remcos | 4573443acbca7a1f829d721f95c2944a6a2ddd97a4bf484fd993f748d298b285

General

Target

Quotation.exe
Size

705KB
MD5

b9f6829c06d90ae2987a7d4beb4ebf5d
SHA1

687b26e24d9bf836674ea0dbb82f47f38a7dd74d
SHA256

4573443acbca7a1f829d721f95c2944a6a2ddd97a4bf484fd993f748d298b285
SHA512

e6722cce136bc622358e15adcdecde8b10486cd11946e54e102cbc0373b19c9385f8586774f9299cdf97f6359920d02f321f52d140a7814fdec7fdb1c4947779

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

whatgodcannotdodoestnotexist.duckdns.org:2559

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:

Quotation.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Enorz = "C:\\Users\\Admin\\zronE.url"	Quotation.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

Quotation.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	Quotation.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	Quotation.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ieinstal.exe

pid process

608 ieinstal.exe

pid	process
608	ieinstal.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Quotation.exe

description	pid	process	target process
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe
PID 296 wrote to memory of 608	296	Quotation.exe	ieinstal.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:296

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:608

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

Install Root Certificate

1

T1130

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/296-2-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/608-3-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/608-4-0x0000000000000000-mapping.dmp

Download
memory/608-5-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download
memory/608-7-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/608-8-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download
memory/608-13-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/608-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads