remcos | 86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72

General

Target

86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
Size

1.8MB
MD5

034e15527b8a528f14d030544dd7a137
SHA1

9344252caff2af4bef435827c0bc88c1bd6aec56
SHA256

86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72
SHA512

27f46fa25be1ddc7fcc95941acb0b3548774f1d3bbfc567c47847ee3832e37bedef88beed65a857afbedeb94873886b689762b4959db1c3e568387a64516704c
SSDEEP

24576:sD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoW7:sp7E+QrFUBgq2n7

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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
Remcos family
remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe

Executes dropped EXE 2 IoCs

pid	Process
4456	sbietrcl.exe
1176	sbietrcl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4456 set thread context of 1176	4456	sbietrcl.exe	97

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
4456	sbietrcl.exe
4456	sbietrcl.exe
4456	sbietrcl.exe
4456	sbietrcl.exe
4456	sbietrcl.exe
4456	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
Token: SeDebugPrivilege	4456	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4268 wrote to memory of 4456	4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe	95
PID 4268 wrote to memory of 4456	4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe	95
PID 4268 wrote to memory of 4456	4268	86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe	95
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97
PID 4456 wrote to memory of 1176	4456	sbietrcl.exe	97

C:\Users\Admin\AppData\Local\Temp\86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe
"C:\Users\Admin\AppData\Local\Temp\86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4268
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4456
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:1176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.8MB

MD5
4c4ed330ad4d7cc2b5c9fd93709de136

SHA1
2a226afd4477e7e77acd8419d4c42119b685c857

SHA256
d288c0c5cddba5fc3c3923011654c1f45ca8fa112ca8d5b3a821060f2f30bfb3

SHA512
e17ff1c129be80f51412ae48325283c3326c00609deb452f5af566518d8670a0c2c27bc813490abb06e56c3e99f5b4068e7feae485a67d91675b82493dfd1bab

Download Submit
memory/1176-37-0x0000000000560000-0x0000000000577000-memory.dmp

Filesize
92KB

Download
memory/4268-19-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4268-5-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4268-6-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4268-18-0x0000000075182000-0x0000000075183000-memory.dmp

Filesize
4KB

Download
memory/4268-0-0x0000000075182000-0x0000000075183000-memory.dmp

Filesize
4KB

Download
memory/4268-2-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4268-30-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4268-1-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4456-31-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4456-32-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4456-33-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4456-34-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download
memory/4456-41-0x0000000075180000-0x0000000075731000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads