remcos | 678bea007fe0302874c28fa618e025066b93681f6b4747fef65992e69746cd77

General

Target

Purchase Order.exe
Size

1.1MB
MD5

d5261204d9c158b2bab4272f89f7df17
SHA1

11d82d35d6d5ef250b9cedf4d1f7cd98c0246546
SHA256

27e9c5e774bf0946e99a7f34d14ded33ca1c236765fbcfda83e234d70d15c652
SHA512

2710b22611fca8f90c38c715755a4ec34eec2fd176df45c68c4712d6a5b2803643f09bc05d9d08eb2981f4985355e4d1259eb7a42c8766aabc3f9f1badef4564
SSDEEP

24576:bzls/WgXN832qWivcsegk5vQ2F+wK9ADZyM6RGk:YN832q7vwrQW+wYl

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

2.58.56.182:2404

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-GM05WY
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 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2604	powershell.exe
2620	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2112	2672	Purchase Order.exe	37

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	Purchase Order.exe
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	Purchase Order.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
1636	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2604	powershell.exe
2620	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	powershell.exe
Token: SeDebugPrivilege	2620	powershell.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2604	2672	Purchase Order.exe	31
PID 2672 wrote to memory of 2604	2672	Purchase Order.exe	31
PID 2672 wrote to memory of 2604	2672	Purchase Order.exe	31
PID 2672 wrote to memory of 2604	2672	Purchase Order.exe	31
PID 2672 wrote to memory of 2620	2672	Purchase Order.exe	33
PID 2672 wrote to memory of 2620	2672	Purchase Order.exe	33
PID 2672 wrote to memory of 2620	2672	Purchase Order.exe	33
PID 2672 wrote to memory of 2620	2672	Purchase Order.exe	33
PID 2672 wrote to memory of 1636	2672	Purchase Order.exe	35
PID 2672 wrote to memory of 1636	2672	Purchase Order.exe	35
PID 2672 wrote to memory of 1636	2672	Purchase Order.exe	35
PID 2672 wrote to memory of 1636	2672	Purchase Order.exe	35
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37
PID 2672 wrote to memory of 2112	2672	Purchase Order.exe	37

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- 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\Purchase Order.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\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hYpnBXIk.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2620
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hYpnBXIk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp61BF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1636
- C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

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:\Users\Admin\AppData\Local\Temp\tmp61BF.tmp

Filesize
1KB

MD5
77b150b1e4f51ebd090503ed87ffb854

SHA1
7b3b6b2d18533c44d32a9e01dfa7ea205363845e

SHA256
d8af8386b87709206f138637f0e933d0de9303d12cadbea24efa67fe9f4b6296

SHA512
f4563238f6fa67c105e99ce7c5012eca9d6bcce86a68374fedcc449845dcfb54e73a65b0777beb623ce25c944c567aad9b8e778eea01c5e371d8c5ab56902919

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

Filesize
7KB

MD5
49cfc38971f0e07cd822b64b1dc25d15

SHA1
9b4c683fd054c5513885ef43e397d647ecb90d4b

SHA256
9cf10b3c186d002b2158c10887fa71d2fe862a495f789a19d2767cd8050884a7

SHA512
cb25394f013d91c07c44c70c8287d686dddb777e0ee596e7ffeb6fe933c482b187872e7e88bc97107dd533918ad89f5d7202cfcc2ea9a8d7e3686595666728b0

Download Submit
memory/2112-31-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2112-40-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-27-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-46-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-26-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-45-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-44-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-19-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-32-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-35-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-34-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-23-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-43-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-30-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-42-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-41-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-33-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-21-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-39-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-37-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2112-38-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2672-36-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-3-0x0000000000780000-0x000000000079E000-memory.dmp

Filesize
120KB

Download
memory/2672-6-0x0000000005190000-0x0000000005254000-memory.dmp

Filesize
784KB

Download
memory/2672-4-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

Filesize
4KB

Download
memory/2672-0-0x0000000073F2E000-0x0000000073F2F000-memory.dmp

Filesize
4KB

Download
memory/2672-1-0x0000000000110000-0x000000000022C000-memory.dmp

Filesize
1.1MB

Download
memory/2672-2-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-5-0x0000000073F20000-0x000000007460E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads