remcos | eaad66e48e3e3bf7c291baf791b910c7aab878b006cf37f653b152ec3118c0de

General

Target

c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe
Size

588KB
MD5

c928a854cfbfdedf03340fa5bc09b29e
SHA1

b94f4521bd81481c7973c38c43f743d88b05d22d
SHA256

eaad66e48e3e3bf7c291baf791b910c7aab878b006cf37f653b152ec3118c0de
SHA512

3f31bd871c4fa8dfa06e4940d4ba7519289ed894c48ae8cf242ab01c72026d0fa7b4c314dd3281dfdc8a6847c94bd3ae36b8ce3a0132efc1f52ca2866a556f82
SSDEEP

6144:rOeTjZiol0YwthHibT3dVgCiR13/HlH+M7UgEtf0/BqpGgC:rOeXZDe7E3dVgCGZ9+M7UgEV0/BqcgC

Score

10^/10

remcos discovery persistence rat

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2720	Remc.exe

Loads dropped DLL 2 IoCs

pid	Process
2212	cmd.exe
2212	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\erwfguyhjnxcj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remc\\Remc.exe\""	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\erwfguyhjnxcj = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remc\\Remc.exe\""	Remc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2704	2720	Remc.exe	32

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	c928a854cfbfdedf03340fa5bc09b29e_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	Remc.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe
2720	Remc.exe
2720	Remc.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe
2720	Remc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 2468	2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe	28
PID 2472 wrote to memory of 2468	2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe	28
PID 2472 wrote to memory of 2468	2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe	28
PID 2472 wrote to memory of 2468	2472	c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe	28
PID 2468 wrote to memory of 2212	2468	WScript.exe	29
PID 2468 wrote to memory of 2212	2468	WScript.exe	29
PID 2468 wrote to memory of 2212	2468	WScript.exe	29
PID 2468 wrote to memory of 2212	2468	WScript.exe	29
PID 2212 wrote to memory of 2720	2212	cmd.exe	31
PID 2212 wrote to memory of 2720	2212	cmd.exe	31
PID 2212 wrote to memory of 2720	2212	cmd.exe	31
PID 2212 wrote to memory of 2720	2212	cmd.exe	31
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32
PID 2720 wrote to memory of 2704	2720	Remc.exe	32

C:\Users\Admin\AppData\Local\Temp\c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c928a854cfbfdedf03340fa5bc09b29e_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2472
- 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:2468
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remc\Remc.exe"
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2212
  - - C:\Users\Admin\AppData\Roaming\Remc\Remc.exe
      C:\Users\Admin\AppData\Roaming\Remc\Remc.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:2720
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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
410B

MD5
837b54af2c8d285fb69d719cc9061206

SHA1
b31b75216a46b744eb0d89dd9885431a8ecde820

SHA256
353bf067c7071e2b6904205a0f6755433a8711a4b2a9b48ac32ff538463f0e46

SHA512
6cc4e846538cf16de26004343a157a565fe9730ad5c253e3fb6c64098405849e732bd2216fbdecd52cc3cbcb84e24e4dca23b5fd4f68bcdc0e73d485479e2311

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

Filesize
79B

MD5
b5b7bc1cf92f52581ec930cde0a6d838

SHA1
0a8b2b0bd238debcf4850ceddcc161f508c1c943

SHA256
7260d03f17b2ce5eace8364ab9e5141ed143605380a5d7ba18087c64bacaf800

SHA512
84e0b932a1603b70cfd2405bb1dc27ed273e8f88f08d9264f697d07ed424fae3bfd1999cab37b623718d49b716150c1a7bad919bf896783126b85e0df575dfd8

Download Submit
\Users\Admin\AppData\Roaming\Remc\Remc.exe

Filesize
588KB

MD5
c928a854cfbfdedf03340fa5bc09b29e

SHA1
b94f4521bd81481c7973c38c43f743d88b05d22d

SHA256
eaad66e48e3e3bf7c291baf791b910c7aab878b006cf37f653b152ec3118c0de

SHA512
3f31bd871c4fa8dfa06e4940d4ba7519289ed894c48ae8cf242ab01c72026d0fa7b4c314dd3281dfdc8a6847c94bd3ae36b8ce3a0132efc1f52ca2866a556f82

Download Submit
memory/2472-2-0x0000000077110000-0x00000000771E6000-memory.dmp

Filesize
856KB

Download
memory/2472-3-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2472-4-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2472-7-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2472-12-0x0000000072940000-0x0000000072A60000-memory.dmp

Filesize
1.1MB

Download
memory/2472-11-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-35-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-25-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-38-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-33-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-31-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-27-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2704-37-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-29-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2720-20-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2720-23-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads