remcos | 2064a4f060420b125d2b8a3185e143ad7b5aa157aa50f898f84e4683d8f5ae41

General

Target

cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe
Size

336KB
MD5

cea0a279fb115217ec39f4f04181c02f
SHA1

527f0e39c323a251f1f135e9ac72fc9404f8d047
SHA256

2064a4f060420b125d2b8a3185e143ad7b5aa157aa50f898f84e4683d8f5ae41
SHA512

9721864f363dcaba8ea9953e4b42dab2dfcc0e34da1ed592f3a562ca41301b779be98dc73c177f262cf591d862a1d4c5da1c0d44c9d739ade02fbe0a7da8f498
SSDEEP

6144:95bGfIow+ftRUZB4rKIt8ZB1apjB/C4bxAcw6bh0yH1z85iL1g99:9sIp+fQ2rKe8ZBQ9C4bHwOrz8ELq

Score

10^/10

remcos princehost agilenet discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.0.5 Pro

Botnet

PrinceHost

C2

Prince.jumpingcrab.com:1990

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
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
kjuhyt
keylog_path
%AppData%
mouse_option
false
mutex
kiuyt-YWU9I4
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

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	Window Desktop Manager.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe	cmd.exe

Executes dropped EXE 3 IoCs

pid	Process
4940	Window Desktop Manager.exe
3992	Window Desktop Manager.exe
3332	Window Desktop Manager.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/4624-3-0x0000000002680000-0x00000000026A8000-memory.dmp	agile_net

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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Window Desktop Manager = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\Window Desktop Manager.exe -boot"	Window Desktop Manager.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4940 set thread context of 3332	4940	Window Desktop Manager.exe	99

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 6 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	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Window Desktop Manager.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Window Desktop Manager.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Window Desktop Manager.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4940	Window Desktop Manager.exe
4940	Window Desktop Manager.exe
4940	Window Desktop Manager.exe
4940	Window Desktop Manager.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe
Token: SeDebugPrivilege	4940	Window Desktop Manager.exe
Token: SeDebugPrivilege	3992	Window Desktop Manager.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3332	Window Desktop Manager.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 1588	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	87
PID 4624 wrote to memory of 1588	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	87
PID 4624 wrote to memory of 1588	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	87
PID 4624 wrote to memory of 64	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	89
PID 4624 wrote to memory of 64	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	89
PID 4624 wrote to memory of 64	4624	cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe	89
PID 4760 wrote to memory of 4940	4760	explorer.exe	91
PID 4760 wrote to memory of 4940	4760	explorer.exe	91
PID 4760 wrote to memory of 4940	4760	explorer.exe	91
PID 4940 wrote to memory of 3992	4940	Window Desktop Manager.exe	97
PID 4940 wrote to memory of 3992	4940	Window Desktop Manager.exe	97
PID 4940 wrote to memory of 3992	4940	Window Desktop Manager.exe	97
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99
PID 4940 wrote to memory of 3332	4940	Window Desktop Manager.exe	99

C:\Users\Admin\AppData\Local\Temp\cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\cea0a279fb115217ec39f4f04181c02f_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe"
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  PID:1588
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\System32\explorer.exe" /c, "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:64

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe"
  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 AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4940
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3992
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:3332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Window Desktop Manager.exe

Filesize
336KB

MD5
cea0a279fb115217ec39f4f04181c02f

SHA1
527f0e39c323a251f1f135e9ac72fc9404f8d047

SHA256
2064a4f060420b125d2b8a3185e143ad7b5aa157aa50f898f84e4683d8f5ae41

SHA512
9721864f363dcaba8ea9953e4b42dab2dfcc0e34da1ed592f3a562ca41301b779be98dc73c177f262cf591d862a1d4c5da1c0d44c9d739ade02fbe0a7da8f498

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

Filesize
79B

MD5
a0ff3cb192c35305b2336531498bd91d

SHA1
9c0e9498931425f058c4bde506eb38e49f77d5c6

SHA256
73253137042cb54671eb4b1f67eb95eb6bb12ca03eac9db1b9f6ca066c2427b3

SHA512
5393220e007850b303e078156e04ce33f36131afd420922968eb23ce3698be1c697f5270ee79528fd1b4ab57fc79fd369627dc04b4c37657983224f28ce214ee

Download Submit
memory/3332-18-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3332-17-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3332-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4624-6-0x00000000072B0000-0x0000000007342000-memory.dmp

Filesize
584KB

Download
memory/4624-0-0x000000007537E000-0x000000007537F000-memory.dmp

Filesize
4KB

Download
memory/4624-10-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/4624-4-0x0000000007760000-0x0000000007D04000-memory.dmp

Filesize
5.6MB

Download
memory/4624-5-0x0000000075370000-0x0000000075B20000-memory.dmp

Filesize
7.7MB

Download
memory/4624-3-0x0000000002680000-0x00000000026A8000-memory.dmp

Filesize
160KB

Download
memory/4624-2-0x0000000004C50000-0x0000000004C8A000-memory.dmp

Filesize
232KB

Download
memory/4624-1-0x00000000002D0000-0x000000000032C000-memory.dmp

Filesize
368KB

Download
memory/4940-13-0x0000000008400000-0x000000000849C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads