remcos | c1411695a46008567ed81c474298a6cade2e743d50019acb46407ed66cb11b0e

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-02-2025 09:58

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General

Target

libiconv-2.dll
Size

2.4MB
MD5

02aaf0ef4140a80669e21c35547e0520
SHA1

8949f73b8ef36037f80a6b54d1f0280ac87647fb
SHA256

adacf7b709443ec0e4f479c33a6d9101f55d342e1b517c048f5440cd0862b76f
SHA512

1f5baeb5651632831836e02a28a2cfcc281f59943b89cf115bdf4fd98daf2752e238de6623e3336611d36d64b15bef1225a1921d17bd94678bc9895bfaa7b6a7
SSDEEP

49152:8ymzJaUsHOsxGYPJ1xNIsCFOXGCaDiO6eadE1MRvk/ATlEHS9:+Ybxqw+H

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

bangerr.duckdns.org:1012

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-Z95DP4
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
Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2616	2680	rundll32.exe	39

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\RootServices	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	wmplayer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	rundll32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2796	2680	rundll32.exe	30
PID 2680 wrote to memory of 2708	2680	rundll32.exe	31
PID 2680 wrote to memory of 2708	2680	rundll32.exe	31
PID 2680 wrote to memory of 2708	2680	rundll32.exe	31
PID 2680 wrote to memory of 2708	2680	rundll32.exe	31
PID 2680 wrote to memory of 2284	2680	rundll32.exe	32
PID 2680 wrote to memory of 2284	2680	rundll32.exe	32
PID 2680 wrote to memory of 2284	2680	rundll32.exe	32
PID 2680 wrote to memory of 2284	2680	rundll32.exe	32
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2704	2680	rundll32.exe	33
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2608	2680	rundll32.exe	34
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 2896	2680	rundll32.exe	35
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 1532	2680	rundll32.exe	36
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37
PID 2680 wrote to memory of 2624	2680	rundll32.exe	37

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\libiconv-2.dll,#1
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:2796
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:2708
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  PID:2284
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2704
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
  2⤵
  PID:2608
- C:\Windows\System32\calc.exe
  "C:\Windows\System32\calc.exe"
  2⤵
  PID:2896
- C:\Windows\System32\svchost.exe
  "C:\Windows\System32\svchost.exe"
  2⤵
  PID:1532
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe"
  2⤵
  PID:2624
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:3044
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.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

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/2616-58-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2616-63-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2616-62-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2616-61-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2616-60-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2616-57-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-0-0x00000000001C0000-0x00000000001D0000-memory.dmp

Filesize
64KB

Download
memory/2796-7-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2796-2-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2796-3-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2796-6-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2796-4-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/2796-1-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download