remcos | 2ada77612f68d343b4bcf228680b62ec266d00475446059729ce9ab7c68a154b

General

Target

d147fad9c249b2817d91ea77c88be2d4.exe
Size

1.4MB
MD5

d147fad9c249b2817d91ea77c88be2d4
SHA1

522d1bfaecf5180732c361fce27117e68e2f1ac3
SHA256

2ada77612f68d343b4bcf228680b62ec266d00475446059729ce9ab7c68a154b
SHA512

9daba4ceb7f2c4d2b1943528402266fede9984a24d1435774be8f25159817de9a1374faf78aefd0e365aaba853bf319717360fb02ef36566073d6d770166247b
SSDEEP

24576:/6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6ES:yY9UORVOM1jJHzaiape0hsABFRJch6Lm

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/5096-12-0x0000000005D00000-0x0000000005D2C000-memory.dmp	rezer0

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

test.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation test.exe
Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

5096 test.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	test.exe

pid	process
5096	test.exe

UPX packed file 3 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4816-0-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/4816-14-0x0000000000400000-0x00000000006F1000-memory.dmp	upx
behavioral2/memory/4816-27-0x0000000000400000-0x00000000006F1000-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 5096 set thread context of 872 5096 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

4416 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

test.exe

pid process

5096 test.exe
5096 test.exe
5096 test.exe
5096 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 5096 test.exe

description	pid	process	target process
PID 5096 set thread context of 872	5096	test.exe	vbc.exe

pid	process
4416	schtasks.exe

pid	process
5096	test.exe
5096	test.exe
5096	test.exe
5096	test.exe

description	pid	process
Token: SeDebugPrivilege	5096	test.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

d147fad9c249b2817d91ea77c88be2d4.execmd.exetest.exe

description	pid	process	target process
PID 4816 wrote to memory of 2820	4816	d147fad9c249b2817d91ea77c88be2d4.exe	cmd.exe
PID 4816 wrote to memory of 2820	4816	d147fad9c249b2817d91ea77c88be2d4.exe	cmd.exe
PID 4816 wrote to memory of 2820	4816	d147fad9c249b2817d91ea77c88be2d4.exe	cmd.exe
PID 2820 wrote to memory of 5096	2820	cmd.exe	test.exe
PID 2820 wrote to memory of 5096	2820	cmd.exe	test.exe
PID 2820 wrote to memory of 5096	2820	cmd.exe	test.exe
PID 5096 wrote to memory of 4416	5096	test.exe	schtasks.exe
PID 5096 wrote to memory of 4416	5096	test.exe	schtasks.exe
PID 5096 wrote to memory of 4416	5096	test.exe	schtasks.exe
PID 5096 wrote to memory of 2772	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 2772	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 2772	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe
PID 5096 wrote to memory of 872	5096	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\d147fad9c249b2817d91ea77c88be2d4.exe
"C:\Users\Admin\AppData\Local\Temp\d147fad9c249b2817d91ea77c88be2d4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4816

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:2820

C:\Users\Admin\AppData\Local\Temp\test.exe
test.exe
3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5096

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5BAD.tmp"
4⤵
- Creates scheduled task(s)
PID:4416

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2772

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:872

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

Query Registry

1

T1012

System Information Discovery

2

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\tmp5BAD.tmp
Filesize
1KB

MD5
ba19599bc3dd015cdbdd364f6366848d

SHA1
2fe4b8f1f36dde8dd2771f5c12bbebae4e234d09

SHA256
697bba8374c5330aeb2dd8c896cb06fd51b6475a5cedfbaffb50dc816ff15bf7

SHA512
cbcd92eb3cb7da2253558c4114d9b7b4ba6409c019a198ecbf8f1642565b9c42ae32732efafb339cc585d97fa12eac2116dd6a938efd55f0b8b6c09805ab7b6d

Download Submit
memory/872-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-47-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-26-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/872-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4816-0-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/4816-14-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/4816-27-0x0000000000400000-0x00000000006F1000-memory.dmp

Filesize
2.9MB

Download
memory/5096-7-0x0000000005D80000-0x0000000006324000-memory.dmp

Filesize
5.6MB

Download
memory/5096-24-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/5096-13-0x00000000064E0000-0x000000000657C000-memory.dmp

Filesize
624KB

Download
memory/5096-6-0x00000000745D0000-0x0000000074D80000-memory.dmp

Filesize
7.7MB

Download
memory/5096-12-0x0000000005D00000-0x0000000005D2C000-memory.dmp

Filesize
176KB

Download
memory/5096-11-0x0000000005A30000-0x0000000005A38000-memory.dmp

Filesize
32KB

Download
memory/5096-10-0x0000000005A40000-0x0000000005A4A000-memory.dmp

Filesize
40KB

Download
memory/5096-9-0x0000000005AC0000-0x0000000005AD0000-memory.dmp

Filesize
64KB

Download
memory/5096-8-0x0000000005890000-0x0000000005922000-memory.dmp

Filesize
584KB

Download
memory/5096-5-0x0000000000E50000-0x0000000000EA8000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads