remcos | e29e2c1019428f23f92327c4608c6aa8038b39889432be5bb0c7ce96ba63bacb

General

Target

RFQ 412.24 10.09.exe
Size

1.8MB
MD5

9aefd01233c746cdcfb120001a2defd2
SHA1

599bb60793602a6fd2fae402dfc06d22d5a4a868
SHA256

97d26e3c4d9c3fffe1a29eb0ef84681bb843cd06223d84bc947185107be4bba0
SHA512

c4c072728ac7f12c127688f189f17201d3837e62d25cd6e6aca3f002c3182aa3374535cfc04b364fe944794a6058d09cb49ec7387ae3a731e37fbbb12800d425
SSDEEP

24576:2BuCDJRpDyeGykCiwDbdStLd+1yvNF2qU:2BDrxDGhDyFr

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:52121

officerem.duckdns.org:52121

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
Rmc-6GPUH1
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

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2308 set thread context of 492	2308	RFQ 412.24 10.09.exe	31

System Location Discovery: System Language Discovery 1 TTPs 1 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	wmplayer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 492	2308	RFQ 412.24 10.09.exe	31
PID 2308 wrote to memory of 2464	2308	RFQ 412.24 10.09.exe	32
PID 2308 wrote to memory of 2464	2308	RFQ 412.24 10.09.exe	32
PID 2308 wrote to memory of 2464	2308	RFQ 412.24 10.09.exe	32

C:\Users\Admin\AppData\Local\Temp\RFQ 412.24 10.09.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ 412.24 10.09.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:492
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2308 -s 640
  2⤵
  PID:2464

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/492-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/492-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-13-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-23-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-26-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/492-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2308-1-0x0000000001380000-0x000000000138A000-memory.dmp

Filesize
40KB

Download
memory/2308-24-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download
memory/2308-22-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2308-3-0x000000001B120000-0x000000001B1F0000-memory.dmp

Filesize
832KB

Download
memory/2308-0-0x000007FEF5413000-0x000007FEF5414000-memory.dmp

Filesize
4KB

Download
memory/2308-2-0x000007FEF5410000-0x000007FEF5DFC000-memory.dmp

Filesize
9.9MB

Download

Analysis

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