remcos | 8ddbf9769d71a2b946894307864aa35aee8afb86a469a6c032b7eaa1225bc720

General

Target

Jc7rIzvMGq2Y04X5z29E.exe
Size

1.1MB
MD5

b2ca9a4f140ad9b0c7d4ee5270f80457
SHA1

20a0bc87b558a4c1266f33b12f659f0e298d74cd
SHA256

8ddbf9769d71a2b946894307864aa35aee8afb86a469a6c032b7eaa1225bc720
SHA512

45d9f9c4aa3949cbebf2ccbb34bfc45843c81864cd9c3a510dd12d235b6d841537fcc1fd7749dbaf232bdd42513b4dd1ff9fcb79697f5cb0728f671718bd9996

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

style.ptbagasps.co.id:42024

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

Processes:

Jc7rIzvMGq2Y04X5z29E.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\Xbrcnt = "C:\\Users\\Public\\Libraries\\tncrbX.url"	Jc7rIzvMGq2Y04X5z29E.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

Jc7rIzvMGq2Y04X5z29E.exe

description	ioc	process
File opened (read-only)	\??\P:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\S:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\U:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\B:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\H:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\N:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\R:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\V:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\X:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\Z:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\E:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\F:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\G:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\J:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\L:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\M:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\O:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\T:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\A:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\I:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\K:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\Q:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\W:	Jc7rIzvMGq2Y04X5z29E.exe
File opened (read-only)	\??\Y:	Jc7rIzvMGq2Y04X5z29E.exe

Drops file in System32 directory 1 IoCs

Processes:

DpiScaling.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\DpiScaling.exe DpiScaling.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

Jc7rIzvMGq2Y04X5z29E.exe

description pid process target process

PID 4060 set thread context of 1116 4060 Jc7rIzvMGq2Y04X5z29E.exe DpiScaling.exe
Modifies registry class 1 IoCs

Processes:

DpiScaling.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings DpiScaling.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

DpiScaling.exe

pid process

1116 DpiScaling.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\DpiScaling.exe	DpiScaling.exe

description	pid	process	target process
PID 4060 set thread context of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	DpiScaling.exe

pid	process
1116	DpiScaling.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Jc7rIzvMGq2Y04X5z29E.exeDpiScaling.exe

description	pid	process	target process
PID 4060 wrote to memory of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe
PID 4060 wrote to memory of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe
PID 4060 wrote to memory of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe
PID 4060 wrote to memory of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe
PID 4060 wrote to memory of 1116	4060	Jc7rIzvMGq2Y04X5z29E.exe	DpiScaling.exe
PID 1116 wrote to memory of 2120	1116	DpiScaling.exe	WScript.exe
PID 1116 wrote to memory of 2120	1116	DpiScaling.exe	WScript.exe
PID 1116 wrote to memory of 2120	1116	DpiScaling.exe	WScript.exe

C:\Users\Admin\AppData\Local\Temp\Jc7rIzvMGq2Y04X5z29E.exe
"C:\Users\Admin\AppData\Local\Temp\Jc7rIzvMGq2Y04X5z29E.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\SysWOW64\DpiScaling.exe
C:\Windows\System32\DpiScaling.exe
2⤵
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1116

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\xvkrt.vbs"
3⤵
PID:2120

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

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\xvkrt.vbs
MD5
be074866409269e44265375472268ac8

SHA1
3ce9dd4ec73e549090df35e584489ca2b152baf8

SHA256
0611b95ccccd8a80ffff8e37791ef1f18338880c139ccd91795f0343a8cba78e

SHA512
10112d322c59501126b9c3a256fbce35f52be00578fc52d004b139fdd0a5555e3e07dfa8a6113e407c7668a9aa795869ed896e1cc30f3f06685825d9fe518d58

Download Submit
memory/1116-115-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1116-116-0x000000000042EEEF-mapping.dmp

Download
memory/1116-119-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/2120-120-0x0000000000000000-mapping.dmp

Download
memory/4060-114-0x0000000000680000-0x00000000007CA000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads