remcos | d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 12:28

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General

Target

Company Details.exe
Size

988KB
MD5

dc6296c1f5ec3b6e4dcbc33d0fcf3616
SHA1

64c81ccb99415efe3aaffcfeea93d15fc08b735b
SHA256

d776f6152105609e96a665bf681b71c945da8341b326410ee20e6a31b234d4c9
SHA512

e28695c316d1b5d2d35726ed3f68ebccc1d07083d3b533b90ac9a1cf697ebbee8794278625107f305e22b55c68a1a820a73103f208f6f6a0f40ecf24f4b5db98
SSDEEP

24576:72R1pA1DLK3qSmuyhBaNV8DDCANtsMFSzraULSgk:OPA1DLKagy4V8DftsgSzraR

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:59321

nnamoo.duckdns.org:59321

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-41EVS0
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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1880	powershell.exe
4520	powershell.exe

Checks computer location settings 2 TTPs 1 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	Company Details.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4484 set thread context of 1208	4484	Company Details.exe	95

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 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Company Details.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Company Details.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4816	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4484	Company Details.exe
4520	powershell.exe
1880	powershell.exe
4484	Company Details.exe
1880	powershell.exe
4520	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4484	Company Details.exe
Token: SeDebugPrivilege	1880	powershell.exe
Token: SeDebugPrivilege	4520	powershell.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4484 wrote to memory of 1880	4484	Company Details.exe	89
PID 4484 wrote to memory of 1880	4484	Company Details.exe	89
PID 4484 wrote to memory of 1880	4484	Company Details.exe	89
PID 4484 wrote to memory of 4520	4484	Company Details.exe	91
PID 4484 wrote to memory of 4520	4484	Company Details.exe	91
PID 4484 wrote to memory of 4520	4484	Company Details.exe	91
PID 4484 wrote to memory of 4816	4484	Company Details.exe	93
PID 4484 wrote to memory of 4816	4484	Company Details.exe	93
PID 4484 wrote to memory of 4816	4484	Company Details.exe	93
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95
PID 4484 wrote to memory of 1208	4484	Company Details.exe	95

C:\Users\Admin\AppData\Local\Temp\Company Details.exe
"C:\Users\Admin\AppData\Local\Temp\Company Details.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4484
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Company Details.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1880
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YHWyXapflg.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4520
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YHWyXapflg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD263.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4816
- C:\Users\Admin\AppData\Local\Temp\Company Details.exe
  "C:\Users\Admin\AppData\Local\Temp\Company Details.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
3d086a433708053f9bf9523e1d87a4e8

SHA1
b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

SHA256
6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

SHA512
931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
9042efef89730db49df2d514994fa102

SHA1
caab7abdb4304ff86aa377fe752a5e182cdaf9a5

SHA256
2c388762247f2f22df4c03871695c3278494facccfb6349a0c1bb62d7950da18

SHA512
271cecfd25702dad8b02cdca2d972ee28593744c128c875306a8a94ad39e70fd93d916d0eee367df96a4b86b118e07eef5c8c328ce04f712285c1033767d7008

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4av3frfy.ke3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD263.tmp

Filesize
1KB

MD5
5223039c35f71270583ee191a22ca4e8

SHA1
54a0ff1afc6e5305d234cbf8664b2051a5f249a3

SHA256
dd7da966e1d0ceb2f66688f432b502dadd5858bc36ad550942c8115ebd434b38

SHA512
619ac71df6d4001290e900d4f5c2012e9f7608bba6c2bc88fe5715c133cbaad9f312bde2bdbf2a4335707c4ea50d48294d9d7eca406535603b9b13a298210be6

Download Submit
memory/1208-96-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-103-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-101-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-100-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-99-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-98-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-95-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-94-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-102-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-106-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1208-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1880-52-0x00000000063F0000-0x000000000643C000-memory.dmp

Filesize
304KB

Download
memory/1880-84-0x00000000078E0000-0x00000000078F4000-memory.dmp

Filesize
80KB

Download
memory/1880-44-0x0000000005D60000-0x00000000060B4000-memory.dmp

Filesize
3.3MB

Download
memory/1880-23-0x0000000005C40000-0x0000000005CA6000-memory.dmp

Filesize
408KB

Download
memory/1880-16-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/1880-24-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/1880-17-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/1880-51-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/1880-93-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/1880-54-0x0000000074E40000-0x0000000074E8C000-memory.dmp

Filesize
304KB

Download
memory/1880-53-0x0000000007300000-0x0000000007332000-memory.dmp

Filesize
200KB

Download
memory/1880-64-0x0000000007340000-0x000000000735E000-memory.dmp

Filesize
120KB

Download
memory/1880-15-0x0000000002A60000-0x0000000002A96000-memory.dmp

Filesize
216KB

Download
memory/1880-75-0x0000000007570000-0x0000000007613000-memory.dmp

Filesize
652KB

Download
memory/1880-22-0x0000000005BA0000-0x0000000005BC2000-memory.dmp

Filesize
136KB

Download
memory/1880-77-0x0000000007CF0000-0x000000000836A000-memory.dmp

Filesize
6.5MB

Download
memory/1880-18-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4484-10-0x00000000093B0000-0x000000000944C000-memory.dmp

Filesize
624KB

Download
memory/4484-50-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4484-1-0x0000000000460000-0x000000000055C000-memory.dmp

Filesize
1008KB

Download
memory/4484-2-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/4484-3-0x0000000004F80000-0x0000000005012000-memory.dmp

Filesize
584KB

Download
memory/4484-4-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4484-5-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/4484-6-0x0000000005420000-0x0000000005430000-memory.dmp

Filesize
64KB

Download
memory/4484-7-0x000000007459E000-0x000000007459F000-memory.dmp

Filesize
4KB

Download
memory/4484-8-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4484-0-0x000000007459E000-0x000000007459F000-memory.dmp

Filesize
4KB

Download
memory/4484-9-0x0000000006D50000-0x0000000006E0E000-memory.dmp

Filesize
760KB

Download
memory/4520-85-0x0000000007250000-0x000000000726A000-memory.dmp

Filesize
104KB

Download
memory/4520-20-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4520-25-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4520-92-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4520-65-0x0000000074E40000-0x0000000074E8C000-memory.dmp

Filesize
304KB

Download
memory/4520-78-0x0000000006F10000-0x0000000006F2A000-memory.dmp

Filesize
104KB

Download
memory/4520-86-0x0000000007230000-0x0000000007238000-memory.dmp

Filesize
32KB

Download
memory/4520-80-0x0000000006F80000-0x0000000006F8A000-memory.dmp

Filesize
40KB

Download
memory/4520-19-0x0000000074590000-0x0000000074D40000-memory.dmp

Filesize
7.7MB

Download
memory/4520-83-0x0000000007140000-0x000000000714E000-memory.dmp

Filesize
56KB

Download
memory/4520-82-0x0000000007110000-0x0000000007121000-memory.dmp

Filesize
68KB

Download
memory/4520-81-0x0000000007190000-0x0000000007226000-memory.dmp

Filesize
600KB

Download