remcos | a47783e77972a2cd6711b618b3dd3a57544e6c225e37d44961e967b2530e63da

General

Target

b9df9c09f708b886eee75c536d7e002a.exe
Size

1.4MB
MD5

b9df9c09f708b886eee75c536d7e002a
SHA1

f47797d0b3ed574db1ae1a3c7820cfeee6d21d3f
SHA256

a47783e77972a2cd6711b618b3dd3a57544e6c225e37d44961e967b2530e63da
SHA512

156c61f2a7d9108b42491d5a2d457be36913faff6ac23044372120e481beb32c08a4c4f121067b2b58f0485649ddd8f396f2fdc89db30c4772222adb2b6c6a86
SSDEEP

24576:n6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ER:6Y9UORVOM1jJHzaiape0hsABFRJch6Ll

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
behavioral2/memory/3492-12-0x00000000056B0000-0x00000000056DC000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

3492 test.exe

pid	process
3492	test.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2720-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2720-27-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/2720-25-0x0000000000400000-0x00000000006F1000-memory.dmp	upx

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
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

1968 schtasks.exe

pid	process
1968	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b9df9c09f708b886eee75c536d7e002a.execmd.exe

description	pid	process	target process
PID 2720 wrote to memory of 1572	2720	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2720 wrote to memory of 1572	2720	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 2720 wrote to memory of 1572	2720	b9df9c09f708b886eee75c536d7e002a.exe	cmd.exe
PID 1572 wrote to memory of 3492	1572	cmd.exe	test.exe
PID 1572 wrote to memory of 3492	1572	cmd.exe	test.exe
PID 1572 wrote to memory of 3492	1572	cmd.exe	test.exe

C:\Users\Admin\AppData\Local\Temp\b9df9c09f708b886eee75c536d7e002a.exe
"C:\Users\Admin\AppData\Local\Temp\b9df9c09f708b886eee75c536d7e002a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2720

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:1572

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
PID:3492

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2260

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6CA4.tmp"
4⤵
- Creates scheduled task(s)
PID:1968

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/2260-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-51-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-41-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2260-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2720-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2720-25-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/3492-24-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3492-5-0x00000000006E0000-0x0000000000738000-memory.dmp

Filesize
352KB

Download
memory/3492-12-0x00000000056B0000-0x00000000056DC000-memory.dmp

Filesize
176KB

Download
memory/3492-13-0x0000000005D70000-0x0000000005E0C000-memory.dmp

Filesize
624KB

Download
memory/3492-11-0x0000000005130000-0x0000000005138000-memory.dmp

Filesize
32KB

Download
memory/3492-10-0x0000000005140000-0x000000000514A000-memory.dmp

Filesize
40KB

Download
memory/3492-9-0x00000000050B0000-0x00000000050C0000-memory.dmp

Filesize
64KB

Download
memory/3492-8-0x0000000005170000-0x0000000005202000-memory.dmp

Filesize
584KB

Download
memory/3492-7-0x0000000005720000-0x0000000005CC4000-memory.dmp

Filesize
5.6MB

Download
memory/3492-6-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads