remcos | 26cfb1b24425c97fc4588631b23ca93def5d84efb2300d81bdbbb48443207292

General

Target

d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe
Size

547KB
MD5

d059cb67acea2c312309714eb1af01a7
SHA1

007e9f4dbc3b50681b92df35c92f66322aed6e4d
SHA256

26cfb1b24425c97fc4588631b23ca93def5d84efb2300d81bdbbb48443207292
SHA512

0dc8ac47c6db6fd04e2d001652400901ede9bae4e271608e134ac65896b704d9722c601e2a82ced14a0895d3d3b3df6ba7aef981ca0db28bf074c9ea089deb28
SSDEEP

12288:DzGF2mcaboxdxAm2T1W7tsb4yaaMKwiqVm90XaQt2:HAcaboxdxj2T0psYO/Qt2

Score

10^/10

remcos covid-23 discovery rat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

covid-23

C2

latua.nsupdate.info:7722

fanta.nsupdate.info:7722

press2.awsmppl.com:7722

gem7.nerdpol.ovh:7722

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
Remcosss-MLU3BX
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

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.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
1392	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe
1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe
1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
392	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 1392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	95
PID 1116 wrote to memory of 1392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	95
PID 1116 wrote to memory of 1392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	95
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97
PID 1116 wrote to memory of 392	1116	d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe	97

C:\Users\Admin\AppData\Local\Temp\d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tQmFOpnzWBfP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6EA3.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1392
- C:\Users\Admin\AppData\Local\Temp\d059cb67acea2c312309714eb1af01a7_JaffaCakes118.exe
  "{path}"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:392

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

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\Local\Temp\tmp6EA3.tmp

Filesize
1KB

MD5
6a88fbe225b44b354c9ec1ef69654200

SHA1
d8d300918103554fbfbdb64080613e92f9dbaaa9

SHA256
0977ae9f403d93538eb477ca9e288609a5070de0c9141490b360cd2e8f04330f

SHA512
da887aac0042d4e22972a5432336c95299770bf8eaf14a50d41a09977746f93bd7dd3a181e193527ed51f3da97eca0926b3a77521f8bc4e2584cb0675daf5295

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

Filesize
74B

MD5
b130365ed74ee62584dc66a0119de978

SHA1
da47004e35ddac5aae3d3586cb5fe57e155a863a

SHA256
56a9071fed69ef1cecb44c79a51efc48bc29006a6612f34c2e867eac53a2f6dc

SHA512
6e83def173ea2492147d47e0e3bcee00d6a6a17e85bb30619986895a345f6de27ab04fa00a9576fd6bc1a59e063e2ecd03c682b46f0a87f653571f34a4ec69af

Download Submit
memory/392-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/392-22-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/392-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/392-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/392-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/392-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1116-5-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1116-9-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1116-10-0x0000000005E60000-0x0000000005EC6000-memory.dmp

Filesize
408KB

Download
memory/1116-11-0x0000000008650000-0x00000000086AA000-memory.dmp

Filesize
360KB

Download
memory/1116-8-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/1116-7-0x0000000005070000-0x0000000005082000-memory.dmp

Filesize
72KB

Download
memory/1116-6-0x0000000005440000-0x00000000054DC000-memory.dmp

Filesize
624KB

Download
memory/1116-0-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/1116-24-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1116-4-0x0000000005080000-0x000000000508A000-memory.dmp

Filesize
40KB

Download
memory/1116-3-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/1116-2-0x00000000057B0000-0x0000000005D54000-memory.dmp

Filesize
5.6MB

Download
memory/1116-1-0x0000000000640000-0x00000000006CE000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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