remcos | 7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee

General

Target

7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe
Size

455KB
MD5

60e18d4606431a33c406c1ad21ddc4e2
SHA1

f8e773f104fcfd6df48ee21591ce8890fd8942c5
SHA256

7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee
SHA512

00c74a249be8ac164be201161aceb35e272f007e65ea6d740043ba89a55a69b7a01283d50fd446e774df05f869d9d6418f8d82fff5422133a36bebc2f8faf22e
SSDEEP

6144:sPm7KDoBlJL4vhsEAC7rWzLKmVn4RIM0EeNXWizh/Kkc6k4qHVWO1XO/gvJ/j:IELksjq0KmFbEeJN1Kkc6xqHVlVj

Score

10^/10

remcos yavakosa discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Yavakosa

C2

198.23.227.212:32583

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
yava_vd.exe
copy_folder
yava
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-D7NPY6
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Executes dropped EXE 1 IoCs

pid	Process
2080	yava_vd.exe

Loads dropped DLL 2 IoCs

pid	Process
1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe
1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-D7NPY6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\yava\\yava_vd.exe\""	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-D7NPY6 = "\"C:\\Users\\Admin\\AppData\\Roaming\\yava\\yava_vd.exe\""	yava_vd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yava_vd.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 2080	1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe	30
PID 1832 wrote to memory of 2080	1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe	30
PID 1832 wrote to memory of 2080	1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe	30
PID 1832 wrote to memory of 2080	1832	7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe	30

C:\Users\Admin\AppData\Local\Temp\7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe
"C:\Users\Admin\AppData\Local\Temp\7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Users\Admin\AppData\Roaming\yava\yava_vd.exe
  "C:\Users\Admin\AppData\Roaming\yava\yava_vd.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:2080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

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

\Users\Admin\AppData\Roaming\yava\yava_vd.exe

Filesize
455KB

MD5
60e18d4606431a33c406c1ad21ddc4e2

SHA1
f8e773f104fcfd6df48ee21591ce8890fd8942c5

SHA256
7fce076ae6458c561dcb1e5cd6a1de47aa114d5758dc791f0a94402ac4a9f2ee

SHA512
00c74a249be8ac164be201161aceb35e272f007e65ea6d740043ba89a55a69b7a01283d50fd446e774df05f869d9d6418f8d82fff5422133a36bebc2f8faf22e

Download Submit
memory/1832-1-0x0000000002D20000-0x0000000002E20000-memory.dmp

Filesize
1024KB

Download
memory/1832-2-0x0000000000220000-0x000000000029A000-memory.dmp

Filesize
488KB

Download
memory/1832-3-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1832-16-0x0000000000220000-0x000000000029A000-memory.dmp

Filesize
488KB

Download
memory/1832-15-0x0000000002D20000-0x0000000002E20000-memory.dmp

Filesize
1024KB

Download
memory/1832-14-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/1832-13-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-21-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-26-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-19-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-22-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-23-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-24-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-25-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-20-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-27-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-28-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-29-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-30-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-31-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download
memory/2080-32-0x0000000000400000-0x0000000002B75000-memory.dmp

Filesize
39.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads