remcos | 31542c2f7fd0a91f93aa7f3b9cae22f0a22290d3d6b55040fe5e1baf2891deee

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-08-2024 13:53

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General

Target

PO.34JK.exe
Size

992KB
MD5

84f5fd95c890c91277e7df55814ebd2a
SHA1

c2f46d2bba69f1a136ee0bedc95d790294d588ba
SHA256

d80ce34f15564cae781c02bc3ee2f25a8f44e6ae54ba162e5f9027a7dd43b071
SHA512

06ef0d02eee2313eac8a05a365d1096691167990b530039d16e5ae4baff37607bb5ad1ac55069195afbf600de3824921da75a930a5413d038bc88732b3d27d8e
SSDEEP

24576:1FBGzS58063NMqy03IS2MVm+i/IORHmY/9k1iobs7SBkfk4Mt:1Frsl4Um+LsGaS1K0V4M

Score

10^/10

remcos remotehost discovery execution rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

91.92.241.131:14646

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-9EXO78
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 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1980	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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	PO.34JK.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 2536	2636	PO.34JK.exe	98

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 4 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	PO.34JK.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO.34JK.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
1104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2636	PO.34JK.exe
2636	PO.34JK.exe
2636	PO.34JK.exe
2636	PO.34JK.exe
2636	PO.34JK.exe
2636	PO.34JK.exe
1980	powershell.exe
2636	PO.34JK.exe
1980	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2636	PO.34JK.exe
Token: SeDebugPrivilege	1980	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 1980	2636	PO.34JK.exe	94
PID 2636 wrote to memory of 1980	2636	PO.34JK.exe	94
PID 2636 wrote to memory of 1980	2636	PO.34JK.exe	94
PID 2636 wrote to memory of 1104	2636	PO.34JK.exe	96
PID 2636 wrote to memory of 1104	2636	PO.34JK.exe	96
PID 2636 wrote to memory of 1104	2636	PO.34JK.exe	96
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98
PID 2636 wrote to memory of 2536	2636	PO.34JK.exe	98

C:\Users\Admin\AppData\Local\Temp\PO.34JK.exe
"C:\Users\Admin\AppData\Local\Temp\PO.34JK.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:2636
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\bBbtmFrit.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1980
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bBbtmFrit" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1CAB.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1104
- C:\Users\Admin\AppData\Local\Temp\PO.34JK.exe
  "C:\Users\Admin\AppData\Local\Temp\PO.34JK.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2536

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\Temp\__PSScriptPolicyTest_weic553x.ubh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp1CAB.tmp

Filesize
1KB

MD5
e27d776e1bb1f74dcc09c092cf7f582a

SHA1
903bd144a0ba466e9ebf8c9d8d73bb1c26a64ac2

SHA256
6bc65a27e50e0f72b2f357ef05f301bedaa614215f21e7603aa1976a2b3c468e

SHA512
753ec63e2e01c862b5832c06f3a964d10f98b46a22e7567710a295ab3c0cc10f4f574e69ef6a432abf3061bd6f1e69106155be3c28c4a0ffa7ca921c1948f69c

Download Submit
memory/1980-67-0x00000000071A0000-0x00000000071AA000-memory.dmp

Filesize
40KB

Download
memory/1980-68-0x00000000073B0000-0x0000000007446000-memory.dmp

Filesize
600KB

Download
memory/1980-76-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1980-73-0x0000000007450000-0x0000000007458000-memory.dmp

Filesize
32KB

Download
memory/1980-72-0x0000000007470000-0x000000000748A000-memory.dmp

Filesize
104KB

Download
memory/1980-71-0x0000000007370000-0x0000000007384000-memory.dmp

Filesize
80KB

Download
memory/1980-70-0x0000000007360000-0x000000000736E000-memory.dmp

Filesize
56KB

Download
memory/1980-69-0x0000000007330000-0x0000000007341000-memory.dmp

Filesize
68KB

Download
memory/1980-66-0x0000000007130000-0x000000000714A000-memory.dmp

Filesize
104KB

Download
memory/1980-65-0x0000000007780000-0x0000000007DFA000-memory.dmp

Filesize
6.5MB

Download
memory/1980-64-0x0000000007010000-0x00000000070B3000-memory.dmp

Filesize
652KB

Download
memory/1980-53-0x0000000070CC0000-0x0000000070D0C000-memory.dmp

Filesize
304KB

Download
memory/1980-18-0x0000000002510000-0x0000000002546000-memory.dmp

Filesize
216KB

Download
memory/1980-19-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1980-20-0x0000000005070000-0x0000000005698000-memory.dmp

Filesize
6.2MB

Download
memory/1980-21-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1980-63-0x0000000006390000-0x00000000063AE000-memory.dmp

Filesize
120KB

Download
memory/1980-23-0x0000000004E30000-0x0000000004E52000-memory.dmp

Filesize
136KB

Download
memory/1980-25-0x0000000004FB0000-0x0000000005016000-memory.dmp

Filesize
408KB

Download
memory/1980-24-0x0000000004ED0000-0x0000000004F36000-memory.dmp

Filesize
408KB

Download
memory/1980-51-0x0000000005E40000-0x0000000005E8C000-memory.dmp

Filesize
304KB

Download
memory/1980-50-0x0000000005E10000-0x0000000005E2E000-memory.dmp

Filesize
120KB

Download
memory/1980-32-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/1980-52-0x00000000063F0000-0x0000000006422000-memory.dmp

Filesize
200KB

Download
memory/1980-39-0x00000000057E0000-0x0000000005B34000-memory.dmp

Filesize
3.3MB

Download
memory/2536-27-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-47-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-80-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-33-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-77-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-84-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-83-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-26-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-46-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-82-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-30-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-78-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-85-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-79-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2536-45-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2636-1-0x0000000000360000-0x000000000045E000-memory.dmp

Filesize
1016KB

Download
memory/2636-9-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2636-8-0x0000000006790000-0x00000000067AA000-memory.dmp

Filesize
104KB

Download
memory/2636-7-0x0000000006680000-0x0000000006766000-memory.dmp

Filesize
920KB

Download
memory/2636-6-0x0000000005110000-0x00000000051AC000-memory.dmp

Filesize
624KB

Download
memory/2636-5-0x0000000004E60000-0x0000000004E6A000-memory.dmp

Filesize
40KB

Download
memory/2636-4-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2636-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

Filesize
584KB

Download
memory/2636-44-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2636-12-0x0000000006140000-0x0000000006150000-memory.dmp

Filesize
64KB

Download
memory/2636-13-0x0000000006270000-0x0000000006330000-memory.dmp

Filesize
768KB

Download
memory/2636-2-0x0000000005490000-0x0000000005A34000-memory.dmp

Filesize
5.6MB

Download
memory/2636-10-0x00000000744D0000-0x0000000074C80000-memory.dmp

Filesize
7.7MB

Download
memory/2636-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2636-11-0x0000000005100000-0x000000000510C000-memory.dmp

Filesize
48KB

Download