remcos | e759db35e2aa047d055ca4d5d089da667aaa39d443a35601784090382f0d1e2a

General

Target

c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
Size

533KB
MD5

c8cd3c8b932d0d8bb2b9b851259e85af
SHA1

e15440e53ef1673ac4816ffc80aed3cbee348a6c
SHA256

e759db35e2aa047d055ca4d5d089da667aaa39d443a35601784090382f0d1e2a
SHA512

644d18526e1020417fc51cd967117eb3ec1635f836a229deebfdf3be5517fe151389dd2fa1b17baeb1312bfc71e52167e37c2b949eecef50c2745d5c535340c6
SSDEEP

12288:rq9xZoOJR0yS6PV+RTRicEsuDKkKX/0lDQS0mdJh4:W5oYRB+773spFX4

Score

10^/10

remcos money discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

3.0.0 Pro

Botnet

money

C2

cjmoneykelvincrugar.duckdns.org:20944

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
excel.exe
copy_folder
excel
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
excel-ETNYHC
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
excel
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

Loads dropped DLL 2 IoCs

pid	Process
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\name = "C:\\Users\\Admin\\AppData\\Roaming\\folder\\file.exe"	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2244 set thread context of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30

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 2 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	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2708	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30
PID 2244 wrote to memory of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30
PID 2244 wrote to memory of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30
PID 2244 wrote to memory of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30
PID 2244 wrote to memory of 2708	2244	c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\c8cd3c8b932d0d8bb2b9b851259e85af_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2708

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

System Information Discovery

1

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\remcos\logs.dat

Filesize
74B

MD5
7ab69d1e13c11856650b5723bbcbc900

SHA1
7f9c25905f6c051717d6db8a6978b6f3dcfc5f14

SHA256
b5c3d559580ec7778c70841dc6d85c1957b70b870992285bd1b502cfb9655f4c

SHA512
baa107cb369b88a01a9fd3205d77410ff1147985c5e4716ffbd3354c1dd438f3c3b1bb46c3f4d6630cd6355903713b4c2e6cdea06fbacffb276203ab80c3982f

Download Submit
\Users\Admin\AppData\Local\Temp\nst77B0.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
\Users\Admin\AppData\Local\Temp\oird.dll

Filesize
61KB

MD5
cf4ae210908c96902bc5b7f418bc07f2

SHA1
17b7e94ab427967f73496882207a857eaf32f4d8

SHA256
d2cbc91d8a57bbcb023ae76bf4d53f2e77a06df828c78ec23ddcf9be333a2d45

SHA512
234fc71cd2acc461a84b762f2ac73d736ca2844a4d2fd4003e438e1ee3fcde07778c562b9b92d672c7c8cef18c14764bb7b8d9393f68e1ea8c471fdac9c2ac70

Download Submit
memory/2244-15-0x000000001000D000-0x0000000010010000-memory.dmp

Filesize
12KB

Download
memory/2708-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-24-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-21-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-20-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-26-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-27-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-29-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-33-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-17-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-37-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-43-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-49-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2708-53-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads