remcos | c8691ad7b172874c5bfbd1fb9006613973e551771367ff7d538b29ca2f7bf6c3

Analysis

max time kernel
179s
max time network
180s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-10-2024 14:04

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General

Target

11b94847a9272d020e13c6485515dee1.exe
Size

331KB
MD5

11b94847a9272d020e13c6485515dee1
SHA1

34c60c1638dfa9b2f9e07e6dd70a2014547a4ade
SHA256

c8691ad7b172874c5bfbd1fb9006613973e551771367ff7d538b29ca2f7bf6c3
SHA512

a2de8898cbd1db9273f1470728f7c1832e5b681a1d72ec8bfb91654cb99c2e4d8b7e92c157b755f3dc7b5a5437be3717bb9726575e01af052cc46b6da0cccb5d
SSDEEP

6144:n/mbJQBuSXHz2bKnb0lQUtmEZrdcqLKRDgdjAmiYFp5jP1k0V:eNt8irremKxgdZiYxjP1jV

Score

10^/10

remcos zepta discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

ZEPTA

platino89.con-ip.com:1836

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
XCVXCGFGFGFDG-TEGKLX
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

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 1492 created 3532	1492	11b94847a9272d020e13c6485515dee1.exe	56

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mjjow = "C:\\Users\\Admin\\AppData\\Roaming\\Mjjow.exe"	11b94847a9272d020e13c6485515dee1.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1492 set thread context of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90

System Location Discovery: System Language Discovery 1 TTPs 2 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	11b94847a9272d020e13c6485515dee1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1492	11b94847a9272d020e13c6485515dee1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	11b94847a9272d020e13c6485515dee1.exe
Token: SeDebugPrivilege	1492	11b94847a9272d020e13c6485515dee1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4308	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90
PID 1492 wrote to memory of 4308	1492	11b94847a9272d020e13c6485515dee1.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3532
- C:\Users\Admin\AppData\Local\Temp\11b94847a9272d020e13c6485515dee1.exe
  "C:\Users\Admin\AppData\Local\Temp\11b94847a9272d020e13c6485515dee1.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1492
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4308

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=4272,i,13995403245988825027,7033610968827661507,262144 --variations-seed-version --mojo-platform-channel-handle=4240 /prefetch:8
1⤵
PID:5020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

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\remcos\logs.dat

Filesize
144B

MD5
c27755ca75b87b9063739e1ac2770d78

SHA1
6f77d5daaef6ae984f002a38d4977b03b473db2a

SHA256
b57588c3d3a5be8b6395a314f825ceac6d0a3186438a29b3e83889e7e14a69a4

SHA512
8cafe6fc276dc8f6402ae1f8c5bdd28854bb5ebd4d657b2a6ccf48213d1fedaa76546b77e22937987fd59cd3ac07fac6a5efc4d080b31c7cfc4f94d06f480e9c

Download Submit
memory/1492-0-0x00000000743CE000-0x00000000743CF000-memory.dmp

Filesize
4KB

Download
memory/1492-1-0x0000000000910000-0x0000000000968000-memory.dmp

Filesize
352KB

Download
memory/1492-2-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1492-3-0x0000000005CE0000-0x0000000005DFE000-memory.dmp

Filesize
1.1MB

Download
memory/1492-11-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-19-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-55-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-67-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-65-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-64-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-61-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-59-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-57-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-53-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-51-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-49-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-47-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-45-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-43-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-41-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-39-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-37-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-36-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-31-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-29-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-27-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-25-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-23-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-21-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-17-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-15-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-13-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-9-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-7-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-5-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-33-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-4-0x0000000005CE0000-0x0000000005DF7000-memory.dmp

Filesize
1.1MB

Download
memory/1492-1078-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1492-1079-0x0000000006090000-0x0000000006128000-memory.dmp

Filesize
608KB

Download
memory/1492-1080-0x0000000005E60000-0x0000000005EAC000-memory.dmp

Filesize
304KB

Download
memory/1492-1081-0x00000000068C0000-0x0000000006E64000-memory.dmp

Filesize
5.6MB

Download
memory/1492-1082-0x0000000006290000-0x00000000062E4000-memory.dmp

Filesize
336KB

Download
memory/1492-1087-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1492-1089-0x00000000743CE000-0x00000000743CF000-memory.dmp

Filesize
4KB

Download
memory/1492-1090-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1492-1088-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/1492-1094-0x00000000743C0000-0x0000000074B70000-memory.dmp

Filesize
7.7MB

Download
memory/4308-1095-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4308-1102-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download