remcos | 9d3039608025a43f763d86060b67c53deaf51c562ada90381325181681bd9db9

General

Target

f0deade5174321c58ad77324ab5588a8_JaffaCakes118.ps1
Size

1.4MB
MD5

f0deade5174321c58ad77324ab5588a8
SHA1

2b3a1492283804e8b5c430450f6b3851acab5e78
SHA256

9d3039608025a43f763d86060b67c53deaf51c562ada90381325181681bd9db9
SHA512

e469f2ee815c1ee742ff6266b57d0bf927a7a11cd2e984f12b9065c67696b1ef1e16eab8a1e185b18c8994bf3eb0727402ec49ee69ac7b8232073157a076e770
SSDEEP

24576:vw2O9/TgwrSUhVPHahmorI0hnvUwLS4PfzKRWkvc+4R:495cwOI0ZhMCBR

Score

10^/10

remcos rich-fam1-c.j discovery execution rat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

Rich-Fam1-C.J

C2

rich-fam1.strangled.net:6628

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
3
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
oiuyg
keylog_path
%AppData%
mouse_option
false
mutex
iuytfdcuytf-Q5AT11
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

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\licensingdiag.url	htq.exe

Executes dropped EXE 1 IoCs

pid	Process
2028	htq.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0008000000018710-15.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2028 set thread context of 2840	2028	htq.exe	32

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2584	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	htq.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2584	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2584	powershell.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2028	htq.exe
2028	htq.exe
2028	htq.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2028	htq.exe
2028	htq.exe
2028	htq.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2840	explorer.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 2028	2584	powershell.exe	31
PID 2584 wrote to memory of 2028	2584	powershell.exe	31
PID 2584 wrote to memory of 2028	2584	powershell.exe	31
PID 2584 wrote to memory of 2028	2584	powershell.exe	31
PID 2028 wrote to memory of 2840	2028	htq.exe	32
PID 2028 wrote to memory of 2840	2028	htq.exe	32
PID 2028 wrote to memory of 2840	2028	htq.exe	32
PID 2028 wrote to memory of 2840	2028	htq.exe	32
PID 2028 wrote to memory of 2840	2028	htq.exe	32
PID 2028 wrote to memory of 2840	2028	htq.exe	32

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f0deade5174321c58ad77324ab5588a8_JaffaCakes118.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Users\Public\htq.exe
  "C:\Users\Public\htq.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\Roaming\oiuyg\logs.dat

Filesize
79B

MD5
db24a2b1e8fc5ce518d33a66877a8745

SHA1
61866fcc293a73bae03460f16a99720d2fb44406

SHA256
02528cd5796fe85f57c498f8148a2b14071db5353e083b7b39246f0c92f98c0b

SHA512
8792a83531c64a8f134f381c3c3705316fbe86ff82efa93195aafee8d9770cc1312c8a385a817987b283cc8cbde393122e215c728caef6d8729cc3266ac4f2d0

Download Submit
C:\Users\Public\htq.exe

Filesize
1.0MB

MD5
7ed692b4d0e973636bf6992d61ddb9a6

SHA1
3fbad00949c63c11a53747ad5da570122f00cf01

SHA256
a0e4d4e6f0413e242fa8723e7a8e98e76e0035421a2a5e1703e6233e8cb86326

SHA512
129cbf1ee3bde11a3189ac21f781f8caac81004d2154354932b48fe8c30d36d2f4a10422d1eb20cc29219b137ef2f716b50789d1ae722ee600f3e73a021a425d

Download Submit
memory/2028-21-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/2584-8-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2584-6-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2584-10-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2584-9-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2584-11-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2584-5-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download
memory/2584-17-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2584-4-0x000007FEF6ACE000-0x000007FEF6ACF000-memory.dmp

Filesize
4KB

Download
memory/2584-7-0x000007FEF6810000-0x000007FEF71AD000-memory.dmp

Filesize
9.6MB

Download
memory/2840-35-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2840-32-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2840-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2840-23-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2840-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2840-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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