remcos | 80db712c33ffbe9dc0a8a844a8c0e7dcd406db8b6b5d2955c8e60a6395e4f539

General

Target

INVOICE 20211027.exe
Size

1.3MB
MD5

52687110c85e1388c85a91e500a61ec9
SHA1

756f0a1483b7eecdb5b70eb818f5fd569915a334
SHA256

80db712c33ffbe9dc0a8a844a8c0e7dcd406db8b6b5d2955c8e60a6395e4f539
SHA512

e73e3d7f1a7dcd8550f746e9429ddf99fac94ac9ca25e979430242cef7361ad4b3023d3ee6ce85dc8acec89d70c5e35e717f6f3dd6085fafa73f3a54142831bd

Score

10^/10

remcos zara stub agilenet rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

zara stub

C2

185.140.53.178:2404

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-3B07AK
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
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 1 IoCs

Processes:

AddInProcess32.exe

pid process

416 AddInProcess32.exe
Loads dropped DLL 1 IoCs

Processes:

INVOICE 20211027.exe

pid process

620 INVOICE 20211027.exe

pid	process
416	AddInProcess32.exe

pid	process
620	INVOICE 20211027.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

Processes:

resource	yara_rule
behavioral1/memory/620-58-0x0000000000580000-0x00000000005A1000-memory.dmp	agile_net

Suspicious use of SetThreadContext 1 IoCs

Processes:

INVOICE 20211027.exe

description pid process target process

PID 620 set thread context of 416 620 INVOICE 20211027.exe AddInProcess32.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

INVOICE 20211027.exe

pid process

620 INVOICE 20211027.exe
620 INVOICE 20211027.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

INVOICE 20211027.exe

description pid process

Token: SeDebugPrivilege 620 INVOICE 20211027.exe

description	pid	process	target process
PID 620 set thread context of 416	620	INVOICE 20211027.exe	AddInProcess32.exe

pid	process
620	INVOICE 20211027.exe
620	INVOICE 20211027.exe

description	pid	process
Token: SeDebugPrivilege	620	INVOICE 20211027.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

INVOICE 20211027.exe

description	pid	process	target process
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe
PID 620 wrote to memory of 416	620	INVOICE 20211027.exe	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\INVOICE 20211027.exe
"C:\Users\Admin\AppData\Local\Temp\INVOICE 20211027.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:620

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
2⤵
- Executes dropped EXE
PID:416

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
memory/416-66-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-67-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-75-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-74-0x00000000754F1000-0x00000000754F3000-memory.dmp

Filesize
8KB

Download
memory/416-71-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-63-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-64-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-65-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-72-0x000000000042FC39-mapping.dmp

Download
memory/416-70-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-68-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/416-69-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/620-59-0x0000000000840000-0x000000000084B000-memory.dmp

Filesize
44KB

Download
memory/620-55-0x0000000001030000-0x0000000001031000-memory.dmp

Filesize
4KB

Download
memory/620-62-0x0000000000541000-0x0000000000542000-memory.dmp

Filesize
4KB

Download
memory/620-57-0x0000000000540000-0x0000000000541000-memory.dmp

Filesize
4KB

Download
memory/620-58-0x0000000000580000-0x00000000005A1000-memory.dmp

Filesize
132KB

Download
memory/620-60-0x0000000000860000-0x0000000000861000-memory.dmp

Filesize
4KB

Download

Analysis

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