guloader | ecfc23f618cbfb73fb59ffa9041ef8308eee9cd322c612efcf6e09815eba6851

General

Target

31883190ELECTRICAL.exe
Size

586KB
MD5

fe4416331247444c6c57ea58ad78e1ef
SHA1

d738112ccfc03f09b5b568e13f34cc02fcd40c73
SHA256

ecfc23f618cbfb73fb59ffa9041ef8308eee9cd322c612efcf6e09815eba6851
SHA512

3cadbedbe829faf961bba5c06b64f7c494aefc9c18079004b28fdb9f58352e79d041b65846b162789cb651c8a636b413d25101407d966337595dbdc07781cdcb
SSDEEP

12288:Vc1TtA2C24kq3x/cxZiDsxJbOcSEcCOkGQUgZLvWAWNCmfsujmZGEQEO:Vk+B24kqF7DsxXLPTXvWHMmUujmTQB

Score

10^/10

guloader remcos remotehost collection downloader rat spyware stealer

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

155.94.136.161:2404

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-EN47F6
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 2 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral2/memory/2560-163-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral2/memory/2560-168-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral2/memory/4568-161-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4568-171-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral2/memory/4568-177-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 7 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4568-161-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/2560-163-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/2560-168-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral2/memory/4568-171-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral2/memory/4192-173-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4192-174-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral2/memory/4568-177-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	31883190ELECTRICAL.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	31883190ELECTRICAL.exe

Loads dropped DLL 1 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

3480 31883190ELECTRICAL.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
T1081

pid	process
3480	31883190ELECTRICAL.exe

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

31883190ELECTRICAL.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	31883190ELECTRICAL.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

1748 31883190ELECTRICAL.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

pid process

3480 31883190ELECTRICAL.exe
1748 31883190ELECTRICAL.exe

pid	process
1748	31883190ELECTRICAL.exe

pid	process
3480	31883190ELECTRICAL.exe
1748	31883190ELECTRICAL.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

description	pid	process	target process
PID 3480 set thread context of 1748	3480	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 set thread context of 4568	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 set thread context of 2560	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 set thread context of 4192	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

pid	process
4568	31883190ELECTRICAL.exe
4568	31883190ELECTRICAL.exe
4192	31883190ELECTRICAL.exe
4192	31883190ELECTRICAL.exe
4568	31883190ELECTRICAL.exe
4568	31883190ELECTRICAL.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

pid process

3480 31883190ELECTRICAL.exe
1748 31883190ELECTRICAL.exe
1748 31883190ELECTRICAL.exe
1748 31883190ELECTRICAL.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

31883190ELECTRICAL.exe

description pid process

Token: SeDebugPrivilege 4192 31883190ELECTRICAL.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

1748 31883190ELECTRICAL.exe

pid	process
3480	31883190ELECTRICAL.exe
1748	31883190ELECTRICAL.exe
1748	31883190ELECTRICAL.exe
1748	31883190ELECTRICAL.exe

description	pid	process
Token: SeDebugPrivilege	4192	31883190ELECTRICAL.exe

pid	process
1748	31883190ELECTRICAL.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

description	pid	process	target process
PID 3480 wrote to memory of 1748	3480	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 3480 wrote to memory of 1748	3480	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 3480 wrote to memory of 1748	3480	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 3480 wrote to memory of 1748	3480	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4568	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4568	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4568	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 2560	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 2560	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 2560	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4192	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4192	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1748 wrote to memory of 4192	1748	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
"C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3480

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
"C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1748

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\hhpbmkjyk"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:4568

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\sjumncusgqbk"
3⤵
- Accesses Microsoft Outlook accounts
PID:2560

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\udaenvmtuytpnab"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4192

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\remcos\logs.dat
Filesize
188B

MD5
f6a0d03abfdd26d5717dcab2dba509a7

SHA1
db2c8edd655a519c7f9aa55cc1e8ed078b19febf

SHA256
a76e3cce33f14a168f1a11ff4affe429468d7fed2ef243ef769a67c1283f2f5d

SHA512
4920defcc7c5aee36ab3408cfa647a066422a36854312f9b43a3fa1f1833e13d7d49ee09e78d68072b04d4794b4e9c8e04583e49bdd228d8a9b1045b3077c19f

Download Submit
C:\Users\Admin\AppData\Local\Temp\hhpbmkjyk
Filesize
4KB

MD5
59f5e109fab5be401d6bd4ec9761b32a

SHA1
7de6b60f361f61a2e4567b2f44e5206afc6a23b0

SHA256
4829f91f7626e1917bd2882f0356c17596630efbc4883a911eb5c5b2955fb932

SHA512
10dd0784bad0d47bf9a2f1f0dcc7f0181df06474808a8104786e43c4392bcc7e3809676d5ecc95d2ce74e043fd329952b03d3efdcd905b15175cccdf385a1a0c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj6C5C.tmp\System.dll
Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/1748-152-0x0000000001660000-0x00000000042B0000-memory.dmp

Filesize
44.3MB

Download
memory/1748-180-0x0000000034E90000-0x0000000034EA9000-memory.dmp

Filesize
100KB

Download
memory/1748-147-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-151-0x0000000001660000-0x00000000042B0000-memory.dmp

Filesize
44.3MB

Download
memory/1748-145-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-194-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-191-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-146-0x0000000001660000-0x00000000042B0000-memory.dmp

Filesize
44.3MB

Download
memory/1748-188-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-185-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/1748-184-0x0000000034E90000-0x0000000034EA9000-memory.dmp

Filesize
100KB

Download
memory/1748-183-0x0000000034E90000-0x0000000034EA9000-memory.dmp

Filesize
100KB

Download
memory/2560-160-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2560-155-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2560-163-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/2560-168-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3480-144-0x0000000002A90000-0x00000000056E0000-memory.dmp

Filesize
44.3MB

Download
memory/3480-143-0x0000000002A90000-0x00000000056E0000-memory.dmp

Filesize
44.3MB

Download
memory/4192-174-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4192-170-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4192-162-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4192-173-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/4568-177-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4568-159-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4568-161-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4568-171-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/4568-154-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads