remcos | 7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 03:52

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General

Target

ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
Size

453KB
MD5

ea88f63b1c26c1aefd1804ee475478ab
SHA1

526c70868c0fb9d11065d2f75f98e2c523907c92
SHA256

7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750
SHA512

08df2bba1ce203baee82b5ca97a110d2d57597e8f3e2ec61c9a710e70a3752e11a9570e700716d3bb9facdf606a868871016c61ab6d5b4e04d79bcd0329e3bd3
SSDEEP

12288:/xd8PIcO+kOmZ2xd8PIcO+kOmZ9QVBQTBK8Yuv7J+:PMk+kbUMk+kbqVBSw8PJ+

Score

10^/10

remcos rich-fam1 defense_evasion discovery rat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

Rich-Fam1

rich-fam1.strangled.net:6628

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
3
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
logs.dat
keylog_flag
false
keylog_folder
winlogs
keylog_path
%AppData%
mouse_option
false
mutex
iuytfdcuytf-OV62Q3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	audiodgc.exe

Drops startup file 6 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4460	audiodgc.exe
3520	audiodgc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4460 set thread context of 3520	4460	audiodgc.exe	104

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 opened for modification	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_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 8 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	audiodgc.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	ea88f63b1c26c1aefd1804ee475478ab_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

NTFS ADS 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
Token: SeDebugPrivilege	4460	audiodgc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3520	audiodgc.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 1048	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	89
PID 4760 wrote to memory of 1048	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	89
PID 4760 wrote to memory of 1048	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	89
PID 4760 wrote to memory of 2968	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	91
PID 4760 wrote to memory of 2968	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	91
PID 4760 wrote to memory of 2968	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	91
PID 4760 wrote to memory of 1376	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	93
PID 4760 wrote to memory of 1376	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	93
PID 4760 wrote to memory of 1376	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	93
PID 4760 wrote to memory of 908	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	97
PID 4760 wrote to memory of 908	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	97
PID 4760 wrote to memory of 908	4760	ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe	97
PID 908 wrote to memory of 4460	908	cmd.exe	99
PID 908 wrote to memory of 4460	908	cmd.exe	99
PID 908 wrote to memory of 4460	908	cmd.exe	99
PID 4460 wrote to memory of 3696	4460	audiodgc.exe	100
PID 4460 wrote to memory of 3696	4460	audiodgc.exe	100
PID 4460 wrote to memory of 3696	4460	audiodgc.exe	100
PID 4460 wrote to memory of 2752	4460	audiodgc.exe	102
PID 4460 wrote to memory of 2752	4460	audiodgc.exe	102
PID 4460 wrote to memory of 2752	4460	audiodgc.exe	102
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104
PID 4460 wrote to memory of 3520	4460	audiodgc.exe	104

C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:1048
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe:Zone.Identifier"
  2⤵
  - Subvert Trust Controls: Mark-of-the-Web Bypass
  - System Location Discovery: System Language Discovery
  - NTFS ADS
  PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\ea88f63b1c26c1aefd1804ee475478ab_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  PID:1376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:908
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.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:4460
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:3696
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe:Zone.Identifier"
      4⤵
      Drops startup file
      System Location Discovery: System Language Discovery
      PID:2752
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:3520

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\audiodgc.exe

Filesize
453KB

MD5
ea88f63b1c26c1aefd1804ee475478ab

SHA1
526c70868c0fb9d11065d2f75f98e2c523907c92

SHA256
7ad56c2211cf19c5e6cf7a25846eb21a67c59baa55644d3cd1a097cf4d734750

SHA512
08df2bba1ce203baee82b5ca97a110d2d57597e8f3e2ec61c9a710e70a3752e11a9570e700716d3bb9facdf606a868871016c61ab6d5b4e04d79bcd0329e3bd3

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

Filesize
79B

MD5
43d1ca59854f8a6f745fd82440615fdf

SHA1
02dd5a8e9013c30422a22b7a1ba9321e16a6f896

SHA256
7bf8db19d62afa67fee30080b43925c321c45f83f8682731c726170e8dfeee64

SHA512
e660eae800e133554be734903d55437b8209a03e0f95d26e59d6a31d9a79d2ab597b5e3af85d202b2ee8b049e0cf231f40b57aa6aa6bf463a3c37ef6f06609a7

Download Submit
memory/3520-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3520-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3520-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3520-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4460-36-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-27-0x00000000067A0000-0x000000000683C000-memory.dmp

Filesize
624KB

Download
memory/4460-26-0x00000000066E0000-0x00000000066EC000-memory.dmp

Filesize
48KB

Download
memory/4460-24-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-23-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-22-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4460-21-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4760-6-0x0000000005F40000-0x0000000005FA6000-memory.dmp

Filesize
408KB

Download
memory/4760-7-0x0000000005930000-0x0000000005952000-memory.dmp

Filesize
136KB

Download
memory/4760-12-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4760-11-0x0000000006090000-0x000000000609C000-memory.dmp

Filesize
48KB

Download
memory/4760-10-0x00000000060A0000-0x00000000060A8000-memory.dmp

Filesize
32KB

Download
memory/4760-9-0x00000000067C0000-0x0000000006982000-memory.dmp

Filesize
1.8MB

Download
memory/4760-8-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4760-17-0x0000000074900000-0x00000000750B0000-memory.dmp

Filesize
7.7MB

Download
memory/4760-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/4760-5-0x00000000058D0000-0x00000000058FA000-memory.dmp

Filesize
168KB

Download
memory/4760-4-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/4760-3-0x0000000005480000-0x0000000005512000-memory.dmp

Filesize
584KB

Download
memory/4760-2-0x0000000005990000-0x0000000005F34000-memory.dmp

Filesize
5.6MB

Download
memory/4760-1-0x0000000000B50000-0x0000000000BC8000-memory.dmp

Filesize
480KB

Download