remcos | 850e7fa559e58fcb57b7cd78f297ce077f1ecf6dd25d62ffccdbb00dbce86bfd

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 23:49

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General

Target

JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe
Size

662KB
MD5

b36937c3fefcd1df032ac2900df91e9e
SHA1

bb494c6af0b07691596b0d08b2826a88d790349c
SHA256

850e7fa559e58fcb57b7cd78f297ce077f1ecf6dd25d62ffccdbb00dbce86bfd
SHA512

f0ec223982ca1a358c23d3d1d065bb93246bac2ceb3c4eb037e2a4b104ec6e6d7d1c5420895ee9e81e29b8920e620200b610458fe8c732d0ecec06328ea0b32c
SSDEEP

12288:ptnlaPwq8HRQoWR87YSdEEYunKDLnWFcyCcPMweE9:PAKHyoWR87YSGWKXccDcPf9

Score

10^/10

remcos discovery rat

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1196 set thread context of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30

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 3 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	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1196 wrote to memory of 1720	1196	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	30
PID 1720 wrote to memory of 2184	1720	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	31
PID 1720 wrote to memory of 2184	1720	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	31
PID 1720 wrote to memory of 2184	1720	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	31
PID 1720 wrote to memory of 2184	1720	JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b36937c3fefcd1df032ac2900df91e9e.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 396
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsdA516.tmp\awjx.dll

Filesize
20KB

MD5
213e480b87636c56a73a61de53f0c3c8

SHA1
0425ea30b6ae2eca54a8e55e1b7950dc0f5c1412

SHA256
f8c73afa54aeed213fe0f60b0f3fd7e95ad292941a1dcd7cb9d94dc3b0571637

SHA512
7b326838f0a8a214a932f58c66a37b0d6c7972e0ec089f7528c34041b8891c4a4b71d99d7630ff5c4bcbca83cd2aa25b4e8da30bdb1755339aa7ee5d079a4d34

Download Submit
memory/1196-8-0x0000000074245000-0x0000000074247000-memory.dmp

Filesize
8KB

Download
memory/1720-9-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/1720-11-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/1720-12-0x0000000000400000-0x0000000000488000-memory.dmp

Filesize
544KB

Download
memory/2184-13-0x0000000000610000-0x0000000000611000-memory.dmp

Filesize
4KB

Download