remcos | 0c3d4871dc7316ae787156a859c22edfd6876458295e5350a6ed09f72e8b2e19

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7v20210408
submitted
06/10/2021, 07:30

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General

Target
INV.DHL202,PDF.exe
Size 714KB
Sample211006-jbwpcaaga5
SHA256 0c3d4871dc7316ae787156a859c22edfd6876458295e5350a6ed09f72e8b2e19
MD5 a78e43d98ed0c74651d35be3ac010a9e
SHA1 52515307d1edfcc0f1a47ba22f3f3a2930257422
SHA512 2600831827f6843e8fd4193635554e626f643c953cf8325d9c2fdad23af792e08bd0ec181060cf33071310bc11f68f71f9bf4acbc589627afe932a1160661e43
MD5 SHA1 SHA512

Score

10^/10

remcos biz logs persistence rat

Malware Config

Extracted

Family

remcos

Version

3.2.1 Pro

Botnet

Biz Logs

blessthychild.hopto.org:6344

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-Y73HNI
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
notepad;solitaire;

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Zhgsbxj = "C:\\Users\\Public\\Libraries\\jxbsghZ.url"	INV.DHL202,PDF.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry

T1112

pid	Process
1536	reg.exe
1672	reg.exe
1084	reg.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1972	1992	INV.DHL202,PDF.exe	27
PID 1992 wrote to memory of 1708	1992	INV.DHL202,PDF.exe	28
PID 1992 wrote to memory of 1708	1992	INV.DHL202,PDF.exe	28
PID 1992 wrote to memory of 1708	1992	INV.DHL202,PDF.exe	28
PID 1992 wrote to memory of 1708	1992	INV.DHL202,PDF.exe	28
PID 1708 wrote to memory of 1760	1708	cmd.exe	30
PID 1708 wrote to memory of 1760	1708	cmd.exe	30
PID 1708 wrote to memory of 1760	1708	cmd.exe	30
PID 1708 wrote to memory of 1760	1708	cmd.exe	30
PID 1760 wrote to memory of 1536	1760	cmd.exe	32
PID 1760 wrote to memory of 1536	1760	cmd.exe	32
PID 1760 wrote to memory of 1536	1760	cmd.exe	32
PID 1760 wrote to memory of 1536	1760	cmd.exe	32
PID 1760 wrote to memory of 1672	1760	cmd.exe	33
PID 1760 wrote to memory of 1672	1760	cmd.exe	33
PID 1760 wrote to memory of 1672	1760	cmd.exe	33
PID 1760 wrote to memory of 1672	1760	cmd.exe	33
PID 1760 wrote to memory of 792	1760	cmd.exe	34
PID 1760 wrote to memory of 792	1760	cmd.exe	34
PID 1760 wrote to memory of 792	1760	cmd.exe	34
PID 1760 wrote to memory of 792	1760	cmd.exe	34
PID 1992 wrote to memory of 1816	1992	INV.DHL202,PDF.exe	35
PID 1992 wrote to memory of 1816	1992	INV.DHL202,PDF.exe	35
PID 1992 wrote to memory of 1816	1992	INV.DHL202,PDF.exe	35
PID 1992 wrote to memory of 1816	1992	INV.DHL202,PDF.exe	35
PID 1816 wrote to memory of 1084	1816	cmd.exe	37
PID 1816 wrote to memory of 1084	1816	cmd.exe	37
PID 1816 wrote to memory of 1084	1816	cmd.exe	37
PID 1816 wrote to memory of 1084	1816	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\INV.DHL202,PDF.exe
"C:\Users\Admin\AppData\Local\Temp\INV.DHL202,PDF.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\logagent.exe
  C:\Windows\System32\logagent.exe
  2⤵
  PID:1972
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Public\Trast.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1708
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1760
  - - C:\Windows\SysWOW64\reg.exe
      reg delete hkcu\Environment /v windir /f
      4⤵
      Modifies registry key
      PID:1536
  - - C:\Windows\SysWOW64\reg.exe
      reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\KDECO.bat reg delete hkcu\Environment /v windir /f && REM "
      4⤵
      Modifies registry key
      PID:1672
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
      4⤵
      PID:792
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Public\nest.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\SysWOW64\reg.exe
    reg delete hkcu\Environment /v windir /f
    3⤵
    - Modifies registry key
    PID:1084

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1972-72-0x00000000000C0000-0x00000000000C1000-memory.dmp

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memory/1972-73-0x0000000000140000-0x0000000000141000-memory.dmp

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memory/1972-74-0x00000000001D0000-0x00000000001D1000-memory.dmp

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memory/1972-75-0x0000000072600000-0x000000007267C000-memory.dmp

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memory/1972-76-0x00000000002B0000-0x0000000000329000-memory.dmp

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memory/1992-60-0x0000000075B31000-0x0000000075B33000-memory.dmp

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memory/1992-61-0x0000000000230000-0x0000000000231000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads