remcos | 2f7c6195415c8d32bbf266557f2e31b945204713487644c46328160d1e730337

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20231025-en
resource tags

arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
submitted
14/12/2023, 01:47

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General

Target

TemD.exe
Size

648KB
MD5

e7d36392836c350b47e1e485465f2446
SHA1

b4cfaca779557d14cbccf09accefaf4ec8cec30e
SHA256

e037f166b8e3066f5b8fc2f4dea6cf0d052dde5234b46c81e3d5ecf73dc713c2
SHA512

c6f530cbfcf8d145e06c7850b1c51f2dc9efbd893229d12a2fe035be89d3c32979c803f4122f77278aa7d3595f70b99cd3fb867adeaea51fbafbaae7d265a3a1
SSDEEP

6144:DHtgbfyyNili9mp2kS4/JfrtkXl5w5R0koDQY1/rIPpGV8eY2M:TtcK+iEJ6RraXfwBoUY1/r8KB

Score

10^/10

remcos persistence rat

Malware Config

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Executes dropped EXE 1 IoCs

pid	Process
2968	RemD.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	cmd.exe
2084	cmd.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-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	TemD.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	RemD.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2588	2968	RemD.exe	33

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2248	TemD.exe
2968	RemD.exe
2968	RemD.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2248	TemD.exe
2968	RemD.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 2680	2248	TemD.exe	29
PID 2248 wrote to memory of 2680	2248	TemD.exe	29
PID 2248 wrote to memory of 2680	2248	TemD.exe	29
PID 2248 wrote to memory of 2680	2248	TemD.exe	29
PID 2680 wrote to memory of 2084	2680	WScript.exe	30
PID 2680 wrote to memory of 2084	2680	WScript.exe	30
PID 2680 wrote to memory of 2084	2680	WScript.exe	30
PID 2680 wrote to memory of 2084	2680	WScript.exe	30
PID 2084 wrote to memory of 2968	2084	cmd.exe	32
PID 2084 wrote to memory of 2968	2084	cmd.exe	32
PID 2084 wrote to memory of 2968	2084	cmd.exe	32
PID 2084 wrote to memory of 2968	2084	cmd.exe	32
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33
PID 2968 wrote to memory of 2588	2968	RemD.exe	33

C:\Users\Admin\AppData\Local\Temp\TemD.exe
"C:\Users\Admin\AppData\Local\Temp\TemD.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RemD\RemD.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2084
  - - C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:2968
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:2588

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
410B

MD5
991cad69a8a5ac8e22281a335b88e2b3

SHA1
58568a006ade6e2ca7fa25673b036bcefa303a7d

SHA256
95d975c5b36f23f9121390f8f4a1373b1cbb8045765e1c9fa68e114e2f592d60

SHA512
298dc73384bf23e913f9a92e83040d84171ef86630652f82f73367fec9e6c61eb8a6055afe03d997870e529e4e88c0f9571b6da8ca934311afdbb67aca3132ba

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

Filesize
79B

MD5
c64cb1370b23bcf93805e9a577944881

SHA1
6149742c52d84abdbc5a4732df73ffe8f812b032

SHA256
7aa453de5d9f8e0fd8e41a4e5a4f778af0a2910eb768cfdf6d5dc48c07a72e74

SHA512
f6842f1b9b718ddcc20e6b2005add72995e4784d8d4424704938cc22e00bf06569bc946799a9283bf8c8a6992e8b6b358bc188b9e17f000cc1946fd11e40fc55

Download Submit
\Users\Admin\AppData\Roaming\RemD\RemD.exe

Filesize
648KB

MD5
e7d36392836c350b47e1e485465f2446

SHA1
b4cfaca779557d14cbccf09accefaf4ec8cec30e

SHA256
e037f166b8e3066f5b8fc2f4dea6cf0d052dde5234b46c81e3d5ecf73dc713c2

SHA512
c6f530cbfcf8d145e06c7850b1c51f2dc9efbd893229d12a2fe035be89d3c32979c803f4122f77278aa7d3595f70b99cd3fb867adeaea51fbafbaae7d265a3a1

Download Submit
memory/2248-2-0x0000000077250000-0x0000000077326000-memory.dmp

Filesize
856KB

Download
memory/2248-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2248-6-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2248-7-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2248-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2248-12-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2588-35-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-37-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-44-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-41-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2588-27-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-29-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-31-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2588-33-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-20-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-21-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-25-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-23-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-24-0x0000000072940000-0x0000000072A93000-memory.dmp

Filesize
1.3MB

Download
memory/2968-46-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2968-19-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads