remcos | d7c1a65e2a6bf3878bc533b7456775fd91e41ea88df4e1baee624f6fc0776d4c

General

Target

SVCL 주문 문의 #20201305,pdf.exe
Size

284KB
MD5

726053b1a0320bbb7d4401b7c58571ac
SHA1

aee9558877f8f150fbecb331a89311caa7fb33e6
SHA256

9c163291baa89e2279a2ab8c2db63f8566b3d0b49bbd3b5254673ad2708b0866
SHA512

54b286249b4836d7aae4626abcb23a85b10b26939f41fc601b8599657c8018acdb68880435248c21ba8b4d8e38c18b201ebd5560ddb45ad29ee8887152a9ed61

Score

10^/10

remcos jah bless coreentity rat rezer0

Malware Config

Extracted

Family

remcos

Version

2.5.0 Pro

Botnet

JAH BLESS

C2

godsfavoured.ddns.net:7213

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-52S6QD
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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1064-56-0x00000000008D0000-0x00000000008D8000-memory.dmp	coreentity

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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1064-57-0x00000000040D0000-0x00000000040FC000-memory.dmp	rezer0

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

SVCL 주문 문의 #20201305,pdf.exe

description pid process target process

PID 1064 set thread context of 1660 1064 SVCL 주문 문의 #20201305,pdf.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1808 schtasks.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SVCL 주문 문의 #20201305,pdf.exe

description pid process

Token: SeDebugPrivilege 1064 SVCL 주문 문의 #20201305,pdf.exe

description	pid	process	target process
PID 1064 set thread context of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe

pid	process
1808	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	1064	SVCL 주문 문의 #20201305,pdf.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

SVCL 주문 문의 #20201305,pdf.exe

description	pid	process	target process
PID 1064 wrote to memory of 1808	1064	SVCL 주문 문의 #20201305,pdf.exe	schtasks.exe
PID 1064 wrote to memory of 1808	1064	SVCL 주문 문의 #20201305,pdf.exe	schtasks.exe
PID 1064 wrote to memory of 1808	1064	SVCL 주문 문의 #20201305,pdf.exe	schtasks.exe
PID 1064 wrote to memory of 1808	1064	SVCL 주문 문의 #20201305,pdf.exe	schtasks.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe
PID 1064 wrote to memory of 1660	1064	SVCL 주문 문의 #20201305,pdf.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\SVCL 주문 문의 #20201305,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\SVCL 주문 문의 #20201305,pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HoUIWPHe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp16FB.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1808
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "{path}"
  2⤵
  PID:1660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Scripting

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp16FB.tmp

Filesize
1KB

MD5
daab428f688a859a25679e9994192e63

SHA1
ba1b1d23883b3ef5a416b82bae16d7c5f9744393

SHA256
7cafe61d0ed92691585ffd4d8489610633639d89c5e6711e99fb77359ee0f4f9

SHA512
d06754097995cd232f55a9e2834293b9fc38a8ead404278dd0955345f4c100d50310567d06c071dd5b86eed06d678de5be543acf5f6fea255276ad4df367b12e

Download Submit
memory/1064-55-0x00000000769D1000-0x00000000769D3000-memory.dmp

Filesize
8KB

Download
memory/1064-56-0x00000000008D0000-0x00000000008D8000-memory.dmp

Filesize
32KB

Download
memory/1064-57-0x00000000040D0000-0x00000000040FC000-memory.dmp

Filesize
176KB

Download
memory/1064-54-0x0000000000A00000-0x0000000000A4C000-memory.dmp

Filesize
304KB

Download
memory/1660-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-67-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-66-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-69-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-63-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-70-0x0000000000413A84-mapping.dmp

Download
memory/1660-73-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1660-74-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1808-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads