remcos | c44506fe6e1ede5a104008755abf5b6ace51f1a84ad656a2dccc7f2c39c0eca2

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16-09-2024 05:26

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General

Target

Setup.exe
Size

2.0MB
MD5

371c165e3e3c1a000051b78d7b0e7e79
SHA1

2a2ecbbd4840c486b3507a18307369336ec5a1aa
SHA256

5ae3838d77c2102766538f783d0a4b4205e7d2cdba4e0ad2ab332dc8ab32fea9
SHA512

4e6bd3f85c71a8ff0db1e92675295d5bbd0ee8cf24d4df4150a922e9c25fa1f7116263ac4e55c9a9420416fd0388db593c1fe43d22d0a8d25caa20eeb13f5080
SSDEEP

24576:fsLSdP5XOFS5DbCVVtBF8SIIa0awy+qW5M8hbGY7WVaQX/VjjFD7YpmTfWD3B7jn:ELmVOFUK1JIIa0awN5d7WVaQX1T+z9D

Score

10^/10

remcos fudstub discovery rat

Malware Config

Extracted

Family

remcos

Botnet

fudstub

213.5.130.58:443

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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
Crashreport
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-0H4R64
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3444 set thread context of 3016	3444	Setup.exe	82

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 3 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Setup.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3444	Setup.exe
3444	Setup.exe
3016	cmd.exe
3016	cmd.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
3444	Setup.exe
3016	cmd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3444 wrote to memory of 3016	3444	Setup.exe	82
PID 3444 wrote to memory of 3016	3444	Setup.exe	82
PID 3444 wrote to memory of 3016	3444	Setup.exe	82
PID 3444 wrote to memory of 3016	3444	Setup.exe	82
PID 3016 wrote to memory of 1436	3016	cmd.exe	92
PID 3016 wrote to memory of 1436	3016	cmd.exe	92
PID 3016 wrote to memory of 1436	3016	cmd.exe	92
PID 3016 wrote to memory of 1436	3016	cmd.exe	92
PID 3016 wrote to memory of 1436	3016	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\Setup.exe
"C:\Users\Admin\AppData\Local\Temp\Setup.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\SysWOW64\cmd.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3016
- - C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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\44b09bad

Filesize
1.2MB

MD5
1c9430fea065af5b4de9e27f0cf25829

SHA1
a479631ddef6784ecf3e9a475a414eae68d88290

SHA256
d6598f4326436e19e37fe0d1910c25ecbf549020d87656aa9b8ab10ee30d1581

SHA512
90b3db2e26d633bc4a913c999c992e9bd9a7dc94b920f9a221f7dfa4094b7f1560dba99ca595b81010e8ee470bb9aab106bdb9715bab91578b0cd677f2bb3e16

Download Submit
memory/1436-40-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-39-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-47-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-45-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-44-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-43-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-42-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-41-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-37-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-36-0x00000000007D3000-0x00000000007DB000-memory.dmp

Filesize
32KB

Download
memory/1436-33-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-32-0x00007FFD85A70000-0x00007FFD85C65000-memory.dmp

Filesize
2.0MB

Download
memory/1436-46-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/1436-48-0x0000000000600000-0x0000000000683000-memory.dmp

Filesize
524KB

Download
memory/3016-26-0x00007FFD85A70000-0x00007FFD85C65000-memory.dmp

Filesize
2.0MB

Download
memory/3016-28-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3016-16-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3016-31-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3016-29-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3444-21-0x0000000057800000-0x0000000057812000-memory.dmp

Filesize
72KB

Download
memory/3444-18-0x0000000059800000-0x000000005986E000-memory.dmp

Filesize
440KB

Download
memory/3444-24-0x0000000061E00000-0x0000000061ECA000-memory.dmp

Filesize
808KB

Download
memory/3444-17-0x0000000000400000-0x000000000064B000-memory.dmp

Filesize
2.3MB

Download
memory/3444-1-0x00007FFD85A70000-0x00007FFD85C65000-memory.dmp

Filesize
2.0MB

Download
memory/3444-0-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3444-20-0x0000000057000000-0x000000005703F000-memory.dmp

Filesize
252KB

Download
memory/3444-23-0x0000000050310000-0x0000000050349000-memory.dmp

Filesize
228KB

Download
memory/3444-22-0x0000000050120000-0x000000005030D000-memory.dmp

Filesize
1.9MB

Download
memory/3444-14-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3444-19-0x0000000050000000-0x0000000050116000-memory.dmp

Filesize
1.1MB

Download
memory/3444-13-0x0000000074B10000-0x0000000074C8B000-memory.dmp

Filesize
1.5MB

Download
memory/3444-12-0x0000000074B22000-0x0000000074B24000-memory.dmp

Filesize
8KB

Download