remcos | f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97

Analysis

max time kernel
148s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-01-2025 09:17

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General

Target

preliminary drawing.pif.exe
Size

973KB
MD5

ecad35aa0a2834edde088dba8063486d
SHA1

f09ff2154b1542326d63c1eae67a1db0d5dd3571
SHA256

f4da65fff4d9b2420e2375ce736d02b0dab3e4776115346c5219891ea8fc3c97
SHA512

0aea41973d5ec10e93d423985ef5a4376c43efe8eaf3b9bc353decddb62339b1f1d9e962eafa53809a75a5e2be43fdfb432f81a5a9556cdb826a440e7f33174e
SSDEEP

24576:EReyAYaI69Kl3u2FRFhlF4guHGTpSD4wHCKywRmOD:EReyAk3uGTvluupQ4wHChnc

Score

10^/10

remcos rem discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

Rem

87.120.127.120:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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-NWAKMX
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
Remcos family
remcos

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2736	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 2600	2244	preliminary drawing.pif.exe	35

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	preliminary drawing.pif.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	preliminary drawing.pif.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2244	preliminary drawing.pif.exe
2244	preliminary drawing.pif.exe
2244	preliminary drawing.pif.exe
2244	preliminary drawing.pif.exe
2244	preliminary drawing.pif.exe
2244	preliminary drawing.pif.exe
2736	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2244	preliminary drawing.pif.exe
Token: SeDebugPrivilege	2736	powershell.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2736	2244	preliminary drawing.pif.exe	30
PID 2244 wrote to memory of 2736	2244	preliminary drawing.pif.exe	30
PID 2244 wrote to memory of 2736	2244	preliminary drawing.pif.exe	30
PID 2244 wrote to memory of 2736	2244	preliminary drawing.pif.exe	30
PID 2244 wrote to memory of 2392	2244	preliminary drawing.pif.exe	31
PID 2244 wrote to memory of 2392	2244	preliminary drawing.pif.exe	31
PID 2244 wrote to memory of 2392	2244	preliminary drawing.pif.exe	31
PID 2244 wrote to memory of 2392	2244	preliminary drawing.pif.exe	31
PID 2244 wrote to memory of 2856	2244	preliminary drawing.pif.exe	33
PID 2244 wrote to memory of 2856	2244	preliminary drawing.pif.exe	33
PID 2244 wrote to memory of 2856	2244	preliminary drawing.pif.exe	33
PID 2244 wrote to memory of 2856	2244	preliminary drawing.pif.exe	33
PID 2244 wrote to memory of 2764	2244	preliminary drawing.pif.exe	34
PID 2244 wrote to memory of 2764	2244	preliminary drawing.pif.exe	34
PID 2244 wrote to memory of 2764	2244	preliminary drawing.pif.exe	34
PID 2244 wrote to memory of 2764	2244	preliminary drawing.pif.exe	34
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35
PID 2244 wrote to memory of 2600	2244	preliminary drawing.pif.exe	35

C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe
"C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2736
- C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe
  "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
  2⤵
  PID:2392
- C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe
  "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
  2⤵
  PID:2856
- C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe
  "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
  2⤵
  PID:2764
- C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe
  "C:\Users\Admin\AppData\Local\Temp\preliminary drawing.pif.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2244-23-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2244-1-0x0000000000190000-0x000000000028A000-memory.dmp

Filesize
1000KB

Download
memory/2244-2-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2244-3-0x0000000000580000-0x000000000059A000-memory.dmp

Filesize
104KB

Download
memory/2244-4-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2244-5-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2244-6-0x0000000005000000-0x00000000050C4000-memory.dmp

Filesize
784KB

Download
memory/2244-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2600-11-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-24-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-17-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2600-20-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-14-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-13-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-12-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-22-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-9-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-7-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-25-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-28-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-31-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-36-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2600-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download