remcos | 2bc690b250672666e2a34800b808d748773492e1d250034505239d03b7882f4b

General

Target

03cbf1b9632c3bcd5c979a05f90b160f.exe
Size

1.1MB
MD5

03cbf1b9632c3bcd5c979a05f90b160f
SHA1

2ea6b9defe7286687c1fb6c26f7e90ad200fd1c4
SHA256

2bc690b250672666e2a34800b808d748773492e1d250034505239d03b7882f4b
SHA512

9163ae9d26ce579aeeda107e5d6d6c37d64c731d94742a982b2ddb0f153a9d84fc40058a87d68b1b79fe190b9d8f31f207f95c72904847a36fe2d45cfc60afef

Score

10^/10

remcos rat upx

Malware Config

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1236-68-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/1236-74-0x0000000000400000-0x0000000000481000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

03cbf1b9632c3bcd5c979a05f90b160f.exe

description pid process target process

PID 540 set thread context of 1236 540 03cbf1b9632c3bcd5c979a05f90b160f.exe 03cbf1b9632c3bcd5c979a05f90b160f.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

03cbf1b9632c3bcd5c979a05f90b160f.exepowershell.exe

pid process

540 03cbf1b9632c3bcd5c979a05f90b160f.exe
540 03cbf1b9632c3bcd5c979a05f90b160f.exe
1008 powershell.exe
1008 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

03cbf1b9632c3bcd5c979a05f90b160f.exepowershell.exe

description pid process

Token: SeDebugPrivilege 540 03cbf1b9632c3bcd5c979a05f90b160f.exe
Token: SeDebugPrivilege 1008 powershell.exe

description	pid	process	target process
PID 540 set thread context of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe

pid	process
540	03cbf1b9632c3bcd5c979a05f90b160f.exe
540	03cbf1b9632c3bcd5c979a05f90b160f.exe
1008	powershell.exe
1008	powershell.exe

description	pid	process
Token: SeDebugPrivilege	540	03cbf1b9632c3bcd5c979a05f90b160f.exe
Token: SeDebugPrivilege	1008	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

03cbf1b9632c3bcd5c979a05f90b160f.exe

description	pid	process	target process
PID 540 wrote to memory of 1008	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	powershell.exe
PID 540 wrote to memory of 1008	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	powershell.exe
PID 540 wrote to memory of 1008	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	powershell.exe
PID 540 wrote to memory of 1008	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	powershell.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe
PID 540 wrote to memory of 1236	540	03cbf1b9632c3bcd5c979a05f90b160f.exe	03cbf1b9632c3bcd5c979a05f90b160f.exe

C:\Users\Admin\AppData\Local\Temp\03cbf1b9632c3bcd5c979a05f90b160f.exe
"C:\Users\Admin\AppData\Local\Temp\03cbf1b9632c3bcd5c979a05f90b160f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\03cbf1b9632c3bcd5c979a05f90b160f.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1008

C:\Users\Admin\AppData\Local\Temp\03cbf1b9632c3bcd5c979a05f90b160f.exe
"C:\Users\Admin\AppData\Local\Temp\03cbf1b9632c3bcd5c979a05f90b160f.exe"
2⤵
PID:1236

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/540-59-0x0000000000210000-0x0000000000211000-memory.dmp

Filesize
4KB

Download
memory/540-61-0x0000000005090000-0x0000000005091000-memory.dmp

Filesize
4KB

Download
memory/540-62-0x0000000002080000-0x0000000002089000-memory.dmp

Filesize
36KB

Download
memory/540-63-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/540-64-0x0000000004A50000-0x0000000004AD6000-memory.dmp

Filesize
536KB

Download
memory/540-65-0x00000000022A0000-0x00000000022DE000-memory.dmp

Filesize
248KB

Download
memory/1008-73-0x00000000025E0000-0x00000000025E1000-memory.dmp

Filesize
4KB

Download
memory/1008-76-0x0000000004942000-0x0000000004943000-memory.dmp

Filesize
4KB

Download
memory/1008-110-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1008-109-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/1008-71-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/1008-72-0x0000000004980000-0x0000000004981000-memory.dmp

Filesize
4KB

Download
memory/1008-66-0x0000000000000000-mapping.dmp

Download
memory/1008-108-0x00000000062C0000-0x00000000062C1000-memory.dmp

Filesize
4KB

Download
memory/1008-75-0x0000000004940000-0x0000000004941000-memory.dmp

Filesize
4KB

Download
memory/1008-67-0x0000000075A71000-0x0000000075A73000-memory.dmp

Filesize
8KB

Download
memory/1008-77-0x0000000002810000-0x0000000002811000-memory.dmp

Filesize
4KB

Download
memory/1008-80-0x0000000005650000-0x0000000005651000-memory.dmp

Filesize
4KB

Download
memory/1008-85-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/1008-86-0x0000000005750000-0x0000000005751000-memory.dmp

Filesize
4KB

Download
memory/1008-93-0x0000000006240000-0x0000000006241000-memory.dmp

Filesize
4KB

Download
memory/1008-94-0x0000000005610000-0x0000000005611000-memory.dmp

Filesize
4KB

Download
memory/1236-74-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/1236-69-0x000000000047B390-mapping.dmp

Download
memory/1236-68-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download

Analysis

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