guloader | a3f1fc2633fca0debd0bcc084692cd387ae18a6c89dc65cd4575712604f754c0

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/03/2025, 23:04

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General

Target

1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
Size

60KB
MD5

ffb001f4c074a6fe90d5dc3b6fd41cc4
SHA1

454bbfdfeccc5d3c4e7dc1825652d28baf4b3979
SHA256

1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346
SHA512

dc6b9d74380eb48ff840616194966470a5c621b3591f3c298986977b3cd2dfa118d0bf6c96e7ebf3c74f836938eb90b0e684bbcfadd907c357b33f9176bdaab4
SSDEEP

384:3TlcjrzwmhJdHaYGsb5PITPQlG4G4czruJjDPs6pvCYHP1HA3cF:343wOEowTPP14hjNpd1HA3c

Score

10^/10

guloader discovery downloader

Malware Config

Extracted

Family

guloader

http://akaliresources.com/test_fEayB239.bin

https://od.lk/s/NzhfMjExNTY2NzZf/test_fEayB239.bin

xor.base64

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
2788	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2192 set thread context of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31

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	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31
PID 2192 wrote to memory of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31
PID 2192 wrote to memory of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31
PID 2192 wrote to memory of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31
PID 2192 wrote to memory of 2788	2192	1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe	31

C:\Users\Admin\AppData\Local\Temp\1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
"C:\Users\Admin\AppData\Local\Temp\1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Users\Admin\AppData\Local\Temp\1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe
  "C:\Users\Admin\AppData\Local\Temp\1e6b0b8ccd020dbe46b92b0db77c1562820ea85e3a1cd7d43710ff88473f9346.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

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

memory/2192-2-0x0000000000310000-0x000000000031E000-memory.dmp

Filesize
56KB

Download
memory/2192-3-0x00000000771C1000-0x00000000772C2000-memory.dmp

Filesize
1.0MB

Download
memory/2192-4-0x00000000771C0000-0x0000000077369000-memory.dmp

Filesize
1.7MB

Download
memory/2192-5-0x0000000000310000-0x000000000031E000-memory.dmp

Filesize
56KB

Download
memory/2788-6-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2788-8-0x00000000771C0000-0x0000000077369000-memory.dmp

Filesize
1.7MB

Download
memory/2788-9-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download