guloader | 3f89c7d72378f5fd330247aa261f097da0d1bfefd3d2e19c49aee42ae412f656

General

Target

SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
Size

940KB
MD5

ba614b66f0bde2fd7968180a6fe258b3
SHA1

027202eb8184749c031ab9afcc2c062bd83c80a8
SHA256

3f89c7d72378f5fd330247aa261f097da0d1bfefd3d2e19c49aee42ae412f656
SHA512

2652f6093ddc039c99ec12cfe1c0aee0f96efb1e89a4a05a88ad31ef201356c5777a84c61b2b4ff61bfd8bf94774f5b99c230d4da9fa04ca5ca2a7a4610c7c2d
SSDEEP

24576:8s2NlFWrzGtGbXSCMOKbFy4fWmVRpkVoJfCMoU8Z1A:glcrKSCvAAW8lCLU8ZC

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
29	3192	Process not Found

Loads dropped DLL 6 IoCs

pid	Process
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe

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

Web Service

T1102

flow	ioc
26	drive.google.com
27	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1472	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
1472	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.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
5076	1472	WerFault.exe	92

System Location Discovery: System Language Discovery 1 TTPs 3 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	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3856	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1472	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
1472	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 1472	3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe	92
PID 3036 wrote to memory of 1472	3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe	92
PID 3036 wrote to memory of 1472	3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe	92
PID 3036 wrote to memory of 1472	3036	SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe	92

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.SuspectCrc.28951.5999.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:1472
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1472 -s 1728
    3⤵
    - Program crash
    PID:5076

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIzIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4MTUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE1MzQzMTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MDA3NjU0NTg4Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1472 -ip 1472
1⤵
PID:3592

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\furriery.ini

Filesize
38B

MD5
b1ef763e50c5aabcdf24507256cdecb5

SHA1
544323e0812a2d71bc5e156e42bbe25f6082afab

SHA256
65724906ac58f577bd6b805237a1d03107bd94276121ef81e1fbfd368672abb4

SHA512
71c29b23cc8d2f16bb9f4667d25a7d01cf593134425359fc735c6056d154addb113dce0a9899f90d0dac4b3e46a3849fdee9190f3bf067fdba3b89f5b1170c67

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsdDA92.tmp\LangDLL.dll

Filesize
5KB

MD5
b21a3377e66b941df6d5b7cf8ba7a43a

SHA1
e7ed27fce2db9cdc11ca3c640806731dcef3864a

SHA256
ba46a03088f690ce966043f49761ff3a3a0dca236160794de841dfecc3588d1e

SHA512
f011a824c0ff7f87c6da112898f4afc87e12c5b39fb40ffcc0955012e79a4302597d892224b3b47e8143480605c73275d3799d6d2000cdf179c2912241f86916

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsdDA92.tmp\System.dll

Filesize
12KB

MD5
792b6f86e296d3904285b2bf67ccd7e0

SHA1
966b16f84697552747e0ddd19a4ba8ab5083af31

SHA256
c7a20bcaa0197aedddc8e4797bbb33fdf70d980f5e83c203d148121c2106d917

SHA512
97edc3410b88ca31abc0af0324258d2b59127047810947d0fb5e7e12957db34d206ffd70a0456add3a26b0546643ff0234124b08423c2c9ffe9bdec6eb210f2c

Download Submit
memory/1472-69-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1472-52-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1472-51-0x0000000001660000-0x0000000005D96000-memory.dmp

Filesize
71.2MB

Download
memory/1472-53-0x0000000077C98000-0x0000000077C99000-memory.dmp

Filesize
4KB

Download
memory/1472-54-0x0000000077CB5000-0x0000000077CB6000-memory.dmp

Filesize
4KB

Download
memory/1472-55-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1472-68-0x0000000077C11000-0x0000000077D31000-memory.dmp

Filesize
1.1MB

Download
memory/1472-70-0x0000000001660000-0x0000000005D96000-memory.dmp

Filesize
71.2MB

Download
memory/1472-71-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1472-72-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3036-50-0x0000000075115000-0x0000000075116000-memory.dmp

Filesize
4KB

Download
memory/3036-49-0x0000000077C11000-0x0000000077D31000-memory.dmp

Filesize
1.1MB

Download
memory/3036-48-0x0000000077C11000-0x0000000077D31000-memory.dmp

Filesize
1.1MB

Download

Analysis

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