remcos | a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178

General

Target

ungziped_file.exe
Size

899KB
MD5

410076dd0a643306b7991a32d9580143
SHA1

7c40be225169cf017cbdfe52ba8225b836dacf4c
SHA256

a70404d3f9f9fc5e48ac266731e1b3b5a780ae9b0ba15e865418e5f908aa6178
SHA512

22ddfe95a188974b1b492c75f4c03d53a5668b52be1520a5cc5fb13915c346ca8485bc5b0678f47e0ad51acf1c4dcd0ffb711605821a5229cafcf07bdc338190
SSDEEP

24576:lHIQsBmLOmrolDJO1Y6xMgKlfizJxQxSAKwe3GO80g:CQsBMOmrwCoZitYSApkGh0g

Score

10^/10

remcos host discovery rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

oyo.work.gd:3142

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
pdf
mouse_option
false
mutex
jkm-I9KENP
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
ios
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
Suspicious use of SetThreadContext 1 IoCs

Processes:

ungziped_file.exe

description pid process target process

PID 2300 set thread context of 1764 2300 ungziped_file.exe ungziped_file.exe

description	pid	process	target process
PID 2300 set thread context of 1764	2300	ungziped_file.exe	ungziped_file.exe

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

Processes:

ungziped_file.exeungziped_file.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ungziped_file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ungziped_file.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

ungziped_file.exe

pid process

2300 ungziped_file.exe
2300 ungziped_file.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

ungziped_file.exe

description pid process

Token: SeDebugPrivilege 2300 ungziped_file.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ungziped_file.exe

pid process

1764 ungziped_file.exe

pid	process
2300	ungziped_file.exe
2300	ungziped_file.exe

description	pid	process
Token: SeDebugPrivilege	2300	ungziped_file.exe

pid	process
1764	ungziped_file.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

ungziped_file.exe

description	pid	process	target process
PID 2300 wrote to memory of 1796	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1796	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1796	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1796	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe
PID 2300 wrote to memory of 1764	2300	ungziped_file.exe	ungziped_file.exe

C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
"C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
  "C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
  2⤵
  PID:1796
- C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
  "C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
ad3af7bc92a01675824c30d8c4619334

SHA1
03ef067bf8dd08598aa72abaf7f41128892d8a3e

SHA256
2fe94db5db5caa98ce28ecf0d33bb80639fe65a1af2f0ae1af8e4774978248f9

SHA512
a47d8c7e73dc6af5699fb2658d8105ddcd63a88b739569136592491001b2b783ed067d5aa07da1b17e72d3755b880076ee724254740993538a5eddb49e748bd0

Download Submit
memory/1764-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-57-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-16-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1764-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1764-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2300-2-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2300-1-0x0000000000840000-0x0000000000926000-memory.dmp

Filesize
920KB

Download
memory/2300-5-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2300-0-0x00000000740CE000-0x00000000740CF000-memory.dmp

Filesize
4KB

Download
memory/2300-27-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2300-6-0x0000000004D30000-0x0000000004DF0000-memory.dmp

Filesize
768KB

Download
memory/2300-4-0x00000000740CE000-0x00000000740CF000-memory.dmp

Filesize
4KB

Download
memory/2300-3-0x0000000000520000-0x0000000000532000-memory.dmp

Filesize
72KB

Download

Analysis

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