remcos | a7654b625ae3d62d56a2a9fe2e3317c8970cdc7ffc5862fbb557da03ac2a8fb1

General

Target

368c6a0cf3419a57c54f3c36a0411ae4.exe
Size

1.4MB
MD5

368c6a0cf3419a57c54f3c36a0411ae4
SHA1

94e5428209d02605de40464f5eebec2f5f8f9e51
SHA256

a7654b625ae3d62d56a2a9fe2e3317c8970cdc7ffc5862fbb557da03ac2a8fb1
SHA512

ccace697e4e265871658f552b3ece1fe75ab1c0f089d8f32681f2dbf44a33e78b021241fd428d213b9a19abec62c5401d32b08f22fbdccb543a1112af31c4e8d
SSDEEP

24576:d6yJMY9UFoRDhkeYM1jJR97zUbia9JVe0hs5WfBiERJchVML1bT6El:MY9UORVOM1jJHzaiape0hsABFRJch6Lh

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/2080-12-0x0000000005480000-0x00000000054AC000-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation test.exe
Executes dropped EXE 1 IoCs

Processes:

test.exe

pid process

2080 test.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	test.exe

pid	process
2080	test.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3784-0-0x0000000000400000-0x00000000006F2000-memory.dmp	upx
behavioral2/memory/3784-27-0x0000000000400000-0x00000000006F2000-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 2080 set thread context of 2676 2080 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

632 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

test.exe

pid process

2080 test.exe
2080 test.exe
2080 test.exe
2080 test.exe
2080 test.exe
2080 test.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

test.exe

description pid process

Token: SeDebugPrivilege 2080 test.exe

description	pid	process	target process
PID 2080 set thread context of 2676	2080	test.exe	vbc.exe

pid	process
632	schtasks.exe

pid	process
2080	test.exe
2080	test.exe
2080	test.exe
2080	test.exe
2080	test.exe
2080	test.exe

description	pid	process
Token: SeDebugPrivilege	2080	test.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

368c6a0cf3419a57c54f3c36a0411ae4.execmd.exetest.exe

description	pid	process	target process
PID 3784 wrote to memory of 904	3784	368c6a0cf3419a57c54f3c36a0411ae4.exe	cmd.exe
PID 3784 wrote to memory of 904	3784	368c6a0cf3419a57c54f3c36a0411ae4.exe	cmd.exe
PID 3784 wrote to memory of 904	3784	368c6a0cf3419a57c54f3c36a0411ae4.exe	cmd.exe
PID 904 wrote to memory of 2080	904	cmd.exe	test.exe
PID 904 wrote to memory of 2080	904	cmd.exe	test.exe
PID 904 wrote to memory of 2080	904	cmd.exe	test.exe
PID 2080 wrote to memory of 632	2080	test.exe	schtasks.exe
PID 2080 wrote to memory of 632	2080	test.exe	schtasks.exe
PID 2080 wrote to memory of 632	2080	test.exe	schtasks.exe
PID 2080 wrote to memory of 1560	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 1560	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 1560	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 4320	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 4320	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 4320	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe
PID 2080 wrote to memory of 2676	2080	test.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\368c6a0cf3419a57c54f3c36a0411ae4.exe
"C:\Users\Admin\AppData\Local\Temp\368c6a0cf3419a57c54f3c36a0411ae4.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3784

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c test.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:904

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:2080

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXAlJeWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA057.tmp"
4⤵
- Creates scheduled task(s)
PID:632

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:1560

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:4320

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
4⤵
PID:2676

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\tmpA057.tmp
Filesize
1KB

MD5
4f10ca0f03d645a0d35ab843dc99edb8

SHA1
4d72f9700d2838bd851d8696937f4d46dd3f3782

SHA256
b515159d9896392279b48ebf6af3a32d5355b5a6dd8a7a02b73d03d9f97aa134

SHA512
a877e27a4cb78543b888d9f7d023d7f1007b00eb4dfbe57dea8f2bb144c0938e94ce7c7e61f08f54990f8868ac5e85a724db281f5c96c03340c70c43e1b6abea

Download Submit
memory/2080-25-0x0000000074DD0000-0x0000000075580000-memory.dmp

Filesize
7.7MB

Download
memory/2080-6-0x0000000074DD0000-0x0000000075580000-memory.dmp

Filesize
7.7MB

Download
memory/2080-5-0x00000000006F0000-0x0000000000748000-memory.dmp

Filesize
352KB

Download
memory/2080-7-0x00000000054E0000-0x0000000005A84000-memory.dmp

Filesize
5.6MB

Download
memory/2080-8-0x0000000005010000-0x00000000050A2000-memory.dmp

Filesize
584KB

Download
memory/2080-9-0x0000000005270000-0x0000000005280000-memory.dmp

Filesize
64KB

Download
memory/2080-10-0x00000000051B0000-0x00000000051BA000-memory.dmp

Filesize
40KB

Download
memory/2080-11-0x00000000051A0000-0x00000000051A8000-memory.dmp

Filesize
32KB

Download
memory/2080-12-0x0000000005480000-0x00000000054AC000-memory.dmp

Filesize
176KB

Download
memory/2080-13-0x0000000005C30000-0x0000000005CCC000-memory.dmp

Filesize
624KB

Download
memory/2676-20-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-49-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-43-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-30-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-37-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2676-39-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3784-27-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download
memory/3784-0-0x0000000000400000-0x00000000006F2000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads