remcos | 0e51d9a05ced1a052a3d1e040c77d7e2159f5337739d69521d14dacbb599a0bd

General

Target

3563d53e5d239655686b28e74442222e.exe
Size

1.4MB
MD5

3563d53e5d239655686b28e74442222e
SHA1

27aa08fdf838f9cfd7eceb7e6d2df148e3e7df07
SHA256

0e51d9a05ced1a052a3d1e040c77d7e2159f5337739d69521d14dacbb599a0bd
SHA512

0c145b3f63f7ece8b8cda919da7e806ded3dcb5575402c155c6372aaf8579a7944f4ea9294a91c78fdba665a02a2b975d8083cd563614cd97c5be98330198687
SSDEEP

24576:e6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6EQ:pY9UORVOM1jJHzaiape0hsABFRJch6LE

Score

10^/10

remcos graced rat rezer0 upx

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

GRACED

C2

thankyoulord.ddns.net:5050

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-0S5XD9
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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/2044-9-0x0000000000F60000-0x0000000000F8C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2044 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1748 cmd.exe

pid	process
2044	test.exe

pid	process
1748	cmd.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2180-27-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

test.exe

description pid process target process

PID 2044 set thread context of 2708 2044 test.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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/Job
T1053

Processes:

schtasks.exe

pid process

2748 schtasks.exe

description	pid	process	target process
PID 2044 set thread context of 2708	2044	test.exe	vbc.exe

pid	process
2748	schtasks.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

3563d53e5d239655686b28e74442222e.execmd.exetest.exe

description	pid	process	target process
PID 2180 wrote to memory of 1748	2180	3563d53e5d239655686b28e74442222e.exe	cmd.exe
PID 2180 wrote to memory of 1748	2180	3563d53e5d239655686b28e74442222e.exe	cmd.exe
PID 2180 wrote to memory of 1748	2180	3563d53e5d239655686b28e74442222e.exe	cmd.exe
PID 2180 wrote to memory of 1748	2180	3563d53e5d239655686b28e74442222e.exe	cmd.exe
PID 1748 wrote to memory of 2044	1748	cmd.exe	test.exe
PID 1748 wrote to memory of 2044	1748	cmd.exe	test.exe
PID 1748 wrote to memory of 2044	1748	cmd.exe	test.exe
PID 1748 wrote to memory of 2044	1748	cmd.exe	test.exe
PID 2044 wrote to memory of 2748	2044	test.exe	schtasks.exe
PID 2044 wrote to memory of 2748	2044	test.exe	schtasks.exe
PID 2044 wrote to memory of 2748	2044	test.exe	schtasks.exe
PID 2044 wrote to memory of 2748	2044	test.exe	schtasks.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe
PID 2044 wrote to memory of 2708	2044	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
PID:2708

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4450.tmp"
2⤵
- Creates scheduled task(s)
PID:2748

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1748

C:\Users\Admin\AppData\Local\Temp\3563d53e5d239655686b28e74442222e.exe
"C:\Users\Admin\AppData\Local\Temp\3563d53e5d239655686b28e74442222e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2180

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scripting

1

T1064

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/2044-25-0x0000000073EC0000-0x00000000745AE000-memory.dmp

Filesize
6.9MB

Download
memory/2044-5-0x0000000000F90000-0x0000000000FE8000-memory.dmp

Filesize
352KB

Download
memory/2044-6-0x0000000073EC0000-0x00000000745AE000-memory.dmp

Filesize
6.9MB

Download
memory/2044-7-0x0000000000A50000-0x0000000000A90000-memory.dmp

Filesize
256KB

Download
memory/2044-8-0x0000000000270000-0x0000000000278000-memory.dmp

Filesize
32KB

Download
memory/2044-9-0x0000000000F60000-0x0000000000F8C000-memory.dmp

Filesize
176KB

Download
memory/2180-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2180-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2708-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-21-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2708-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads