remcos | e0b4e1a48030555c2fc7fb252b593f9ca83a10d38acef92cb8a5de7aaa0c5376

General

Target

PAYMENT SWIFT COPY.js
Size

864KB
MD5

70b45b00b9017d22b15444bb24e0c1b6
SHA1

8d92c9e06d28dac40458cd6d7aa3fad7bc602ca5
SHA256

e0b4e1a48030555c2fc7fb252b593f9ca83a10d38acef92cb8a5de7aaa0c5376
SHA512

1fb69d0edb5e6e120f61235dc688cc9fc8d44cd7b4839acafa328d9060f5f894be511a3063ec2a9109d16f57cac752764612480c01828e8c345da1d44863b9d0
SSDEEP

12288:H9inxFqnNOmAA7h6E/Un20p24ov322THsp7E7zWH9Nk7xyvPDd6L4y238KF:H9WEMdp2tLk4wh

Score

10^/10

remcos vjw0rm remotehost persistence rat trojan worm

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

45.139.105.174:3111

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
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-XI5CH7
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

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

6 1016 wscript.exe
28 1016 wscript.exe
49 1016 wscript.exe
61 1016 wscript.exe
62 1016 wscript.exe
63 1016 wscript.exe
Executes dropped EXE 2 IoCs

Processes:

01N200M.exeremcos.exe

pid process

4992 01N200M.exe
5076 remcos.exe

flow	pid	process
6	1016	wscript.exe
28	1016	wscript.exe
49	1016	wscript.exe
61	1016	wscript.exe
62	1016	wscript.exe
63	1016	wscript.exe

pid	process
4992	01N200M.exe
5076	remcos.exe

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exe01N200M.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	01N200M.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wBLYBgRUFJ.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wBLYBgRUFJ.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

01N200M.exeremcos.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	01N200M.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	01N200M.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	01N200M.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	01N200M.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

remcos.exe

description pid process target process

PID 5076 set thread context of 4284 5076 remcos.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

01N200M.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings 01N200M.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

remcos.exe

pid process

5076 remcos.exe

description	pid	process	target process
PID 5076 set thread context of 4284	5076	remcos.exe	iexplore.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings	01N200M.exe

pid	process
5076	remcos.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

wscript.exe01N200M.exeWScript.execmd.exeremcos.exe

description	pid	process	target process
PID 1144 wrote to memory of 1016	1144	wscript.exe	wscript.exe
PID 1144 wrote to memory of 1016	1144	wscript.exe	wscript.exe
PID 1144 wrote to memory of 4992	1144	wscript.exe	01N200M.exe
PID 1144 wrote to memory of 4992	1144	wscript.exe	01N200M.exe
PID 1144 wrote to memory of 4992	1144	wscript.exe	01N200M.exe
PID 4992 wrote to memory of 4868	4992	01N200M.exe	WScript.exe
PID 4992 wrote to memory of 4868	4992	01N200M.exe	WScript.exe
PID 4992 wrote to memory of 4868	4992	01N200M.exe	WScript.exe
PID 4868 wrote to memory of 4696	4868	WScript.exe	cmd.exe
PID 4868 wrote to memory of 4696	4868	WScript.exe	cmd.exe
PID 4868 wrote to memory of 4696	4868	WScript.exe	cmd.exe
PID 4696 wrote to memory of 5076	4696	cmd.exe	remcos.exe
PID 4696 wrote to memory of 5076	4696	cmd.exe	remcos.exe
PID 4696 wrote to memory of 5076	4696	cmd.exe	remcos.exe
PID 5076 wrote to memory of 4284	5076	remcos.exe	iexplore.exe
PID 5076 wrote to memory of 4284	5076	remcos.exe	iexplore.exe
PID 5076 wrote to memory of 4284	5076	remcos.exe	iexplore.exe
PID 5076 wrote to memory of 4284	5076	remcos.exe	iexplore.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\PAYMENT SWIFT COPY.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\wBLYBgRUFJ.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
PID:1016

C:\Users\Admin\AppData\Roaming\01N200M.exe
"C:\Users\Admin\AppData\Roaming\01N200M.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4992

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\wexmcsazrhqolwxdnnctz.vbs"
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4868

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\ProgramData\Remcos\remcos.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:4696

C:\ProgramData\Remcos\remcos.exe
C:\ProgramData\Remcos\remcos.exe
5⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5076

\??\c:\program files (x86)\internet explorer\iexplore.exe
"c:\program files (x86)\internet explorer\iexplore.exe"
6⤵
PID:4284

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\Remcos\remcos.exe
Filesize
470KB

MD5
8f6f561ec65b393126f5b648f890e78a

SHA1
cea6ff88ba56fcfdcf5992b5b35ec2accbd234a3

SHA256
8acb8ff6a5565f9d8b56e2712858db04e577c53906c8045fa43bdf1e7669120a

SHA512
58e2544db5c4a9771d3cfef8364e80f4b0fb954f7ace2585fbb619d5b9de641eaac6956127d61d5808874633033d3c6d4322fb250a47a7dce5a3c8f2e7f8b27b

Download Submit
C:\ProgramData\Remcos\remcos.exe
Filesize
470KB

MD5
8f6f561ec65b393126f5b648f890e78a

SHA1
cea6ff88ba56fcfdcf5992b5b35ec2accbd234a3

SHA256
8acb8ff6a5565f9d8b56e2712858db04e577c53906c8045fa43bdf1e7669120a

SHA512
58e2544db5c4a9771d3cfef8364e80f4b0fb954f7ace2585fbb619d5b9de641eaac6956127d61d5808874633033d3c6d4322fb250a47a7dce5a3c8f2e7f8b27b

Download Submit
C:\Users\Admin\AppData\Local\Temp\wexmcsazrhqolwxdnnctz.vbs
Filesize
386B

MD5
1ec6289c6fd4c2ded6b2836ed28cbeb5

SHA1
c4e08195e6c640eb8860acc03fda1d649b4fe070

SHA256
6efdc40f9eb217f879607614e928b65bff759e424f3efb31faceb2a043c32dc2

SHA512
20bc46f4dee22f75f15c402c7c2eaee60fff7dd92548050585571dcbefd59485cc249c06bc3f1aac7a138e5ae67c0c3918b46ffa24c8b0f1b092e2f6b6e21288

Download Submit
C:\Users\Admin\AppData\Roaming\01N200M.exe
Filesize
470KB

MD5
8f6f561ec65b393126f5b648f890e78a

SHA1
cea6ff88ba56fcfdcf5992b5b35ec2accbd234a3

SHA256
8acb8ff6a5565f9d8b56e2712858db04e577c53906c8045fa43bdf1e7669120a

SHA512
58e2544db5c4a9771d3cfef8364e80f4b0fb954f7ace2585fbb619d5b9de641eaac6956127d61d5808874633033d3c6d4322fb250a47a7dce5a3c8f2e7f8b27b

Download Submit
C:\Users\Admin\AppData\Roaming\01N200M.exe
Filesize
470KB

MD5
8f6f561ec65b393126f5b648f890e78a

SHA1
cea6ff88ba56fcfdcf5992b5b35ec2accbd234a3

SHA256
8acb8ff6a5565f9d8b56e2712858db04e577c53906c8045fa43bdf1e7669120a

SHA512
58e2544db5c4a9771d3cfef8364e80f4b0fb954f7ace2585fbb619d5b9de641eaac6956127d61d5808874633033d3c6d4322fb250a47a7dce5a3c8f2e7f8b27b

Download Submit
C:\Users\Admin\AppData\Roaming\wBLYBgRUFJ.js
Filesize
10KB

MD5
dcd3971981a8d59077182f13d6f43f6f

SHA1
30119d3a59eb076e97a8001d8fe1f15ff1c1721f

SHA256
817f6a35953f7af8b3c4e17e026dc765f06dde5b094f0573edd282284e7db332

SHA512
cfd5edd4c25b182a03244eb6f94b4676a8abe556ef8b593a93ab369db97f7803081be40c2d02d8aec6da6bb9994e8742ce3f49d76ead34647c5a4ffe1c3e5674

Download Submit
memory/1016-132-0x0000000000000000-mapping.dmp

Download
memory/4284-143-0x0000000000000000-mapping.dmp

Download
memory/4284-144-0x0000000000B30000-0x0000000000BAF000-memory.dmp

Filesize
508KB

Download
memory/4284-145-0x0000000000B30000-0x0000000000BAF000-memory.dmp

Filesize
508KB

Download
memory/4696-139-0x0000000000000000-mapping.dmp

Download
memory/4868-137-0x0000000000000000-mapping.dmp

Download
memory/4992-134-0x0000000000000000-mapping.dmp

Download
memory/5076-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads