remcos | a1ddae9574bbeadd40b789fc8c7719b47c0d4bd8ed93abbd1d07f7e866ac40a6

Analysis

max time kernel
118s
max time network
128s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:14

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General

Target

98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
Size

1.7MB
MD5

2969ba68d7cb777ee4d1d94e3ca26b2e
SHA1

25b6ec11226afa942f8468d291a3989860acc934
SHA256

98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed
SHA512

3069d2eb6c2c6e907908de56470e89858757966f785fcaf77f8fa1b37f5b69f97778b5f9764d8bfbbe99031c3a859355457f54e2350173fda80f2cb0e3e45e77
SSDEEP

24576:0D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoI1:0p7E+QrFUBgq2d1

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
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

Executes dropped EXE 2 IoCs

pid	Process
2672	sbietrcl.exe
2748	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2748	2672	sbietrcl.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 2 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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
2672	sbietrcl.exe
2672	sbietrcl.exe
2672	sbietrcl.exe
2672	sbietrcl.exe
2672	sbietrcl.exe
2672	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
Token: SeDebugPrivilege	2672	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1404 wrote to memory of 2672	1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe	31
PID 1404 wrote to memory of 2672	1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe	31
PID 1404 wrote to memory of 2672	1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe	31
PID 1404 wrote to memory of 2672	1404	98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe	31
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32
PID 2672 wrote to memory of 2748	2672	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe
"C:\Users\Admin\AppData\Local\Temp\98d8bede7463eab3906d2bef4f619e0d387b872d36bc41df635c0458a9c87bed.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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\CabCEC.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.7MB

MD5
ebe1415cdbf5e3fa63932ead76604acc

SHA1
5bae06fc48dea053a83cf913e032f08294e6dca0

SHA256
ad62bd7de8c06130dc8b07341c2051dd9cdb6d1855488c15d12c74b557464e3c

SHA512
05654463254a0681734143aa5bda72ed98407dbe1b4e9bc4ced7aeb35ba74dca210ae82de820e314617061ad755cef58a2beb4dafc9a4dd1f6b2677dbe948df9

Download Submit
memory/1404-1-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1404-2-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1404-10-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1404-11-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1404-23-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/1404-0-0x0000000074CC1000-0x0000000074CC2000-memory.dmp

Filesize
4KB

Download
memory/1404-30-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-39-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-31-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-41-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-40-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2672-54-0x0000000074CC0000-0x000000007526B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-42-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2748-45-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2748-47-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2748-51-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2748-46-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2748-44-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download
memory/2748-43-0x00000000000C0000-0x00000000000D7000-memory.dmp

Filesize
92KB

Download