remcos | e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0

General

Target

e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe
Size

1.0MB
MD5

d48f082a4ddfaffaffc718bbbe13daac
SHA1

0cdea96bfbbbddb879f35ced74620292c2cbf687
SHA256

e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0
SHA512

558cdc2c80a6d9789d0faece85d17c37171305af4324c0176b369cdf4bde6472c07547ece539493ba5c79c6d2d9ca3699aff97182fee4ffff71f0436e7376aba
SSDEEP

24576:xYTYWWpQP+WMKUwMqROO54Nhi3TJgyYjnwSIeOhmhBKRK:xYTY9pA/MKUzkLYjmMK

Score

10^/10

remcos 1122023 persistence rat

Malware Config

Extracted

Family

remcos

Botnet

1122023

C2

nikahuve.ac.ug:65214

kalskala.ac.ug:65214

tuekisaa.ac.ug:65214

parthaha.ac.ug:65214

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
vgbvfxs.dat
keylog_flag
false
keylog_folder
fsscbas
keylog_path
%AppData%
mouse_option
false
mutex
fdsgsdmhj-9K01C1
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

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-1-5-21-4063495947-34355257-727531523-1000\Control Panel\International\Geo\Nation	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wdzblwjl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Amlcowp\\Wdzblwjl.exe\""	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1484 set thread context of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
672	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe
Token: SeDebugPrivilege	672	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
320	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 284	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	27
PID 1484 wrote to memory of 284	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	27
PID 1484 wrote to memory of 284	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	27
PID 1484 wrote to memory of 284	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	27
PID 284 wrote to memory of 672	284	cmd.exe	29
PID 284 wrote to memory of 672	284	cmd.exe	29
PID 284 wrote to memory of 672	284	cmd.exe	29
PID 284 wrote to memory of 672	284	cmd.exe	29
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30
PID 1484 wrote to memory of 320	1484	e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe	30

C:\Users\Admin\AppData\Local\Temp\e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe
"C:\Users\Admin\AppData\Local\Temp\e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:284
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -ENC cwBlAHQALQBtAHAAcAByAGUAZgBlAHIAZQBuAGMAZQAgAC0AZQB4AGMAbAB1AHMAaQBvAG4AcABhAHQAaAAgAEMAOgBcAA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:672
- C:\Users\Admin\AppData\Local\Temp\e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe
  C:\Users\Admin\AppData\Local\Temp\e623fb7f8f26f1222cc777af5a585acbf9cc5e1f72f09aeae3dcee8c518864e0.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:320

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/320-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-82-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/672-62-0x000000006EBD0000-0x000000006F17B000-memory.dmp

Filesize
5.7MB

Download
memory/672-80-0x000000006EBD0000-0x000000006F17B000-memory.dmp

Filesize
5.7MB

Download
memory/1484-56-0x0000000004950000-0x0000000004A58000-memory.dmp

Filesize
1.0MB

Download
memory/1484-54-0x0000000000E50000-0x0000000000F5A000-memory.dmp

Filesize
1.0MB

Download
memory/1484-55-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

Filesize
8KB

Download
memory/1484-58-0x0000000004AA0000-0x0000000004B32000-memory.dmp

Filesize
584KB

Download
memory/1484-57-0x0000000004780000-0x00000000047FE000-memory.dmp

Filesize
504KB

Download

Analysis

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