guloader | 0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81

General

Target

P52mX04112024145925383.exe
Size

626KB
MD5

21a40091e05d06c9480da0fb7a8add87
SHA1

186ae82d5cdb969c28e8111af7ea638d98bfdc69
SHA256

0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81
SHA512

e11417ff36d3dfe3c92ba560ca3bd0d75e71b005b38f54ba6e775cfecd9b1f41bbe34544b359967f8a13d96f1b93f6c2d36467ed0cc161fad6d6760c4a886f47
SSDEEP

12288:qic8iBU0BzGGCyDEWqNF2V0/gQashpX7IBy9VoF15NO7nxZ6GLKaDP:qic8GU0AGaO0/gQashpMy9VUgjf6G2a

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
1884	P52mX04112024145925383.exe

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

Web Service

T1102

flow	ioc
3	drive.google.com
5	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2736	P52mX04112024145925383.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1884	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1884 set thread context of 2736	1884	P52mX04112024145925383.exe	31

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Pocherings.ini	P52mX04112024145925383.exe
File created	C:\Windows\porencephalitis.lnk	P52mX04112024145925383.exe
File opened for modification	C:\Windows\resources\0409\overkrop\nasosubnasal.ini	P52mX04112024145925383.exe
File opened for modification	C:\Windows\porencephalitis.lnk	P52mX04112024145925383.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	P52mX04112024145925383.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	P52mX04112024145925383.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe
2736	P52mX04112024145925383.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1884	P52mX04112024145925383.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31
PID 1884 wrote to memory of 2736	1884	P52mX04112024145925383.exe	31

C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe
"C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.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:1884
- C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe
  "C:\Users\Admin\AppData\Local\Temp\P52mX04112024145925383.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2736

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

C:\Windows\porencephalitis.lnk

Filesize
986B

MD5
9e5fc73fb1e9d0992bc8a8705cb8a1d2

SHA1
99d69957cd818b2185efc5d027d450394d3cc612

SHA256
59b48818f39b8cb6019de25b071a85d9a0a05626fc36bcc448cbb0e355b61ca2

SHA512
faa578be4969a7fde5bc38df48da5bde2aae7369d29dd562f7b7df7a885eff82474eb85b32cc23b14595acb411ff563607ffbd34c220996eec512db95b1034f5

Download Submit
\Users\Admin\AppData\Local\Temp\nst362E.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
memory/1884-299-0x00000000042E0000-0x0000000005A1D000-memory.dmp

Filesize
23.2MB

Download
memory/1884-297-0x0000000077010000-0x00000000771B9000-memory.dmp

Filesize
1.7MB

Download
memory/1884-296-0x0000000077011000-0x0000000077112000-memory.dmp

Filesize
1.0MB

Download
memory/1884-295-0x00000000042E0000-0x0000000005A1D000-memory.dmp

Filesize
23.2MB

Download
memory/2736-300-0x0000000077010000-0x00000000771B9000-memory.dmp

Filesize
1.7MB

Download
memory/2736-298-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-322-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-323-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-324-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-326-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-325-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-327-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2736-333-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

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