guloader | 823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a

General

Target

HSBC COPY.PDF.exe
Size

368KB
MD5

268487b76a5c0ff4ef16f16adcfd8b57
SHA1

73ab922037d9af5f27b865ef9d660006a286bcb8
SHA256

823a91ee5e3c84edd18c3e4df9321dd649e2ea5ffb79d5b91b26253a37f7c25a
SHA512

ef20ac2732ab96f68f1a7431efefa2f24cc3c813002d9cfeddded96d6371a229ba3a4164c950a15db5df1b93b1d7ce335eaa4969d033feef4591b752c242c917
SSDEEP

6144:jp+ggOIV4ALiGvn5W8ILY3dmex6OdjLBsM5qPVUH5i:FdY4AJBWs3dmex7dxBqyHM

Score

10^/10

guloader remcos remotehost collection downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

93.95.115.2:9462

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-VI6D4O
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

NirSoft MailPassView 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/2588-40-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2588-35-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2588-55-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/2564-39-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2564-34-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2564-51-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1996-38-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1996-42-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1996-43-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2588-40-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2564-39-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2588-35-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2564-34-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2564-51-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2588-55-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Loads dropped DLL 1 IoCs

Processes:

HSBC COPY.PDF.exe

pid process

2240 HSBC COPY.PDF.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
2240	HSBC COPY.PDF.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

HSBC COPY.PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	HSBC COPY.PDF.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

HSBC COPY.PDF.exe

pid process

2388 HSBC COPY.PDF.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

HSBC COPY.PDF.exeHSBC COPY.PDF.exe

pid process

2240 HSBC COPY.PDF.exe
2388 HSBC COPY.PDF.exe

pid	process
2388	HSBC COPY.PDF.exe

pid	process
2240	HSBC COPY.PDF.exe
2388	HSBC COPY.PDF.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

HSBC COPY.PDF.exeHSBC COPY.PDF.exe

description	pid	process	target process
PID 2240 set thread context of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 set thread context of 2564	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 set thread context of 2588	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 set thread context of 1996	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe

Drops file in Windows directory 1 IoCs

Processes:

HSBC COPY.PDF.exe

description ioc process

File opened for modification C:\Windows\forsrgelsens.cur HSBC COPY.PDF.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

HSBC COPY.PDF.exe

pid process

2564 HSBC COPY.PDF.exe
2564 HSBC COPY.PDF.exe
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

HSBC COPY.PDF.exeHSBC COPY.PDF.exe

pid process

2240 HSBC COPY.PDF.exe
2388 HSBC COPY.PDF.exe
2388 HSBC COPY.PDF.exe
2388 HSBC COPY.PDF.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HSBC COPY.PDF.exe

description pid process

Token: SeDebugPrivilege 1996 HSBC COPY.PDF.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

HSBC COPY.PDF.exe

pid process

2388 HSBC COPY.PDF.exe

description	ioc	process
File opened for modification	C:\Windows\forsrgelsens.cur	HSBC COPY.PDF.exe

pid	process
2564	HSBC COPY.PDF.exe
2564	HSBC COPY.PDF.exe

pid	process
2240	HSBC COPY.PDF.exe
2388	HSBC COPY.PDF.exe
2388	HSBC COPY.PDF.exe
2388	HSBC COPY.PDF.exe

description	pid	process
Token: SeDebugPrivilege	1996	HSBC COPY.PDF.exe

pid	process
2388	HSBC COPY.PDF.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

HSBC COPY.PDF.exeHSBC COPY.PDF.exe

description	pid	process	target process
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2240 wrote to memory of 2388	2240	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2564	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2564	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2564	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2564	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2588	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2588	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2588	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 2588	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 1996	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 1996	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 1996	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe
PID 2388 wrote to memory of 1996	2388	HSBC COPY.PDF.exe	HSBC COPY.PDF.exe

C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe
"C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\sysptpifxsxrinlenhzcxgrnyhepc"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2564
- - C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\dbfamisytapesbzixrmeitlegowqdcsn"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:2588
- - C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\nvkt"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
67cbfa490c430e20e53840183659a5d0

SHA1
bbe621d3a95ba4ce0a02c468ca6b13420cce8574

SHA256
ff3cb092c646864b36648c8b52cc1d035d06679c11cf567b6cfe33c787992836

SHA512
898c717b7b50512981c4c0c10900adb85b2f93a949c1e894b26f7818e89014766497aa17c47c4a594489825d6aae739f0dcc50f073db65f275790f0c532f0449

Download Submit
C:\Users\Admin\AppData\Local\Temp\sysptpifxsxrinlenhzcxgrnyhepc

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nst9021.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/1996-36-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1996-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1996-42-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1996-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1996-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2240-26-0x00000000039A0000-0x00000000046A9000-memory.dmp

Filesize
13.0MB

Download
memory/2240-17-0x00000000039A0000-0x00000000046A9000-memory.dmp

Filesize
13.0MB

Download
memory/2240-16-0x0000000077B31000-0x0000000077C32000-memory.dmp

Filesize
1.0MB

Download
memory/2240-15-0x00000000039A0000-0x00000000046A9000-memory.dmp

Filesize
13.0MB

Download
memory/2240-18-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/2388-75-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-69-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-78-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-25-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-61-0x00000000331A0000-0x00000000331B9000-memory.dmp

Filesize
100KB

Download
memory/2388-81-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-72-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-19-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/2388-66-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-20-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-63-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-57-0x00000000331A0000-0x00000000331B9000-memory.dmp

Filesize
100KB

Download
memory/2388-21-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-53-0x0000000000480000-0x00000000014E2000-memory.dmp

Filesize
16.4MB

Download
memory/2388-60-0x00000000331A0000-0x00000000331B9000-memory.dmp

Filesize
100KB

Download
memory/2564-39-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2564-51-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2564-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2564-32-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2564-34-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2564-41-0x0000000077B30000-0x0000000077CD9000-memory.dmp

Filesize
1.7MB

Download
memory/2588-55-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2588-33-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2588-35-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2588-31-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2588-40-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads