remcos | c64ca5606398aa1b9ad898707b9eb52e93868af100fde7df07c649a328f5acb1

General

Target

QUOTATION.exe
Size

181KB
MD5

c66292916d227f292cac326f75993383
SHA1

eef2a4651a5ed35b02860d01e2fb6820d24aa335
SHA256

94073b5a128209945ad89ec7a8c554d774f11ec2dbad6bbdf9326169e3b56733
SHA512

d041bfde6dde674f749a55e90d1cef32b419f2a580a6c6a31fea6cffd93825c9148c6dbf709ded5ed7878eec52a813cb12bc8798e5e153df77af4556b4d63b8a
SSDEEP

3072:IBkfJpRXATwMdFCcibEGLOeBey8VdpDZOYquD8Y8BR0XDkF21EJkrT1FRAHvr1Oq:IqjIOE5SeyEb1vq7YmR0XFxKhOSt

Score

10^/10

remcos remotehost discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

RemoteHost

C2

103.151.124.64:2243

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
pdf
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
pdf
keylog_path
%AppData%
mouse_option
false
mutex
pdf-TDD0QE
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
pdf
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
Remcos family
remcos

Loads dropped DLL 2 IoCs

pid	Process
1680	QUOTATION.exe
1680	QUOTATION.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\name = "C:\\Users\\Admin\\AppData\\Roaming\\folder\\file.exe"	QUOTATION.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1680 set thread context of 2324	1680	QUOTATION.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	QUOTATION.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QUOTATION.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1680	QUOTATION.exe
1680	QUOTATION.exe
1680	QUOTATION.exe
1680	QUOTATION.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1680	QUOTATION.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2324	QUOTATION.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 2324	1680	QUOTATION.exe	30
PID 1680 wrote to memory of 2324	1680	QUOTATION.exe	30
PID 1680 wrote to memory of 2324	1680	QUOTATION.exe	30
PID 1680 wrote to memory of 2324	1680	QUOTATION.exe	30
PID 1680 wrote to memory of 2324	1680	QUOTATION.exe	30

C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION.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:1680
- C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
  "C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2324

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\Local\Temp\8b1h6puq1on44ey.dll

Filesize
13KB

MD5
7ecdcf1bffe6d1438e48f55ad0189544

SHA1
cadfac118ce47c345bcf3bd22a695a5e4bf172ad

SHA256
3a923a9fef243b18f8f68795ddcaa16416f5c4f811361947f8e6bb1b22f36aa3

SHA512
68c52981838618344be4cac12d0fe4e3f21c58e498a3f245de3622dd9a6c15c733de2da4116f3daff6558f3b45df9b7d88e6cc58159c24f178882d909bc83912

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

Filesize
74B

MD5
f83a6a56021d27806f3df84b630f746d

SHA1
2b5e7b2facf3486d15ae55fc8f12002096ce02c5

SHA256
b35f27cb049303a1e713f14c41eb566cf1165a44bd00b5ec118d96941a46ecd1

SHA512
2d89f8b9cd544c5d2e3007e6a2d82b1e4d0d0740ce6bcbb476b63bd49ed231af9ccc2a9f48a5d0458227d49506adf58a49e9bf4c17e4fd16686a6cfe360729fd

Download Submit
\Users\Admin\AppData\Local\Temp\nsyA767.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

Download Submit
memory/1680-17-0x00000000743C0000-0x00000000743C8000-memory.dmp

Filesize
32KB

Download
memory/1680-12-0x00000000743C0000-0x00000000743C8000-memory.dmp

Filesize
32KB

Download
memory/2324-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-27-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-31-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-33-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-41-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-43-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-45-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-47-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-49-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2324-51-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads