remcos | 1d88df31bc788eddf044ef1c51b08f69e20cd4345bf3fa231916c6df9ddc8297

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
17-09-2024 12:37

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General

Target

e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Size

994KB
MD5

e6d5da214f6b2eabbf79e165a1fa04a1
SHA1

0ae4949b4623640bfce375f7947be3a0f1d02531
SHA256

1d88df31bc788eddf044ef1c51b08f69e20cd4345bf3fa231916c6df9ddc8297
SHA512

2e36eb2df2524227c3b9a77cbbe8237b41d973d1ece05a92f829c14b2b6e0f2d57c7b02ca4c82919e7f44936e61dd62acf90328f9d0c20f2ac781a332fb8f022
SSDEEP

24576:Hu6J33O0c+JY5UZ+XC0kGso6FalGou0KWY:Bu0c++OCvkGs9FalvuoY

Score

10^/10

remcos discovery rat upx

Malware Config

Signatures

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

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/728-1-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/728-7-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/728-9-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/728-8-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4912 set thread context of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83

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	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\winmgmts:\root\cimv2	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83
PID 4912 wrote to memory of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83
PID 4912 wrote to memory of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83
PID 4912 wrote to memory of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83
PID 4912 wrote to memory of 728	4912	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	83

C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe"
1⤵
- Checks BIOS information in registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/728-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/728-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/728-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/728-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4912-0-0x0000000000CC0000-0x0000000000CC1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads