guloader | 0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81

General

Target

0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.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
3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

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

Web Service

T1102

flow	ioc
17	drive.google.com
18	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4860	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
4860	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3940 set thread context of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Pocherings.ini	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
File created	C:\Windows\porencephalitis.lnk	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
File opened for modification	C:\Windows\resources\0409\overkrop\nasosubnasal.ini	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
File opened for modification	C:\Windows\porencephalitis.lnk	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3600	4860	WerFault.exe	94

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	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4860	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
4860	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94
PID 3940 wrote to memory of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94
PID 3940 wrote to memory of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94
PID 3940 wrote to memory of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94
PID 3940 wrote to memory of 4860	3940	0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe	94

C:\Users\Admin\AppData\Local\Temp\0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
"C:\Users\Admin\AppData\Local\Temp\0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.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:3940
- C:\Users\Admin\AppData\Local\Temp\0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe
  "C:\Users\Admin\AppData\Local\Temp\0d9e0293185f77ef323b8686cabcd7e7562af2899bf565ccef257d4b259c7b81.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4860
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 1724
    3⤵
    - Program crash
    PID:3600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4860 -ip 4860
1⤵
PID:4472

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:\Users\Admin\AppData\Local\Temp\nsoA99F.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
C:\Windows\porencephalitis.lnk

Filesize
1006B

MD5
95f06e6d9d8f6c338133f8260fe94e90

SHA1
89db48fc8d70915c380e3386857506e5401cb568

SHA256
81dce06ebd7f44e906a1bc9f7b344bbd1bff1f9ad31dd20d3d3a57d2a74cb3ff

SHA512
3b685e1d697dbd89539a3f331644ba0cbc13b0976bd75314378be72952eaaf9322dab4541be04350ef3877b23970f7838656145a6677482258e20c9fcff811f2

Download Submit
memory/3940-294-0x00000000034E0000-0x0000000004C1D000-memory.dmp

Filesize
23.2MB

Download
memory/3940-295-0x00000000777A1000-0x00000000778C1000-memory.dmp

Filesize
1.1MB

Download
memory/3940-296-0x0000000074495000-0x0000000074496000-memory.dmp

Filesize
4KB

Download
memory/3940-298-0x00000000034E0000-0x0000000004C1D000-memory.dmp

Filesize
23.2MB

Download
memory/4860-300-0x0000000077828000-0x0000000077829000-memory.dmp

Filesize
4KB

Download
memory/4860-299-0x0000000001660000-0x0000000002D9D000-memory.dmp

Filesize
23.2MB

Download
memory/4860-297-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4860-301-0x0000000077845000-0x0000000077846000-memory.dmp

Filesize
4KB

Download
memory/4860-314-0x0000000001660000-0x0000000002D9D000-memory.dmp

Filesize
23.2MB

Download
memory/4860-315-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4860-316-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4860-317-0x00000000777A1000-0x00000000778C1000-memory.dmp

Filesize
1.1MB

Download
memory/4860-318-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4860-319-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/4860-320-0x0000000001660000-0x0000000002D9D000-memory.dmp

Filesize
23.2MB

Download

Analysis

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