remcos | c6839f5f4c0b1b3000d45b67fc0b2a0d22f732a1aeb61d2245470560ee6e1847

General

Target

78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe
Size

360KB
MD5

78d48e58a0c4343ad4d512d0eef0d495
SHA1

68de3435d8b660f85632761acf20df34b92f25d8
SHA256

c6839f5f4c0b1b3000d45b67fc0b2a0d22f732a1aeb61d2245470560ee6e1847
SHA512

33c1230a74fee1e60db18cc6759622e767ff4bd72c4cb920327e53b1f4ff775a995aed6f48abb78d7728921022b2e3ace9f0910357abd390cb0c595465af3ef7
SSDEEP

6144:tTagPgWhjzSGfzg0GngxWIn5e3S8213/jMtdH/pDhXdrEfMAnH:UgPgWhjOJ0GgxP82mtdfpFxEf7

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Version

2.4.7 Pro

Botnet

RemoteHost

C2

sub.winkcaffe.waw.pl: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-JTZM3B
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 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exerundllll.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	rundllll.exe

Executes dropped EXE 4 IoCs

Processes:

rundllll.exerundllll.exerundllll.exerundllll.exe

pid process

2916 rundllll.exe
264 rundllll.exe
4788 rundllll.exe
3240 rundllll.exe

pid	process
2916	rundllll.exe
264	rundllll.exe
4788	rundllll.exe
3240	rundllll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundllll.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundlll = "C:\\Users\\Admin\\AppData\\Local\\rundllll.exe -boot"	rundllll.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundllll.exe

description pid process target process

PID 2916 set thread context of 3240 2916 rundllll.exe rundllll.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2916 set thread context of 3240	2916	rundllll.exe	rundllll.exe

NTFS ADS 5 IoCs

Processes:

cmd.execmd.execmd.execmd.execmd.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe:Zone.Identifier	cmd.exe
File created	C:\Users\Admin\AppData\Local\rundllll.exe\:Zone.Identifier:$DATA	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\rundllll.exe:Zone.Identifier	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Local\rundllll.exe:Zone.Identifier	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exerundllll.exe

description pid process

Token: SeDebugPrivilege 4408 78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe
Token: SeDebugPrivilege 2916 rundllll.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

rundllll.exe

pid process

3240 rundllll.exe

description	pid	process
Token: SeDebugPrivilege	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe
Token: SeDebugPrivilege	2916	rundllll.exe

pid	process
3240	rundllll.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.execmd.exerundllll.exe

description	pid	process	target process
PID 4408 wrote to memory of 2452	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 2452	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 2452	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 2392	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 2392	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 2392	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3848	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3848	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3848	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3648	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3648	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 4408 wrote to memory of 3648	4408	78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe	cmd.exe
PID 3648 wrote to memory of 2916	3648	cmd.exe	rundllll.exe
PID 3648 wrote to memory of 2916	3648	cmd.exe	rundllll.exe
PID 3648 wrote to memory of 2916	3648	cmd.exe	rundllll.exe
PID 2916 wrote to memory of 4528	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 4528	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 4528	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 1624	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 1624	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 1624	2916	rundllll.exe	cmd.exe
PID 2916 wrote to memory of 264	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 264	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 264	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 4788	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 4788	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 4788	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe
PID 2916 wrote to memory of 3240	2916	rundllll.exe	rundllll.exe

C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4408

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe:Zone.Identifier"
2⤵
- NTFS ADS
PID:2452

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe:Zone.Identifier"
2⤵
- NTFS ADS
PID:2392

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\78d48e58a0c4343ad4d512d0eef0d495_JaffaCakes118.exe" "C:\Users\Admin\AppData\Local\rundllll.exe"
2⤵
- NTFS ADS
PID:3848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Local\rundllll.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:3648

C:\Users\Admin\AppData\Local\rundllll.exe
"C:\Users\Admin\AppData\Local\rundllll.exe"
3⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2916

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\rundllll.exe:Zone.Identifier"
4⤵
- NTFS ADS
PID:4528

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C type nul > "C:\Users\Admin\AppData\Local\rundllll.exe:Zone.Identifier"
4⤵
- NTFS ADS
PID:1624

C:\Users\Admin\AppData\Local\rundllll.exe
"C:\Users\Admin\AppData\Local\rundllll.exe"
4⤵
- Executes dropped EXE
PID:264

C:\Users\Admin\AppData\Local\rundllll.exe
"C:\Users\Admin\AppData\Local\rundllll.exe"
4⤵
- Executes dropped EXE
PID:4788

C:\Users\Admin\AppData\Local\rundllll.exe
"C:\Users\Admin\AppData\Local\rundllll.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3240

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\rundllll.exe

Filesize
360KB

MD5
78d48e58a0c4343ad4d512d0eef0d495

SHA1
68de3435d8b660f85632761acf20df34b92f25d8

SHA256
c6839f5f4c0b1b3000d45b67fc0b2a0d22f732a1aeb61d2245470560ee6e1847

SHA512
33c1230a74fee1e60db18cc6759622e767ff4bd72c4cb920327e53b1f4ff775a995aed6f48abb78d7728921022b2e3ace9f0910357abd390cb0c595465af3ef7

Download Submit
memory/2916-37-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/2916-26-0x0000000006040000-0x00000000060DC000-memory.dmp

Filesize
624KB

Download
memory/2916-25-0x0000000005AF0000-0x0000000005AFC000-memory.dmp

Filesize
48KB

Download
memory/2916-24-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/2916-23-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/2916-22-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/3240-36-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3240-33-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3240-31-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3240-29-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4408-6-0x0000000005D50000-0x0000000005F12000-memory.dmp

Filesize
1.8MB

Download
memory/4408-8-0x00000000064D0000-0x0000000006A74000-memory.dmp

Filesize
5.6MB

Download
memory/4408-16-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-18-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-11-0x0000000005260000-0x0000000005266000-memory.dmp

Filesize
24KB

Download
memory/4408-10-0x0000000005C60000-0x0000000005CF2000-memory.dmp

Filesize
584KB

Download
memory/4408-9-0x00000000050E0000-0x00000000050EC000-memory.dmp

Filesize
48KB

Download
memory/4408-12-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/4408-7-0x0000000005230000-0x0000000005252000-memory.dmp

Filesize
136KB

Download
memory/4408-0-0x000000007453E000-0x000000007453F000-memory.dmp

Filesize
4KB

Download
memory/4408-5-0x00000000050D0000-0x00000000050DA000-memory.dmp

Filesize
40KB

Download
memory/4408-4-0x0000000005B10000-0x0000000005B76000-memory.dmp

Filesize
408KB

Download
memory/4408-3-0x0000000074530000-0x0000000074CE0000-memory.dmp

Filesize
7.7MB

Download
memory/4408-2-0x0000000002A50000-0x0000000002A7A000-memory.dmp

Filesize
168KB

Download
memory/4408-1-0x0000000000750000-0x00000000007B0000-memory.dmp

Filesize
384KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads