remcos | d17b9989d23a1e7911169a23585562792ce087feb28387510626f919f9b37c7f

General

Target

870c36a05bcb3ab0f6ed1a30c30e5193.exe
Size

1.4MB
MD5

870c36a05bcb3ab0f6ed1a30c30e5193
SHA1

0d93d4443ed74c0621dd016377e9674a5653dca2
SHA256

d17b9989d23a1e7911169a23585562792ce087feb28387510626f919f9b37c7f
SHA512

a39df282ec7ba83fc3c77a5c5fdb43662eba79fa5e9dbf6d71fbe45f9beca7c17727aca6d1149d74b522386bf4e251a56b051b95438dee07c2c1c45600ca8a10
SSDEEP

24576:s6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6EN:zY9UORVOM1jJHzaiape0hsABFRJch6LZ

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/2148-9-0x0000000000730000-0x000000000075C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2148 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1680 cmd.exe

pid	process
2148	test.exe

pid	process
1680	cmd.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2332-1-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2332-31-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2332-28-0x0000000000400000-0x00000000006F1000-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 2148 set thread context of 2656 2148 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

2564 schtasks.exe

description	pid	process	target process
PID 2148 set thread context of 2656	2148	test.exe	vbc.exe

pid	process
2564	schtasks.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

870c36a05bcb3ab0f6ed1a30c30e5193.execmd.exetest.exe

description	pid	process	target process
PID 2332 wrote to memory of 1680	2332	870c36a05bcb3ab0f6ed1a30c30e5193.exe	cmd.exe
PID 2332 wrote to memory of 1680	2332	870c36a05bcb3ab0f6ed1a30c30e5193.exe	cmd.exe
PID 2332 wrote to memory of 1680	2332	870c36a05bcb3ab0f6ed1a30c30e5193.exe	cmd.exe
PID 2332 wrote to memory of 1680	2332	870c36a05bcb3ab0f6ed1a30c30e5193.exe	cmd.exe
PID 1680 wrote to memory of 2148	1680	cmd.exe	test.exe
PID 1680 wrote to memory of 2148	1680	cmd.exe	test.exe
PID 1680 wrote to memory of 2148	1680	cmd.exe	test.exe
PID 1680 wrote to memory of 2148	1680	cmd.exe	test.exe
PID 2148 wrote to memory of 2564	2148	test.exe	schtasks.exe
PID 2148 wrote to memory of 2564	2148	test.exe	schtasks.exe
PID 2148 wrote to memory of 2564	2148	test.exe	schtasks.exe
PID 2148 wrote to memory of 2564	2148	test.exe	schtasks.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe
PID 2148 wrote to memory of 2656	2148	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\870c36a05bcb3ab0f6ed1a30c30e5193.exe
"C:\Users\Admin\AppData\Local\Temp\870c36a05bcb3ab0f6ed1a30c30e5193.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2332

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2148

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2E51.tmp"
4⤵
- Creates scheduled task(s)
PID:2564

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2656

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\tmp2E51.tmp
Filesize
1KB

MD5
4e3affe5386ce9b9e4622f1be24c9da6

SHA1
ed90e903d3d95ded767bc06c885e752393cd42e1

SHA256
da340990225dfc4daa591deeb4c5e3880329bcb7faf2b407e89dac0dcbd0a3a0

SHA512
84b9e0231de0ae525b608616fa36e3fe34db5ed873da30b5e063d61806b1981576826f1d8d1106c8914df5943b5b62aa126a0779177c024516e659905c8067ab

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

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
memory/2148-27-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2148-5-0x0000000001340000-0x0000000001398000-memory.dmp

Filesize
352KB

Download
memory/2148-6-0x00000000746F0000-0x0000000074DDE000-memory.dmp

Filesize
6.9MB

Download
memory/2148-7-0x00000000004B0000-0x00000000004F0000-memory.dmp

Filesize
256KB

Download
memory/2148-8-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download
memory/2148-9-0x0000000000730000-0x000000000075C000-memory.dmp

Filesize
176KB

Download
memory/2332-1-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2332-28-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2332-31-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2656-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-17-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2656-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-41-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-45-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-47-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-51-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-53-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-55-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2656-57-0x0000000000400000-0x0000000000420000-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