remcos | 1ec91c0ab95a84afe71e67bd355b04abf1cc65b68abded89ce1247dc5682a8e6

Analysis

max time kernel
149s
max time network
134s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/11/2022, 15:47

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General

Target
2584c82f01d79e34c4eb4a44d58029aa.exe
Size 1.1MB
Sample221102-s77adscefm
SHA256 1ec91c0ab95a84afe71e67bd355b04abf1cc65b68abded89ce1247dc5682a8e6
MD5 2584c82f01d79e34c4eb4a44d58029aa
SHA1 c9a33e9be0262a8a755250e9fe7a3c1813592e74
SHA512 45173b9d45914ddf366a5715d1a154441f2b79826f7fdf5c807312f47ce6d482df277de16b6fe4104036ff1b9afc0f6014bfa2c363c4a1b6daaf5d06d0deece1
SSDEEP 24576:RYyeBQUFeejneTA8vsujOMFLDEStWk2fst/GQfHdVXipzcvP1W:Gyu9F5nr8vL6uXTQk8QrSGvPA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos wed file persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Wed File

107.174.202.148:14207

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-X79YGO
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Flcrnkvvzyx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Yhdxheal\\Flcrnkvvzyx.exe\""	2584c82f01d79e34c4eb4a44d58029aa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1604 set thread context of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31

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 2 IoCs

pid	Process
1136	powershell.exe
1316	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	2584c82f01d79e34c4eb4a44d58029aa.exe
Token: SeDebugPrivilege	1136	powershell.exe
Token: SeDebugPrivilege	1316	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1372	MSBuild.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 1136	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	27
PID 1604 wrote to memory of 1136	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	27
PID 1604 wrote to memory of 1136	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	27
PID 1604 wrote to memory of 1136	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	27
PID 1604 wrote to memory of 1316	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	29
PID 1604 wrote to memory of 1316	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	29
PID 1604 wrote to memory of 1316	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	29
PID 1604 wrote to memory of 1316	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	29
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31
PID 1604 wrote to memory of 1372	1604	2584c82f01d79e34c4eb4a44d58029aa.exe	31

C:\Users\Admin\AppData\Local\Temp\2584c82f01d79e34c4eb4a44d58029aa.exe
"C:\Users\Admin\AppData\Local\Temp\2584c82f01d79e34c4eb4a44d58029aa.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1136
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwADsAIABTAGUAdAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAJwBDADoAXAAnAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1316
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

d93f411851d7c929.customDestinations-ms

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Size 7KB
SHA256 926199cd1ebb197952dc88ccf41f4b829b5cce2e264d1e90e4645f12113266b1
MD5 cd6e1c53c7372901c7a20c564753acda
SHA1 2a1ca3fe73e02aab4ecf8445931ecc732d1ba858
SHA512 09a525f8dd2a653cf446781160aec08979722bb897bd3e285c3d00860e28762ae9ccbac2707f23a1c8f3a7222073d0a03e1268924bd98e482053e61661c08835
SSDEEP 96:chmxCNM8qnqvsqvJCwod51hmxCNM8qnqvsEHyqvJCwor/5z3U9QHx67gRXlUVScC:ErmUo/rmAHnorpWc67gRv
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1136-59-0x000000006E390000-0x000000006E93B000-memory.dmp

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memory/1136-60-0x000000006E390000-0x000000006E93B000-memory.dmp

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memory/1136-61-0x000000006E390000-0x000000006E93B000-memory.dmp

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memory/1316-66-0x000000006E360000-0x000000006E90B000-memory.dmp

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memory/1316-65-0x000000006E360000-0x000000006E90B000-memory.dmp

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memory/1372-68-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-77-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-85-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-67-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-84-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-70-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-72-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-73-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-74-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-75-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-83-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1372-79-0x0000000000400000-0x000000000047F000-memory.dmp

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memory/1604-56-0x0000000075601000-0x0000000075603000-memory.dmp

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memory/1604-54-0x0000000000EC0000-0x0000000000FEC000-memory.dmp

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memory/1604-55-0x0000000004CB0000-0x0000000004F00000-memory.dmp

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