remcos | 1d88df31bc788eddf044ef1c51b08f69e20cd4345bf3fa231916c6df9ddc8297

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
behavioral1/memory/2668-2-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2668-10-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2668-11-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral1/memory/2668-12-0x0000000000400000-0x0000000000426000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	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 18 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2684	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	31
PID 2396 wrote to memory of 2684	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	31
PID 2396 wrote to memory of 2684	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	31
PID 2396 wrote to memory of 2684	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	31
PID 2396 wrote to memory of 2364	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	32
PID 2396 wrote to memory of 2364	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	32
PID 2396 wrote to memory of 2364	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	32
PID 2396 wrote to memory of 2364	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	32
PID 2396 wrote to memory of 2900	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	33
PID 2396 wrote to memory of 2900	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	33
PID 2396 wrote to memory of 2900	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	33
PID 2396 wrote to memory of 2900	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	33
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34
PID 2396 wrote to memory of 2668	2396	e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe	34

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:2396
- C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe"
  2⤵
  PID:2684
- C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe"
  2⤵
  PID:2364
- C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e6d5da214f6b2eabbf79e165a1fa04a1_JaffaCakes118.exe"
  2⤵
  PID:2900
- 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:2668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

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

memory/2396-0-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/2668-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2668-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2668-6-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2668-11-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2668-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads