guloader | 0d73ed2420afde35f1e9687c44c5fe9531be28e6c2fad944dc416014012dfd9e

Analysis

max time kernel
293s
max time network
293s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 16:17

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General

Target

526231515215api2535forms.exe
Size

1002KB
MD5

eda4d61a350236937e265ed2c2e2e666
SHA1

382707fd6300a57d955da0c5333f41eb12d67073
SHA256

2eade1e13548c453abaf7f320aa91034d849c2adbba8ddced41fccb27d8cde1c
SHA512

941a99ce65f667f8588e9c9ed2116567b08db2b9c64927e1cf13579b4ac14f19eae40c350df0f46a43a372946ac6bb3a6841873f37a8909bac73caafc42e3658
SSDEEP

24576:QN5CyziiwG6B/8ZKDCOQhoRg8mhUsiNj+AoxCUYMN+QQLZ:w5CAi3G6B/8EXRgriIAoLNZQ1

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 1 IoCs

pid	Process
2444	526231515215api2535forms.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2444	526231515215api2535forms.exe
2848	526231515215api2535forms.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	526231515215api2535forms.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	526231515215api2535forms.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2444	526231515215api2535forms.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 2848	2444	526231515215api2535forms.exe	31
PID 2444 wrote to memory of 2848	2444	526231515215api2535forms.exe	31
PID 2444 wrote to memory of 2848	2444	526231515215api2535forms.exe	31
PID 2444 wrote to memory of 2848	2444	526231515215api2535forms.exe	31
PID 2444 wrote to memory of 2848	2444	526231515215api2535forms.exe	31

C:\Users\Admin\AppData\Local\Temp\526231515215api2535forms.exe
"C:\Users\Admin\AppData\Local\Temp\526231515215api2535forms.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Users\Admin\AppData\Local\Temp\526231515215api2535forms.exe
  "C:\Users\Admin\AppData\Local\Temp\526231515215api2535forms.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2848

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

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Cryptoheretic\Forlange.exe

Filesize
1002KB

MD5
eda4d61a350236937e265ed2c2e2e666

SHA1
382707fd6300a57d955da0c5333f41eb12d67073

SHA256
2eade1e13548c453abaf7f320aa91034d849c2adbba8ddced41fccb27d8cde1c

SHA512
941a99ce65f667f8588e9c9ed2116567b08db2b9c64927e1cf13579b4ac14f19eae40c350df0f46a43a372946ac6bb3a6841873f37a8909bac73caafc42e3658

Download Submit
\Users\Admin\AppData\Local\Temp\nsyC4F5.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/2444-26-0x00000000777F1000-0x00000000778F2000-memory.dmp

Filesize
1.0MB

Download
memory/2444-27-0x00000000777F0000-0x0000000077999000-memory.dmp

Filesize
1.7MB

Download
memory/2848-28-0x0000000001510000-0x00000000052B3000-memory.dmp

Filesize
61.6MB

Download
memory/2848-29-0x00000000777F0000-0x0000000077999000-memory.dmp

Filesize
1.7MB

Download
memory/2848-32-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download