remcos | f47bf9cecb2d88cfb8fe926952dee0a3294af761db1a68cf90c0a1bf2e109ce4

General

Target

79375b36a2e44df15bc37ef4ae3e8b9a.exe
Size

1.4MB
MD5

79375b36a2e44df15bc37ef4ae3e8b9a
SHA1

54c25f1d91470df0e3a5d08d1bd9876d9ddb20f1
SHA256

f47bf9cecb2d88cfb8fe926952dee0a3294af761db1a68cf90c0a1bf2e109ce4
SHA512

8500eba854f696ef5fd6ae2b0cd001883803f2db3f42ec0cf49b40da725b37608f26d85e04405a2d43f089c712470a6255ad46a702a98a33b775eaf33ca8b95d
SSDEEP

24576:W6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6E7:BY9UORVOM1jJHzaiape0hsABFRJch6Lv

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/2948-9-0x0000000000970000-0x000000000099C000-memory.dmp	rezer0

Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2948 test.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1420 cmd.exe

pid	process
2948	test.exe

pid	process
1420	cmd.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2460-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2460-10-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral1/memory/2460-31-0x0000000000400000-0x00000000006F1000-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 2948 set thread context of 2844 2948 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

2848 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

test.exe

pid process

2948 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2948 test.exe

description	pid	process	target process
PID 2948 set thread context of 2844	2948	test.exe	vbc.exe

pid	process
2848	schtasks.exe

pid	process
2948	test.exe

description	pid	process
Token: SeDebugPrivilege	2948	test.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

79375b36a2e44df15bc37ef4ae3e8b9a.execmd.exetest.exe

description	pid	process	target process
PID 2460 wrote to memory of 1420	2460	79375b36a2e44df15bc37ef4ae3e8b9a.exe	cmd.exe
PID 2460 wrote to memory of 1420	2460	79375b36a2e44df15bc37ef4ae3e8b9a.exe	cmd.exe
PID 2460 wrote to memory of 1420	2460	79375b36a2e44df15bc37ef4ae3e8b9a.exe	cmd.exe
PID 2460 wrote to memory of 1420	2460	79375b36a2e44df15bc37ef4ae3e8b9a.exe	cmd.exe
PID 1420 wrote to memory of 2948	1420	cmd.exe	test.exe
PID 1420 wrote to memory of 2948	1420	cmd.exe	test.exe
PID 1420 wrote to memory of 2948	1420	cmd.exe	test.exe
PID 1420 wrote to memory of 2948	1420	cmd.exe	test.exe
PID 2948 wrote to memory of 2848	2948	test.exe	schtasks.exe
PID 2948 wrote to memory of 2848	2948	test.exe	schtasks.exe
PID 2948 wrote to memory of 2848	2948	test.exe	schtasks.exe
PID 2948 wrote to memory of 2848	2948	test.exe	schtasks.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe
PID 2948 wrote to memory of 2844	2948	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\79375b36a2e44df15bc37ef4ae3e8b9a.exe
"C:\Users\Admin\AppData\Local\Temp\79375b36a2e44df15bc37ef4ae3e8b9a.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2460

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1420

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:2948

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6C2B.tmp"
4⤵
- Creates scheduled task(s)
PID:2848

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2844

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\test.exe
Filesize
330KB

MD5
261aa73f93c90dcec0c36a51cb9b5dee

SHA1
b0c41e06cd2ded81706820423db40bf8fea2c957

SHA256
ae160b749914bd56aecbcf43d56a59bde2069a145682b2911fe50c6adabe1b54

SHA512
7b90335b4a7db7b5056f6d60db642754038dc544bd2c1f82e68b1f8e339bf70227f0c08d157b4ca1004448fab7d109f0239196f242d0edeab978de9025a3c0ed

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6C2B.tmp
Filesize
1KB

MD5
902952c50cfbfe65e3aedd0f73188ca3

SHA1
1a139d2beb98d43abdc66123120d42ecc195254e

SHA256
f85ff75e6ce28d6c17b144ab49b835ab17f1f9608b815bcebec097321acc512c

SHA512
e636980a73540141f658112bdc0189d8471692eaf0af191a131676adf4a79a2f08a2d7fa5c7c7b23cdb1f63728f4ea39c1e66ef5336e8f8e9be2440f8188b772

Download Submit
memory/2460-10-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2460-31-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2460-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/2844-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-41-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-57-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-55-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-16-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-21-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-24-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2844-25-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-27-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-53-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-51-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-47-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2844-45-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2948-9-0x0000000000970000-0x000000000099C000-memory.dmp

Filesize
176KB

Download
memory/2948-5-0x0000000000E60000-0x0000000000EB8000-memory.dmp

Filesize
352KB

Download
memory/2948-29-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-6-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-7-0x0000000004D10000-0x0000000004D50000-memory.dmp

Filesize
256KB

Download
memory/2948-8-0x0000000000210000-0x0000000000218000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads