remcos | 7c06540b8502809c7d07571abcd15251ee642b5e47c6f3eb35b773376769931b

Analysis

max time kernel
148s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 01:16

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General

Target
88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe
Size 560KB
Sample240601-bmzldace5v
SHA256 7c06540b8502809c7d07571abcd15251ee642b5e47c6f3eb35b773376769931b
MD5 88f354986c04a340682ff6d1e1cfe1c6
SHA1 829ebd6e8d8e78bf4e6a5eb36b4bc52acab7d534
SHA512 dc1e2c8440afd05df9e84859e3f345b7f2b3cac9410cac07ad5941c619b4f02f917f641209d44253c027e3418f5bbec6d483c92d12aed0a31a0fe67b81d54f83
SSDEEP 6144:DbDZElXRwSc1mxmMWYC4YkifKKC/ZDzuP4xr32x5vtIArH1uOPdxVClktJKdm:DZuMamMWtARDqP4xAvIquEXWm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos persistence rat

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
4300	RemD.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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hgfgihdgjyf = "\"C:\\Users\\Admin\\AppData\\Roaming\\RemD\\RemD.exe\""	RemD.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4300 set thread context of 4900	4300	RemD.exe	108

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3652	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe
4300	RemD.exe
4300	RemD.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 3816	3652	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe	102
PID 3652 wrote to memory of 3816	3652	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe	102
PID 3652 wrote to memory of 3816	3652	88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe	102
PID 3816 wrote to memory of 2880	3816	WScript.exe	105
PID 3816 wrote to memory of 2880	3816	WScript.exe	105
PID 3816 wrote to memory of 2880	3816	WScript.exe	105
PID 2880 wrote to memory of 4300	2880	cmd.exe	107
PID 2880 wrote to memory of 4300	2880	cmd.exe	107
PID 2880 wrote to memory of 4300	2880	cmd.exe	107
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108
PID 4300 wrote to memory of 4900	4300	RemD.exe	108

C:\Users\Admin\AppData\Local\Temp\88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\88f354986c04a340682ff6d1e1cfe1c6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:3816
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\RemD\RemD.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2880
  - - C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4300
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        
        PID:4900

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4020,i,7012731823941922179,12386606396608877869,262144 --variations-seed-version --mojo-platform-channel-handle=4248 /prefetch:8
1⤵
PID:4432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

install.vbs

Path C:\Users\Admin\AppData\Local\Temp\install.vbs
Size 410B
SHA256 95d975c5b36f23f9121390f8f4a1373b1cbb8045765e1c9fa68e114e2f592d60
MD5 991cad69a8a5ac8e22281a335b88e2b3
SHA1 58568a006ade6e2ca7fa25673b036bcefa303a7d
SHA512 298dc73384bf23e913f9a92e83040d84171ef86630652f82f73367fec9e6c61eb8a6055afe03d997870e529e4e88c0f9571b6da8ca934311afdbb67aca3132ba
MD5 SHA1 SHA512

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RemD.exe

Path C:\Users\Admin\AppData\Roaming\RemD\RemD.exe
Size 560KB
SHA256 7c06540b8502809c7d07571abcd15251ee642b5e47c6f3eb35b773376769931b
MD5 88f354986c04a340682ff6d1e1cfe1c6
SHA1 829ebd6e8d8e78bf4e6a5eb36b4bc52acab7d534
SHA512 dc1e2c8440afd05df9e84859e3f345b7f2b3cac9410cac07ad5941c619b4f02f917f641209d44253c027e3418f5bbec6d483c92d12aed0a31a0fe67b81d54f83
SSDEEP 6144:DbDZElXRwSc1mxmMWYC4YkifKKC/ZDzuP4xr32x5vtIArH1uOPdxVClktJKdm:DZuMamMWtARDqP4xAvIquEXWm
MD5 SHA1 SHA512 SSDEEP

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logs.dat

Path C:\Users\Admin\AppData\Roaming\Remc\logs.dat
Size 79B
SHA256 602580299203273d4a0ddba6d1ea5f76488e11b032e61f0105b998097a979ca8
MD5 4970f5c7e6a8bd6e59e1e53c6cc16b9e
SHA1 80c742f45a8d185216b49359d13dce5a37ffd25e
SHA512 174aa335351ee25fd1e73b74538b6f4a2f0b0cd4d555552f8c893150eac81fdfa619090b42f03d6fb615144035103a2891549602a5acd005a657c564444b4877
MD5 SHA1 SHA512

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memory/3652-2-0x0000000077DF1000-0x0000000077F11000-memory.dmp

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memory/3652-7-0x0000000000400000-0x000000000048C000-memory.dmp

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memory/3652-6-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/3652-10-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4300-18-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4300-21-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/4900-23-0x0000000000400000-0x000000000041E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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