remcos | d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
13/08/2024, 03:05

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General

Target
15c127b849650f0c43f5681f8399a090N.exe
Size 932KB
Sample240813-dlf4ra1dla
SHA256 d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca
MD5 15c127b849650f0c43f5681f8399a090
SHA1 efe8542f6e4612a1bddd0f3e29c99f4b70cbc9b3
SHA512 b3df32ed3caad831ae02bb7ed72d34747f1e76ec505d3a49a2dceef0207acbcd08c5aea4241ec777035b1896c80df084b85807a51a9fa1dbb6750bc547000bf0
SSDEEP 24576:nxv7AOUeJ5BWiJ5K1xKtk4mPbUc39ZDhzq39A:xv7cmWOU1Sk46bUUZDQ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

104.250.180.178:7902

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
Adobe.exe
copy_folder
Adobe
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Adobe-OTOIRK
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 1 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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	15c127b849650f0c43f5681f8399a090N.exe

Executes dropped EXE 2 IoCs

pid	Process
1432	Adobe.exe
4524	Adobe.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	15c127b849650f0c43f5681f8399a090N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	15c127b849650f0c43f5681f8399a090N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe-OTOIRK = "\"C:\\ProgramData\\Adobe\\Adobe.exe\""	Adobe.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4536 set thread context of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 1432 set thread context of 4524	1432	Adobe.exe	97

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 4 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	15c127b849650f0c43f5681f8399a090N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	15c127b849650f0c43f5681f8399a090N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Adobe.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 4536 wrote to memory of 376	4536	15c127b849650f0c43f5681f8399a090N.exe	94
PID 376 wrote to memory of 1432	376	15c127b849650f0c43f5681f8399a090N.exe	95
PID 376 wrote to memory of 1432	376	15c127b849650f0c43f5681f8399a090N.exe	95
PID 376 wrote to memory of 1432	376	15c127b849650f0c43f5681f8399a090N.exe	95
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97
PID 1432 wrote to memory of 4524	1432	Adobe.exe	97

C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe
"C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe
  "C:\Users\Admin\AppData\Local\Temp\15c127b849650f0c43f5681f8399a090N.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:376
- - C:\ProgramData\Adobe\Adobe.exe
    "C:\ProgramData\Adobe\Adobe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1432
  - - C:\ProgramData\Adobe\Adobe.exe
      "C:\ProgramData\Adobe\Adobe.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:4524

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

Adobe.exe

Path C:\ProgramData\Adobe\Adobe.exe
Size 932KB
SHA256 d3ab0c4ddfbdbce6b1f200436de1c9d1f94567b06a420dc453d02460452cebca
MD5 15c127b849650f0c43f5681f8399a090
SHA1 efe8542f6e4612a1bddd0f3e29c99f4b70cbc9b3
SHA512 b3df32ed3caad831ae02bb7ed72d34747f1e76ec505d3a49a2dceef0207acbcd08c5aea4241ec777035b1896c80df084b85807a51a9fa1dbb6750bc547000bf0
SSDEEP 24576:nxv7AOUeJ5BWiJ5K1xKtk4mPbUc39ZDhzq39A:xv7cmWOU1Sk46bUUZDQ
MD5 SHA1 SHA512 SSDEEP

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memory/376-11-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/376-28-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/376-15-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/376-14-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/376-12-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/1432-37-0x0000000074060000-0x0000000074810000-memory.dmp

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memory/1432-30-0x0000000074060000-0x0000000074810000-memory.dmp

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memory/1432-29-0x000000007406E000-0x000000007406F000-memory.dmp

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memory/4524-38-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-39-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-45-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-44-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-43-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-42-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-41-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-40-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-34-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-35-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4524-36-0x0000000000400000-0x0000000000482000-memory.dmp

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memory/4536-2-0x00000000057F0000-0x0000000005D94000-memory.dmp

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memory/4536-3-0x0000000005180000-0x0000000005212000-memory.dmp

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memory/4536-4-0x0000000005250000-0x000000000525A000-memory.dmp

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memory/4536-1-0x00000000006C0000-0x00000000007AE000-memory.dmp

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memory/4536-0-0x0000000074FAE000-0x0000000074FAF000-memory.dmp

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memory/4536-10-0x0000000008B90000-0x0000000008C2C000-memory.dmp

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memory/4536-5-0x0000000074FA0000-0x0000000075750000-memory.dmp

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memory/4536-6-0x00000000057C0000-0x00000000057DA000-memory.dmp

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memory/4536-16-0x0000000074FA0000-0x0000000075750000-memory.dmp

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memory/4536-7-0x0000000006480000-0x000000000648E000-memory.dmp

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memory/4536-8-0x0000000006490000-0x00000000064A6000-memory.dmp

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memory/4536-9-0x0000000008A30000-0x0000000008AF0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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