remcos | b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67

General

Target

b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe
Size

3.3MB
MD5

483c61ca181ccbf249270b53d4fb7f1e
SHA1

6fbcba9ea186df3823f3b5e5834f2804673c6dc6
SHA256

b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67
SHA512

c4f63a4d30ce35d989e085e4ef4699308b686c8b5a2de8f71eb7ba8957b75fe96daac3d86764148c63e081e2d3e29960c4425e15eadd0c2884c89ef060441f92
SSDEEP

98304:7UDo0WoJfveUgbIAGCyerat5Tr2NwpHy2/l5CdnSQ:CWAXKbIRpiaDTaNES2//CdP

Score

10^/10

remcos data discovery rat

Malware Config

Extracted

Family

remcos

Botnet

Data

C2

185.156.175.35:19101

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-O34PIB
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AddInProcess32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe
224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2328	AddInProcess32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91
PID 224 wrote to memory of 2328	224	b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe	91

C:\Users\Admin\AppData\Local\Temp\b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe
"C:\Users\Admin\AppData\Local\Temp\b56ad4e991a92dafb41f0b1d7a08d5ff23673f360b880166cdaf67274861ed67.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2328

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
1ec2a1e07988c833e487980050791b2b

SHA1
3bbbaf0810757b23f10a1d89481906a2d14cd241

SHA256
efafbd11d832b14777a59a7834fb7b2388b6d4f665404f92a4288755d5167ac6

SHA512
0b0babfa93d074e2a81c6c4ab06cdfc08e572793459eddb115e70c81948b8e7d586519c0a254bf29afeeeaef0df53363490ecf245b8adaf8a8bce723889624b6

Download Submit
memory/224-14-0x0000000005C30000-0x0000000005C36000-memory.dmp

Filesize
24KB

Download
memory/224-1-0x0000000000B80000-0x0000000000ED6000-memory.dmp

Filesize
3.3MB

Download
memory/224-3-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/224-4-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/224-5-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/224-6-0x0000000009970000-0x0000000009C32000-memory.dmp

Filesize
2.8MB

Download
memory/224-7-0x00000000118B0000-0x0000000011E54000-memory.dmp

Filesize
5.6MB

Download
memory/224-8-0x0000000011300000-0x0000000011392000-memory.dmp

Filesize
584KB

Download
memory/224-9-0x0000000005D80000-0x0000000005D86000-memory.dmp

Filesize
24KB

Download
memory/224-10-0x0000000009C70000-0x0000000009C7A000-memory.dmp

Filesize
40KB

Download
memory/224-11-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/224-12-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/224-13-0x0000000005BF0000-0x0000000005C0A000-memory.dmp

Filesize
104KB

Download
memory/224-2-0x00000000053C0000-0x000000000545C000-memory.dmp

Filesize
624KB

Download
memory/224-0-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download
memory/224-23-0x0000000074DB0000-0x0000000075560000-memory.dmp

Filesize
7.7MB

Download
memory/2328-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-15-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-25-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2328-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

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