remcos | e7b8c782d225ac304d03ac431fe7665f365612d7230e6ec703c85682b52d3acf

General

Target

a609c68b93e5d6a6c73108744c1288fb.exe
Size

1.3MB
MD5

a609c68b93e5d6a6c73108744c1288fb
SHA1

3a28c194896fcd7281342d5d15c7b9c4c903b8fa
SHA256

e7b8c782d225ac304d03ac431fe7665f365612d7230e6ec703c85682b52d3acf
SHA512

eaed74930ecf17d7a20ad81c424e17644724b52abf630882e5f654863afdbe8d3a68f5718b431005de3f9162071f1005c5d7727e00dc821d34dcb98a8f58cdac

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

3980 win.exe
3500 win.exe

pid	process
3980	win.exe
3500	win.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a609c68b93e5d6a6c73108744c1288fb.exewin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\	a609c68b93e5d6a6c73108744c1288fb.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\""	a609c68b93e5d6a6c73108744c1288fb.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 25 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.exewin.exe

pid	process
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe
3980	win.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.exewin.exe

description	pid	process	target process
PID 504 set thread context of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 3980 set thread context of 3500	3980	win.exe	win.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3100 504 WerFault.exe a609c68b93e5d6a6c73108744c1288fb.exe
2200 3980 WerFault.exe win.exe
Delays execution with timeout.exe 6 IoCs
evasion

Processes:

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

pid process

4076 timeout.exe
204 timeout.exe
3656 timeout.exe
976 timeout.exe
540 timeout.exe
1532 timeout.exe

pid	pid_target	process	target process
3100	504	WerFault.exe	a609c68b93e5d6a6c73108744c1288fb.exe
2200	3980	WerFault.exe	win.exe

pid	process
4076	timeout.exe
204	timeout.exe
3656	timeout.exe
976	timeout.exe
540	timeout.exe
1532	timeout.exe

Modifies registry class 1 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	a609c68b93e5d6a6c73108744c1288fb.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.exeWerFault.exewin.exeWerFault.exe

pid	process
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
504	a609c68b93e5d6a6c73108744c1288fb.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3100	WerFault.exe
3980	win.exe
3980	win.exe
3980	win.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe
2200	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

win.exe

pid process

3500 win.exe

pid	process
3500	win.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.exeWerFault.exewin.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	504	a609c68b93e5d6a6c73108744c1288fb.exe
Token: SeRestorePrivilege	3100	WerFault.exe
Token: SeBackupPrivilege	3100	WerFault.exe
Token: SeDebugPrivilege	3100	WerFault.exe
Token: SeDebugPrivilege	3980	win.exe
Token: SeDebugPrivilege	2200	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

3500 win.exe

pid	process
3500	win.exe

Suspicious use of WriteProcessMemory 65 IoCs

Processes:

a609c68b93e5d6a6c73108744c1288fb.execmd.execmd.execmd.exea609c68b93e5d6a6c73108744c1288fb.exeWScript.execmd.exewin.execmd.execmd.execmd.exe

description	pid	process	target process
PID 504 wrote to memory of 408	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 408	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 408	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 408 wrote to memory of 4076	408	cmd.exe	timeout.exe
PID 408 wrote to memory of 4076	408	cmd.exe	timeout.exe
PID 408 wrote to memory of 4076	408	cmd.exe	timeout.exe
PID 504 wrote to memory of 3704	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 3704	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 3704	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 3704 wrote to memory of 204	3704	cmd.exe	timeout.exe
PID 3704 wrote to memory of 204	3704	cmd.exe	timeout.exe
PID 3704 wrote to memory of 204	3704	cmd.exe	timeout.exe
PID 504 wrote to memory of 2044	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 2044	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 504 wrote to memory of 2044	504	a609c68b93e5d6a6c73108744c1288fb.exe	cmd.exe
PID 2044 wrote to memory of 3656	2044	cmd.exe	timeout.exe
PID 2044 wrote to memory of 3656	2044	cmd.exe	timeout.exe
PID 2044 wrote to memory of 3656	2044	cmd.exe	timeout.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 504 wrote to memory of 1328	504	a609c68b93e5d6a6c73108744c1288fb.exe	a609c68b93e5d6a6c73108744c1288fb.exe
PID 1328 wrote to memory of 3900	1328	a609c68b93e5d6a6c73108744c1288fb.exe	WScript.exe
PID 1328 wrote to memory of 3900	1328	a609c68b93e5d6a6c73108744c1288fb.exe	WScript.exe
PID 1328 wrote to memory of 3900	1328	a609c68b93e5d6a6c73108744c1288fb.exe	WScript.exe
PID 3900 wrote to memory of 3184	3900	WScript.exe	cmd.exe
PID 3900 wrote to memory of 3184	3900	WScript.exe	cmd.exe
PID 3900 wrote to memory of 3184	3900	WScript.exe	cmd.exe
PID 3184 wrote to memory of 3980	3184	cmd.exe	win.exe
PID 3184 wrote to memory of 3980	3184	cmd.exe	win.exe
PID 3184 wrote to memory of 3980	3184	cmd.exe	win.exe
PID 3980 wrote to memory of 2292	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 2292	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 2292	3980	win.exe	cmd.exe
PID 2292 wrote to memory of 976	2292	cmd.exe	timeout.exe
PID 2292 wrote to memory of 976	2292	cmd.exe	timeout.exe
PID 2292 wrote to memory of 976	2292	cmd.exe	timeout.exe
PID 3980 wrote to memory of 1176	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 1176	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 1176	3980	win.exe	cmd.exe
PID 1176 wrote to memory of 540	1176	cmd.exe	timeout.exe
PID 1176 wrote to memory of 540	1176	cmd.exe	timeout.exe
PID 1176 wrote to memory of 540	1176	cmd.exe	timeout.exe
PID 3980 wrote to memory of 1828	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 1828	3980	win.exe	cmd.exe
PID 3980 wrote to memory of 1828	3980	win.exe	cmd.exe
PID 1828 wrote to memory of 1532	1828	cmd.exe	timeout.exe
PID 1828 wrote to memory of 1532	1828	cmd.exe	timeout.exe
PID 1828 wrote to memory of 1532	1828	cmd.exe	timeout.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe
PID 3980 wrote to memory of 3500	3980	win.exe	win.exe

C:\Users\Admin\AppData\Local\Temp\a609c68b93e5d6a6c73108744c1288fb.exe
"C:\Users\Admin\AppData\Local\Temp\a609c68b93e5d6a6c73108744c1288fb.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:504

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:408

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:4076

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:3704

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:2044

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:3656

C:\Users\Admin\AppData\Local\Temp\a609c68b93e5d6a6c73108744c1288fb.exe
"C:\Users\Admin\AppData\Local\Temp\a609c68b93e5d6a6c73108744c1288fb.exe"
2⤵
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1328

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:3900

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:3184

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:3980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:976

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:1176

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:540

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:1532

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:3500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3980 -s 1576
6⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 504 -s 1576
2⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3100

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
a609c68b93e5d6a6c73108744c1288fb

SHA1
3a28c194896fcd7281342d5d15c7b9c4c903b8fa

SHA256
e7b8c782d225ac304d03ac431fe7665f365612d7230e6ec703c85682b52d3acf

SHA512
eaed74930ecf17d7a20ad81c424e17644724b52abf630882e5f654863afdbe8d3a68f5718b431005de3f9162071f1005c5d7727e00dc821d34dcb98a8f58cdac

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
a609c68b93e5d6a6c73108744c1288fb

SHA1
3a28c194896fcd7281342d5d15c7b9c4c903b8fa

SHA256
e7b8c782d225ac304d03ac431fe7665f365612d7230e6ec703c85682b52d3acf

SHA512
eaed74930ecf17d7a20ad81c424e17644724b52abf630882e5f654863afdbe8d3a68f5718b431005de3f9162071f1005c5d7727e00dc821d34dcb98a8f58cdac

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
a609c68b93e5d6a6c73108744c1288fb

SHA1
3a28c194896fcd7281342d5d15c7b9c4c903b8fa

SHA256
e7b8c782d225ac304d03ac431fe7665f365612d7230e6ec703c85682b52d3acf

SHA512
eaed74930ecf17d7a20ad81c424e17644724b52abf630882e5f654863afdbe8d3a68f5718b431005de3f9162071f1005c5d7727e00dc821d34dcb98a8f58cdac

Download Submit
memory/204-14-0x0000000000000000-mapping.dmp

Download
memory/408-11-0x0000000000000000-mapping.dmp

Download
memory/504-2-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/504-10-0x00000000058A0000-0x00000000058D0000-memory.dmp

Filesize
192KB

Download
memory/504-5-0x00000000056C0000-0x00000000056C1000-memory.dmp

Filesize
4KB

Download
memory/504-3-0x0000000000C00000-0x0000000000C01000-memory.dmp

Filesize
4KB

Download
memory/504-8-0x0000000005890000-0x0000000005891000-memory.dmp

Filesize
4KB

Download
memory/504-9-0x0000000005B90000-0x0000000005B91000-memory.dmp

Filesize
4KB

Download
memory/504-6-0x0000000005C60000-0x0000000005C61000-memory.dmp

Filesize
4KB

Download
memory/504-7-0x0000000005900000-0x0000000005901000-memory.dmp

Filesize
4KB

Download
memory/540-41-0x0000000000000000-mapping.dmp

Download
memory/976-38-0x0000000000000000-mapping.dmp

Download
memory/1176-40-0x0000000000000000-mapping.dmp

Download
memory/1328-18-0x0000000000413FA4-mapping.dmp

Download
memory/1328-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1328-24-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1532-43-0x0000000000000000-mapping.dmp

Download
memory/1828-42-0x0000000000000000-mapping.dmp

Download
memory/2044-15-0x0000000000000000-mapping.dmp

Download
memory/2200-47-0x0000000004560000-0x0000000004561000-memory.dmp

Filesize
4KB

Download
memory/2292-37-0x0000000000000000-mapping.dmp

Download
memory/3100-21-0x0000000004490000-0x0000000004491000-memory.dmp

Filesize
4KB

Download
memory/3184-25-0x0000000000000000-mapping.dmp

Download
memory/3500-50-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3500-45-0x0000000000413FA4-mapping.dmp

Download
memory/3656-16-0x0000000000000000-mapping.dmp

Download
memory/3704-13-0x0000000000000000-mapping.dmp

Download
memory/3900-19-0x0000000000000000-mapping.dmp

Download
memory/3980-39-0x00000000055A0000-0x00000000055A1000-memory.dmp

Filesize
4KB

Download
memory/3980-29-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/3980-26-0x0000000000000000-mapping.dmp

Download
memory/4076-12-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads