap.exe

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

Web Service

T1102

flow	ioc
28	drive.google.com
29	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1340	outrap.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4168	outrap.exe
1340	outrap.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4168 set thread context of 1340	4168	outrap.exe	97

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Trnregimenternes\totalsanerende.Obs202	outrap.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	outrap.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outrap.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe
1340	outrap.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4168	outrap.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4168 wrote to memory of 1340	4168	outrap.exe	97
PID 4168 wrote to memory of 1340	4168	outrap.exe	97
PID 4168 wrote to memory of 1340	4168	outrap.exe	97
PID 4168 wrote to memory of 1340	4168	outrap.exe	97
PID 4168 wrote to memory of 1340	4168	outrap.exe	97

C:\Users\Admin\AppData\Local\Temp\outrap.exe
"C:\Users\Admin\AppData\Local\Temp\outrap.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:4168
- C:\Users\Admin\AppData\Local\Temp\outrap.exe
  "C:\Users\Admin\AppData\Local\Temp\outrap.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsp78EA.tmp\System.dll

Filesize
11KB

MD5
cf85183b87314359488b850f9e97a698

SHA1
6b6c790037eec7ebea4d05590359cb4473f19aea

SHA256
3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

SHA512
fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

Download Submit
C:\Users\Admin\Music\incinerations.lnk

Filesize
798B

MD5
dbe6662c5c0836c31d370d8e00205b4f

SHA1
e9fd850a470c54041afcfa400c731cb6621dab32

SHA256
ad828e50f5cc99cd445970176d51b18aef19558534e444162af89046c8919c20

SHA512
36bbdcde78e509c69a3608f609930ae73709c73d295e6c658228c6613aec80c5a52c82a2dedff0310449e43704c6164eca8dbab7f11b95b8db33f7a893db8bf2

Download Submit
memory/1340-448-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1340-431-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1340-433-0x0000000001660000-0x0000000003756000-memory.dmp

Filesize
33.0MB

Download
memory/1340-446-0x0000000001660000-0x0000000003756000-memory.dmp

Filesize
33.0MB

Download
memory/1340-447-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1340-449-0x0000000077071000-0x0000000077191000-memory.dmp

Filesize
1.1MB

Download
memory/1340-450-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1340-453-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1340-454-0x0000000001660000-0x0000000003756000-memory.dmp

Filesize
33.0MB

Download
memory/4168-430-0x0000000077071000-0x0000000077191000-memory.dmp

Filesize
1.1MB

Download
memory/4168-432-0x00000000035E0000-0x00000000056D6000-memory.dmp

Filesize
33.0MB

Download
memory/4168-429-0x00000000035E0000-0x00000000056D6000-memory.dmp

Filesize
33.0MB

Download