remcos | 8f1195eb7e16aaded55e4d1fb0b111c398d060f09637c75bc9288c7072a286d2

Analysis

max time kernel
149s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 02:45

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General

Target
8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe
Size 602KB
Sample240602-c8v1ragg47
SHA256 8f1195eb7e16aaded55e4d1fb0b111c398d060f09637c75bc9288c7072a286d2
MD5 8ca55c81303f94bd91924c10007c9455
SHA1 f9495fc6abdcd5567ce4835652a53cbb87b4bb98
SHA512 051da1d57d36f73f0fbf624fdeeef11b2d021d64e9fe784e7ef15b9433a5e13338fd591f949ee625bc078838214d036d126c28b381a53b235517731c8bd8a83d
SSDEEP 6144:VWl+3njVZYlS1+rAwyVWRGLwdWr2o/+LSjzqAa7xUDmxwq:I+3hZYlS1+rbPRKWaa7xebq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos gold farm persistence rat

Malware Config

Extracted

Family

remcos

Version

1.9.9 Pro

Botnet

Gold Farm

fzsification.bounceme.net:9009

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
log8498.bat
keylog_flag
false
keylog_folder
Windows Command Module
keylog_path
%AppData%
mouse_option
false
mutex
Null-8WJKBY
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
remcos
take_screenshot_option
true
take_screenshot_time
5
take_screenshot_title
coin;bitcoin;crypto;ethereum;litecoin;bitfinex;bittrex;coinbase;paypal;

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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1036	dorphor.exe
728	dorphor.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\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Duppy = "C:\\Users\\Admin\\Documents\\dorphor.exe -boot"	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1036 set thread context of 728	1036	dorphor.exe	96

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1660	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe
Token: SeDebugPrivilege	1036	dorphor.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
728	dorphor.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 1036	1660	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe	95
PID 1660 wrote to memory of 1036	1660	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe	95
PID 1660 wrote to memory of 1036	1660	8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe	95
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96
PID 1036 wrote to memory of 728	1036	dorphor.exe	96

C:\Users\Admin\AppData\Local\Temp\8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8ca55c81303f94bd91924c10007c9455_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\Documents\dorphor.exe
  "C:\Users\Admin\Documents\dorphor.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1036
- - C:\Users\Admin\Documents\dorphor.exe
    "C:\Users\Admin\Documents\dorphor.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:728

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

dorphor.exe

Path C:\Users\Admin\Documents\dorphor.exe
Size 602KB
SHA256 8f1195eb7e16aaded55e4d1fb0b111c398d060f09637c75bc9288c7072a286d2
MD5 8ca55c81303f94bd91924c10007c9455
SHA1 f9495fc6abdcd5567ce4835652a53cbb87b4bb98
SHA512 051da1d57d36f73f0fbf624fdeeef11b2d021d64e9fe784e7ef15b9433a5e13338fd591f949ee625bc078838214d036d126c28b381a53b235517731c8bd8a83d
SSDEEP 6144:VWl+3njVZYlS1+rAwyVWRGLwdWr2o/+LSjzqAa7xUDmxwq:I+3hZYlS1+rbPRKWaa7xebq
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/728-29-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/728-25-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/728-24-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/728-21-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1036-20-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1036-31-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1036-18-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1036-19-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1660-3-0x0000000074C22000-0x0000000074C23000-memory.dmp

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memory/1660-17-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1660-4-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1660-0-0x0000000074C22000-0x0000000074C23000-memory.dmp

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memory/1660-2-0x0000000074C20000-0x00000000751D1000-memory.dmp

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memory/1660-1-0x0000000074C20000-0x00000000751D1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads