remcos | 7a850d5dfddcf237f182d3ffeaf90adb91274f476ca9c4c0306fcd8a6d230b5d

General

Target

Swift copy_BILLING INVOICE.pdf.exe
Size

601KB
MD5

dc07a7a57b744cc5c8660a4fca22dce9
SHA1

5800ef9c071ddda7bc31bb010eef63bceb54226f
SHA256

abb4163c6b54005775d4b62e00a5a8fd403c4fa474380935ac4d311058341e51
SHA512

eafece37655092cdaf8bc522bcc909503f102738cefb500ffa8493fc9639800a6ee0999968fb8c6984d5d658911d3314c057b541187fb3e64c5f186eba332ded
SSDEEP

12288:kXBqkXk44Tshr5zFx5EE+oApCJWX0lSx3vT:aBj4EdFxSXp8WX0gxb

Score

10^/10

remcos jan-bless discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

JAN-BLESS

C2

shahzad73.casacam.net:2404

shahzad73.ddns.net:2404

Attributes

audio_folder
MicRecords
audio_path
%AppData%
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
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-B2YKTJ
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
take_screenshot_title
wikipedia;solitaire;

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2512 set thread context of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33

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 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Swift copy_BILLING INVOICE.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Swift copy_BILLING INVOICE.pdf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2596	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2512	Swift copy_BILLING INVOICE.pdf.exe
2512	Swift copy_BILLING INVOICE.pdf.exe
2512	Swift copy_BILLING INVOICE.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2512	Swift copy_BILLING INVOICE.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2464	Swift copy_BILLING INVOICE.pdf.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2596	2512	Swift copy_BILLING INVOICE.pdf.exe	30
PID 2512 wrote to memory of 2596	2512	Swift copy_BILLING INVOICE.pdf.exe	30
PID 2512 wrote to memory of 2596	2512	Swift copy_BILLING INVOICE.pdf.exe	30
PID 2512 wrote to memory of 2596	2512	Swift copy_BILLING INVOICE.pdf.exe	30
PID 2512 wrote to memory of 2656	2512	Swift copy_BILLING INVOICE.pdf.exe	32
PID 2512 wrote to memory of 2656	2512	Swift copy_BILLING INVOICE.pdf.exe	32
PID 2512 wrote to memory of 2656	2512	Swift copy_BILLING INVOICE.pdf.exe	32
PID 2512 wrote to memory of 2656	2512	Swift copy_BILLING INVOICE.pdf.exe	32
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33
PID 2512 wrote to memory of 2464	2512	Swift copy_BILLING INVOICE.pdf.exe	33

C:\Users\Admin\AppData\Local\Temp\Swift copy_BILLING INVOICE.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Swift copy_BILLING INVOICE.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\thqSmcHi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5D7B.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2596
- C:\Users\Admin\AppData\Local\Temp\Swift copy_BILLING INVOICE.pdf.exe
  "{path}"
  2⤵
  PID:2656
- C:\Users\Admin\AppData\Local\Temp\Swift copy_BILLING INVOICE.pdf.exe
  "{path}"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\Local\Temp\tmp5D7B.tmp

Filesize
1KB

MD5
664440b6690493253276659f22bb2808

SHA1
5f0378e1ffd0847de9d774726a6d49ebfd190b17

SHA256
6e16a69d46bd797495df9e5329a1dbd7de2bac13af9bd2764d70df647131d816

SHA512
3722d0102f23290155b4923249ea28d054f46c68d2d4e714e80afc8a7401208b1dc7e37a4084efe8eeb3b373fa210e78810951859649c2b5330c84abbabbb9da

Download Submit
C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
2d90b3faa1a67b2fdae5b21b295a842b

SHA1
de7782b441ef0a85beb17b844c4d021b3ad942d2

SHA256
7dde32ffad07ffe2f3241c146715f1565b00b0fc8e0fc7061508b7515a390da7

SHA512
606c407e4a7b561b505deb62d4d866edb18462d8741f9cf021cb2f35a404837f371ba4b970e6948709d2c11ad32b77fbd5197c2bd71348114a369f1ac4dd6194

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memory/2464-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-26-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

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memory/2464-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

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memory/2464-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-20-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2464-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2512-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp

Filesize
4KB

Download
memory/2512-1-0x0000000000CC0000-0x0000000000D5C000-memory.dmp

Filesize
624KB

Download
memory/2512-3-0x0000000000610000-0x0000000000622000-memory.dmp

Filesize
72KB

Download
memory/2512-5-0x0000000004770000-0x00000000047BC000-memory.dmp

Filesize
304KB

Download
memory/2512-4-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

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memory/2512-27-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download
memory/2512-2-0x0000000074B90000-0x000000007527E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads