remcos | 1ca69e236adf2ce4b3602f6e7328fdf75f9ca9b99abbc85bef1a034f97acb730

Analysis

max time kernel
244s
max time network
303s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 19:06

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General

Target

1 ORGANIZER MARY 2023 COMPILED PDF.exe
Size

6.1MB
MD5

4864a55cff27f686023456a22371e790
SHA1

6ed30c0371fe167d38411bfa6d720fcdcacc4f4c
SHA256

08c7fb6067acc8ac207d28ab616c9ea5bc0d394956455d6a3eecb73f8010f7a2
SHA512

4bd3a16435cca6ce7a7aa829eb967619a8b7c02598474e634442cffc55935870d54d844a04496bf9c7e8c29c40fae59ac6eb39c8550c091d06a28211491d0bfb
SSDEEP

98304:VZQIM+/nv/CDoAkYwpAa5ge1zZ/jtdZwUkQ:bJCKlA2VKUz

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

privmerkt.com:8922

nwemarkets.com:5552

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-TA78E3
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	1 ORGANIZER MARY 2023 COMPILED PDF.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	build.exe

Deletes itself 1 IoCs

pid	Process
1020	WScript.exe

Executes dropped EXE 6 IoCs

pid	Process
3564	build.exe
540	build.exe
1884	build.exe
3008	build.exe
4256	build.exe
3568	build.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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\*UpdaterCisco = "rundll32.exe C:\\Users\\Admin\\Documents\\CiscoUpdater000_PARTIAL.dll,EntryPoint"	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OculusVideoEditor = "C:\\Users\\Admin\\Music\\VideoEditorUpdater\\VideoEditorOculus.exe"	build.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 11 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	1 ORGANIZER MARY 2023 COMPILED PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1 ORGANIZER MARY 2023 COMPILED PDF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	build.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings	1 ORGANIZER MARY 2023 COMPILED PDF.exe
Key created	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings	build.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 2384	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	87
PID 1084 wrote to memory of 2384	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	87
PID 1084 wrote to memory of 2384	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	87
PID 1084 wrote to memory of 2384	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	87
PID 1084 wrote to memory of 2384	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	87
PID 1084 wrote to memory of 2436	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	89
PID 1084 wrote to memory of 2436	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	89
PID 1084 wrote to memory of 2436	1084	1 ORGANIZER MARY 2023 COMPILED PDF.exe	89
PID 2436 wrote to memory of 4968	2436	cmd.exe	91
PID 2436 wrote to memory of 4968	2436	cmd.exe	91
PID 2436 wrote to memory of 4968	2436	cmd.exe	91
PID 2384 wrote to memory of 3564	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	95
PID 2384 wrote to memory of 3564	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	95
PID 2384 wrote to memory of 3564	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	95
PID 2384 wrote to memory of 1020	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	98
PID 2384 wrote to memory of 1020	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	98
PID 2384 wrote to memory of 1020	2384	1 ORGANIZER MARY 2023 COMPILED PDF.exe	98
PID 3564 wrote to memory of 540	3564	build.exe	99
PID 3564 wrote to memory of 540	3564	build.exe	99
PID 3564 wrote to memory of 540	3564	build.exe	99
PID 3564 wrote to memory of 540	3564	build.exe	99
PID 3564 wrote to memory of 540	3564	build.exe	99
PID 540 wrote to memory of 4856	540	build.exe	103
PID 540 wrote to memory of 4856	540	build.exe	103
PID 540 wrote to memory of 4856	540	build.exe	103
PID 1884 wrote to memory of 4256	1884	build.exe	104
PID 1884 wrote to memory of 4256	1884	build.exe	104
PID 1884 wrote to memory of 4256	1884	build.exe	104
PID 1884 wrote to memory of 4256	1884	build.exe	104
PID 1884 wrote to memory of 4256	1884	build.exe	104
PID 3008 wrote to memory of 3568	3008	build.exe	105
PID 3008 wrote to memory of 3568	3008	build.exe	105
PID 3008 wrote to memory of 3568	3008	build.exe	105
PID 3008 wrote to memory of 3568	3008	build.exe	105
PID 3008 wrote to memory of 3568	3008	build.exe	105

C:\Users\Admin\AppData\Local\Temp\1 ORGANIZER MARY 2023 COMPILED PDF.exe
"C:\Users\Admin\AppData\Local\Temp\1 ORGANIZER MARY 2023 COMPILED PDF.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1084
- C:\Users\Admin\AppData\Local\Temp\1 ORGANIZER MARY 2023 COMPILED PDF.exe
  "C:\Users\Admin\AppData\Local\Temp\1 ORGANIZER MARY 2023 COMPILED PDF.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Users\Admin\AppData\Local\Temp\build.exe
    "C:\Users\Admin\AppData\Local\Temp\build.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3564
  - - C:\Users\Admin\AppData\Local\Temp\build.exe
      "C:\Users\Admin\AppData\Local\Temp\build.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:540
    - - C:\Windows\SysWOW64\WScript.exe
        
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ophhlrf.vbs"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4856
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\crcqdprlykhgjmuvghxbpaiqabxeq.vbs"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1020
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*UpdaterCisco" /t REG_SZ /d "rundll32.exe C:\Users\Admin\Documents\CiscoUpdater000_PARTIAL.dll",EntryPoint /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4968

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2236

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Users\Admin\AppData\Local\Temp\build.exe
  "C:\Users\Admin\AppData\Local\Temp\build.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4256

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\build.exe
  "C:\Users\Admin\AppData\Local\Temp\build.exe"
  2⤵
  - Executes dropped EXE
  PID:3568

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\build.exe

Filesize
4.2MB

MD5
979bea168beb5fef43c775cf31632c53

SHA1
c16509b69ee617ff0324a538539c2ed9aadeda4d

SHA256
675fc1d5e9a46f083a088ba32815eb191464ee29ecedc4b50b7ab577597844aa

SHA512
f08db793dca0bc7dd2934f055f5e308485be0f34d7a0c9ff74a604014bf5c54bb063d00f0f037a7efacd8c03a8fcdbc131a8d3c1df30fc5bd046a7b17800f7c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\crcqdprlykhgjmuvghxbpaiqabxeq.vbs

Filesize
608B

MD5
980bbd66ef96c65450db06d5617e2ada

SHA1
d4c5349293015e0609814bd6130bce5ce6936ea9

SHA256
27ccb3b58cb1d102717ec24d1084a003ea27057f6dc5b00a694a02bf88347b96

SHA512
54123136c4627683d1b87c593d14e7579e7dd1172f5a125d3d6304a213bfdd54c33781ba356b901fc2dd94da9b8e67da133272d9e6a6445cbb7008966fcc536e

Download Submit
C:\Users\Admin\AppData\Local\Temp\ophhlrf.vbs

Filesize
492B

MD5
a08c77e615c26646a95452f22655a7af

SHA1
a9b22345b72c7ed979b05d96abf5205d640122b1

SHA256
bc3e711162ad21a5cc3e0ddfb993ccdba13a0a24419d4443402f42c7c24b5792

SHA512
d218b7cbfd91ae1ef8b3207b67772c5a06bd38057797958fe89db13e8f4170ed74469c6d25cc68997dd7c65755ea01f8bf949dac413d1b6820fab0192281e891

Download Submit
memory/540-70-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-69-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-80-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-84-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-79-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-83-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-61-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-55-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-63-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-64-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-82-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-65-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-81-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-68-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-87-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-59-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-91-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-78-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-77-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-76-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-74-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/540-60-0x00000000000C0000-0x0000000000142000-memory.dmp

Filesize
520KB

Download
memory/1084-11-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-17-0x00000000702ED000-0x000000007030B000-memory.dmp

Filesize
120KB

Download
memory/1084-1-0x00000000702ED000-0x000000007030B000-memory.dmp

Filesize
120KB

Download
memory/1084-8-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-0-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-2-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-3-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-5-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/1084-6-0x0000000070200000-0x0000000070471000-memory.dmp

Filesize
2.4MB

Download
memory/2384-18-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-16-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-7-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-13-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-14-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-12-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-15-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-19-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-45-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-41-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-40-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-39-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-38-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-37-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-36-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-24-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-21-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/2384-20-0x0000000000A30000-0x0000000000AB2000-memory.dmp

Filesize
520KB

Download
memory/3564-50-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-58-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-51-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-52-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-53-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-54-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download
memory/3564-56-0x0000000000400000-0x000000000084D000-memory.dmp

Filesize
4.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads