remcos | a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce

Analysis

max time kernel
149s
max time network
144s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
16-09-2024 05:32

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General

Target

a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
Size

903KB
MD5

51f72049f9a159ebe2d0703fa2e9e898
SHA1

8c85bdf7ceff32613cf219da176808ad8a8a8b99
SHA256

a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce
SHA512

fb690d21a2a4a7167c9cf6932a20772db4431bff831e9aafbf502913cd84523f99a002a6ae88383d2cfe6b80e89242ebf8448b1ef563bfce322edb0afc42e168
SSDEEP

24576:RUN2k1xt4uIDiHiNan2k95YYzBQak2P44b3i64I+xrST9i:RU8MfI8uan2kPTz7p9b5VTk

Score

10^/10

remcos rhymer discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

Rhymer

64.188.12.208:5500

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-WW3VS5
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2860	powershell.exe
2604	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 696 set thread context of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38

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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
2860	powershell.exe
2604	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2604	powershell.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 2860	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	31
PID 696 wrote to memory of 2860	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	31
PID 696 wrote to memory of 2860	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	31
PID 696 wrote to memory of 2860	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	31
PID 696 wrote to memory of 2604	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	33
PID 696 wrote to memory of 2604	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	33
PID 696 wrote to memory of 2604	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	33
PID 696 wrote to memory of 2604	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	33
PID 696 wrote to memory of 2592	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	35
PID 696 wrote to memory of 2592	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	35
PID 696 wrote to memory of 2592	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	35
PID 696 wrote to memory of 2592	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	35
PID 696 wrote to memory of 2104	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	37
PID 696 wrote to memory of 2104	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	37
PID 696 wrote to memory of 2104	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	37
PID 696 wrote to memory of 2104	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	37
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38
PID 696 wrote to memory of 2616	696	a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe	38

C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
"C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:696
- 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\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2860
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BAjeeg.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2604
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BAjeeg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7EFF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2592
- C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
  "C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe"
  2⤵
  PID:2104
- C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe
  "C:\Users\Admin\AppData\Local\Temp\a3b8b22001bd2cdb7235143b52225c2063d33b63a87e44cba0dae647c49be7ce.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

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

C:\Users\Admin\AppData\Local\Temp\tmp7EFF.tmp

Filesize
1KB

MD5
4d31843a301ac9fab45f3b47c5f35062

SHA1
9bb5838a4d4f2f836c5b227a975eadc29a1708c0

SHA256
561ebfb216b47ce96025411a92eae38d45ebfbbe2d3aff91a633590285d74078

SHA512
b2f70b9483469f3737261ade85a39a2a346eb795ea20661424d8f0f0f9acf06cc868238e1911be04e1a9fdf39d2f38fe20a32c2eed9d47c71a30931efd4178d6

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
c5e8d17af27c4d5f6f2a5762f86e24a4

SHA1
20fab7b33f09b8d8157fab9963c75d149074f677

SHA256
fa8ecaac5457d3c6ef4e336d36f023d0f11d44a80fff878da2ccdb2314963cf8

SHA512
ec38a465e151c4801db7ad70afbc69c9d88fc9af26d808f546b4d0bffb31c6ae2e73484beafa1b58d14dc5e9305fcd42a56905b293232ef0331169ea3c07d5bf

Download Submit
memory/696-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/696-1-0x0000000001160000-0x0000000001246000-memory.dmp

Filesize
920KB

Download
memory/696-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/696-3-0x0000000005010000-0x00000000050E6000-memory.dmp

Filesize
856KB

Download
memory/696-4-0x00000000002E0000-0x00000000002EE000-memory.dmp

Filesize
56KB

Download
memory/696-5-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/696-6-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/696-7-0x0000000005440000-0x0000000005500000-memory.dmp

Filesize
768KB

Download
memory/696-40-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2616-39-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-34-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-51-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2616-54-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download