remcos | f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33

General

Target

f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe
Size

839KB
MD5

4de864017ab66eb555be73eb54749347
SHA1

6e81343018136b271d1f95db536ca6b2fd1dfcd6
SHA256

f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33
SHA512

689fcdc236a287bfd0cd866ec3af3ab471d53579a37daf59c74b89400f937ada873edb5a968bfd04e57573391c6e1d6e2af86e4e11c05ea5a2bb70b22280a868

Score

10^/10

remcos marzo rat

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

Marzo

C2

marzoorganigrama20202020.duckdns.org:1419

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-3EHDVQ
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Blocklisted process makes network request 4 IoCs

Processes:

cmd.exe

flow pid process

16 1088 cmd.exe
27 1088 cmd.exe
28 1088 cmd.exe
30 1088 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2720 rundll32.exe
Drops file in Windows directory 1 IoCs

Processes:

cmd.exe

description ioc process

File created C:\Windows\Tasks\winver.job cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

2720 rundll32.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

rundll32.exe

pid process

2720 rundll32.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

cmd.exe

pid process

1088 cmd.exe

flow	pid	process
16	1088	cmd.exe
27	1088	cmd.exe
28	1088	cmd.exe
30	1088	cmd.exe

pid	process
2720	rundll32.exe

description	ioc	process
File created	C:\Windows\Tasks\winver.job	cmd.exe

pid	process
2720	rundll32.exe

pid	process
2720	rundll32.exe

pid	process
1088	cmd.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exerundll32.exe

description	pid	process	target process
PID 964 wrote to memory of 2720	964	f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe	rundll32.exe
PID 964 wrote to memory of 2720	964	f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe	rundll32.exe
PID 964 wrote to memory of 2720	964	f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe	rundll32.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe
PID 2720 wrote to memory of 1088	2720	rundll32.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe
"C:\Users\Admin\AppData\Local\Temp\f2efed3085222702283f7d44a8b2ce38612575a40ae54a17aaadf22054217b33.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\system32\rundll32.exe Galvanometry,Pickaninny
2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2720

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe"
3⤵
- Blocklisted process makes network request
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
PID:1088

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Firebug
MD5
7663e89cb0bce6839c818cf01bddd41f

SHA1
a099cdaae06bb49ec15e3d9db3127b9da51acf89

SHA256
a196489d91451949ff3521f357fdf4de50aa99b4df93f9a258611c3a3ec1d099

SHA512
9dd59033e30a49cc967c9f5dbc7ac44b0e3e96696a60a0c8585c8081a30553d8a411e878d3cea891f09859d7aaddfc98103ca99fa336d973fafb345c651250d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Galvanometry.DLL
MD5
bc2c79b3780c12c0d508b4fbf37ef15c

SHA1
5b2328a38ff40d57c78a8174ebdc9a7f5553c35f

SHA256
c0852f62db36c97bb577b840dd58eafd4cd579d09114e2f5c5cbd5858378b598

SHA512
9c73429153d6a9b546ff210ec1ef13d2302687992bab26192bb735e9557bec94fc4d6f2ba790afc32933277c1a720cd2015aa19e6522c00150f32fe95cc95136

Download Submit
\Users\Admin\AppData\Local\Temp\Galvanometry.dll
MD5
bc2c79b3780c12c0d508b4fbf37ef15c

SHA1
5b2328a38ff40d57c78a8174ebdc9a7f5553c35f

SHA256
c0852f62db36c97bb577b840dd58eafd4cd579d09114e2f5c5cbd5858378b598

SHA512
9c73429153d6a9b546ff210ec1ef13d2302687992bab26192bb735e9557bec94fc4d6f2ba790afc32933277c1a720cd2015aa19e6522c00150f32fe95cc95136

Download Submit
memory/1088-125-0x0000000077639000-0x000000007763A000-memory.dmp

Filesize
4KB

Download
memory/1088-131-0x00007FFE414C0000-0x00007FFE4169B000-memory.dmp

Filesize
1.9MB

Download
memory/1088-151-0x00000000009C0000-0x00000000009C6000-memory.dmp

Filesize
24KB

Download
memory/1088-157-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-122-0x00000000004E0000-0x00000000004E2000-memory.dmp

Filesize
8KB

Download
memory/2720-121-0x00000000736A0000-0x000000007374D000-memory.dmp

Filesize
692KB

Download
memory/2720-123-0x0000000075450000-0x00000000754B7000-memory.dmp

Filesize
412KB

Download
memory/2720-124-0x00007FFE414C0000-0x00007FFE4169B000-memory.dmp

Filesize
1.9MB

Download

Analysis

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