remcos | 870130235c0034bb2649c4268bfc3ff87de0fe2cf13d0af41ce0c0f397e5ea50

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 12:54

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General

Target

JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe
Size

1.3MB
MD5

a0747b376c17728fe2731e9e98d1b017
SHA1

7917d0e5d6adfb0690455afdafbe81db00cfc41b
SHA256

870130235c0034bb2649c4268bfc3ff87de0fe2cf13d0af41ce0c0f397e5ea50
SHA512

58b934b044ce00910e8abf5c12b1bd25aeb9e5cd458740967e5d538ea13f0cb871595658e13da2acbf2dc3e3d94848ccd79cf64dca74b25d9a8c0d4337318585
SSDEEP

24576:rAOcZEhGZJLnKjCT+8RrtqrpUu8sR0coTvAiHca6TPY5I7nT1RMwa+NI:tMZU/SrtqrpccOv/HP6c5IzTXM7+NI

Score

10^/10

remcos october-$$$$discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

OCTOBER-$$$$

mgc0147.hopto.org:2930

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-3MPDYA
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
take_screenshot_title
notepad;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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	bmxbniuglo.pif

Executes dropped EXE 2 IoCs

pid	Process
904	bmxbniuglo.pif
4236	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "c:\\45235440\\BMXBNI~1.PIF c:\\45235440\\JIFVHS~1.TCL"	bmxbniuglo.pif

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 904 set thread context of 4236	904	bmxbniuglo.pif	108

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 10 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	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bmxbniuglo.pif
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
904	bmxbniuglo.pif
904	bmxbniuglo.pif

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4236	RegSvcs.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 4680 wrote to memory of 904	4680	JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe	83
PID 4680 wrote to memory of 904	4680	JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe	83
PID 4680 wrote to memory of 904	4680	JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe	83
PID 904 wrote to memory of 1628	904	bmxbniuglo.pif	86
PID 904 wrote to memory of 1628	904	bmxbniuglo.pif	86
PID 904 wrote to memory of 1628	904	bmxbniuglo.pif	86
PID 904 wrote to memory of 4112	904	bmxbniuglo.pif	87
PID 904 wrote to memory of 4112	904	bmxbniuglo.pif	87
PID 904 wrote to memory of 4112	904	bmxbniuglo.pif	87
PID 904 wrote to memory of 4124	904	bmxbniuglo.pif	90
PID 904 wrote to memory of 4124	904	bmxbniuglo.pif	90
PID 904 wrote to memory of 4124	904	bmxbniuglo.pif	90
PID 904 wrote to memory of 344	904	bmxbniuglo.pif	97
PID 904 wrote to memory of 344	904	bmxbniuglo.pif	97
PID 904 wrote to memory of 344	904	bmxbniuglo.pif	97
PID 904 wrote to memory of 3836	904	bmxbniuglo.pif	102
PID 904 wrote to memory of 3836	904	bmxbniuglo.pif	102
PID 904 wrote to memory of 3836	904	bmxbniuglo.pif	102
PID 904 wrote to memory of 3464	904	bmxbniuglo.pif	105
PID 904 wrote to memory of 3464	904	bmxbniuglo.pif	105
PID 904 wrote to memory of 3464	904	bmxbniuglo.pif	105
PID 904 wrote to memory of 2716	904	bmxbniuglo.pif	107
PID 904 wrote to memory of 2716	904	bmxbniuglo.pif	107
PID 904 wrote to memory of 2716	904	bmxbniuglo.pif	107
PID 904 wrote to memory of 4236	904	bmxbniuglo.pif	108
PID 904 wrote to memory of 4236	904	bmxbniuglo.pif	108
PID 904 wrote to memory of 4236	904	bmxbniuglo.pif	108
PID 904 wrote to memory of 4236	904	bmxbniuglo.pif	108
PID 904 wrote to memory of 4236	904	bmxbniuglo.pif	108

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0747b376c17728fe2731e9e98d1b017.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4680
- C:\45235440\bmxbniuglo.pif
  "C:\45235440\bmxbniuglo.pif" jifvhstup.tcl
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1628
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4112
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4124
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:344
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3836
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3464
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2716
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4236

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:\45235440\bmxbniuglo.pif

Filesize
759KB

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
C:\45235440\cpuclokd.ini

Filesize
56KB

MD5
8b670b655cf5bdbec4e8bf031a5c303a

SHA1
446d41c4e7a03d7e21261b52bc42a499e78697e8

SHA256
58ffca8fbe9fe189e29909b12d8306af25dcea9b98af76167905d3f7d27555f1

SHA512
d95918f4a5fd2649298b1218d4e62e8339d59eda01a47708c2934bbec6d7f0e16f68a8abc27c178dfe117c73a4e36083d1ca58e106900bde945179b1440fcffc

Download Submit
C:\45235440\qtbjvco.vjk

Filesize
919KB

MD5
03371574057f34d8f0cd8b857234477e

SHA1
fabea7c051eb26d402e42be3279c24b51243172e

SHA256
1093ea8b90ac829a7ca7058f5e7aafb74012a331090e52c3f2e7229a70895f08

SHA512
82b25daf3662746f1d009c2ee2bc1f01715389d5545d883f3c795a8557d5796711f49840fbb5728081fd22203e961a82225f70a75ee7c2d29d1664c68f0f6f54

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe

Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

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

Filesize
148B

MD5
fef831a2d274b87d032b1bebeeae6dfa

SHA1
a98d14ccad604d5f2a398033594fd67de47ba60f

SHA256
cdf51e2bbdb2f3d510633407356e87e784a88ccd31a479df11a201dbb03358ae

SHA512
fd4fe722967d798911845c572c4470b8c2c494979d86e88275b431ccfad8d0158642c85b4bf617fbc0296e5f3ffde8ddf75dbeab5ae1cdd6e18b984f7186675a

Download Submit
memory/4236-84-0x0000000001360000-0x00000000018F8000-memory.dmp

Filesize
5.6MB

Download
memory/4236-86-0x0000000001360000-0x00000000018F8000-memory.dmp

Filesize
5.6MB

Download
memory/4236-87-0x0000000001360000-0x00000000018F8000-memory.dmp

Filesize
5.6MB

Download
memory/4236-81-0x0000000001360000-0x00000000018F8000-memory.dmp

Filesize
5.6MB

Download
memory/4236-90-0x0000000001360000-0x00000000018F8000-memory.dmp

Filesize
5.6MB

Download