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 3 IoCs

Password recovery tool for various email clients

Processes:

resource	yara_rule
behavioral1/memory/1932-89-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1932-99-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView
behavioral1/memory/1932-106-0x0000000000400000-0x0000000000457000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

Processes:

resource	yara_rule
behavioral1/memory/1200-90-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1200-98-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/1200-101-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 8 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-89-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/1736-91-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1200-90-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1736-92-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1200-98-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1932-99-0x0000000000400000-0x0000000000457000-memory.dmp	Nirsoft
behavioral1/memory/1200-101-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1932-106-0x0000000000400000-0x0000000000457000-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

1400 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
1400	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-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	31883190ELECTRICAL.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

468 31883190ELECTRICAL.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

pid process

1400 31883190ELECTRICAL.exe
468 31883190ELECTRICAL.exe

pid	process
468	31883190ELECTRICAL.exe

pid	process
1400	31883190ELECTRICAL.exe
468	31883190ELECTRICAL.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

description	pid	process	target process
PID 1400 set thread context of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 set thread context of 1200	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 set thread context of 1932	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 set thread context of 1736	468	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 2 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

1200 31883190ELECTRICAL.exe
1200 31883190ELECTRICAL.exe
Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

pid process

1400 31883190ELECTRICAL.exe
468 31883190ELECTRICAL.exe
468 31883190ELECTRICAL.exe
468 31883190ELECTRICAL.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

31883190ELECTRICAL.exe

description pid process

Token: SeDebugPrivilege 1736 31883190ELECTRICAL.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

31883190ELECTRICAL.exe

pid process

468 31883190ELECTRICAL.exe

pid	process
1200	31883190ELECTRICAL.exe
1200	31883190ELECTRICAL.exe

pid	process
1400	31883190ELECTRICAL.exe
468	31883190ELECTRICAL.exe
468	31883190ELECTRICAL.exe
468	31883190ELECTRICAL.exe

description	pid	process
Token: SeDebugPrivilege	1736	31883190ELECTRICAL.exe

pid	process
468	31883190ELECTRICAL.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

31883190ELECTRICAL.exe31883190ELECTRICAL.exe

description	pid	process	target process
PID 1400 wrote to memory of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1400 wrote to memory of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1400 wrote to memory of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1400 wrote to memory of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 1400 wrote to memory of 468	1400	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1200	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1200	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1200	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1200	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1932	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1932	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1932	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1932	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1736	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1736	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1736	468	31883190ELECTRICAL.exe	31883190ELECTRICAL.exe
PID 468 wrote to memory of 1736	468	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:1400

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:468

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\szutracybqywfouxwbpk"
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1200

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\ccamssnrpyqbiuijfmcloquh"
3⤵
- Accesses Microsoft Outlook accounts
PID:1932

C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe
C:\Users\Admin\AppData\Local\Temp\31883190ELECTRICAL.exe /stext "C:\Users\Admin\AppData\Local\Temp\nwnwslytdgiosaenwxwfzdpyery"
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:1736

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
2e6f0e980a572ff136f603de0bce314f

SHA1
3e803f797d2f7d0822576bb80ba497be1a12cef1

SHA256
32983600614af279e79c92304e223ef36dbc5354c3f1cbc3b7a6ff81032ad8ec

SHA512
8c0136e13420fd50126381a97fccf9811e2c9a625c699af35a6638a503c05254c1a95673bd6e89f443ea0ef26d34d4e7b7e7869ef3dba779d8e9cce58f73a7df

Download Submit
C:\Users\Admin\AppData\Local\Temp\szutracybqywfouxwbpk
Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
\Users\Admin\AppData\Local\Temp\nsd2148.tmp\System.dll
Filesize
11KB

MD5
17ed1c86bd67e78ade4712be48a7d2bd

SHA1
1cc9fe86d6d6030b4dae45ecddce5907991c01a0

SHA256
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb

SHA512
0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5

Download Submit
memory/468-122-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-130-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-69-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-71-0x0000000001470000-0x00000000040C0000-memory.dmp

Filesize
44.3MB

Download
memory/468-72-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-78-0x0000000001470000-0x00000000040C0000-memory.dmp

Filesize
44.3MB

Download
memory/468-68-0x0000000001470000-0x00000000040C0000-memory.dmp

Filesize
44.3MB

Download
memory/468-115-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-126-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-109-0x0000000033BC0000-0x0000000033BD9000-memory.dmp

Filesize
100KB

Download
memory/468-112-0x0000000033BC0000-0x0000000033BD9000-memory.dmp

Filesize
100KB

Download
memory/468-119-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-67-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-104-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/468-113-0x0000000033BC0000-0x0000000033BD9000-memory.dmp

Filesize
100KB

Download
memory/1200-80-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1200-98-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1200-90-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1200-101-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1200-86-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1400-65-0x00000000027A0000-0x00000000053F0000-memory.dmp

Filesize
44.3MB

Download
memory/1400-66-0x00000000027A0000-0x00000000053F0000-memory.dmp

Filesize
44.3MB

Download
memory/1736-91-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1736-92-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1736-87-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1736-84-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/1932-106-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1932-99-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1932-89-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1932-88-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1932-82-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads