remcos | eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3

General

Target

eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe
Size

2.7MB
MD5

9fda0d7da41796012a1a0b676759ad10
SHA1

0ca6ee48a992db69e6b7399ba950a522dff901c6
SHA256

eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3
SHA512

9b6e38f621ea25ae93dac5c940105526aef21aaa64bc1e41813d7d40f9cc0fb8f45b47b208e80ee484ba5b8f77e84ad3193d86baa2f6463a416c2b96ee2fe8ad
SSDEEP

24576:cF/QN9k6T9Z/RM/vtJr0ymdA1HQe3gRBtA:cxQxTP/RAVR0y7l3gPtA

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
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.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	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 2508	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	30
PID 2420 wrote to memory of 2508	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	30
PID 2420 wrote to memory of 2508	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	30
PID 2420 wrote to memory of 2508	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	30
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2488	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	31
PID 2420 wrote to memory of 2504	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	32
PID 2420 wrote to memory of 2504	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	32
PID 2420 wrote to memory of 2504	2420	eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe	32

C:\Users\Admin\AppData\Local\Temp\eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe
"C:\Users\Admin\AppData\Local\Temp\eaf7c6e0789fc11c3fee10faa8821bfe0934f5ab771196f7898c60ad1532abb3N.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2420
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:2508
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2488
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2420 -s 648
  2⤵
  PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

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/2420-0-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/2420-1-0x0000000001060000-0x0000000001068000-memory.dmp

Filesize
32KB

Download
memory/2420-2-0x000000001B890000-0x000000001B95E000-memory.dmp

Filesize
824KB

Download
memory/2420-3-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2420-6-0x000007FEF5DE3000-0x000007FEF5DE4000-memory.dmp

Filesize
4KB

Download
memory/2420-7-0x000007FEF5DE0000-0x000007FEF67CC000-memory.dmp

Filesize
9.9MB

Download
memory/2488-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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