remcos | 6cdb03bc316fbf184d610d24d85ca86ec2269413ae8ae8ac87f296afb08dacea

General

Target

ae8ba034c111e338ffc8cced610e23c7.exe
Size

724KB
MD5

ae8ba034c111e338ffc8cced610e23c7
SHA1

edfd786403ebea26e612b0240b1ce980f170f245
SHA256

6cdb03bc316fbf184d610d24d85ca86ec2269413ae8ae8ac87f296afb08dacea
SHA512

bbae7a78743ded59170bab7fa5a2a240ab24fbe065f39d0c00d13655fefba4074d23e952ca994945a722f24dedee6d59c8d2ca0569f2497a1e3f82b1490c2b42

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

4sureme.ddns.net:4902

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:

ae8ba034c111e338ffc8cced610e23c7.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rvchn = "C:\\Users\\Admin\\nhcvR.url"	ae8ba034c111e338ffc8cced610e23c7.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

ae8ba034c111e338ffc8cced610e23c7.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	ae8ba034c111e338ffc8cced610e23c7.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	ae8ba034c111e338ffc8cced610e23c7.exe

Script User-Agent 2 IoCs

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

Processes:

description	flow	ioc
HTTP User-Agent header	5	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ieinstal.exe

pid process

1592 ieinstal.exe

pid	process
1592	ieinstal.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

ae8ba034c111e338ffc8cced610e23c7.exe

description	pid	process	target process
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe
PID 1656 wrote to memory of 1592	1656	ae8ba034c111e338ffc8cced610e23c7.exe	ieinstal.exe

C:\Users\Admin\AppData\Local\Temp\ae8ba034c111e338ffc8cced610e23c7.exe
"C:\Users\Admin\AppData\Local\Temp\ae8ba034c111e338ffc8cced610e23c7.exe"
1⤵
- Adds Run key to start application
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1656

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1592

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

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Downloads

memory/1592-3-0x0000000000090000-0x0000000000091000-memory.dmp

Filesize
4KB

Download
memory/1592-4-0x0000000000000000-mapping.dmp

Download
memory/1592-5-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1592-7-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1592-8-0x0000000074D11000-0x0000000074D13000-memory.dmp

Filesize
8KB

Download
memory/1592-12-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/1592-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1656-2-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads