remcos | e6cddde9b8c2001faece2878eeca58d45faafd45e67458f96098e339a5bb0c75

General

Target

cd2061308ba99a7de61a5755a4b4370d.exe
Size

1.4MB
MD5

cd2061308ba99a7de61a5755a4b4370d
SHA1

81029dec9389abaa770a3c3cbe272e832d854327
SHA256

e6cddde9b8c2001faece2878eeca58d45faafd45e67458f96098e339a5bb0c75
SHA512

f9f41020e56cbd3553b7d80278f4b87e37231cc7d57f9a95add7f9a7bfa206f925dc0474ee9faece582f6a779c63426ec0d540d7f80e95366783f61e5b372e49
SSDEEP

24576:w6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Em:PY9UORVOM1jJHzaiape0hsABFRJch6LS

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/2544-9-0x0000000000590000-0x00000000005BC000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2544 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

3056 cmd.exe

pid	process
2544	test.exe

pid	process
3056	cmd.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2900-0-0x0000000000400000-0x00000000006F2000-memory.dmp	upx
behavioral1/memory/2900-36-0x0000000000400000-0x00000000006F2000-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 2544 set thread context of 2720 2544 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

2728 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

test.exe

pid process

2544 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2544 test.exe

description	pid	process	target process
PID 2544 set thread context of 2720	2544	test.exe	vbc.exe

pid	process
2728	schtasks.exe

pid	process
2544	test.exe

description	pid	process
Token: SeDebugPrivilege	2544	test.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

cd2061308ba99a7de61a5755a4b4370d.execmd.exetest.exe

description	pid	process	target process
PID 2900 wrote to memory of 3056	2900	cd2061308ba99a7de61a5755a4b4370d.exe	cmd.exe
PID 2900 wrote to memory of 3056	2900	cd2061308ba99a7de61a5755a4b4370d.exe	cmd.exe
PID 2900 wrote to memory of 3056	2900	cd2061308ba99a7de61a5755a4b4370d.exe	cmd.exe
PID 2900 wrote to memory of 3056	2900	cd2061308ba99a7de61a5755a4b4370d.exe	cmd.exe
PID 3056 wrote to memory of 2544	3056	cmd.exe	test.exe
PID 3056 wrote to memory of 2544	3056	cmd.exe	test.exe
PID 3056 wrote to memory of 2544	3056	cmd.exe	test.exe
PID 3056 wrote to memory of 2544	3056	cmd.exe	test.exe
PID 2544 wrote to memory of 2728	2544	test.exe	schtasks.exe
PID 2544 wrote to memory of 2728	2544	test.exe	schtasks.exe
PID 2544 wrote to memory of 2728	2544	test.exe	schtasks.exe
PID 2544 wrote to memory of 2728	2544	test.exe	schtasks.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe
PID 2544 wrote to memory of 2720	2544	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\cd2061308ba99a7de61a5755a4b4370d.exe
"C:\Users\Admin\AppData\Local\Temp\cd2061308ba99a7de61a5755a4b4370d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2900

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3056

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9A8B.tmp"
4⤵
- Creates scheduled task(s)
PID:2728

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2720

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9A8B.tmp
Filesize
1KB

MD5
935f3a74c7d1af321c5ee8a22d2fb0a7

SHA1
0d8fec9221e405eb0a8f9922c35217526053595b

SHA256
c483f739d79cac837c645097b7f11aee1e38712d44ab9ccbb2364198a6a31988

SHA512
5d8ab2ea2925983160db7893ab3e03159844c3a6cc71364c7731da139e747520fd6d053c123060049104f1020deedaf4b25e6c413875cbafa8fa33073e1bec5e

Download Submit
\Users\Admin\AppData\Local\Temp\test.exe
Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
memory/2544-32-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2544-6-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2544-5-0x00000000003E0000-0x0000000000438000-memory.dmp

Filesize
352KB

Download
memory/2544-7-0x0000000000320000-0x0000000000360000-memory.dmp

Filesize
256KB

Download
memory/2544-8-0x0000000000360000-0x0000000000368000-memory.dmp

Filesize
32KB

Download
memory/2544-9-0x0000000000590000-0x00000000005BC000-memory.dmp

Filesize
176KB

Download
memory/2720-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-28-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2720-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-58-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-56-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-50-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-52-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2720-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2900-36-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download
memory/2900-0-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads