remcos | 63e83b892e02c8d7ae37f28156813ab3257e10c4e8ca10d58d0c18ed5482c72b

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-01-2025 05:33

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General

Target

JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
Size

744KB
MD5

114ca984bed5235729c17eec5a64fbe1
SHA1

66eff1922a7167868b079da344ff979773081ff2
SHA256

63e83b892e02c8d7ae37f28156813ab3257e10c4e8ca10d58d0c18ed5482c72b
SHA512

b1a1b9dba3c7d8dde7c79478e1c89bd21e16ada1c4e341aff4274d5dba2a9abbb6345a53fe521c1bf074bbdbdaca7ad07a60ce63b52ead64563eac1eb61f2992
SSDEEP

12288:DYBcfZmzZKngr7bec9HFnpzLMI0/Te1PJSWQ7fzSVlQgchASBJu:DYBm04ndwVure1PJPKfmE3NBJ

Score

10^/10

remcos grace_2021 discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

3.2.1 Pro

Botnet

Grace_2021

jamaru1444.myftp.biz:2019

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
win32.exe
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-NLZOMN
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
win
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
wikipedia;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
1624	win32.exe
2740	win32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win32.exe\""	win32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win32.exe\""	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 916 set thread context of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 1624 set thread context of 2740	1624	win32.exe	96

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 6 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	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2740	win32.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 916 wrote to memory of 1612	916	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	91
PID 1612 wrote to memory of 1584	1612	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	92
PID 1612 wrote to memory of 1584	1612	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	92
PID 1612 wrote to memory of 1584	1612	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	92
PID 1584 wrote to memory of 5052	1584	WScript.exe	93
PID 1584 wrote to memory of 5052	1584	WScript.exe	93
PID 1584 wrote to memory of 5052	1584	WScript.exe	93
PID 5052 wrote to memory of 1624	5052	cmd.exe	95
PID 5052 wrote to memory of 1624	5052	cmd.exe	95
PID 5052 wrote to memory of 1624	5052	cmd.exe	95
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96
PID 1624 wrote to memory of 2740	1624	win32.exe	96

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:916
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1612
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1584
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:5052
    - - C:\Users\Admin\AppData\Roaming\win32.exe
        
        C:\Users\Admin\AppData\Roaming\win32.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1624
      - C:\Users\Admin\AppData\Roaming\win32.exe
        
        "C:\Users\Admin\AppData\Roaming\win32.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2740

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

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\Local\Temp\install.vbs

Filesize
402B

MD5
0023c43bc14320440f81eb67a28e9e99

SHA1
49ac6fcc2550105a92c6ba7a1194e09bafc00ca3

SHA256
5403135310d071b0f43b3b153a3aa636d29d3cf7ccfc2a66550f18e10aa6da21

SHA512
5781f081ca10e112af8402de496c87978f06295620a0331f9226bf6f0637da0aacaf952fe1a3e7d1c9dbcfc0a5a578c22267533b7e5fa4a3ba0b6cc5dc3492bf

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

Filesize
148B

MD5
21a79acc9dd83f8222a08229d64f0b34

SHA1
ac708a14c24fe235e67007d3e443182cf5f58421

SHA256
6770caf7a0d01ddff6250dbd7257090d12c323115b530435538d216648313136

SHA512
00c87528a168c0245b6aecc8bb1a24b7f6ccad8007db98ad2e060812b8ab27a8e37b13e4fc46aff4149b258c28fcf91f988f940db664cb7a7bfcf9645ce2a252

Download Submit
C:\Users\Admin\AppData\Roaming\win32.exe

Filesize
744KB

MD5
114ca984bed5235729c17eec5a64fbe1

SHA1
66eff1922a7167868b079da344ff979773081ff2

SHA256
63e83b892e02c8d7ae37f28156813ab3257e10c4e8ca10d58d0c18ed5482c72b

SHA512
b1a1b9dba3c7d8dde7c79478e1c89bd21e16ada1c4e341aff4274d5dba2a9abbb6345a53fe521c1bf074bbdbdaca7ad07a60ce63b52ead64563eac1eb61f2992

Download Submit
memory/916-6-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/916-2-0x0000000005670000-0x0000000005C14000-memory.dmp

Filesize
5.6MB

Download
memory/916-5-0x0000000004F50000-0x0000000004F5A000-memory.dmp

Filesize
40KB

Download
memory/916-0-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/916-7-0x0000000006750000-0x000000000675A000-memory.dmp

Filesize
40KB

Download
memory/916-8-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/916-9-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/916-10-0x0000000006A80000-0x0000000006B1C000-memory.dmp

Filesize
624KB

Download
memory/916-11-0x0000000006CF0000-0x0000000006D8C000-memory.dmp

Filesize
624KB

Download
memory/916-1-0x00000000004C0000-0x0000000000580000-memory.dmp

Filesize
768KB

Download
memory/916-4-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/916-3-0x00000000050C0000-0x0000000005246000-memory.dmp

Filesize
1.5MB

Download
memory/916-20-0x0000000074830000-0x0000000074FE0000-memory.dmp

Filesize
7.7MB

Download
memory/1612-15-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1612-23-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1612-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1612-13-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1612-12-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2740-31-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2740-32-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2740-35-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads