remcos | 27d8418b5bce91e282b70fa6c7c4a24b99958d09931750fa0018e1f5253bc29a

General

Target

00004563LIST.exe
Size

1.3MB
MD5

6bbe4822f897346e2ebe3f9460a7e73d
SHA1

13c631218b516eb28a14f320438a5485b138a16c
SHA256

67fbe8329d7361d63e1c26af5207daeb0f1c0750bac56526c0c43a3492b9f71d
SHA512

5751bc015ab3669ea6da9c5010673738554b6fae5c3a9942b71c6915e3195d94a54c0a3ba7d864ba3af64bcf0686114724611b73709574088b7b07094c513943
SSDEEP

24576:jqDEvCTbMWu7rQYlBQcBiT6rprG8aIwnGQY8ScSrdc/BCkeGZrbgXNbox:jTvC/MTQYxsWR7aIIY7cSrLkeQMXK

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

192.3.64.152:2559

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-ZFXG9Y
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anaboly.vbs	anaboly.exe

Executes dropped EXE 1 IoCs

pid	Process
456	anaboly.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0007000000023c8a-9.dat	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 456 set thread context of 3160	456	anaboly.exe	83
PID 3160 set thread context of 4920	3160	svchost.exe	84

System Location Discovery: System Language Discovery 1 TTPs 3 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	00004563LIST.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	anaboly.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3160	svchost.exe
3160	svchost.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
456	anaboly.exe
3160	svchost.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
1512	00004563LIST.exe
1512	00004563LIST.exe
1512	00004563LIST.exe
456	anaboly.exe
456	anaboly.exe
456	anaboly.exe

Suspicious use of SendNotifyMessage 6 IoCs

pid	Process
1512	00004563LIST.exe
1512	00004563LIST.exe
1512	00004563LIST.exe
456	anaboly.exe
456	anaboly.exe
456	anaboly.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 456	1512	00004563LIST.exe	82
PID 1512 wrote to memory of 456	1512	00004563LIST.exe	82
PID 1512 wrote to memory of 456	1512	00004563LIST.exe	82
PID 456 wrote to memory of 3160	456	anaboly.exe	83
PID 456 wrote to memory of 3160	456	anaboly.exe	83
PID 456 wrote to memory of 3160	456	anaboly.exe	83
PID 456 wrote to memory of 3160	456	anaboly.exe	83
PID 3160 wrote to memory of 4920	3160	svchost.exe	84
PID 3160 wrote to memory of 4920	3160	svchost.exe	84
PID 3160 wrote to memory of 4920	3160	svchost.exe	84
PID 3160 wrote to memory of 4920	3160	svchost.exe	84

C:\Users\Admin\AppData\Local\Temp\00004563LIST.exe
"C:\Users\Admin\AppData\Local\Temp\00004563LIST.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Users\Admin\AppData\Local\exhilaratingly\anaboly.exe
  "C:\Users\Admin\AppData\Local\Temp\00004563LIST.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:456
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\00004563LIST.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3160
  - - \??\c:\program files (x86)\internet explorer\iexplore.exe
      "c:\program files (x86)\internet explorer\iexplore.exe"
      4⤵
      PID:4920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\exhilaratingly\anaboly.exe

Filesize
1.3MB

MD5
6bbe4822f897346e2ebe3f9460a7e73d

SHA1
13c631218b516eb28a14f320438a5485b138a16c

SHA256
67fbe8329d7361d63e1c26af5207daeb0f1c0750bac56526c0c43a3492b9f71d

SHA512
5751bc015ab3669ea6da9c5010673738554b6fae5c3a9942b71c6915e3195d94a54c0a3ba7d864ba3af64bcf0686114724611b73709574088b7b07094c513943

Download Submit
memory/456-18-0x0000000000C30000-0x0000000001030000-memory.dmp

Filesize
4.0MB

Download
memory/1512-6-0x0000000001550000-0x0000000001950000-memory.dmp

Filesize
4.0MB

Download
memory/3160-22-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3160-21-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3160-20-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3160-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/3160-28-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/4920-25-0x0000000000B90000-0x0000000000B9E000-memory.dmp

Filesize
56KB

Download
memory/4920-29-0x0000000000B90000-0x0000000000B9E000-memory.dmp

Filesize
56KB

Download
memory/4920-27-0x0000000000B90000-0x0000000000B9E000-memory.dmp

Filesize
56KB

Download
memory/4920-24-0x0000000000B90000-0x0000000000B9E000-memory.dmp

Filesize
56KB

Download

Analysis

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