guloader | 36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7

Analysis

max time kernel
93s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2024, 04:58

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General

Target
36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
Size 406KB
Sample240809-fl86msxaqr
SHA256 36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7
MD5 7374feae9dbf10a24102b2c3f9dab9be
SHA1 a095a19d9624d998bd0f4286da68196b7498607f
SHA512 e236782eadcec54ac1f9f10fcdcfd8eedbdd9404b9f82eea4e75b82505d7aeff21eb390ecd95b6880a9c2f3472d50b5ce2aa5e3bdefb602914d78755a36f5a9d
SSDEEP 6144:3qjIMMwjbAudZg8hqKHXffx2ABryLl45R2Do3xcRArpsIgii8MazvVhH:SwmbAqg8vHEABryhc2D8SAm8BvVhH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1976	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
1976	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3488 set thread context of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87

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
1808	1976	WerFault.exe	87

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	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1976	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
1976	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3488 wrote to memory of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87
PID 3488 wrote to memory of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87
PID 3488 wrote to memory of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87
PID 3488 wrote to memory of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87
PID 3488 wrote to memory of 1976	3488	36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe	87

C:\Users\Admin\AppData\Local\Temp\36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
"C:\Users\Admin\AppData\Local\Temp\36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3488
- C:\Users\Admin\AppData\Local\Temp\36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe
  "C:\Users\Admin\AppData\Local\Temp\36c2f4c0313fac3e054c832436887b376c4d5b19312a64b4d8751add5a32ead7.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1976
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 1768
    3⤵
    - Program crash
    PID:1808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1976 -ip 1976
1⤵
PID:1100

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

Parvifoliate.lnk

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\Parvifoliate.lnk
Size 655B
SHA256 9af48c7e493bec37ea059b0ea84d5d2d86544d54229f16fe3441d8bf43bbdcbf
MD5 ea0f112b5b6ab04990a58b80352f5043
SHA1 1260a8e12996de429b4d9c3532eb755b48e2442d
SHA512 dae32555aaac0b758195905f367f4ed92b5004180857967ce3ee70b600c7154e78d0169e6fd643eed48d0145d8f7534c61a144915962926f539453c8a5832569
MD5 SHA1 SHA512

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System.dll

Path C:\Users\Admin\AppData\Local\Temp\nswC891.tmp\System.dll
Size 11KB
SHA256 269d232712c86983336badb40b9e55e80052d8389ed095ebf9214964d43b6bb1
MD5 34442e1e0c2870341df55e1b7b3cccdc
SHA1 99b2fa21aead4b6ccd8ff2f6d3d3453a51d9c70c
SHA512 4a8c57fb12997438b488b862f3fc9dc0f236e07bb47b2bce6053dcb03ac7ad171842f02ac749f02dda4719c681d186330524cd2953d33cb50854844e74b33d51
SSDEEP 192:jPtkiQJr7V9r3HcU17S8g1w5xzWxy6j2V7i77blbTc4I:u7VpNo8gmOyRsVc4
MD5 SHA1 SHA512 SSDEEP

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memory/1976-295-0x00000000016D0000-0x0000000003E07000-memory.dmp

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memory/1976-300-0x0000000000470000-0x00000000016C4000-memory.dmp

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memory/1976-302-0x0000000000470000-0x00000000016C4000-memory.dmp

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memory/1976-303-0x0000000000470000-0x00000000016C4000-memory.dmp

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memory/1976-304-0x00000000016D0000-0x0000000003E07000-memory.dmp

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memory/3488-292-0x0000000004A30000-0x0000000007167000-memory.dmp

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memory/3488-293-0x0000000076F11000-0x0000000077031000-memory.dmp

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memory/3488-294-0x0000000073D74000-0x0000000073D75000-memory.dmp

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memory/3488-301-0x0000000004A30000-0x0000000007167000-memory.dmp

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