remcos | 2a51ff41bcd2af80bf83a79b591a3da996bcc33043cb7f0b7b4493bff7a8a688

Analysis

max time kernel
149s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 08:13

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General

Target

d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Size

1.3MB
MD5

d5ee80ad1cc23eeb1b25cde2af60c9c1
SHA1

476d6a75a019ed3b2bb866c6f89e2c0970dccf22
SHA256

2a51ff41bcd2af80bf83a79b591a3da996bcc33043cb7f0b7b4493bff7a8a688
SHA512

8dc1e1fe6e06049357fee74820ad0922524a0755867e51a511bd4c948ea2cd9cabc2d5b65bf4e279c2dd55a759aee7d35d683385ae4a08e0c0b40c5c8a4d93eb
SSDEEP

6144:M/1vlzqKOMCfCO0iniUIO++3DwXZvqiQUF5l2Pra:S

Score

10^/10

remcos ose_2021 noip discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

Ose_2021 NOIP

gdyhjjdhbvxgsfe.gotdns.ch:2177

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
win.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-PCZ95N
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

Checks computer location settings 2 TTPs 4 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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	win.exe

Executes dropped EXE 2 IoCs

pid	Process
2188	win.exe
1004	win.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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	win.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 25 IoCs

pid	Process
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe
2188	win.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1236 set thread context of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 2188 set thread context of 1004	2188	win.exe	108

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3836	1236	WerFault.exe	86
4852	2188	WerFault.exe	102

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	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	win.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2088	timeout.exe
4228	timeout.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000_Classes\Local Settings	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
2188	win.exe
2188	win.exe
2188	win.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
Token: SeDebugPrivilege	2188	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1004	win.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 2216	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	89
PID 1236 wrote to memory of 2216	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	89
PID 1236 wrote to memory of 2216	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	89
PID 2216 wrote to memory of 2088	2216	cmd.exe	91
PID 2216 wrote to memory of 2088	2216	cmd.exe	91
PID 2216 wrote to memory of 2088	2216	cmd.exe	91
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1236 wrote to memory of 1728	1236	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	93
PID 1728 wrote to memory of 432	1728	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	96
PID 1728 wrote to memory of 432	1728	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	96
PID 1728 wrote to memory of 432	1728	d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe	96
PID 432 wrote to memory of 1480	432	WScript.exe	100
PID 432 wrote to memory of 1480	432	WScript.exe	100
PID 432 wrote to memory of 1480	432	WScript.exe	100
PID 1480 wrote to memory of 2188	1480	cmd.exe	102
PID 1480 wrote to memory of 2188	1480	cmd.exe	102
PID 1480 wrote to memory of 2188	1480	cmd.exe	102
PID 2188 wrote to memory of 1640	2188	win.exe	103
PID 2188 wrote to memory of 1640	2188	win.exe	103
PID 2188 wrote to memory of 1640	2188	win.exe	103
PID 1640 wrote to memory of 4228	1640	cmd.exe	105
PID 1640 wrote to memory of 4228	1640	cmd.exe	105
PID 1640 wrote to memory of 4228	1640	cmd.exe	105
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108
PID 2188 wrote to memory of 1004	2188	win.exe	108

C:\Users\Admin\AppData\Local\Temp\d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c timeout 1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Windows\SysWOW64\timeout.exe
    timeout 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2088
- C:\Users\Admin\AppData\Local\Temp\d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d5ee80ad1cc23eeb1b25cde2af60c9c1_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1728
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:432
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1480
    - - C:\Users\Admin\AppData\Roaming\win.exe
        
        C:\Users\Admin\AppData\Roaming\win.exe
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2188
      - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /c timeout 1
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1640
        
        C:\Windows\SysWOW64\timeout.exe
        
        timeout 1
        7⤵
        System Location Discovery: System Language Discovery
        Delays execution with timeout.exe
        
        PID:4228
      - C:\Users\Admin\AppData\Roaming\win.exe
        
        "C:\Users\Admin\AppData\Roaming\win.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:1004
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2188 -s 1580
        6⤵
        Program crash
        
        PID:4852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1236 -s 1028
  2⤵
  - Program crash
  PID:3836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1236 -ip 1236
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2188 -ip 2188
1⤵
PID:4308

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
398B

MD5
4a74e626596d6e66b4bbc59ee6848f2d

SHA1
047849ac8735ecc0943428c7cd5e00b52eee06ed

SHA256
98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

SHA512
1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

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

Filesize
74B

MD5
bb3af6b6101f19b620121cb1f5aa3b76

SHA1
afea187c9dc84bb8e7fa5ee013e57bcb55106b1f

SHA256
077c5b6cf8f5f7bf95a90457c00bc27e160191cc0586f3d71d115c93f4500017

SHA512
0a9922da5804da3dd6877007a9e8b25c10967c9449152812ec576f84616bb44648075cfb35035ff2a38c7a4c02e32efd0b5cccf5fd514553f5973061cd32ffca

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe

Filesize
1.3MB

MD5
d5ee80ad1cc23eeb1b25cde2af60c9c1

SHA1
476d6a75a019ed3b2bb866c6f89e2c0970dccf22

SHA256
2a51ff41bcd2af80bf83a79b591a3da996bcc33043cb7f0b7b4493bff7a8a688

SHA512
8dc1e1fe6e06049357fee74820ad0922524a0755867e51a511bd4c948ea2cd9cabc2d5b65bf4e279c2dd55a759aee7d35d683385ae4a08e0c0b40c5c8a4d93eb

Download Submit
memory/1004-27-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1004-24-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1004-23-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1236-4-0x0000000004CE0000-0x0000000004D14000-memory.dmp

Filesize
208KB

Download
memory/1236-17-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/1236-5-0x0000000005EE0000-0x0000000006484000-memory.dmp

Filesize
5.6MB

Download
memory/1236-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/1236-3-0x0000000074B40000-0x00000000752F0000-memory.dmp

Filesize
7.7MB

Download
memory/1236-2-0x0000000004D40000-0x0000000004DDC000-memory.dmp

Filesize
624KB

Download
memory/1236-1-0x00000000002A0000-0x00000000003E8000-memory.dmp

Filesize
1.3MB

Download
memory/1728-8-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1728-12-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1728-15-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1728-7-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download