remcos | defbbd19d8e29a1ceefe5a1773f12aa9ef54acebc8ffc923fa8eb200e74f02bb

General

Target

Inquiry no. 1051_pdf.exe
Size

925KB
MD5

3cde006756a1b69ae3beb2b628b1d283
SHA1

063c8cf9cf108b562d883d5b420067fb24b37ecf
SHA256

de3d9df15379d0e7a810cff323d05d0c4e5f88856d240f3310097e494c54f9d0
SHA512

6c70633b18a733fade1efceb70ba2547566e1045781da50280f2b72a8e7b6fb6fd3aae5c870b9a7917975a0576bf35063039c89547c577e730c991c07dd1454e
SSDEEP

12288:YQ7kvDoQbr+npWPrUrmPsB9sColkOhvNCqCwe4cpq+ffGET6F8yTegNZV2TtA52b:YQo/CAoCPsPKhCwe4FOGET6FJSKb2Nz

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

eadzagba1.duckdns.org:4877

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-X3UMUO
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2436	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2152 set thread context of 2952	2152	Inquiry no. 1051_pdf.exe	32

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 4 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	Inquiry no. 1051_pdf.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	Inquiry no. 1051_pdf.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
2404	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2436	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2436	2152	Inquiry no. 1051_pdf.exe	28
PID 2152 wrote to memory of 2436	2152	Inquiry no. 1051_pdf.exe	28
PID 2152 wrote to memory of 2436	2152	Inquiry no. 1051_pdf.exe	28
PID 2152 wrote to memory of 2436	2152	Inquiry no. 1051_pdf.exe	28
PID 2152 wrote to memory of 2404	2152	Inquiry no. 1051_pdf.exe	30
PID 2152 wrote to memory of 2404	2152	Inquiry no. 1051_pdf.exe	30
PID 2152 wrote to memory of 2404	2152	Inquiry no. 1051_pdf.exe	30
PID 2152 wrote to memory of 2404	2152	Inquiry no. 1051_pdf.exe	30
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32
PID 2152 wrote to memory of 2952	2152	Inquiry no. 1051_pdf.exe	32

C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\tEYdryyOxcUotv.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2436
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tEYdryyOxcUotv" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC081.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2404
- C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry no. 1051_pdf.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2952

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC081.tmp

Filesize
1KB

MD5
5031c3120e8aba6d278376ada283750c

SHA1
cafee4e06d31ac69105854d1e26f2a2ec731f516

SHA256
df5e7c400cc24fd11dd4f7ee1b205ff7dbb9720699931f5d4cb14e79805e059d

SHA512
935f73c3d30f11212d63ab82a85b1619fcc230b26a466117128cb1545df49a53f3496a5c86fc5ff1f1c256505bcbcbb09f83df5567627cfec081dcc40df27d40

Download Submit
memory/2152-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2152-1-0x0000000000FA0000-0x000000000108C000-memory.dmp

Filesize
944KB

Download
memory/2152-2-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2152-3-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2152-4-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/2152-5-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2152-6-0x00000000051A0000-0x0000000005260000-memory.dmp

Filesize
768KB

Download
memory/2152-34-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2952-18-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-36-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2952-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-24-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-31-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-35-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-32-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-37-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-38-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-41-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-42-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-44-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-43-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-48-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2952-50-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads