remcos | 63e83b892e02c8d7ae37f28156813ab3257e10c4e8ca10d58d0c18ed5482c72b

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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

Executes dropped EXE 2 IoCs

pid	Process
2196	win32.exe
2436	win32.exe

Loads dropped DLL 1 IoCs

pid	Process
2596	cmd.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win32.exe\""	win32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\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 352 set thread context of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 2196 set thread context of 2436	2196	win32.exe	36

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	cmd.exe
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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2436	win32.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 352 wrote to memory of 2660	352	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	31
PID 2660 wrote to memory of 1972	2660	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	32
PID 2660 wrote to memory of 1972	2660	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	32
PID 2660 wrote to memory of 1972	2660	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	32
PID 2660 wrote to memory of 1972	2660	JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe	32
PID 1972 wrote to memory of 2596	1972	WScript.exe	33
PID 1972 wrote to memory of 2596	1972	WScript.exe	33
PID 1972 wrote to memory of 2596	1972	WScript.exe	33
PID 1972 wrote to memory of 2596	1972	WScript.exe	33
PID 2596 wrote to memory of 2196	2596	cmd.exe	35
PID 2596 wrote to memory of 2196	2596	cmd.exe	35
PID 2596 wrote to memory of 2196	2596	cmd.exe	35
PID 2596 wrote to memory of 2196	2596	cmd.exe	35
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36
PID 2196 wrote to memory of 2436	2196	win32.exe	36

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:352
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_114ca984bed5235729c17eec5a64fbe1.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2660
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1972
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win32.exe"
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2596
    - - 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:2196
      - 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:2436

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

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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
d44de91a5b9efff3abcf047ca1194170

SHA1
5bfc17bf5470ae459be3a265af1611828701a0f8

SHA256
73fc8e32d48de26a06f94d0b05d94efe28879b3402e428cc02dce006a29a197c

SHA512
712aaca5b7a0336cbe764598e2096872a645ad7db12b18ff294f1e898843da89a0dcb6f5d39fb12de95a6e075ba1528f89476050eeafcf8fb6bd859f28c31656

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

Filesize
744KB

MD5
114ca984bed5235729c17eec5a64fbe1

SHA1
66eff1922a7167868b079da344ff979773081ff2

SHA256
63e83b892e02c8d7ae37f28156813ab3257e10c4e8ca10d58d0c18ed5482c72b

SHA512
b1a1b9dba3c7d8dde7c79478e1c89bd21e16ada1c4e341aff4274d5dba2a9abbb6345a53fe521c1bf074bbdbdaca7ad07a60ce63b52ead64563eac1eb61f2992

Download Submit
memory/352-6-0x0000000005B80000-0x0000000005C1C000-memory.dmp

Filesize
624KB

Download
memory/352-3-0x0000000000490000-0x000000000049A000-memory.dmp

Filesize
40KB

Download
memory/352-5-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/352-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/352-1-0x0000000000130000-0x00000000001F0000-memory.dmp

Filesize
768KB

Download
memory/352-4-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/352-2-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/352-31-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/2196-35-0x0000000000D50000-0x0000000000E10000-memory.dmp

Filesize
768KB

Download
memory/2436-55-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2436-56-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2436-59-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2436-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2660-14-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-7-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-9-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-10-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-12-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-22-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-24-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-16-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-18-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-8-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2660-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads