remcos | 345a3a6d237b412a796b28b93018e1b55a998caaa6d3f5ff0cd57e390f9ac247

General

Target

SPT DRINGENDE BESTELLUNG _876453,pdf.exe
Size

713KB
MD5

6085b6626841002f150b9db8778abd79
SHA1

dd0d3b976528fd3c9dbc314c91f1da20f552b8f1
SHA256

345a3a6d237b412a796b28b93018e1b55a998caaa6d3f5ff0cd57e390f9ac247
SHA512

0e60753341137cf2d224517d927b8ff2c58b8a5dd898664ff32cae18e626a8bec8db6a65d3a8efe08a6a463d5bb45ba8ba17a7d20c642aeaeeaf9cfc78eaf164

Score

10^/10

remcos celebration persistence rat suricata

Malware Config

Extracted

Family

remcos

Version

3.2.1 Pro

Botnet

CELEBRATION

C2

ongod4ever.ddns.net:3030

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-FCUJUB
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
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata: ET MALWARE Remocs 3.x Unencrypted Checkin
suricata
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata: ET MALWARE Remocs 3.x Unencrypted Server Response
suricata

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SPT DRINGENDE BESTELLUNG _876453,pdf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Aikwsjyl = "C:\\Users\\Public\\Libraries\\lyjswkiA.url"	SPT DRINGENDE BESTELLUNG _876453,pdf.exe

Modifies registry key 1 TTPs 3 IoCs

Modify Registry
T1112

Processes:

reg.exereg.exereg.exe

pid process

3156 reg.exe
740 reg.exe
1084 reg.exe

pid	process
3156	reg.exe
740	reg.exe
1084	reg.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

SPT DRINGENDE BESTELLUNG _876453,pdf.execmd.execmd.execmd.exe

description	pid	process	target process
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3548	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	secinit.exe
PID 3128 wrote to memory of 3996	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 3128 wrote to memory of 3996	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 3128 wrote to memory of 3996	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 3996 wrote to memory of 3480	3996	cmd.exe	cmd.exe
PID 3996 wrote to memory of 3480	3996	cmd.exe	cmd.exe
PID 3996 wrote to memory of 3480	3996	cmd.exe	cmd.exe
PID 3480 wrote to memory of 3156	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 3156	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 3156	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 740	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 740	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 740	3480	cmd.exe	reg.exe
PID 3480 wrote to memory of 2244	3480	cmd.exe	schtasks.exe
PID 3480 wrote to memory of 2244	3480	cmd.exe	schtasks.exe
PID 3480 wrote to memory of 2244	3480	cmd.exe	schtasks.exe
PID 3128 wrote to memory of 988	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 3128 wrote to memory of 988	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 3128 wrote to memory of 988	3128	SPT DRINGENDE BESTELLUNG _876453,pdf.exe	cmd.exe
PID 988 wrote to memory of 1084	988	cmd.exe	reg.exe
PID 988 wrote to memory of 1084	988	cmd.exe	reg.exe
PID 988 wrote to memory of 1084	988	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\SPT DRINGENDE BESTELLUNG _876453,pdf.exe
"C:\Users\Admin\AppData\Local\Temp\SPT DRINGENDE BESTELLUNG _876453,pdf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3128

C:\Windows\SysWOW64\secinit.exe
C:\Windows\System32\secinit.exe
2⤵
PID:3548

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Public\Trast.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:3996

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /K C:\Users\Public\UKO.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:3480

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
4⤵
- Modifies registry key
PID:3156

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:740

C:\Windows\SysWOW64\schtasks.exe
schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
4⤵
PID:2244

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Public\nest.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\reg.exe
reg delete hkcu\Environment /v windir /f
3⤵
- Modifies registry key
PID:1084

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\Trast.bat
MD5
4068c9f69fcd8a171c67f81d4a952a54

SHA1
4d2536a8c28cdcc17465e20d6693fb9e8e713b36

SHA256
24222300c78180b50ed1f8361ba63cb27316ec994c1c9079708a51b4a1a9d810

SHA512
a64f9319acc51fffd0491c74dcd9c9084c2783b82f95727e4bfe387a8528c6dcf68f11418e88f1e133d115daf907549c86dd7ad866b2a7938add5225fbb2811d

Download Submit
C:\Users\Public\UKO.bat
MD5
eaf8d967454c3bbddbf2e05a421411f8

SHA1
6170880409b24de75c2dc3d56a506fbff7f6622c

SHA256
f35f2658455a2e40f151549a7d6465a836c33fa9109e67623916f889849eac56

SHA512
fe5be5c673e99f70c93019d01abb0a29dd2ecf25b2d895190ff551f020c28e7d8f99f65007f440f0f76c5bcac343b2a179a94d190c938ea3b9e1197890a412e9

Download Submit
C:\Users\Public\nest.bat
MD5
8ada51400b7915de2124baaf75e3414c

SHA1
1a7b9db12184ab7fd7fce1c383f9670a00adb081

SHA256
45aa3957c29865260a78f03eef18ae9aebdbf7bea751ecc88be4a799f2bb46c7

SHA512
9afc138157a4565294ca49942579cdb6f5d8084e56f9354738de62b585f4c0fa3e7f2cbc9541827f2084e3ff36c46eed29b46f5dd2444062ffcd05c599992e68

Download Submit
memory/740-121-0x0000000000000000-mapping.dmp

Download
memory/988-128-0x0000000000000000-mapping.dmp

Download
memory/1084-130-0x0000000000000000-mapping.dmp

Download
memory/2244-122-0x0000000000000000-mapping.dmp

Download
memory/3128-114-0x00000000004C0000-0x000000000060A000-memory.dmp

Filesize
1.3MB

Download
memory/3156-120-0x0000000000000000-mapping.dmp

Download
memory/3480-118-0x0000000000000000-mapping.dmp

Download
memory/3548-123-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/3548-125-0x0000000010590000-0x000000001060C000-memory.dmp

Filesize
496KB

Download
memory/3548-126-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/3548-127-0x00000000008F0000-0x0000000000969000-memory.dmp

Filesize
484KB

Download
memory/3548-124-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/3548-115-0x0000000000000000-mapping.dmp

Download
memory/3996-116-0x0000000000000000-mapping.dmp

Download

Analysis

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