remcos | 7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 15:51

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General

Target

7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
Size

900KB
MD5

c9d033467bd4405db131e2db7dd8abbf
SHA1

31a47ebb0a372ce4dea8f9ad0d7e547816ff7103
SHA256

7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29
SHA512

08b643c8ed42b6f59d9879eff287f9cf1f11696794c084dcc337f4d893cc759868457d8ef2fc095b73aa43deec5527d12dffbbdce528a71f758e8c0af335ffc2
SSDEEP

24576:QHIlObe6kDOI8hCMghsuN3OqyDzORPW3fa:FciJ2N4spU+i

Score

10^/10

remcos lee discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

lee

lack.work.gd:3124

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
vlc
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
ios
mouse_option
false
mutex
gig-RM2DNS
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
sos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
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
4916	powershell.exe
4688	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1448 set thread context of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97

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	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.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	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.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
1396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
4688	powershell.exe
4916	powershell.exe
1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
4916	powershell.exe
4688	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
Token: SeDebugPrivilege	4916	powershell.exe
Token: SeDebugPrivilege	4688	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4800	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 4916	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	91
PID 1448 wrote to memory of 4916	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	91
PID 1448 wrote to memory of 4916	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	91
PID 1448 wrote to memory of 4688	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	93
PID 1448 wrote to memory of 4688	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	93
PID 1448 wrote to memory of 4688	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	93
PID 1448 wrote to memory of 1396	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	95
PID 1448 wrote to memory of 1396	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	95
PID 1448 wrote to memory of 1396	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	95
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97
PID 1448 wrote to memory of 4800	1448	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	97

C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
"C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.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:1448
- 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\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4916
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\njEnUdtKgG.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4688
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\njEnUdtKgG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFD0D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1396
- C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
  "C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4800

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:\ProgramData\ios\logs.dat

Filesize
144B

MD5
0f20fcc517f21095a13c51cdefd32f45

SHA1
b0e1d9bd20b721619d3145a39e5ad4ebaa688dd3

SHA256
c91a52bddc49d18a57517598bf85d1420d532856a5018afa301309c677622661

SHA512
14e1f5023a2a6439dfad932babc4c7a83db3577759d82705586c6438f54b35e739c904eacb6f8367992f8be0c799c084c6f263c8c271231067facbce174ab480

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_a5jxaynf.qxc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFD0D.tmp

Filesize
1KB

MD5
7117de68701bdbf20178171d48a22bdb

SHA1
c0bf26c9e3b15b767dd268450fd13e4bb93197db

SHA256
b1551555e82dc20a194be694bd57307de43bfb3f4c1d4b4f643404a71fab3961

SHA512
1da48241a4764f3d1cec566383b7c06d1551b2043ed20cdf3955e3810baa134c9f70eff10415badcc0acb6c8cd7018117c043bbf2b2316a7b1ef04d521939a48

Download Submit
memory/1448-6-0x0000000004FF0000-0x0000000004FFA000-memory.dmp

Filesize
40KB

Download
memory/1448-4-0x0000000005080000-0x000000000511C000-memory.dmp

Filesize
624KB

Download
memory/1448-5-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1448-3-0x0000000004F20000-0x0000000004FB2000-memory.dmp

Filesize
584KB

Download
memory/1448-7-0x0000000005190000-0x00000000051A2000-memory.dmp

Filesize
72KB

Download
memory/1448-8-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/1448-9-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1448-10-0x0000000007AA0000-0x0000000007B60000-memory.dmp

Filesize
768KB

Download
memory/1448-2-0x0000000005590000-0x0000000005B34000-memory.dmp

Filesize
5.6MB

Download
memory/1448-0-0x0000000074DFE000-0x0000000074DFF000-memory.dmp

Filesize
4KB

Download
memory/1448-55-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/1448-1-0x0000000000460000-0x0000000000546000-memory.dmp

Filesize
920KB

Download
memory/4688-88-0x0000000007260000-0x00000000072F6000-memory.dmp

Filesize
600KB

Download
memory/4688-64-0x000000006F700000-0x000000006F74C000-memory.dmp

Filesize
304KB

Download
memory/4688-19-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4688-22-0x0000000004D10000-0x0000000004D32000-memory.dmp

Filesize
136KB

Download
memory/4688-23-0x0000000004DF0000-0x0000000004E56000-memory.dmp

Filesize
408KB

Download
memory/4688-97-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4688-93-0x0000000007300000-0x0000000007308000-memory.dmp

Filesize
32KB

Download
memory/4688-92-0x0000000007320000-0x000000000733A000-memory.dmp

Filesize
104KB

Download
memory/4688-91-0x0000000007220000-0x0000000007234000-memory.dmp

Filesize
80KB

Download
memory/4688-89-0x00000000071E0000-0x00000000071F1000-memory.dmp

Filesize
68KB

Download
memory/4688-87-0x0000000007050000-0x000000000705A000-memory.dmp

Filesize
40KB

Download
memory/4688-85-0x0000000007620000-0x0000000007C9A000-memory.dmp

Filesize
6.5MB

Download
memory/4688-46-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4688-86-0x0000000006FE0000-0x0000000006FFA000-memory.dmp

Filesize
104KB

Download
memory/4688-83-0x0000000006270000-0x000000000628E000-memory.dmp

Filesize
120KB

Download
memory/4688-84-0x0000000006CD0000-0x0000000006D73000-memory.dmp

Filesize
652KB

Download
memory/4688-20-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4688-62-0x00000000062A0000-0x00000000062D2000-memory.dmp

Filesize
200KB

Download
memory/4800-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-113-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-121-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-120-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-112-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-105-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4800-104-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4916-16-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-25-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-18-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-24-0x0000000005630000-0x0000000005696000-memory.dmp

Filesize
408KB

Download
memory/4916-96-0x0000000074DF0000-0x00000000755A0000-memory.dmp

Filesize
7.7MB

Download
memory/4916-15-0x0000000002C10000-0x0000000002C46000-memory.dmp

Filesize
216KB

Download
memory/4916-90-0x0000000007A50000-0x0000000007A5E000-memory.dmp

Filesize
56KB

Download
memory/4916-44-0x0000000005EA0000-0x00000000061F4000-memory.dmp

Filesize
3.3MB

Download
memory/4916-63-0x000000006F700000-0x000000006F74C000-memory.dmp

Filesize
304KB

Download
memory/4916-53-0x00000000064D0000-0x00000000064EE000-memory.dmp

Filesize
120KB

Download
memory/4916-56-0x0000000006A30000-0x0000000006A7C000-memory.dmp

Filesize
304KB

Download
memory/4916-17-0x0000000005730000-0x0000000005D58000-memory.dmp

Filesize
6.2MB

Download