remcos | e87c654b129af4a7012d6191873a5baaa3d122902bdeae57e110844be145b44e

General

Target

Enquiry #2601.exe
Size

1.1MB
MD5

1539be715cb0839ba641cb081ab4f4af
SHA1

f45c233301c64df2a58a08211e78eaa5ff546a01
SHA256

e87c654b129af4a7012d6191873a5baaa3d122902bdeae57e110844be145b44e
SHA512

b8f7bbeea1acabaf644f055386f07d3c4f5588790e155948900aefc0185bb95a10e8e18997c5c8f4aa289f97f2f3269e399ff74e48388559fccb5543f3872106

Score

10^/10

remcos zara stub rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

zara stub

C2

185.140.53.178:2404

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-3B07AK
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
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Suspicious use of SetThreadContext 1 IoCs

Processes:

Enquiry #2601.exe

description pid process target process

PID 3380 set thread context of 616 3380 Enquiry #2601.exe Enquiry #2601.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exe

pid process

3784 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Enquiry #2601.exepowershell.exe

pid process

3380 Enquiry #2601.exe
3380 Enquiry #2601.exe
3228 powershell.exe
3228 powershell.exe
3228 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Enquiry #2601.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3380 Enquiry #2601.exe
Token: SeDebugPrivilege 3228 powershell.exe

description	pid	process	target process
PID 3380 set thread context of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe

pid	process
3784	schtasks.exe

pid	process
3380	Enquiry #2601.exe
3380	Enquiry #2601.exe
3228	powershell.exe
3228	powershell.exe
3228	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3380	Enquiry #2601.exe
Token: SeDebugPrivilege	3228	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Enquiry #2601.exe

description	pid	process	target process
PID 3380 wrote to memory of 3228	3380	Enquiry #2601.exe	powershell.exe
PID 3380 wrote to memory of 3228	3380	Enquiry #2601.exe	powershell.exe
PID 3380 wrote to memory of 3228	3380	Enquiry #2601.exe	powershell.exe
PID 3380 wrote to memory of 3784	3380	Enquiry #2601.exe	schtasks.exe
PID 3380 wrote to memory of 3784	3380	Enquiry #2601.exe	schtasks.exe
PID 3380 wrote to memory of 3784	3380	Enquiry #2601.exe	schtasks.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe
PID 3380 wrote to memory of 616	3380	Enquiry #2601.exe	Enquiry #2601.exe

C:\Users\Admin\AppData\Local\Temp\Enquiry #2601.exe
"C:\Users\Admin\AppData\Local\Temp\Enquiry #2601.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3380

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qevrNTaIPpVdf.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3228

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qevrNTaIPpVdf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp972B.tmp"
2⤵
- Creates scheduled task(s)
PID:3784

C:\Users\Admin\AppData\Local\Temp\Enquiry #2601.exe
"C:\Users\Admin\AppData\Local\Temp\Enquiry #2601.exe"
2⤵
PID:616

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp972B.tmp
MD5
ec8589ba28f579f8c86258fcaafb4e66

SHA1
0fed45c004c19be2684b925b8963a35acd6f730e

SHA256
94b670c13918b271a77650205d80aa4830587963eac00682f2b32b702f19d001

SHA512
36e627e304316ead60ebdbc4ab3da6b72f2dedd7f0ea8b23157abf7c562dd9ea5f65e7b5f34d49a482981c1d85bef750788d15a046f2da29686703ed1a7cbf20

Download Submit
memory/616-138-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/616-132-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/3228-141-0x00000000087E0000-0x0000000008856000-memory.dmp

Filesize
472KB

Download
memory/3228-136-0x0000000007EF0000-0x0000000007F56000-memory.dmp

Filesize
408KB

Download
memory/3228-357-0x0000000008540000-0x0000000008548000-memory.dmp

Filesize
32KB

Download
memory/3228-352-0x0000000008550000-0x000000000856A000-memory.dmp

Filesize
104KB

Download
memory/3228-195-0x0000000007073000-0x0000000007074000-memory.dmp

Filesize
4KB

Download
memory/3228-128-0x0000000007080000-0x00000000070B6000-memory.dmp

Filesize
216KB

Download
memory/3228-158-0x0000000009BD0000-0x0000000009C64000-memory.dmp

Filesize
592KB

Download
memory/3228-131-0x0000000007072000-0x0000000007073000-memory.dmp

Filesize
4KB

Download
memory/3228-130-0x0000000007070000-0x0000000007071000-memory.dmp

Filesize
4KB

Download
memory/3228-157-0x0000000009A00000-0x0000000009AA5000-memory.dmp

Filesize
660KB

Download
memory/3228-133-0x00000000076F0000-0x0000000007D18000-memory.dmp

Filesize
6.2MB

Download
memory/3228-134-0x0000000007640000-0x0000000007662000-memory.dmp

Filesize
136KB

Download
memory/3228-135-0x0000000007E10000-0x0000000007E76000-memory.dmp

Filesize
408KB

Download
memory/3228-152-0x00000000098A0000-0x00000000098BE000-memory.dmp

Filesize
120KB

Download
memory/3228-137-0x0000000008180000-0x00000000084D0000-memory.dmp

Filesize
3.3MB

Download
memory/3228-151-0x000000007EBC0000-0x000000007EBC1000-memory.dmp

Filesize
4KB

Download
memory/3228-139-0x00000000073A0000-0x00000000073BC000-memory.dmp

Filesize
112KB

Download
memory/3228-140-0x0000000008590000-0x00000000085DB000-memory.dmp

Filesize
300KB

Download
memory/3228-150-0x00000000098C0000-0x00000000098F3000-memory.dmp

Filesize
204KB

Download
memory/3380-118-0x00000000004F0000-0x000000000060A000-memory.dmp

Filesize
1.1MB

Download
memory/3380-119-0x0000000005420000-0x000000000591E000-memory.dmp

Filesize
5.0MB

Download
memory/3380-122-0x0000000005330000-0x000000000533C000-memory.dmp

Filesize
48KB

Download
memory/3380-120-0x0000000004E50000-0x0000000004EE2000-memory.dmp

Filesize
584KB

Download
memory/3380-121-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/3380-125-0x0000000007990000-0x0000000007A56000-memory.dmp

Filesize
792KB

Download
memory/3380-124-0x0000000007780000-0x000000000781C000-memory.dmp

Filesize
624KB

Download
memory/3380-123-0x0000000004F20000-0x000000000541E000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads