remcos | 1b8733a553b25ca6338c13d25d938778f515f4c87229f3b632077c450c36ea98

General

Target

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
Size

1.7MB
MD5

623b957f20ce6053878bcc86fc8b073e
SHA1

2f93c1e73f9a5470903663ecf1212789f95c8227
SHA256

1b8733a553b25ca6338c13d25d938778f515f4c87229f3b632077c450c36ea98
SHA512

14fa9df4a41795adcd32972e7319aadd1c85c8d913a6c35c4820b3332b748897fb523e59ce278fe30e334d56cd420e9f19b53976c443be0a87c966cc1374b6a5

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

ghdyuienah123.freedynamicdns.org:2006

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 2 IoCs

Processes:

win.exewin.exe

pid process

1584 win.exe
2356 win.exe

pid	process
1584	win.exe
2356	win.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exewin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\	win.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	win.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exewin.exe

pid	process
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe
1584	win.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exewin.exe

description	pid	process	target process
PID 2188 set thread context of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 1584 set thread context of 2356	1584	win.exe	win.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3996 1584 WerFault.exe win.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

196 timeout.exe
1764 timeout.exe

pid	pid_target	process	target process
3996	1584	WerFault.exe	win.exe

pid	process
196	timeout.exe
1764	timeout.exe

Modifies registry class 1 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exewin.exeWerFault.exe

pid	process
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
1584	win.exe
1584	win.exe
1584	win.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe
3996	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

win.exe

pid process

2356 win.exe

pid	process
2356	win.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exewin.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
Token: SeDebugPrivilege	1584	win.exe
Token: SeRestorePrivilege	3996	WerFault.exe
Token: SeBackupPrivilege	3996	WerFault.exe
Token: SeDebugPrivilege	3996	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

2356 win.exe

pid	process
2356	win.exe

Suspicious use of WriteProcessMemory 41 IoCs

Processes:

SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.execmd.exeSecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exeWScript.execmd.exewin.execmd.exe

description	pid	process	target process
PID 2188 wrote to memory of 4020	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	cmd.exe
PID 2188 wrote to memory of 4020	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	cmd.exe
PID 2188 wrote to memory of 4020	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	cmd.exe
PID 4020 wrote to memory of 196	4020	cmd.exe	timeout.exe
PID 4020 wrote to memory of 196	4020	cmd.exe	timeout.exe
PID 4020 wrote to memory of 196	4020	cmd.exe	timeout.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 2188 wrote to memory of 4076	2188	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
PID 4076 wrote to memory of 3648	4076	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	WScript.exe
PID 4076 wrote to memory of 3648	4076	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	WScript.exe
PID 4076 wrote to memory of 3648	4076	SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe	WScript.exe
PID 3648 wrote to memory of 3420	3648	WScript.exe	cmd.exe
PID 3648 wrote to memory of 3420	3648	WScript.exe	cmd.exe
PID 3648 wrote to memory of 3420	3648	WScript.exe	cmd.exe
PID 3420 wrote to memory of 1584	3420	cmd.exe	win.exe
PID 3420 wrote to memory of 1584	3420	cmd.exe	win.exe
PID 3420 wrote to memory of 1584	3420	cmd.exe	win.exe
PID 1584 wrote to memory of 800	1584	win.exe	cmd.exe
PID 1584 wrote to memory of 800	1584	win.exe	cmd.exe
PID 1584 wrote to memory of 800	1584	win.exe	cmd.exe
PID 800 wrote to memory of 1764	800	cmd.exe	timeout.exe
PID 800 wrote to memory of 1764	800	cmd.exe	timeout.exe
PID 800 wrote to memory of 1764	800	cmd.exe	timeout.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe
PID 1584 wrote to memory of 2356	1584	win.exe	win.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2188

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:4020

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:196

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.PackedNET.726.12479.23271.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4076

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:3648

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3420

C:\Users\Admin\AppData\Roaming\win.exe
C:\Users\Admin\AppData\Roaming\win.exe
5⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:800

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:1764

C:\Users\Admin\AppData\Roaming\win.exe
"C:\Users\Admin\AppData\Roaming\win.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1584 -s 1480
6⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3996

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
MD5
4a74e626596d6e66b4bbc59ee6848f2d

SHA1
047849ac8735ecc0943428c7cd5e00b52eee06ed

SHA256
98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

SHA512
1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
623b957f20ce6053878bcc86fc8b073e

SHA1
2f93c1e73f9a5470903663ecf1212789f95c8227

SHA256
1b8733a553b25ca6338c13d25d938778f515f4c87229f3b632077c450c36ea98

SHA512
14fa9df4a41795adcd32972e7319aadd1c85c8d913a6c35c4820b3332b748897fb523e59ce278fe30e334d56cd420e9f19b53976c443be0a87c966cc1374b6a5

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
623b957f20ce6053878bcc86fc8b073e

SHA1
2f93c1e73f9a5470903663ecf1212789f95c8227

SHA256
1b8733a553b25ca6338c13d25d938778f515f4c87229f3b632077c450c36ea98

SHA512
14fa9df4a41795adcd32972e7319aadd1c85c8d913a6c35c4820b3332b748897fb523e59ce278fe30e334d56cd420e9f19b53976c443be0a87c966cc1374b6a5

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
623b957f20ce6053878bcc86fc8b073e

SHA1
2f93c1e73f9a5470903663ecf1212789f95c8227

SHA256
1b8733a553b25ca6338c13d25d938778f515f4c87229f3b632077c450c36ea98

SHA512
14fa9df4a41795adcd32972e7319aadd1c85c8d913a6c35c4820b3332b748897fb523e59ce278fe30e334d56cd420e9f19b53976c443be0a87c966cc1374b6a5

Download Submit
memory/196-122-0x0000000000000000-mapping.dmp

Download
memory/800-139-0x0000000000000000-mapping.dmp

Download
memory/1584-141-0x0000000005640000-0x0000000005641000-memory.dmp

Filesize
4KB

Download
memory/1584-130-0x0000000000000000-mapping.dmp

Download
memory/1764-140-0x0000000000000000-mapping.dmp

Download
memory/2188-114-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/2188-120-0x0000000004C40000-0x0000000004C7E000-memory.dmp

Filesize
248KB

Download
memory/2188-123-0x00000000064F0000-0x00000000064F1000-memory.dmp

Filesize
4KB

Download
memory/2188-116-0x0000000004CA0000-0x0000000004CA1000-memory.dmp

Filesize
4KB

Download
memory/2188-119-0x00000000025F0000-0x00000000025F1000-memory.dmp

Filesize
4KB

Download
memory/2188-118-0x0000000004780000-0x0000000004781000-memory.dmp

Filesize
4KB

Download
memory/2188-117-0x0000000004D40000-0x0000000004D41000-memory.dmp

Filesize
4KB

Download
memory/2356-146-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2356-144-0x0000000000413FA4-mapping.dmp

Download
memory/3420-129-0x0000000000000000-mapping.dmp

Download
memory/3648-126-0x0000000000000000-mapping.dmp

Download
memory/4020-121-0x0000000000000000-mapping.dmp

Download
memory/4076-128-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4076-124-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4076-125-0x0000000000413FA4-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads