remcos | 62af113dfd78cac402e87e1f70d7b3718258727b84ed947111269c1f874585da

General

Target

69aa57441342e6a7ff6b5b7cbf8cff3a.exe
Size

1.3MB
MD5

69aa57441342e6a7ff6b5b7cbf8cff3a
SHA1

be4c2676803beabbf4524a5eac674dbfa3cce0db
SHA256

62af113dfd78cac402e87e1f70d7b3718258727b84ed947111269c1f874585da
SHA512

1abf5eaf2b8078bce3da26dacdf132160e02692de15cf1801187ded19a4078aa23d0001432acb1d6c469c4582b48a48a92597ff76e456542b92ee7e410c3ab8c

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996

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

1012 win.exe
3928 win.exe

pid	process
1012	win.exe
3928	win.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exewin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\	69aa57441342e6a7ff6b5b7cbf8cff3a.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\\win.exe\""	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\	win.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\\win.exe\""	win.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exewin.exe

pid	process
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe
1012	win.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exewin.exe

description	pid	process	target process
PID 4032 set thread context of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 1012 set thread context of 3928	1012	win.exe	win.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2800 4032 WerFault.exe 69aa57441342e6a7ff6b5b7cbf8cff3a.exe
Delays execution with timeout.exe 6 IoCs
evasion

Processes:

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

pid process

204 timeout.exe
68 timeout.exe
1488 timeout.exe
2740 timeout.exe
200 timeout.exe
848 timeout.exe

pid	pid_target	process	target process
2800	4032	WerFault.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe

pid	process
204	timeout.exe
68	timeout.exe
1488	timeout.exe
2740	timeout.exe
200	timeout.exe
848	timeout.exe

Modifies registry class 1 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	69aa57441342e6a7ff6b5b7cbf8cff3a.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exeWerFault.exewin.exe

pid	process
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
2800	WerFault.exe
1012	win.exe
1012	win.exe
1012	win.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

win.exe

pid process

3928 win.exe

pid	process
3928	win.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.exeWerFault.exewin.exe

description	pid	process
Token: SeDebugPrivilege	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
Token: SeRestorePrivilege	2800	WerFault.exe
Token: SeBackupPrivilege	2800	WerFault.exe
Token: SeDebugPrivilege	2800	WerFault.exe
Token: SeDebugPrivilege	1012	win.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

3928 win.exe

pid	process
3928	win.exe

Suspicious use of WriteProcessMemory 65 IoCs

Processes:

69aa57441342e6a7ff6b5b7cbf8cff3a.execmd.execmd.execmd.exe69aa57441342e6a7ff6b5b7cbf8cff3a.exeWScript.execmd.exewin.execmd.execmd.execmd.exe

description	pid	process	target process
PID 4032 wrote to memory of 3440	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 3440	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 3440	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 3440 wrote to memory of 204	3440	cmd.exe	timeout.exe
PID 3440 wrote to memory of 204	3440	cmd.exe	timeout.exe
PID 3440 wrote to memory of 204	3440	cmd.exe	timeout.exe
PID 4032 wrote to memory of 940	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 940	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 940	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 940 wrote to memory of 68	940	cmd.exe	timeout.exe
PID 940 wrote to memory of 68	940	cmd.exe	timeout.exe
PID 940 wrote to memory of 68	940	cmd.exe	timeout.exe
PID 4032 wrote to memory of 2756	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 2756	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 4032 wrote to memory of 2756	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	cmd.exe
PID 2756 wrote to memory of 1488	2756	cmd.exe	timeout.exe
PID 2756 wrote to memory of 1488	2756	cmd.exe	timeout.exe
PID 2756 wrote to memory of 1488	2756	cmd.exe	timeout.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 4032 wrote to memory of 2840	4032	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	69aa57441342e6a7ff6b5b7cbf8cff3a.exe
PID 2840 wrote to memory of 2080	2840	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	WScript.exe
PID 2840 wrote to memory of 2080	2840	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	WScript.exe
PID 2840 wrote to memory of 2080	2840	69aa57441342e6a7ff6b5b7cbf8cff3a.exe	WScript.exe
PID 2080 wrote to memory of 4056	2080	WScript.exe	cmd.exe
PID 2080 wrote to memory of 4056	2080	WScript.exe	cmd.exe
PID 2080 wrote to memory of 4056	2080	WScript.exe	cmd.exe
PID 4056 wrote to memory of 1012	4056	cmd.exe	win.exe
PID 4056 wrote to memory of 1012	4056	cmd.exe	win.exe
PID 4056 wrote to memory of 1012	4056	cmd.exe	win.exe
PID 1012 wrote to memory of 3532	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 3532	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 3532	1012	win.exe	cmd.exe
PID 3532 wrote to memory of 2740	3532	cmd.exe	timeout.exe
PID 3532 wrote to memory of 2740	3532	cmd.exe	timeout.exe
PID 3532 wrote to memory of 2740	3532	cmd.exe	timeout.exe
PID 1012 wrote to memory of 696	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 696	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 696	1012	win.exe	cmd.exe
PID 696 wrote to memory of 200	696	cmd.exe	timeout.exe
PID 696 wrote to memory of 200	696	cmd.exe	timeout.exe
PID 696 wrote to memory of 200	696	cmd.exe	timeout.exe
PID 1012 wrote to memory of 2880	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 2880	1012	win.exe	cmd.exe
PID 1012 wrote to memory of 2880	1012	win.exe	cmd.exe
PID 2880 wrote to memory of 848	2880	cmd.exe	timeout.exe
PID 2880 wrote to memory of 848	2880	cmd.exe	timeout.exe
PID 2880 wrote to memory of 848	2880	cmd.exe	timeout.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe
PID 1012 wrote to memory of 3928	1012	win.exe	win.exe

C:\Users\Admin\AppData\Local\Temp\69aa57441342e6a7ff6b5b7cbf8cff3a.exe
"C:\Users\Admin\AppData\Local\Temp\69aa57441342e6a7ff6b5b7cbf8cff3a.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:3440

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:204

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:940

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:68

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:2756

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1488

C:\Users\Admin\AppData\Local\Temp\69aa57441342e6a7ff6b5b7cbf8cff3a.exe
"C:\Users\Admin\AppData\Local\Temp\69aa57441342e6a7ff6b5b7cbf8cff3a.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2840

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:2080

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:4056

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:1012

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:3532

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:2740

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:696

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:200

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:2880

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:848

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:3928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 1572
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2800

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
4a74e626596d6e66b4bbc59ee6848f2d

SHA1
047849ac8735ecc0943428c7cd5e00b52eee06ed

SHA256
98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

SHA512
1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
69aa57441342e6a7ff6b5b7cbf8cff3a

SHA1
be4c2676803beabbf4524a5eac674dbfa3cce0db

SHA256
62af113dfd78cac402e87e1f70d7b3718258727b84ed947111269c1f874585da

SHA512
1abf5eaf2b8078bce3da26dacdf132160e02692de15cf1801187ded19a4078aa23d0001432acb1d6c469c4582b48a48a92597ff76e456542b92ee7e410c3ab8c

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
69aa57441342e6a7ff6b5b7cbf8cff3a

SHA1
be4c2676803beabbf4524a5eac674dbfa3cce0db

SHA256
62af113dfd78cac402e87e1f70d7b3718258727b84ed947111269c1f874585da

SHA512
1abf5eaf2b8078bce3da26dacdf132160e02692de15cf1801187ded19a4078aa23d0001432acb1d6c469c4582b48a48a92597ff76e456542b92ee7e410c3ab8c

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
69aa57441342e6a7ff6b5b7cbf8cff3a

SHA1
be4c2676803beabbf4524a5eac674dbfa3cce0db

SHA256
62af113dfd78cac402e87e1f70d7b3718258727b84ed947111269c1f874585da

SHA512
1abf5eaf2b8078bce3da26dacdf132160e02692de15cf1801187ded19a4078aa23d0001432acb1d6c469c4582b48a48a92597ff76e456542b92ee7e410c3ab8c

Download Submit
memory/68-12-0x0000000000000000-mapping.dmp

Download
memory/200-35-0x0000000000000000-mapping.dmp

Download
memory/204-10-0x0000000000000000-mapping.dmp

Download
memory/696-34-0x0000000000000000-mapping.dmp

Download
memory/848-37-0x0000000000000000-mapping.dmp

Download
memory/940-11-0x0000000000000000-mapping.dmp

Download
memory/1012-33-0x0000000004C10000-0x0000000004C11000-memory.dmp

Filesize
4KB

Download
memory/1012-25-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/1012-22-0x0000000000000000-mapping.dmp

Download
memory/1488-14-0x0000000000000000-mapping.dmp

Download
memory/2080-17-0x0000000000000000-mapping.dmp

Download
memory/2740-32-0x0000000000000000-mapping.dmp

Download
memory/2756-13-0x0000000000000000-mapping.dmp

Download
memory/2800-20-0x00000000042D0000-0x00000000042D1000-memory.dmp

Filesize
4KB

Download
memory/2840-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2840-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2840-16-0x0000000000413FA4-mapping.dmp

Download
memory/2880-36-0x0000000000000000-mapping.dmp

Download
memory/3440-9-0x0000000000000000-mapping.dmp

Download
memory/3532-31-0x0000000000000000-mapping.dmp

Download
memory/3928-39-0x0000000000413FA4-mapping.dmp

Download
memory/3928-41-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4032-2-0x0000000073940000-0x000000007402E000-memory.dmp

Filesize
6.9MB

Download
memory/4032-6-0x0000000005C10000-0x0000000005C11000-memory.dmp

Filesize
4KB

Download
memory/4032-7-0x0000000005910000-0x0000000005911000-memory.dmp

Filesize
4KB

Download
memory/4032-5-0x0000000005670000-0x0000000005671000-memory.dmp

Filesize
4KB

Download
memory/4032-3-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Filesize
4KB

Download
memory/4032-8-0x0000000005640000-0x000000000566F000-memory.dmp

Filesize
188KB

Download
memory/4056-21-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads