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

description	pid	Process	procid_target
PID 1276 set thread context of 2776	1276	ungziped_file.exe	104

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1276	ungziped_file.exe
1276	ungziped_file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1276	ungziped_file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2776	ungziped_file.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 1692	1276	ungziped_file.exe	103
PID 1276 wrote to memory of 1692	1276	ungziped_file.exe	103
PID 1276 wrote to memory of 1692	1276	ungziped_file.exe	103
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104
PID 1276 wrote to memory of 2776	1276	ungziped_file.exe	104

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:1276
- C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe
  "C:\Users\Admin\AppData\Local\Temp\ungziped_file.exe"
  2⤵
  PID:1692
- 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:2776

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

Loading Replay Monitor...

Downloads

C:\ProgramData\pdf\logs.dat

Filesize
144B

MD5
97d3c6d38e179429178dddb752040b34

SHA1
e183ca9c79e151eab50d18e2514592cc504e9f90

SHA256
fa336b989eeac3b0b0c417dba74db172a5a9453deef76875a5575a208aedd6ca

SHA512
4a2f07488999a39f2eb66cf1b212cd5bf2d17b964adeaaa1a0c57e0ed3bb2d53b82c2d5c437e63bb8560b12c61c01b907c3b21d0b279ec37ef0b167ed7c92677

Download Submit
memory/1276-6-0x0000000004E60000-0x0000000004E6A000-memory.dmp

Filesize
40KB

Download
memory/1276-2-0x00000000052A0000-0x0000000005844000-memory.dmp

Filesize
5.6MB

Download
memory/1276-3-0x0000000004D90000-0x0000000004E22000-memory.dmp

Filesize
584KB

Download
memory/1276-4-0x0000000004ED0000-0x0000000004F6C000-memory.dmp

Filesize
624KB

Download
memory/1276-5-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/1276-0-0x000000007462E000-0x000000007462F000-memory.dmp

Filesize
4KB

Download
memory/1276-7-0x00000000060F0000-0x0000000006102000-memory.dmp

Filesize
72KB

Download
memory/1276-8-0x000000007462E000-0x000000007462F000-memory.dmp

Filesize
4KB

Download
memory/1276-9-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/1276-10-0x0000000006300000-0x00000000063C0000-memory.dmp

Filesize
768KB

Download
memory/1276-1-0x00000000002C0000-0x00000000003A6000-memory.dmp

Filesize
920KB

Download
memory/1276-21-0x0000000074620000-0x0000000074DD0000-memory.dmp

Filesize
7.7MB

Download
memory/2776-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-22-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing