remcos | 019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

General

Target

346c907243ff30e626f16d66fabf0af1.exe
Size

1.3MB
MD5

346c907243ff30e626f16d66fabf0af1
SHA1

27892c130128c844142040643de37e4c7092a715
SHA256

019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8
SHA512

d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

swryijgrvcsgkopnmcdertvgdswbvmophtfdczxs.ydns.eu:2017

Signatures

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

Processes:

vlc.exevlc.exe

pid process

3712 vlc.exe
2432 vlc.exe

pid	process
3712	vlc.exe
2432	vlc.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

346c907243ff30e626f16d66fabf0af1.exevlc.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\	346c907243ff30e626f16d66fabf0af1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\vlc.exe\""	346c907243ff30e626f16d66fabf0af1.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vlc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\vlc.exe\""	vlc.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.exevlc.exe

pid	process
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.exevlc.exe

description	pid	process	target process
PID 64 set thread context of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 3712 set thread context of 2432	3712	vlc.exe	vlc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1592 64 WerFault.exe 346c907243ff30e626f16d66fabf0af1.exe
2876 3712 WerFault.exe vlc.exe
Delays execution with timeout.exe 6 IoCs
evasion

Processes:

timeout.exetimeout.exetimeout.exetimeout.exetimeout.exetimeout.exe

pid process

2880 timeout.exe
3496 timeout.exe
1336 timeout.exe
1328 timeout.exe
2092 timeout.exe
584 timeout.exe

pid	pid_target	process	target process
1592	64	WerFault.exe	346c907243ff30e626f16d66fabf0af1.exe
2876	3712	WerFault.exe	vlc.exe

pid	process
2880	timeout.exe
3496	timeout.exe
1336	timeout.exe
1328	timeout.exe
2092	timeout.exe
584	timeout.exe

Modifies registry class 1 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	346c907243ff30e626f16d66fabf0af1.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.exeWerFault.exevlc.exeWerFault.exe

pid	process
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
64	346c907243ff30e626f16d66fabf0af1.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
1592	WerFault.exe
3712	vlc.exe
3712	vlc.exe
3712	vlc.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe
2876	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

2432 vlc.exe

pid	process
2432	vlc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.exeWerFault.exevlc.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	64	346c907243ff30e626f16d66fabf0af1.exe
Token: SeRestorePrivilege	1592	WerFault.exe
Token: SeBackupPrivilege	1592	WerFault.exe
Token: SeDebugPrivilege	1592	WerFault.exe
Token: SeDebugPrivilege	3712	vlc.exe
Token: SeDebugPrivilege	2876	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vlc.exe

pid process

2432 vlc.exe

pid	process
2432	vlc.exe

Suspicious use of WriteProcessMemory 65 IoCs

Processes:

346c907243ff30e626f16d66fabf0af1.execmd.execmd.execmd.exe346c907243ff30e626f16d66fabf0af1.exeWScript.execmd.exevlc.execmd.execmd.execmd.exe

description	pid	process	target process
PID 64 wrote to memory of 2688	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2688	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2688	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 2688 wrote to memory of 2880	2688	cmd.exe	timeout.exe
PID 2688 wrote to memory of 2880	2688	cmd.exe	timeout.exe
PID 2688 wrote to memory of 2880	2688	cmd.exe	timeout.exe
PID 64 wrote to memory of 2204	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2204	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2204	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 2204 wrote to memory of 3496	2204	cmd.exe	timeout.exe
PID 2204 wrote to memory of 3496	2204	cmd.exe	timeout.exe
PID 2204 wrote to memory of 3496	2204	cmd.exe	timeout.exe
PID 64 wrote to memory of 2780	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2780	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 64 wrote to memory of 2780	64	346c907243ff30e626f16d66fabf0af1.exe	cmd.exe
PID 2780 wrote to memory of 1336	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 1336	2780	cmd.exe	timeout.exe
PID 2780 wrote to memory of 1336	2780	cmd.exe	timeout.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 64 wrote to memory of 588	64	346c907243ff30e626f16d66fabf0af1.exe	346c907243ff30e626f16d66fabf0af1.exe
PID 588 wrote to memory of 3884	588	346c907243ff30e626f16d66fabf0af1.exe	WScript.exe
PID 588 wrote to memory of 3884	588	346c907243ff30e626f16d66fabf0af1.exe	WScript.exe
PID 588 wrote to memory of 3884	588	346c907243ff30e626f16d66fabf0af1.exe	WScript.exe
PID 3884 wrote to memory of 2176	3884	WScript.exe	cmd.exe
PID 3884 wrote to memory of 2176	3884	WScript.exe	cmd.exe
PID 3884 wrote to memory of 2176	3884	WScript.exe	cmd.exe
PID 2176 wrote to memory of 3712	2176	cmd.exe	vlc.exe
PID 2176 wrote to memory of 3712	2176	cmd.exe	vlc.exe
PID 2176 wrote to memory of 3712	2176	cmd.exe	vlc.exe
PID 3712 wrote to memory of 772	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 772	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 772	3712	vlc.exe	cmd.exe
PID 772 wrote to memory of 1328	772	cmd.exe	timeout.exe
PID 772 wrote to memory of 1328	772	cmd.exe	timeout.exe
PID 772 wrote to memory of 1328	772	cmd.exe	timeout.exe
PID 3712 wrote to memory of 488	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 488	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 488	3712	vlc.exe	cmd.exe
PID 488 wrote to memory of 2092	488	cmd.exe	timeout.exe
PID 488 wrote to memory of 2092	488	cmd.exe	timeout.exe
PID 488 wrote to memory of 2092	488	cmd.exe	timeout.exe
PID 3712 wrote to memory of 3440	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 3440	3712	vlc.exe	cmd.exe
PID 3712 wrote to memory of 3440	3712	vlc.exe	cmd.exe
PID 3440 wrote to memory of 584	3440	cmd.exe	timeout.exe
PID 3440 wrote to memory of 584	3440	cmd.exe	timeout.exe
PID 3440 wrote to memory of 584	3440	cmd.exe	timeout.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe
PID 3712 wrote to memory of 2432	3712	vlc.exe	vlc.exe

C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe
"C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:64

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:2688

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:2880

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:2204

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:3496

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:2780

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1336

C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe
"C:\Users\Admin\AppData\Local\Temp\346c907243ff30e626f16d66fabf0af1.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:588

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:3884

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\vlc.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:2176

C:\Users\Admin\AppData\Roaming\vlc.exe
C:\Users\Admin\AppData\Roaming\vlc.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:3712

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:772

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:1328

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:488

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:2092

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:3440

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:584

C:\Users\Admin\AppData\Roaming\vlc.exe
"C:\Users\Admin\AppData\Roaming\vlc.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 1032
6⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 64 -s 1588
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1592

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

MD5
0fd303b21c1a43c6a9078e6f5280ca85

SHA1
0db8f1ae34f4e2e72184e337951fde826c0bd26f

SHA256
5d8c6cfdf8fc198c4fd279487e5c1620ece89e39781c6337f4cb5e111e606ddc

SHA512
be4cdd48940bead0274c7cf08abd9bc75b5db468159cbf883198712d0bb15ad81a069638c628eba62237cfa0a197f845c0d9e1f4727c9608a8d642f7aba38671

Download Submit
C:\Users\Admin\AppData\Roaming\vlc.exe

MD5
346c907243ff30e626f16d66fabf0af1

SHA1
27892c130128c844142040643de37e4c7092a715

SHA256
019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

SHA512
d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

Download Submit
C:\Users\Admin\AppData\Roaming\vlc.exe

MD5
346c907243ff30e626f16d66fabf0af1

SHA1
27892c130128c844142040643de37e4c7092a715

SHA256
019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

SHA512
d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

Download Submit
C:\Users\Admin\AppData\Roaming\vlc.exe

MD5
346c907243ff30e626f16d66fabf0af1

SHA1
27892c130128c844142040643de37e4c7092a715

SHA256
019efe7373d58e57856b8f4757aa1e3a4df202415ea326194ec2a93f04aa2ac8

SHA512
d6622abdb1414641a345ea1e24612d53391848550de270538e0725879ced94ceb9333eeb3804ab2a3938f588257557f1c32a9c068639cc8872d364f16fa0676b

Download Submit
memory/64-13-0x0000000006640000-0x0000000006641000-memory.dmp

Filesize
4KB

Download
memory/64-8-0x0000000005420000-0x0000000005450000-memory.dmp

Filesize
192KB

Download
memory/64-7-0x00000000053E0000-0x00000000053E1000-memory.dmp

Filesize
4KB

Download
memory/64-2-0x0000000073160000-0x000000007384E000-memory.dmp

Filesize
6.9MB

Download
memory/64-3-0x0000000000A00000-0x0000000000A01000-memory.dmp

Filesize
4KB

Download
memory/64-6-0x0000000005460000-0x0000000005461000-memory.dmp

Filesize
4KB

Download
memory/64-5-0x0000000005340000-0x0000000005341000-memory.dmp

Filesize
4KB

Download
memory/488-35-0x0000000000000000-mapping.dmp

Download
memory/584-39-0x0000000000000000-mapping.dmp

Download
memory/588-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/588-17-0x0000000000413FA4-mapping.dmp

Download
memory/588-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/772-33-0x0000000000000000-mapping.dmp

Download
memory/1328-34-0x0000000000000000-mapping.dmp

Download
memory/1336-15-0x0000000000000000-mapping.dmp

Download
memory/1592-21-0x0000000004340000-0x0000000004341000-memory.dmp

Filesize
4KB

Download
memory/2092-36-0x0000000000000000-mapping.dmp

Download
memory/2176-22-0x0000000000000000-mapping.dmp

Download
memory/2204-11-0x0000000000000000-mapping.dmp

Download
memory/2432-41-0x0000000000413FA4-mapping.dmp

Download
memory/2432-43-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2688-9-0x0000000000000000-mapping.dmp

Download
memory/2780-14-0x0000000000000000-mapping.dmp

Download
memory/2876-44-0x00000000045B0000-0x00000000045B1000-memory.dmp

Filesize
4KB

Download
memory/2880-10-0x0000000000000000-mapping.dmp

Download
memory/3440-38-0x0000000000000000-mapping.dmp

Download
memory/3496-12-0x0000000000000000-mapping.dmp

Download
memory/3712-26-0x0000000073160000-0x000000007384E000-memory.dmp

Filesize
6.9MB

Download
memory/3712-23-0x0000000000000000-mapping.dmp

Download
memory/3884-19-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads