remcos | f1b64a13beab16831d0641505dd12656113b1de377cec810e4a71fe093ec3729

General

Target

d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe
Size

555KB
MD5

d6437a3445fd51ed14f1e3c692494c42
SHA1

782e55533edbe5a411fb6860da5f88fac6c6c319
SHA256

f1b64a13beab16831d0641505dd12656113b1de377cec810e4a71fe093ec3729
SHA512

c0ed3afeba8134924f6593737f64c394f030228ef1077411a33dd0cdc96ddfb33cda34f7a07d6739d041089d002deeb50ad62c1396916150f55152244693a22d
SSDEEP

12288:frUq+OcKM/3igrk3IT1KZg4yNJQe50gp:frt+HKM/3P8fHIR5R

Score

10^/10

remcos remotehost discovery rat upx

Malware Config

Extracted

Family

remcos

Version

3.0.2 Pro

Botnet

RemoteHost

C2

176.111.174.14:2804

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-77IWIS
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

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2100-14-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-15-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-19-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-17-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-16-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-10-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-13-0x0000000000400000-0x0000000000481000-memory.dmp	upx
behavioral1/memory/2100-9-0x0000000000400000-0x0000000000481000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2672 set thread context of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31

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	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31
PID 2672 wrote to memory of 2100	2672	d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Users\Admin\AppData\Local\Temp\d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d6437a3445fd51ed14f1e3c692494c42_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Loading Replay Monitor...

Downloads

memory/2100-17-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-16-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-15-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-19-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-14-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-9-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-13-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2100-8-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2100-10-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2672-5-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-18-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-0-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download
memory/2672-2-0x00000000002E0000-0x00000000002EA000-memory.dmp

Filesize
40KB

Download
memory/2672-3-0x0000000074C20000-0x000000007530E000-memory.dmp

Filesize
6.9MB

Download
memory/2672-6-0x00000000051F0000-0x000000000525C000-memory.dmp

Filesize
432KB

Download
memory/2672-1-0x0000000001370000-0x0000000001402000-memory.dmp

Filesize
584KB

Download
memory/2672-4-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing