remcos | 9d61a9f459f8981483707df711e575931c3f637ec31b2befffce77d1ee486925

General

Target

77bae1e8054ce3da1f20b43d0040af17.exe
Size

1.3MB
MD5

77bae1e8054ce3da1f20b43d0040af17
SHA1

6ee8ea745b8afcf7ebd921720964ae8d15443a7b
SHA256

9d61a9f459f8981483707df711e575931c3f637ec31b2befffce77d1ee486925
SHA512

0dd0f902a274334441435a979041e3fd4ca0a9d44a1acfe3fb1fe0280e65b6e7532dde24243b86164c470f4ce6cf0c1e47363df2a59bfbd06f6252079409cb64

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

576 vlc.exe
652 vlc.exe

pid	process
576	vlc.exe
652	vlc.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vlc.exe77bae1e8054ce3da1f20b43d0040af17.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\vlc.exe\""	vlc.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\	77bae1e8054ce3da1f20b43d0040af17.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\vlc.exe\""	77bae1e8054ce3da1f20b43d0040af17.exe
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vlc.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.exevlc.exe

pid	process
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.exevlc.exe

description	pid	process	target process
PID 988 set thread context of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 576 set thread context of 652	576	vlc.exe	vlc.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2092 988 WerFault.exe 77bae1e8054ce3da1f20b43d0040af17.exe
Delays execution with timeout.exe 6 IoCs
evasion

Processes:

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

pid process

860 timeout.exe
196 timeout.exe
2736 timeout.exe
3256 timeout.exe
312 timeout.exe
3840 timeout.exe

pid	pid_target	process	target process
2092	988	WerFault.exe	77bae1e8054ce3da1f20b43d0040af17.exe

pid	process
860	timeout.exe
196	timeout.exe
2736	timeout.exe
3256	timeout.exe
312	timeout.exe
3840	timeout.exe

Modifies registry class 1 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings	77bae1e8054ce3da1f20b43d0040af17.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.exeWerFault.exevlc.exe

pid	process
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
988	77bae1e8054ce3da1f20b43d0040af17.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
2092	WerFault.exe
576	vlc.exe
576	vlc.exe
576	vlc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

vlc.exe

pid process

652 vlc.exe

pid	process
652	vlc.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.exeWerFault.exevlc.exe

description	pid	process
Token: SeDebugPrivilege	988	77bae1e8054ce3da1f20b43d0040af17.exe
Token: SeRestorePrivilege	2092	WerFault.exe
Token: SeBackupPrivilege	2092	WerFault.exe
Token: SeDebugPrivilege	2092	WerFault.exe
Token: SeDebugPrivilege	576	vlc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

vlc.exe

pid process

652 vlc.exe

pid	process
652	vlc.exe

Suspicious use of WriteProcessMemory 68 IoCs

Processes:

77bae1e8054ce3da1f20b43d0040af17.execmd.execmd.execmd.exe77bae1e8054ce3da1f20b43d0040af17.exeWScript.execmd.exevlc.execmd.execmd.execmd.exe

description	pid	process	target process
PID 988 wrote to memory of 3644	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 3644	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 3644	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 3644 wrote to memory of 860	3644	cmd.exe	timeout.exe
PID 3644 wrote to memory of 860	3644	cmd.exe	timeout.exe
PID 3644 wrote to memory of 860	3644	cmd.exe	timeout.exe
PID 988 wrote to memory of 828	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 828	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 828	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 828 wrote to memory of 196	828	cmd.exe	timeout.exe
PID 828 wrote to memory of 196	828	cmd.exe	timeout.exe
PID 828 wrote to memory of 196	828	cmd.exe	timeout.exe
PID 988 wrote to memory of 760	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 760	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 988 wrote to memory of 760	988	77bae1e8054ce3da1f20b43d0040af17.exe	cmd.exe
PID 760 wrote to memory of 2736	760	cmd.exe	timeout.exe
PID 760 wrote to memory of 2736	760	cmd.exe	timeout.exe
PID 760 wrote to memory of 2736	760	cmd.exe	timeout.exe
PID 988 wrote to memory of 2612	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2612	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2612	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 988 wrote to memory of 2688	988	77bae1e8054ce3da1f20b43d0040af17.exe	77bae1e8054ce3da1f20b43d0040af17.exe
PID 2688 wrote to memory of 1620	2688	77bae1e8054ce3da1f20b43d0040af17.exe	WScript.exe
PID 2688 wrote to memory of 1620	2688	77bae1e8054ce3da1f20b43d0040af17.exe	WScript.exe
PID 2688 wrote to memory of 1620	2688	77bae1e8054ce3da1f20b43d0040af17.exe	WScript.exe
PID 1620 wrote to memory of 188	1620	WScript.exe	cmd.exe
PID 1620 wrote to memory of 188	1620	WScript.exe	cmd.exe
PID 1620 wrote to memory of 188	1620	WScript.exe	cmd.exe
PID 188 wrote to memory of 576	188	cmd.exe	vlc.exe
PID 188 wrote to memory of 576	188	cmd.exe	vlc.exe
PID 188 wrote to memory of 576	188	cmd.exe	vlc.exe
PID 576 wrote to memory of 1784	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 1784	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 1784	576	vlc.exe	cmd.exe
PID 1784 wrote to memory of 3256	1784	cmd.exe	timeout.exe
PID 1784 wrote to memory of 3256	1784	cmd.exe	timeout.exe
PID 1784 wrote to memory of 3256	1784	cmd.exe	timeout.exe
PID 576 wrote to memory of 2432	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 2432	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 2432	576	vlc.exe	cmd.exe
PID 2432 wrote to memory of 312	2432	cmd.exe	timeout.exe
PID 2432 wrote to memory of 312	2432	cmd.exe	timeout.exe
PID 2432 wrote to memory of 312	2432	cmd.exe	timeout.exe
PID 576 wrote to memory of 2396	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 2396	576	vlc.exe	cmd.exe
PID 576 wrote to memory of 2396	576	vlc.exe	cmd.exe
PID 2396 wrote to memory of 3840	2396	cmd.exe	timeout.exe
PID 2396 wrote to memory of 3840	2396	cmd.exe	timeout.exe
PID 2396 wrote to memory of 3840	2396	cmd.exe	timeout.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe
PID 576 wrote to memory of 652	576	vlc.exe	vlc.exe

C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe
"C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:988

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:3644

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:860

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:828

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

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:760

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:2736

C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe
"C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe"
2⤵
PID:2612

C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe
"C:\Users\Admin\AppData\Local\Temp\77bae1e8054ce3da1f20b43d0040af17.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2688

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\vlc.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:188

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:576

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:1784

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:3256

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:2432

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:312

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:2396

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:3840

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:652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 988 -s 1620
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2092

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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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
77bae1e8054ce3da1f20b43d0040af17

SHA1
6ee8ea745b8afcf7ebd921720964ae8d15443a7b

SHA256
9d61a9f459f8981483707df711e575931c3f637ec31b2befffce77d1ee486925

SHA512
0dd0f902a274334441435a979041e3fd4ca0a9d44a1acfe3fb1fe0280e65b6e7532dde24243b86164c470f4ce6cf0c1e47363df2a59bfbd06f6252079409cb64

Download Submit
C:\Users\Admin\AppData\Roaming\vlc.exe
MD5
77bae1e8054ce3da1f20b43d0040af17

SHA1
6ee8ea745b8afcf7ebd921720964ae8d15443a7b

SHA256
9d61a9f459f8981483707df711e575931c3f637ec31b2befffce77d1ee486925

SHA512
0dd0f902a274334441435a979041e3fd4ca0a9d44a1acfe3fb1fe0280e65b6e7532dde24243b86164c470f4ce6cf0c1e47363df2a59bfbd06f6252079409cb64

Download Submit
C:\Users\Admin\AppData\Roaming\vlc.exe
MD5
77bae1e8054ce3da1f20b43d0040af17

SHA1
6ee8ea745b8afcf7ebd921720964ae8d15443a7b

SHA256
9d61a9f459f8981483707df711e575931c3f637ec31b2befffce77d1ee486925

SHA512
0dd0f902a274334441435a979041e3fd4ca0a9d44a1acfe3fb1fe0280e65b6e7532dde24243b86164c470f4ce6cf0c1e47363df2a59bfbd06f6252079409cb64

Download Submit
memory/188-24-0x0000000000000000-mapping.dmp

Download
memory/196-13-0x0000000000000000-mapping.dmp

Download
memory/312-39-0x0000000000000000-mapping.dmp

Download
memory/576-28-0x0000000073800000-0x0000000073EEE000-memory.dmp

Filesize
6.9MB

Download
memory/576-25-0x0000000000000000-mapping.dmp

Download
memory/652-45-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/652-43-0x0000000000413FA4-mapping.dmp

Download
memory/760-14-0x0000000000000000-mapping.dmp

Download
memory/828-12-0x0000000000000000-mapping.dmp

Download
memory/860-11-0x0000000000000000-mapping.dmp

Download
memory/988-8-0x0000000004F10000-0x0000000004F11000-memory.dmp

Filesize
4KB

Download
memory/988-7-0x0000000005170000-0x0000000005171000-memory.dmp

Filesize
4KB

Download
memory/988-2-0x0000000073800000-0x0000000073EEE000-memory.dmp

Filesize
6.9MB

Download
memory/988-6-0x00000000054D0000-0x00000000054D1000-memory.dmp

Filesize
4KB

Download
memory/988-5-0x0000000004F30000-0x0000000004F31000-memory.dmp

Filesize
4KB

Download
memory/988-3-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/988-9-0x00000000050D0000-0x0000000005100000-memory.dmp

Filesize
192KB

Download
memory/1620-19-0x0000000000000000-mapping.dmp

Download
memory/1784-36-0x0000000000000000-mapping.dmp

Download
memory/2092-20-0x0000000004480000-0x0000000004481000-memory.dmp

Filesize
4KB

Download
memory/2396-40-0x0000000000000000-mapping.dmp

Download
memory/2432-38-0x0000000000000000-mapping.dmp

Download
memory/2688-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2688-17-0x0000000000413FA4-mapping.dmp

Download
memory/2688-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2736-15-0x0000000000000000-mapping.dmp

Download
memory/3256-37-0x0000000000000000-mapping.dmp

Download
memory/3644-10-0x0000000000000000-mapping.dmp

Download
memory/3840-41-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads