remcos | cfef9f30f8da5f456957bf769a949b0b0f7ce09cee85c13f5538cf97c7733213

General

Target

dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
Size

926KB
MD5

dd1fe5ff1b29ab6a49409f84862b522b
SHA1

82cb1b9e60a1a5c15264f31f070052f944a60562
SHA256

cfef9f30f8da5f456957bf769a949b0b0f7ce09cee85c13f5538cf97c7733213
SHA512

d6530182afc59f3b0025b1533bbb0c8b62f249b39dca3edb3bedbbe3baa6d09598e857226969c21b470abab09f9a31a85365d5744989328a00c03fa7691d0f85
SSDEEP

24576:b7qF3YD6Z7iYtU+wkxT6RfAhZK1H4S1hdsqdkmj:SieZ7iYtT6RCK1JCqemj

Score

10^/10

remcos remotehost discovery rat upx

Malware Config

Extracted

Family

remcos

Version

3.0.2 Pro

Botnet

RemoteHost

C2

176.111.174.14:2804

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
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-77IWIS
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
wikipedia;solitaire;

Signatures

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

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4984-12-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-13-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-15-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-19-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-17-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-16-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral2/memory/4984-20-0x0000000000400000-0x0000000000481000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3600 set thread context of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98

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	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3600 wrote to memory of 3488	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	96
PID 3600 wrote to memory of 3488	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	96
PID 3600 wrote to memory of 3488	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	96
PID 3600 wrote to memory of 5020	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	97
PID 3600 wrote to memory of 5020	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	97
PID 3600 wrote to memory of 5020	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	97
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98
PID 3600 wrote to memory of 4984	3600	dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe	98

C:\Users\Admin\AppData\Local\Temp\dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd1fe5ff1b29ab6a49409f84862b522b_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3600
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:3488
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  PID:5020
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4984

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

memory/3600-10-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3600-18-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3600-2-0x0000000002BD0000-0x0000000002C6C000-memory.dmp

Filesize
624KB

Download
memory/3600-3-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/3600-4-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/3600-5-0x0000000002C70000-0x0000000002C7A000-memory.dmp

Filesize
40KB

Download
memory/3600-6-0x0000000005160000-0x00000000051B6000-memory.dmp

Filesize
344KB

Download
memory/3600-0-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/3600-8-0x0000000005200000-0x000000000520A000-memory.dmp

Filesize
40KB

Download
memory/3600-1-0x00000000005D0000-0x00000000006BE000-memory.dmp

Filesize
952KB

Download
memory/3600-7-0x0000000074EE0000-0x0000000075690000-memory.dmp

Filesize
7.7MB

Download
memory/3600-11-0x0000000005D80000-0x0000000005DEC000-memory.dmp

Filesize
432KB

Download
memory/3600-9-0x0000000074EEE000-0x0000000074EEF000-memory.dmp

Filesize
4KB

Download
memory/4984-17-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-15-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-13-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-19-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-12-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-16-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/4984-20-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download

Analysis

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