remcos | 7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29

Analysis

max time kernel
147s
max time network
154s
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 16:39

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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
2964	powershell.exe
4804	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 548 set thread context of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
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

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
2468	schtasks.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
2964	powershell.exe
4804	powershell.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
2964	powershell.exe
4804	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
Token: SeDebugPrivilege	2964	powershell.exe
Token: SeDebugPrivilege	4804	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1516	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 2964	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	99
PID 548 wrote to memory of 2964	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	99
PID 548 wrote to memory of 2964	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	99
PID 548 wrote to memory of 4804	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	101
PID 548 wrote to memory of 4804	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	101
PID 548 wrote to memory of 4804	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	101
PID 548 wrote to memory of 2468	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	103
PID 548 wrote to memory of 2468	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	103
PID 548 wrote to memory of 2468	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	103
PID 548 wrote to memory of 436	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	105
PID 548 wrote to memory of 436	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	105
PID 548 wrote to memory of 436	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	105
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106
PID 548 wrote to memory of 1516	548	7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe	106

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:548
- 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:2964
- 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:4804
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\njEnUdtKgG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A83.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2468
- C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe
  "C:\Users\Admin\AppData\Local\Temp\7943aab15dc5804448102c5c1fc5341b65708bff970773e25f0f27d807e90d29.exe"
  2⤵
  PID:436
- 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:1516

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
b58a4dab8a1cb49f90b2224a18fa9943

SHA1
03b947909c8fd9bfd85c21f419881328cae2bc51

SHA256
dbe5d9949110332c74edf912e03c8691190df68c927b0266912824f3153c7033

SHA512
d2497919fdca354e9ca0719ed658c1dcba5e04b92bcd5c7984434701484eae55ce60f70d25fce5f25b7c70aea3ca4eeba453503debd67ce53567e310720925ad

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
162ab80676b9e74a57fc68e102e6c0fd

SHA1
fb9a6e9e1aed7e9f7f70fee4bf016c00ac3e00e7

SHA256
1bfad117c9ec6290ba7c3fd694c203cc4ef2115face93cd436446cc8c5f6bd09

SHA512
31cc769a397d6ec14402d658414421d7f420ab5bd6bf1c08cd3334ec63194a326f065a4a924206123611e1096a779f1a919207f62fd2a4f6ea18f782213bab1e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5jrd53ao.mja.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3A83.tmp

Filesize
1KB

MD5
d466846e53573fc7284da467d0212df7

SHA1
fd8db8940a2f1c8319e30357fc0e5400af5b11ee

SHA256
a4892bc53e33b6e5386d5bcd6074e92736447f1127a176e00e65f370b0d89bda

SHA512
c705a027e0310d51cf10b0bfc923f173d9a15d23eb8a46036d6e138fd07a42fe25ade5308e199118d1ed6c40c7600d0892af4b76e424bf776229e372cc2fa638

Download Submit
memory/548-4-0x0000000004DA0000-0x0000000004E3C000-memory.dmp

Filesize
624KB

Download
memory/548-6-0x0000000004D10000-0x0000000004D1A000-memory.dmp

Filesize
40KB

Download
memory/548-7-0x00000000051D0000-0x00000000051E2000-memory.dmp

Filesize
72KB

Download
memory/548-8-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/548-9-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/548-10-0x0000000006100000-0x00000000061C0000-memory.dmp

Filesize
768KB

Download
memory/548-54-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/548-5-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/548-3-0x0000000004C50000-0x0000000004CE2000-memory.dmp

Filesize
584KB

Download
memory/548-0-0x0000000074FBE000-0x0000000074FBF000-memory.dmp

Filesize
4KB

Download
memory/548-2-0x0000000005200000-0x00000000057A4000-memory.dmp

Filesize
5.6MB

Download
memory/548-1-0x00000000002D0000-0x00000000003B6000-memory.dmp

Filesize
920KB

Download
memory/1516-116-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-107-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-108-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-115-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-124-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-47-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-123-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1516-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2964-18-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/2964-85-0x0000000007350000-0x00000000079CA000-memory.dmp

Filesize
6.5MB

Download
memory/2964-55-0x00000000059F0000-0x0000000005A0E000-memory.dmp

Filesize
120KB

Download
memory/2964-46-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/2964-15-0x0000000000C70000-0x0000000000CA6000-memory.dmp

Filesize
216KB

Download
memory/2964-17-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/2964-16-0x0000000004B70000-0x0000000005198000-memory.dmp

Filesize
6.2MB

Download
memory/2964-74-0x0000000075860000-0x00000000758AC000-memory.dmp

Filesize
304KB

Download
memory/2964-56-0x0000000005F40000-0x0000000005F8C000-memory.dmp

Filesize
304KB

Download
memory/2964-84-0x0000000006BE0000-0x0000000006C83000-memory.dmp

Filesize
652KB

Download
memory/2964-86-0x0000000006D10000-0x0000000006D2A000-memory.dmp

Filesize
104KB

Download
memory/2964-30-0x00000000053F0000-0x0000000005744000-memory.dmp

Filesize
3.3MB

Download
memory/2964-87-0x0000000006D80000-0x0000000006D8A000-memory.dmp

Filesize
40KB

Download
memory/2964-88-0x0000000006F90000-0x0000000007026000-memory.dmp

Filesize
600KB

Download
memory/2964-22-0x0000000005380000-0x00000000053E6000-memory.dmp

Filesize
408KB

Download
memory/2964-21-0x0000000005310000-0x0000000005376000-memory.dmp

Filesize
408KB

Download
memory/2964-91-0x0000000006F50000-0x0000000006F64000-memory.dmp

Filesize
80KB

Download
memory/2964-92-0x0000000007050000-0x000000000706A000-memory.dmp

Filesize
104KB

Download
memory/2964-93-0x0000000007030000-0x0000000007038000-memory.dmp

Filesize
32KB

Download
memory/2964-20-0x0000000004AB0000-0x0000000004AD2000-memory.dmp

Filesize
136KB

Download
memory/2964-101-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4804-73-0x0000000006DA0000-0x0000000006DBE000-memory.dmp

Filesize
120KB

Download
memory/4804-100-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4804-35-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4804-90-0x0000000007DA0000-0x0000000007DAE000-memory.dmp

Filesize
56KB

Download
memory/4804-89-0x0000000007D70000-0x0000000007D81000-memory.dmp

Filesize
68KB

Download
memory/4804-28-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download
memory/4804-63-0x0000000075860000-0x00000000758AC000-memory.dmp

Filesize
304KB

Download
memory/4804-62-0x0000000007A40000-0x0000000007A72000-memory.dmp

Filesize
200KB

Download
memory/4804-29-0x0000000074FB0000-0x0000000075760000-memory.dmp

Filesize
7.7MB

Download