remcos | 5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
10-09-2024 01:52

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General

Target

5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe
Size

913KB
MD5

5a1a4200ce20d69530ca2b5ea575ef4a
SHA1

00e5d156420606a6ee6da8b37f11f5a561376146
SHA256

5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd
SHA512

7f46f8ab217230a031cfdd377833dfd416d2a64be9ebfd289faba9bbabb77347697d3404faaa72e01e262f6d25277a87ca18f64fe2e7240aa883684f150d82db
SSDEEP

24576:rRAaN6zclYJQqEllY8ZE0TdGuHSbSnsUQKnBgfzoP:rRXscmJXV0tsInB4

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

192.3.243.155:7643

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-C9YEJ8
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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
4724	powershell.exe
4480	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 536 set thread context of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107

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	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
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	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.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
4800	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4724	powershell.exe
4724	powershell.exe
4480	powershell.exe
4480	powershell.exe
4724	powershell.exe
4480	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4724	powershell.exe
Token: SeDebugPrivilege	4480	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4960	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 4724	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	101
PID 536 wrote to memory of 4724	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	101
PID 536 wrote to memory of 4724	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	101
PID 536 wrote to memory of 4480	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	103
PID 536 wrote to memory of 4480	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	103
PID 536 wrote to memory of 4480	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	103
PID 536 wrote to memory of 4800	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	105
PID 536 wrote to memory of 4800	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	105
PID 536 wrote to memory of 4800	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	105
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107
PID 536 wrote to memory of 4960	536	5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe	107

C:\Users\Admin\AppData\Local\Temp\5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe
"C:\Users\Admin\AppData\Local\Temp\5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:536
- 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\5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4724
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\OzYxABbJ.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4480
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OzYxABbJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp84AC.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4800
- C:\Users\Admin\AppData\Local\Temp\5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe
  "C:\Users\Admin\AppData\Local\Temp\5df39d87a6c1cb5faf24da06fb3d3fd255544f3d04895f395d764307643eb8bd.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4960

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4160,i,4356837537417149674,16553092232944545509,262144 --variations-seed-version --mojo-platform-channel-handle=3928 /prefetch:8
1⤵
PID:4740

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

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Downloads

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
1f0ab00ea86fc1a2706645443012e339

SHA1
087cdcf88fe076e4856675aa1f41bba31fe9a7a4

SHA256
59d64a6aa290559f156a9f3ec24d70c176dd7b4ebaceeaa5cfae5d86fe16cc3a

SHA512
feee4469562830f823d1d4043b37e1b098ff06374c5578595026bf3605572f5825c56f2641dd5ad6ba5b0633ac04a6bf7368e8ffbaa98ca2b449b0a427ddc0c7

Download Submit
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
0581c0968a34f9899d1f1417c61fdbd8

SHA1
9f55b631c22fa974f1efb2dc3236dd5e0c2eeaa4

SHA256
ae52f71d399265d60434d10bfba82e1d419e28bf4bd7c7726318b1958d7f78fb

SHA512
c54bd966a07ffbc9416b70f637e7ed4e02ff470bbe1f5d7a77c5a38a498db6f156357d8373a29b66322de41f6eae65417b8be1f83f0b81afe87b64ef58be005f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mr3cmm0e.szx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp84AC.tmp

Filesize
1KB

MD5
3615fea58a34dcebd61f4e5b4398a287

SHA1
2e6c6d57a5086d519807bfb1a08a191010b10d9e

SHA256
2cb012555c89ca92662abb976b674af9aedbd4ba26576d53c8563875041522bb

SHA512
c2c5acc7dff23ec30a6bdb588ccc5977cc2df6f573181d6a0697f3d69145b240aa7ce1ef5d2bf4a36799e52e14948d92bf07ddde823c6b7073248866a80c26f4

Download Submit
memory/536-6-0x0000000005490000-0x00000000054A8000-memory.dmp

Filesize
96KB

Download
memory/536-2-0x00000000057F0000-0x0000000005D94000-memory.dmp

Filesize
5.6MB

Download
memory/536-7-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/536-8-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/536-9-0x00000000063D0000-0x0000000006490000-memory.dmp

Filesize
768KB

Download
memory/536-10-0x0000000006680000-0x000000000671C000-memory.dmp

Filesize
624KB

Download
memory/536-5-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/536-1-0x00000000006D0000-0x00000000007BA000-memory.dmp

Filesize
936KB

Download
memory/536-4-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/536-3-0x0000000005240000-0x00000000052D2000-memory.dmp

Filesize
584KB

Download
memory/536-0-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/536-54-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-20-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-93-0x0000000007B50000-0x0000000007B58000-memory.dmp

Filesize
32KB

Download
memory/4480-26-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-92-0x0000000007B70000-0x0000000007B8A000-memory.dmp

Filesize
104KB

Download
memory/4480-89-0x0000000007A30000-0x0000000007A41000-memory.dmp

Filesize
68KB

Download
memory/4480-23-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-99-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4480-88-0x0000000007AB0000-0x0000000007B46000-memory.dmp

Filesize
600KB

Download
memory/4480-75-0x00000000759D0000-0x0000000075A1C000-memory.dmp

Filesize
304KB

Download
memory/4724-19-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4724-24-0x0000000005D10000-0x0000000005D76000-memory.dmp

Filesize
408KB

Download
memory/4724-15-0x0000000002AD0000-0x0000000002B06000-memory.dmp

Filesize
216KB

Download
memory/4724-17-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/4724-55-0x00000000063F0000-0x000000000640E000-memory.dmp

Filesize
120KB

Download
memory/4724-100-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4724-56-0x0000000006420000-0x000000000646C000-memory.dmp

Filesize
304KB

Download
memory/4724-16-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4724-18-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4724-21-0x0000000005B70000-0x0000000005B92000-memory.dmp

Filesize
136KB

Download
memory/4724-63-0x00000000759D0000-0x0000000075A1C000-memory.dmp

Filesize
304KB

Download
memory/4724-62-0x00000000075B0000-0x00000000075E2000-memory.dmp

Filesize
200KB

Download
memory/4724-73-0x0000000007570000-0x000000000758E000-memory.dmp

Filesize
120KB

Download
memory/4724-74-0x00000000075F0000-0x0000000007693000-memory.dmp

Filesize
652KB

Download
memory/4724-25-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/4724-85-0x0000000007D70000-0x00000000083EA000-memory.dmp

Filesize
6.5MB

Download
memory/4724-86-0x0000000007720000-0x000000000773A000-memory.dmp

Filesize
104KB

Download
memory/4724-87-0x0000000007790000-0x000000000779A000-memory.dmp

Filesize
40KB

Download
memory/4724-41-0x0000000005DF0000-0x0000000006144000-memory.dmp

Filesize
3.3MB

Download
memory/4724-91-0x0000000007960000-0x0000000007974000-memory.dmp

Filesize
80KB

Download
memory/4724-90-0x0000000007950000-0x000000000795E000-memory.dmp

Filesize
56KB

Download
memory/4960-103-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-59-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-53-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-111-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-58-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-49-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-135-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-57-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-110-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-118-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-119-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-126-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-127-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-134-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4960-52-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download