remcos | 1224fa13afd1f551b4400cf7c6e35da7d686824e3e9191ee8714d620660c5fbb

General

Target

e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe
Size

244KB
MD5

e8f3b6078e6629f2f9e0ccff6074df39
SHA1

77f477758e2f646f66664be70e99da9dff71a02a
SHA256

1224fa13afd1f551b4400cf7c6e35da7d686824e3e9191ee8714d620660c5fbb
SHA512

5d7a65fe447d3297fecafbac8f815295d2de7fefe2b9053a3f22464b351c5e4bc2abb76a13ed1e2760f7b4354fa49813b800a99a478c859bec7cfb77fe4d9f77
SSDEEP

6144:4BQ+48EIY22Fy+154GSlz9kBCFJETm7KBTdYEvf5q/jveLu:4BN48E/54xlz9kAmBfYEA/bgu

Score

10^/10

remcos discovery rat

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2784	Scg.exe

Loads dropped DLL 2 IoCs

pid	Process
2656	cmd.exe
2656	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2784 set thread context of 2536	2784	Scg.exe	34

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 4 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	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Scg.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe
2784	Scg.exe
2784	Scg.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe
2784	Scg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2632 wrote to memory of 2776	2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe	30
PID 2632 wrote to memory of 2776	2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe	30
PID 2632 wrote to memory of 2776	2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe	30
PID 2632 wrote to memory of 2776	2632	e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe	30
PID 2776 wrote to memory of 2656	2776	WScript.exe	31
PID 2776 wrote to memory of 2656	2776	WScript.exe	31
PID 2776 wrote to memory of 2656	2776	WScript.exe	31
PID 2776 wrote to memory of 2656	2776	WScript.exe	31
PID 2656 wrote to memory of 2784	2656	cmd.exe	33
PID 2656 wrote to memory of 2784	2656	cmd.exe	33
PID 2656 wrote to memory of 2784	2656	cmd.exe	33
PID 2656 wrote to memory of 2784	2656	cmd.exe	33
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34
PID 2784 wrote to memory of 2536	2784	Scg.exe	34

C:\Users\Admin\AppData\Local\Temp\e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e8f3b6078e6629f2f9e0ccff6074df39_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2632
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RSSCom\Scg.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2656
  - - C:\Users\Admin\AppData\Roaming\RSSCom\Scg.exe
      C:\Users\Admin\AppData\Roaming\RSSCom\Scg.exe
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:2784
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
412B

MD5
86c39fbe1dc4d30557695bb2ca71401b

SHA1
436ebc86cd6208bf06d5b4c3a436b2929363a8b4

SHA256
b6042a1f0d1222ebdd74836fc7d665af97e9c7b6e938a1a5f3a6e88ca1597809

SHA512
a25f2bad6ec4ba1e297f82ec3a80e74c0c7c62ae3c0fce45e58f751b14d23bb80ac79ea9e82ba3f5f3161f2006f29a0f4a911d23cb69f65fe0eb938031740fe0

Download Submit
C:\Users\Admin\AppData\Roaming\Rsst\logs.dat

Filesize
79B

MD5
0568c903de514d3b007b2628bc11b545

SHA1
516dca0e427ff650f792cda3541e2890c2104003

SHA256
369a86970cb70cd83c8786c9d0106246bd9d1c857a68581ad997853601b9c0bb

SHA512
0526ca79433d9cc9a240222b81cefe10aca6a0f29e6947464aefd9e6cb55b2adf0cfdd044b5803f5be45b9128e8f075812bdc3f00d051b9cff84402c3ef864d9

Download Submit
\Users\Admin\AppData\Roaming\RSSCom\Scg.exe

Filesize
244KB

MD5
e8f3b6078e6629f2f9e0ccff6074df39

SHA1
77f477758e2f646f66664be70e99da9dff71a02a

SHA256
1224fa13afd1f551b4400cf7c6e35da7d686824e3e9191ee8714d620660c5fbb

SHA512
5d7a65fe447d3297fecafbac8f815295d2de7fefe2b9053a3f22464b351c5e4bc2abb76a13ed1e2760f7b4354fa49813b800a99a478c859bec7cfb77fe4d9f77

Download Submit
memory/2536-36-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2536-24-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-26-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-28-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-30-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-32-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-34-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2536-37-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2632-10-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2632-11-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2632-2-0x00000000771C0000-0x0000000077296000-memory.dmp

Filesize
856KB

Download
memory/2632-7-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2632-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2632-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2784-22-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2784-19-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

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