guloader | c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 02:38

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General

Target

HSBC PAYMENT CONFIRMATION COPY.PDF.exe
Size

692KB
MD5

904ff58ae02442b30663c9be0f4d9e77
SHA1

9009f89ab55e84c8bbf70303247c62f8048deb77
SHA256

c4e9719f719092bcb6dac7893d6e3601a32ff93a9ff5d51ba55af82cebd902f5
SHA512

46aceab3cd6a6ba0ad1405d4c4f124863f4fc07a5dd0ee7df2c210c285eeb0c367d91d4e7e6e7c4865e6f494dbd3c211fb09ff4485621f69e819be3ebbb722fa
SSDEEP

12288:K2Co9kUzVAtb/WMdXDKDAObjsZt7P68BmPE:Kt39W8aTbjsH7P

Score

10^/10

guloader remcos remotehost collection downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

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/1848-36-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/1848-34-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/1848-54-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/776-35-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/776-33-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/776-48-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 9 IoCs

Processes:

resource	yara_rule
behavioral1/memory/776-35-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2192-40-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2192-43-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2192-39-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1848-36-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/1848-34-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/776-33-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/776-48-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1848-54-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Loads dropped DLL 1 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid process

1688 HSBC PAYMENT CONFIRMATION 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

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid process

2672 HSBC PAYMENT CONFIRMATION COPY.PDF.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exeHSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid process

1688 HSBC PAYMENT CONFIRMATION COPY.PDF.exe
2672 HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid	process
2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exeHSBC PAYMENT CONFIRMATION COPY.PDF.exe

description	pid	process	target process
PID 1688 set thread context of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 set thread context of 776	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 set thread context of 1848	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 set thread context of 2192	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Drops file in Program Files directory 3 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\bevirket\kabinettets.bef	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
File opened for modification	C:\Program Files (x86)\barbatimao.Gro	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
File opened for modification	C:\Program Files (x86)\Common Files\pernille\aftershine.ini	HSBC PAYMENT CONFIRMATION 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 PAYMENT CONFIRMATION COPY.PDF.exe

pid process

776 HSBC PAYMENT CONFIRMATION COPY.PDF.exe
776 HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid	process
776	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
776	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exeHSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid	process
1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

description pid process

Token: SeDebugPrivilege 2192 HSBC PAYMENT CONFIRMATION COPY.PDF.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid process

2672 HSBC PAYMENT CONFIRMATION COPY.PDF.exe

description	pid	process
Token: SeDebugPrivilege	2192	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

pid	process
2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

HSBC PAYMENT CONFIRMATION COPY.PDF.exeHSBC PAYMENT CONFIRMATION COPY.PDF.exe

C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe
"C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION 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:2672
- - C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\jgfhjulaufslgcygzduliccp"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:776
- - C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tasakewbinkqjqmkqohnlhwyhwb"
    3⤵
    - Accesses Microsoft Outlook accounts
    PID:1848
- - C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC PAYMENT CONFIRMATION COPY.PDF.exe" /stext "C:\Users\Admin\AppData\Local\Temp\vvykkxpvevcvtwiwzzbowurpqdthxnf"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
4aebce9d96f6c0c9da70decf64b745f3

SHA1
bee58bcdf0789dc85a148af0a7c76102c1f8912d

SHA256
f89811fc3461cd6dfdab40e037a9fe334ffefdf75648393882f1863e53f923ab

SHA512
87832a03d23f7aedf1019c4f21a528c2a320332390222a70f46ac30fdfab80c56e9aeefca15acab06138680a8b10aeb64c259ac992f76713f9556f0f1c316c0c

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

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nst1FB3.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/776-35-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/776-48-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/776-28-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/776-30-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/776-33-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1688-17-0x0000000004160000-0x00000000061A0000-memory.dmp

Filesize
32.2MB

Download
memory/1688-21-0x0000000004160000-0x00000000061A0000-memory.dmp

Filesize
32.2MB

Download
memory/1688-26-0x0000000004160000-0x00000000061A0000-memory.dmp

Filesize
32.2MB

Download
memory/1688-18-0x0000000076DE1000-0x0000000076EE2000-memory.dmp

Filesize
1.0MB

Download
memory/1688-19-0x0000000076DE0000-0x0000000076F89000-memory.dmp

Filesize
1.7MB

Download
memory/1848-36-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1848-54-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1848-34-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1848-32-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1848-29-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/2192-38-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2192-37-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2192-39-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2192-43-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2192-40-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/2672-91-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-61-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-55-0x0000000034640000-0x0000000034659000-memory.dmp

Filesize
100KB

Download
memory/2672-58-0x0000000034640000-0x0000000034659000-memory.dmp

Filesize
100KB

Download
memory/2672-59-0x0000000034640000-0x0000000034659000-memory.dmp

Filesize
100KB

Download
memory/2672-20-0x0000000076DE0000-0x0000000076F89000-memory.dmp

Filesize
1.7MB

Download
memory/2672-64-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-31-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-67-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-70-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-73-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-76-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-79-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-82-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-85-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-88-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-23-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download
memory/2672-94-0x00000000004D0000-0x0000000001532000-memory.dmp

Filesize
16.4MB

Download

description	pid	process	target process
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 1688 wrote to memory of 2672	1688	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 776	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 776	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 776	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 776	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 1848	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 1848	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 1848	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 1848	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 2192	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 2192	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 2192	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe
PID 2672 wrote to memory of 2192	2672	HSBC PAYMENT CONFIRMATION COPY.PDF.exe	HSBC PAYMENT CONFIRMATION COPY.PDF.exe