remcos | c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2

General

Target

6a606f43c1efe9e9c3e2c20d5ae7913d.exe
Size

1.4MB
MD5

6a606f43c1efe9e9c3e2c20d5ae7913d
SHA1

973bc27890a409fdd834932b4696035ad2667180
SHA256

c173f94932fef39a323eff3c2c91e9a5a49a56875cd9f71685add6658ce7fdb2
SHA512

f77df6618e2d097152b6aa05298a75d8bfbfe70f4b4ec5627a66f154655eebc354cd5b7dfc93d705fcdeadd768a54f4daaf52a4c7482dc2ca7d4d4d3a8f72df3
SSDEEP

24576:F6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6Eu:UY9UORVOM1jJHzaiape0hsABFRJch6LS

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/2248-9-0x0000000002080000-0x00000000020AC000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2248 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2648 cmd.exe

pid	process
2248	test.exe

pid	process
2648	cmd.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1612-1-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/1612-10-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/1612-27-0x0000000000400000-0x00000000006F1000-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 2248 set thread context of 2968 2248 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

2688 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

test.exe

pid process

2248 test.exe
2248 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2248 test.exe

description	pid	process	target process
PID 2248 set thread context of 2968	2248	test.exe	vbc.exe

pid	process
2688	schtasks.exe

pid	process
2248	test.exe
2248	test.exe

description	pid	process
Token: SeDebugPrivilege	2248	test.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

6a606f43c1efe9e9c3e2c20d5ae7913d.execmd.exetest.exe

description	pid	process	target process
PID 1612 wrote to memory of 2648	1612	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 1612 wrote to memory of 2648	1612	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 1612 wrote to memory of 2648	1612	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 1612 wrote to memory of 2648	1612	6a606f43c1efe9e9c3e2c20d5ae7913d.exe	cmd.exe
PID 2648 wrote to memory of 2248	2648	cmd.exe	test.exe
PID 2648 wrote to memory of 2248	2648	cmd.exe	test.exe
PID 2648 wrote to memory of 2248	2648	cmd.exe	test.exe
PID 2648 wrote to memory of 2248	2648	cmd.exe	test.exe
PID 2248 wrote to memory of 2688	2248	test.exe	schtasks.exe
PID 2248 wrote to memory of 2688	2248	test.exe	schtasks.exe
PID 2248 wrote to memory of 2688	2248	test.exe	schtasks.exe
PID 2248 wrote to memory of 2688	2248	test.exe	schtasks.exe
PID 2248 wrote to memory of 2808	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2808	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2808	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2808	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe
PID 2248 wrote to memory of 2968	2248	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe
"C:\Users\Admin\AppData\Local\Temp\6a606f43c1efe9e9c3e2c20d5ae7913d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2648

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:2248

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6E5D.tmp"
4⤵
- Creates scheduled task(s)
PID:2688

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2808

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2968

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

C:\Users\Admin\AppData\Local\Temp\tmp6E5D.tmp
Filesize
1KB

MD5
6fa5f5d438982322fa8c525744a0cc23

SHA1
b2a7eebd3d63755f08ba608efe2ce842f7b4d2af

SHA256
c6c460cc92fd41330fd2d67cbb59a74e598929b0edc49bb7e00a42300d6705fe

SHA512
4eb30bd0229c22ddb063f194de7b39582714f2de9208ebf68b77e4af821443de87cfeeac4bfa32d93cb35adce44f003520d227e11b6e6f78767845e7259d05c5

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

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
memory/1612-10-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/1612-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/1612-1-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2248-26-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/2248-5-0x0000000000820000-0x0000000000878000-memory.dmp

Filesize
352KB

Download
memory/2248-6-0x0000000074880000-0x0000000074F6E000-memory.dmp

Filesize
6.9MB

Download
memory/2248-7-0x0000000000720000-0x0000000000760000-memory.dmp

Filesize
256KB

Download
memory/2248-8-0x00000000003D0000-0x00000000003D8000-memory.dmp

Filesize
32KB

Download
memory/2248-9-0x0000000002080000-0x00000000020AC000-memory.dmp

Filesize
176KB

Download
memory/2968-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2968-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-40-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-42-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-44-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-46-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-48-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-50-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-52-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2968-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads