remcos | 8b44f1a914d853ce6df51bb8e1971576c34129e2d5408d5670ca84e57260fb48

General

Target

f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe
Size

992KB
MD5

f9612b2394ab6f23737fe1d3f020e0e1
SHA1

1649476b8e42afdf3a08d66e54a63047ae851cbb
SHA256

8b44f1a914d853ce6df51bb8e1971576c34129e2d5408d5670ca84e57260fb48
SHA512

09a2036afa78fabef7035fb105e780478984ecbf3cfe6f20eb5ff89d74c419b339f6238e10e8ae30095e9aca1bbc0d3d9842d7204f67b597e440ac60e328da3a
SSDEEP

12288:yQodBdt1J9hgwl4LLdTalhRtfi01U5RSrfZb4L0wACWKcT:yQQDOL1WhHfXavS7V4YwACC

Score

10^/10

remcos discovery persistence rat

Malware Config

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

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft OneDrive = "C:\\Users\\Admin\\AppData\\Local\\Chrome\\StikyNot.exe"	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91

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	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4788	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4356 wrote to memory of 4788	4356	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	91
PID 4788 wrote to memory of 4196	4788	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	92
PID 4788 wrote to memory of 4196	4788	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	92
PID 4788 wrote to memory of 4196	4788	f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe	92

C:\Users\Admin\AppData\Local\Temp\f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Users\Admin\AppData\Local\Temp\f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f9612b2394ab6f23737fe1d3f020e0e1_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4788
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:4196

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

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\remcos\logs.dat

Filesize
79B

MD5
a738dea0bd16ad26d9955c944ba57f23

SHA1
f05dfbc8b508141afe6dabda91cef7dbafd5a86d

SHA256
b8836aeec1c35a91b3f36425c914707c90f03680061e17340eb12108da00011e

SHA512
e8d593c9f2fff8c4c920d35578baaa771d866b1cb5cb0701ae37d533f0e85d6ca278571eb6556fa0a86936539cff71aa1c99c3c3c14f03c1a72e7c61a04eb23b

Download Submit
memory/4356-14-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-3-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-1-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-5-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-2-0x000000000053E000-0x000000000053F000-memory.dmp

Filesize
4KB

Download
memory/4356-6-0x000000000053E000-0x000000000053F000-memory.dmp

Filesize
4KB

Download
memory/4356-7-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-0-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4356-4-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4788-28-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-8-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-15-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-18-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-19-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-22-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-24-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-38-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-13-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-34-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4788-12-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads