remcos | 31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d

General

Target

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe
Size

448KB
MD5

4b1ae298f40f00471728ac6ce32d601d
SHA1

fc0dc529ace67350a5f94f231ee988d6af9f0539
SHA256

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d
SHA512

42fad8dd08370b697dfde1eb6534876d2b18fd5ff5ce28f33d14a465a456430f99bb989682539ee62584e839e73a0a3a3be81ee479b5d3a82054d08f526960f6

Score

10^/10

remcos business rat

Malware Config

Extracted

Family

remcos

Version

2.5.1 Pro

Botnet

BUSINESS

C2

anotherlevel.ddns.net:7213

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-L9741X
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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

Processes:

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

description	pid	process	target process
PID 1436 set thread context of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

648 1708 WerFault.exe vbc.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

740 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

pid process

1436 31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

description pid process

Token: SeDebugPrivilege 1436 31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

pid	pid_target	process	target process
648	1708	WerFault.exe	vbc.exe

pid	process
740	schtasks.exe

pid	process
1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

description	pid	process
Token: SeDebugPrivilege	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exevbc.exe

description	pid	process	target process
PID 1436 wrote to memory of 740	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	schtasks.exe
PID 1436 wrote to memory of 740	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	schtasks.exe
PID 1436 wrote to memory of 740	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	schtasks.exe
PID 1436 wrote to memory of 740	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	schtasks.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1436 wrote to memory of 1708	1436	31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe	vbc.exe
PID 1708 wrote to memory of 648	1708	vbc.exe	WerFault.exe
PID 1708 wrote to memory of 648	1708	vbc.exe	WerFault.exe
PID 1708 wrote to memory of 648	1708	vbc.exe	WerFault.exe
PID 1708 wrote to memory of 648	1708	vbc.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe
"C:\Users\Admin\AppData\Local\Temp\31661e8e9ab89af4cac4a30a0fe3f8b896e5a4140eb0fb4003cf22521a25010d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DOGdvdFzLjUsb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC16C.tmp"
2⤵
- Creates scheduled task(s)
PID:740

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1708 -s 172
3⤵
- Program crash
PID:648

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC16C.tmp
Filesize
1KB

MD5
eb86ab4d93f647b3d56967a8ce07527e

SHA1
e4da1a5c5b6e8bdb63dae1f0995ec0b76702cd44

SHA256
32a366a40d7385eca4e5e0205382e39fd1d4bf776905561dcfc2fab1fdec1d62

SHA512
3a55e52f6e0d8ab45e65bfd09d6a2b13f1fcf86630d846c3538773219744c29c9060672fe56a7d29859147770b894575419a6eb8fced090e972a336300540e4c

Download Submit
memory/648-76-0x0000000000000000-mapping.dmp

Download
memory/740-58-0x0000000000000000-mapping.dmp

Download
memory/1436-56-0x0000000000280000-0x000000000029C000-memory.dmp

Filesize
112KB

Download
memory/1436-57-0x0000000000990000-0x00000000009D0000-memory.dmp

Filesize
256KB

Download
memory/1436-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1436-54-0x0000000000B60000-0x0000000000BD6000-memory.dmp

Filesize
472KB

Download
memory/1708-70-0x0000000000413B74-mapping.dmp

Download
memory/1708-69-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-75-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-73-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-67-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-66-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-63-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1708-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads