remcos | 34403bc1a7968916174684be3a8512ae99c732178be5137294a9293ae520eb89

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-08-2024 22:55

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General

Target

c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe
Size

457KB
MD5

c3f439cca47f6af6db6bd16f06902ba2
SHA1

abe133372c18ecffda452f7ac23e1783e3037213
SHA256

34403bc1a7968916174684be3a8512ae99c732178be5137294a9293ae520eb89
SHA512

26b39d42a584c4da5b5fa9380f7faa5d7ec407f81b2570b2ba61560a78d8e0fecd0c3fb07b65b6d3ce58ee46dcf28fbb8090f734903034c28cdb6170f47129fe
SSDEEP

12288:2xd8PIcO+kOmZ2xd8PIcO+kOmZVQVBQTBK8YuvIY:UMk+kbUMk+kbCVBSw8kY

Score

10^/10

remcos cashoutrtd 2019 defense_evasion discovery rat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

cashoutRTD 2019

cashout2018.ddnss.de:2018

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
dmw.exe
copy_folder
dmw
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
winloga
keylog_path
%AppData%
mouse_option
false
mutex
uytrrtyu-NJTBCR
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
dmw
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	audiodga.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe\:Zone.Identifier:$DATA	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.lnk	audiodga.exe

Executes dropped EXE 5 IoCs

pid	Process
228	audiodga.exe
3068	audiodga.exe
4164	audiodga.exe
1176	audiodga.exe
2928	audiodga.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 228 set thread context of 2928	228	audiodga.exe	116

Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 2 IoCs

When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

defense_evasion

SIP and Trust Provider Hijacking

T1553.003

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier	cmd.exe

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 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiodga.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audiodga.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

NTFS ADS 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe
Token: SeDebugPrivilege	228	audiodga.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2928	audiodga.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 3792	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	95
PID 1760 wrote to memory of 3792	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	95
PID 1760 wrote to memory of 3792	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	95
PID 1760 wrote to memory of 4000	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	97
PID 1760 wrote to memory of 4000	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	97
PID 1760 wrote to memory of 4000	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	97
PID 1760 wrote to memory of 4420	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	99
PID 1760 wrote to memory of 4420	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	99
PID 1760 wrote to memory of 4420	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	99
PID 1760 wrote to memory of 596	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	104
PID 1760 wrote to memory of 596	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	104
PID 1760 wrote to memory of 596	1760	c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe	104
PID 596 wrote to memory of 228	596	cmd.exe	106
PID 596 wrote to memory of 228	596	cmd.exe	106
PID 596 wrote to memory of 228	596	cmd.exe	106
PID 228 wrote to memory of 2472	228	audiodga.exe	107
PID 228 wrote to memory of 2472	228	audiodga.exe	107
PID 228 wrote to memory of 2472	228	audiodga.exe	107
PID 228 wrote to memory of 4036	228	audiodga.exe	109
PID 228 wrote to memory of 4036	228	audiodga.exe	109
PID 228 wrote to memory of 4036	228	audiodga.exe	109
PID 228 wrote to memory of 3068	228	audiodga.exe	113
PID 228 wrote to memory of 3068	228	audiodga.exe	113
PID 228 wrote to memory of 3068	228	audiodga.exe	113
PID 228 wrote to memory of 4164	228	audiodga.exe	114
PID 228 wrote to memory of 4164	228	audiodga.exe	114
PID 228 wrote to memory of 4164	228	audiodga.exe	114
PID 228 wrote to memory of 1176	228	audiodga.exe	115
PID 228 wrote to memory of 1176	228	audiodga.exe	115
PID 228 wrote to memory of 1176	228	audiodga.exe	115
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116
PID 228 wrote to memory of 2928	228	audiodga.exe	116

C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:3792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:4000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\c3f439cca47f6af6db6bd16f06902ba2_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  PID:4420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:596
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:228
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe:Zone.Identifier"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2472
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:4036
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
      4⤵
      Executes dropped EXE
      PID:3068
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
      4⤵
      Executes dropped EXE
      PID:4164
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
      4⤵
      Executes dropped EXE
      PID:1176
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      PID:2928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Subvert Trust Controls

T1553

SIP and Trust Provider Hijacking

T1553.003

Credential Access

Discovery

Query Registry

T1012

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\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodga.exe

Filesize
457KB

MD5
c3f439cca47f6af6db6bd16f06902ba2

SHA1
abe133372c18ecffda452f7ac23e1783e3037213

SHA256
34403bc1a7968916174684be3a8512ae99c732178be5137294a9293ae520eb89

SHA512
26b39d42a584c4da5b5fa9380f7faa5d7ec407f81b2570b2ba61560a78d8e0fecd0c3fb07b65b6d3ce58ee46dcf28fbb8090f734903034c28cdb6170f47129fe

Download Submit
C:\Users\Admin\AppData\Roaming\winloga\logs.dat

Filesize
79B

MD5
d466c68429d5930587b346c7cc382db7

SHA1
1fe2b53486c49abb5fe03c203b608c1a0fee2903

SHA256
440b6d25880d55a2923c239b83235220148e9decc2c99384cc892715dc8626da

SHA512
3f256dc5acb02f90ec59e6e9d0b8af297562730cdb4534d5d83275c6c0e74291b693cf280a99f82f04c0db21fc29022bc68443cf1a6a87bc509990110d1133ca

Download Submit
memory/228-39-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/228-27-0x0000000006BE0000-0x0000000006C7C000-memory.dmp

Filesize
624KB

Download
memory/228-26-0x0000000006B20000-0x0000000006B2C000-memory.dmp

Filesize
48KB

Download
memory/228-24-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/228-23-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/228-22-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/228-21-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-6-0x0000000005980000-0x00000000059E6000-memory.dmp

Filesize
408KB

Download
memory/1760-5-0x0000000005310000-0x000000000533A000-memory.dmp

Filesize
168KB

Download
memory/1760-11-0x0000000005EF0000-0x0000000005EFC000-memory.dmp

Filesize
48KB

Download
memory/1760-12-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-17-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-9-0x00000000060E0000-0x00000000062A2000-memory.dmp

Filesize
1.8MB

Download
memory/1760-8-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/1760-7-0x0000000005370000-0x0000000005392000-memory.dmp

Filesize
136KB

Download
memory/1760-0-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/1760-10-0x0000000005F00000-0x0000000005F08000-memory.dmp

Filesize
32KB

Download
memory/1760-4-0x000000007494E000-0x000000007494F000-memory.dmp

Filesize
4KB

Download
memory/1760-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp

Filesize
584KB

Download
memory/1760-1-0x0000000000490000-0x0000000000508000-memory.dmp

Filesize
480KB

Download
memory/1760-2-0x00000000053D0000-0x0000000005974000-memory.dmp

Filesize
5.6MB

Download
memory/2928-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2928-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2928-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2928-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download