remcos | 587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

General

Target

Factura Serfinanza050288227788749652817960744.exe
Size

1.9MB
MD5

65a849e00f8a9851b36707d010d5f644
SHA1

451b90dab257396edebab0d6ef58eb62bd6cf25b
SHA256

587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839
SHA512

588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

databasepropersonombrecomercialideasearchwords.services:3521

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 4 IoCs

Processes:

PxxoServicesTrialNet1.exePxxoServicesTrialNet1.exePxxoServicesTrialNet1.exePxxoServicesTrialNet1.exe

pid process

3756 PxxoServicesTrialNet1.exe
3456 PxxoServicesTrialNet1.exe
3028 PxxoServicesTrialNet1.exe
4056 PxxoServicesTrialNet1.exe

pid	process
3756	PxxoServicesTrialNet1.exe
3456	PxxoServicesTrialNet1.exe
3028	PxxoServicesTrialNet1.exe
4056	PxxoServicesTrialNet1.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PxxoServicesTrialNet1.exeFactura Serfinanza050288227788749652817960744.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\	PxxoServicesTrialNet1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\MservicesOrg2 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PxxoServicesTrialNet1.exe\""	PxxoServicesTrialNet1.exe
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Factura Serfinanza050288227788749652817960744.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\MservicesOrg2 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\PxxoServicesTrialNet1.exe\""	Factura Serfinanza050288227788749652817960744.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.exePxxoServicesTrialNet1.exe

pid	process
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.exePxxoServicesTrialNet1.exe

description	pid	process	target process
PID 2256 set thread context of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 3756 set thread context of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.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 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4072 2256 WerFault.exe Factura Serfinanza050288227788749652817960744.exe
3332 3756 WerFault.exe PxxoServicesTrialNet1.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

208 timeout.exe
3428 timeout.exe

pid	pid_target	process	target process
4072	2256	WerFault.exe	Factura Serfinanza050288227788749652817960744.exe
3332	3756	WerFault.exe	PxxoServicesTrialNet1.exe

pid	process
208	timeout.exe
3428	timeout.exe

Modifies registry class 1 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	Factura Serfinanza050288227788749652817960744.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.exeWerFault.exePxxoServicesTrialNet1.exeWerFault.exe

pid	process
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
2256	Factura Serfinanza050288227788749652817960744.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
4072	WerFault.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3756	PxxoServicesTrialNet1.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe
3332	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

PxxoServicesTrialNet1.exe

pid process

4056 PxxoServicesTrialNet1.exe

pid	process
4056	PxxoServicesTrialNet1.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.exeWerFault.exePxxoServicesTrialNet1.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	2256	Factura Serfinanza050288227788749652817960744.exe
Token: SeRestorePrivilege	4072	WerFault.exe
Token: SeBackupPrivilege	4072	WerFault.exe
Token: SeDebugPrivilege	4072	WerFault.exe
Token: SeDebugPrivilege	3756	PxxoServicesTrialNet1.exe
Token: SeDebugPrivilege	3332	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PxxoServicesTrialNet1.exe

pid process

4056 PxxoServicesTrialNet1.exe

pid	process
4056	PxxoServicesTrialNet1.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

Factura Serfinanza050288227788749652817960744.execmd.exeFactura Serfinanza050288227788749652817960744.exeWScript.execmd.exePxxoServicesTrialNet1.execmd.exe

description	pid	process	target process
PID 2256 wrote to memory of 744	2256	Factura Serfinanza050288227788749652817960744.exe	cmd.exe
PID 2256 wrote to memory of 744	2256	Factura Serfinanza050288227788749652817960744.exe	cmd.exe
PID 2256 wrote to memory of 744	2256	Factura Serfinanza050288227788749652817960744.exe	cmd.exe
PID 744 wrote to memory of 208	744	cmd.exe	timeout.exe
PID 744 wrote to memory of 208	744	cmd.exe	timeout.exe
PID 744 wrote to memory of 208	744	cmd.exe	timeout.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2256 wrote to memory of 2232	2256	Factura Serfinanza050288227788749652817960744.exe	Factura Serfinanza050288227788749652817960744.exe
PID 2232 wrote to memory of 1604	2232	Factura Serfinanza050288227788749652817960744.exe	WScript.exe
PID 2232 wrote to memory of 1604	2232	Factura Serfinanza050288227788749652817960744.exe	WScript.exe
PID 2232 wrote to memory of 1604	2232	Factura Serfinanza050288227788749652817960744.exe	WScript.exe
PID 1604 wrote to memory of 1908	1604	WScript.exe	cmd.exe
PID 1604 wrote to memory of 1908	1604	WScript.exe	cmd.exe
PID 1604 wrote to memory of 1908	1604	WScript.exe	cmd.exe
PID 1908 wrote to memory of 3756	1908	cmd.exe	PxxoServicesTrialNet1.exe
PID 1908 wrote to memory of 3756	1908	cmd.exe	PxxoServicesTrialNet1.exe
PID 1908 wrote to memory of 3756	1908	cmd.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3480	3756	PxxoServicesTrialNet1.exe	cmd.exe
PID 3756 wrote to memory of 3480	3756	PxxoServicesTrialNet1.exe	cmd.exe
PID 3756 wrote to memory of 3480	3756	PxxoServicesTrialNet1.exe	cmd.exe
PID 3480 wrote to memory of 3428	3480	cmd.exe	timeout.exe
PID 3480 wrote to memory of 3428	3480	cmd.exe	timeout.exe
PID 3480 wrote to memory of 3428	3480	cmd.exe	timeout.exe
PID 3756 wrote to memory of 3456	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3456	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3456	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3028	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3028	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 3028	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe
PID 3756 wrote to memory of 4056	3756	PxxoServicesTrialNet1.exe	PxxoServicesTrialNet1.exe

C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza050288227788749652817960744.exe
"C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza050288227788749652817960744.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2256

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:208

C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza050288227788749652817960744.exe
"C:\Users\Admin\AppData\Local\Temp\Factura Serfinanza050288227788749652817960744.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2232

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:1908

C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.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:3756

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:3480

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:3428

C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
"C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
6⤵
- Executes dropped EXE
PID:3456

C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
"C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
6⤵
- Executes dropped EXE
PID:3028

C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
"C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3756 -s 1476
6⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3332

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1456
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4072

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
a39af763b1c09ead3c98a6a615f377fe

SHA1
9bd3d39c89e47fe7072270ecc80b810103235c03

SHA256
a3930d7535eb768523ee52bbe69f13f857a0ae0f982d7bfc354d802f21010f8f

SHA512
3ed8e33ac95fd2536286b4afb2ed2a082bb5f98843478262b32263a14a5dbe0425de7b8d9662a5e482b207ebf8484ace8009ecd1881a6f6f8b0ccf3b0fdfe5da

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
MD5
65a849e00f8a9851b36707d010d5f644

SHA1
451b90dab257396edebab0d6ef58eb62bd6cf25b

SHA256
587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

SHA512
588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
MD5
65a849e00f8a9851b36707d010d5f644

SHA1
451b90dab257396edebab0d6ef58eb62bd6cf25b

SHA256
587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

SHA512
588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
MD5
65a849e00f8a9851b36707d010d5f644

SHA1
451b90dab257396edebab0d6ef58eb62bd6cf25b

SHA256
587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

SHA512
588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
MD5
65a849e00f8a9851b36707d010d5f644

SHA1
451b90dab257396edebab0d6ef58eb62bd6cf25b

SHA256
587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

SHA512
588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Download Submit
C:\Users\Admin\AppData\Roaming\System32\PxxoServicesTrialNet1.exe
MD5
65a849e00f8a9851b36707d010d5f644

SHA1
451b90dab257396edebab0d6ef58eb62bd6cf25b

SHA256
587df9036ffed6807865686f406ff26511a466562129803f75c5b8cd7e0f9839

SHA512
588eae1907460475f68bb17783fb813dd4004ee9759b177e62efe1e22843796fee611082fa1873adf079e30523331d1f18be4295dca6fcef42002c806fb1bd2d

Download Submit
memory/208-120-0x0000000000000000-mapping.dmp

Download
memory/744-118-0x0000000000000000-mapping.dmp

Download
memory/1604-124-0x0000000000000000-mapping.dmp

Download
memory/1908-127-0x0000000000000000-mapping.dmp

Download
memory/2232-123-0x0000000000413FA4-mapping.dmp

Download
memory/2232-122-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2232-126-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2256-121-0x00000000077F0000-0x00000000077F1000-memory.dmp

Filesize
4KB

Download
memory/2256-114-0x0000000000B90000-0x0000000000B91000-memory.dmp

Filesize
4KB

Download
memory/2256-119-0x0000000006970000-0x0000000006971000-memory.dmp

Filesize
4KB

Download
memory/2256-117-0x0000000002EC0000-0x0000000002F00000-memory.dmp

Filesize
256KB

Download
memory/2256-116-0x0000000005570000-0x0000000005571000-memory.dmp

Filesize
4KB

Download
memory/3428-136-0x0000000000000000-mapping.dmp

Download
memory/3480-135-0x0000000000000000-mapping.dmp

Download
memory/3756-128-0x0000000000000000-mapping.dmp

Download
memory/3756-137-0x0000000006570000-0x0000000006571000-memory.dmp

Filesize
4KB

Download
memory/4056-142-0x0000000000413FA4-mapping.dmp

Download
memory/4056-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads